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os_unix.c

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1 /* -

2 ** 2004 May 22 -

3 ** -

4 ** The author disclaims copyright to this source code. In place of -

5 ** a legal notice, here is a blessing: -

6 ** -

7 ** May you do good and not evil. -

8 ** May you find forgiveness for yourself and forgive others. -

9 ** May you share freely, never taking more than you give. -

10 ** -

11 ****************************************************************************** -

12 ** -

13 ** This file contains the VFS implementation for unix-like operating systems -

14 ** include Linux, MacOSX, *BSD, QNX, VxWorks, AIX, HPUX, and others. -

15 ** -

16 ** There are actually several different VFS implementations in this file. -

17 ** The differences are in the way that file locking is done. The default -

18 ** implementation uses Posix Advisory Locks. Alternative implementations -

19 ** use flock(), dot-files, various proprietary locking schemas, or simply -

20 ** skip locking all together. -

21 ** -

22 ** This source file is organized into divisions where the logic for various -

23 ** subfunctions is contained within the appropriate division. PLEASE -

24 ** KEEP THE STRUCTURE OF THIS FILE INTACT. New code should be placed -

25 ** in the correct division and should be clearly labeled. -

26 ** -

27 ** The layout of divisions is as follows: -

28 ** -

29 ** * General-purpose declarations and utility functions. -

30 ** * Unique file ID logic used by VxWorks. -

31 ** * Various locking primitive implementations (all except proxy locking): -

32 ** + for Posix Advisory Locks -

33 ** + for no-op locks -

34 ** + for dot-file locks -

35 ** + for flock() locking -

36 ** + for named semaphore locks (VxWorks only) -

37 ** + for AFP filesystem locks (MacOSX only) -

38 ** * sqlite3_file methods not associated with locking. -

39 ** * Definitions of sqlite3_io_methods objects for all locking -

40 ** methods plus "finder" functions for each locking method. -

41 ** * sqlite3_vfs method implementations. -

42 ** * Locking primitives for the proxy uber-locking-method. (MacOSX only) -

43 ** * Definitions of sqlite3_vfs objects for all locking methods -

44 ** plus implementations of sqlite3_os_init() and sqlite3_os_end(). -

45 */ -

46 #include "sqliteInt.h" -

47 #if SQLITE_OS_UNIX /* This file is used on unix only */ -

48 -

49 /* -

50 ** There are various methods for file locking used for concurrency -

51 ** control: -

52 ** -

53 ** 1. POSIX locking (the default), -

54 ** 2. No locking, -

55 ** 3. Dot-file locking, -

56 ** 4. flock() locking, -

57 ** 5. AFP locking (OSX only), -

58 ** 6. Named POSIX semaphores (VXWorks only), -

59 ** 7. proxy locking. (OSX only) -

60 ** -

61 ** Styles 4, 5, and 7 are only available of SQLITE_ENABLE_LOCKING_STYLE -

62 ** is defined to 1. The SQLITE_ENABLE_LOCKING_STYLE also enables automatic -

63 ** selection of the appropriate locking style based on the filesystem -

64 ** where the database is located. -

65 */ -

66 #if !defined(SQLITE_ENABLE_LOCKING_STYLE) -

67 # if defined(__APPLE__) -

68 # define SQLITE_ENABLE_LOCKING_STYLE 1 -

69 # else -

70 # define SQLITE_ENABLE_LOCKING_STYLE 0 -

71 # endif -

72 #endif -

73 -

74 /* Use pread() and pwrite() if they are available */ -

75 #if defined(__APPLE__) -

76 # define HAVE_PREAD 1 -

77 # define HAVE_PWRITE 1 -

78 #endif -

79 #if defined(HAVE_PREAD64) && defined(HAVE_PWRITE64) -

80 # undef USE_PREAD -

81 # define USE_PREAD64 1 -

82 #elif defined(HAVE_PREAD) && defined(HAVE_PWRITE) -

83 # undef USE_PREAD64 -

84 # define USE_PREAD 1 -

85 #endif -

86 -

87 /* -

88 ** standard include files. -

89 */ -

90 #include <sys/types.h> -

91 #include <sys/stat.h> -

92 #include <fcntl.h> -

93 #include <sys/ioctl.h> -

94 #include <unistd.h> -

95 #include <time.h> -

96 #include <sys/time.h> -

97 #include <errno.h> -

98 #if !defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0 -

99 # include <sys/mman.h> -

100 #endif -

101 -

102 #if SQLITE_ENABLE_LOCKING_STYLE -

103 # include <sys/ioctl.h> -

104 # include <sys/file.h> -

105 # include <sys/param.h> -

106 #endif /* SQLITE_ENABLE_LOCKING_STYLE */ -

107 -

108 #if defined(__APPLE__) && ((__MAC_OS_X_VERSION_MIN_REQUIRED > 1050) || \ -

109 (__IPHONE_OS_VERSION_MIN_REQUIRED > 2000)) -

110 # if (!defined(TARGET_OS_EMBEDDED) || (TARGET_OS_EMBEDDED==0)) \ -

111 && (!defined(TARGET_IPHONE_SIMULATOR) || (TARGET_IPHONE_SIMULATOR==0)) -

112 # define HAVE_GETHOSTUUID 1 -

113 # else -

114 # warning "gethostuuid() is disabled." -

115 # endif -

116 #endif -

117 -

118 -

119 #if OS_VXWORKS -

120 # include <sys/ioctl.h> -

121 # include <semaphore.h> -

122 # include <limits.h> -

123 #endif /* OS_VXWORKS */ -

124 -

125 #if defined(__APPLE__) || SQLITE_ENABLE_LOCKING_STYLE -

126 # include <sys/mount.h> -

127 #endif -

128 -

129 #ifdef HAVE_UTIME -

130 # include <utime.h> -

131 #endif -

132 -

133 /* -

134 ** Allowed values of unixFile.fsFlags -

135 */ -

136 #define SQLITE_FSFLAGS_IS_MSDOS 0x1 -

137 -

138 /* -

139 ** If we are to be thread-safe, include the pthreads header and define -

140 ** the SQLITE_UNIX_THREADS macro. -

141 */ -

142 #if SQLITE_THREADSAFE -

143 # include <pthread.h> -

144 # define SQLITE_UNIX_THREADS 1 -

145 #endif -

146 -

147 /* -

148 ** Default permissions when creating a new file -

149 */ -

150 #ifndef SQLITE_DEFAULT_FILE_PERMISSIONS -

151 # define SQLITE_DEFAULT_FILE_PERMISSIONS 0644 -

152 #endif -

153 -

154 /* -

155 ** Default permissions when creating auto proxy dir -

156 */ -

157 #ifndef SQLITE_DEFAULT_PROXYDIR_PERMISSIONS -

158 # define SQLITE_DEFAULT_PROXYDIR_PERMISSIONS 0755 -

159 #endif -

160 -

161 /* -

162 ** Maximum supported path-length. -

163 */ -

164 #define MAX_PATHNAME 512 -

165 -

166 /* -

167 ** Maximum supported symbolic links -

168 */ -

169 #define SQLITE_MAX_SYMLINKS 100 -

170 -

171 /* Always cast the getpid() return type for compatibility with -

172 ** kernel modules in VxWorks. */ -

173 #define osGetpid(X) (pid_t)getpid() -

174 -

175 /* -

176 ** Only set the lastErrno if the error code is a real error and not -

177 ** a normal expected return code of SQLITE_BUSY or SQLITE_OK -

178 */ -

179 #define IS_LOCK_ERROR(x) ((x != SQLITE_OK) && (x != SQLITE_BUSY)) -

180 -

181 /* Forward references */ -

182 typedef struct unixShm unixShm; /* Connection shared memory */ -

183 typedef struct unixShmNode unixShmNode; /* Shared memory instance */ -

184 typedef struct unixInodeInfo unixInodeInfo; /* An i-node */ -

185 typedef struct UnixUnusedFd UnixUnusedFd; /* An unused file descriptor */ -

186 -

187 /* -

188 ** Sometimes, after a file handle is closed by SQLite, the file descriptor -

189 ** cannot be closed immediately. In these cases, instances of the following -

190 ** structure are used to store the file descriptor while waiting for an -

191 ** opportunity to either close or reuse it. -

192 */ -

193 struct UnixUnusedFd { -

194 int fd; /* File descriptor to close */ -

195 int flags; /* Flags this file descriptor was opened with */ -

196 UnixUnusedFd *pNext; /* Next unused file descriptor on same file */ -

197 }; -

198 -

199 /* -

200 ** The unixFile structure is subclass of sqlite3_file specific to the unix -

201 ** VFS implementations. -

202 */ -

203 typedef struct unixFile unixFile; -

204 struct unixFile { -

205 sqlite3_io_methods const *pMethod; /* Always the first entry */ -

206 sqlite3_vfs *pVfs; /* The VFS that created this unixFile */ -

207 unixInodeInfo *pInode; /* Info about locks on this inode */ -

208 int h; /* The file descriptor */ -

209 unsigned char eFileLock; /* The type of lock held on this fd */ -

210 unsigned short int ctrlFlags; /* Behavioral bits. UNIXFILE_* flags */ -

211 int lastErrno; /* The unix errno from last I/O error */ -

212 void *lockingContext; /* Locking style specific state */ -

213 UnixUnusedFd *pPreallocatedUnused; /* Pre-allocated UnixUnusedFd */ -

214 const char *zPath; /* Name of the file */ -

215 unixShm *pShm; /* Shared memory segment information */ -

216 int szChunk; /* Configured by FCNTL_CHUNK_SIZE */ -

217 #if SQLITE_MAX_MMAP_SIZE>0 -

218 int nFetchOut; /* Number of outstanding xFetch refs */ -

219 sqlite3_int64 mmapSize; /* Usable size of mapping at pMapRegion */ -

220 sqlite3_int64 mmapSizeActual; /* Actual size of mapping at pMapRegion */ -

221 sqlite3_int64 mmapSizeMax; /* Configured FCNTL_MMAP_SIZE value */ -

222 void *pMapRegion; /* Memory mapped region */ -

223 #endif -

224 int sectorSize; /* Device sector size */ -

225 int deviceCharacteristics; /* Precomputed device characteristics */ -

226 #if SQLITE_ENABLE_LOCKING_STYLE -

227 int openFlags; /* The flags specified at open() */ -

228 #endif -

229 #if SQLITE_ENABLE_LOCKING_STYLE || defined(__APPLE__) -

230 unsigned fsFlags; /* cached details from statfs() */ -

231 #endif -

232 #ifdef SQLITE_ENABLE_SETLK_TIMEOUT -

233 unsigned iBusyTimeout; /* Wait this many millisec on locks */ -

234 #endif -

235 #if OS_VXWORKS -

236 struct vxworksFileId *pId; /* Unique file ID */ -

237 #endif -

238 #ifdef SQLITE_DEBUG -

239 /* The next group of variables are used to track whether or not the -

240 ** transaction counter in bytes 24-27 of database files are updated -

241 ** whenever any part of the database changes. An assertion fault will -

242 ** occur if a file is updated without also updating the transaction -

243 ** counter. This test is made to avoid new problems similar to the -

244 ** one described by ticket #3584. -

245 */ -

246 unsigned char transCntrChng; /* True if the transaction counter changed */ -

247 unsigned char dbUpdate; /* True if any part of database file changed */ -

248 unsigned char inNormalWrite; /* True if in a normal write operation */ -

249 -

250 #endif -

251 -

252 #ifdef SQLITE_TEST -

253 /* In test mode, increase the size of this structure a bit so that -

254 ** it is larger than the struct CrashFile defined in test6.c. -

255 */ -

256 char aPadding[32]; -

257 #endif -

258 }; -

259 -

260 /* This variable holds the process id (pid) from when the xRandomness() -

261 ** method was called. If xOpen() is called from a different process id, -

262 ** indicating that a fork() has occurred, the PRNG will be reset. -

263 */ -

264 static pid_t randomnessPid = 0; -

265 -

266 /* -

267 ** Allowed values for the unixFile.ctrlFlags bitmask: -

268 */ -

269 #define UNIXFILE_EXCL 0x01 /* Connections from one process only */ -

270 #define UNIXFILE_RDONLY 0x02 /* Connection is read only */ -

271 #define UNIXFILE_PERSIST_WAL 0x04 /* Persistent WAL mode */ -

272 #ifndef SQLITE_DISABLE_DIRSYNC -

273 # define UNIXFILE_DIRSYNC 0x08 /* Directory sync needed */ -

274 #else -

275 # define UNIXFILE_DIRSYNC 0x00 -

276 #endif -

277 #define UNIXFILE_PSOW 0x10 /* SQLITE_IOCAP_POWERSAFE_OVERWRITE */ -

278 #define UNIXFILE_DELETE 0x20 /* Delete on close */ -

279 #define UNIXFILE_URI 0x40 /* Filename might have query parameters */ -

280 #define UNIXFILE_NOLOCK 0x80 /* Do no file locking */ -

281 -

282 /* -

283 ** Include code that is common to all os_*.c files -

284 */ -

285 #include "os_common.h" -

286 -

287 /* -

288 ** Define various macros that are missing from some systems. -

289 */ -

290 #ifndef O_LARGEFILE -

291 # define O_LARGEFILE 0 -

292 #endif -

293 #ifdef SQLITE_DISABLE_LFS -

294 # undef O_LARGEFILE -

295 # define O_LARGEFILE 0 -

296 #endif -

297 #ifndef O_NOFOLLOW -

298 # define O_NOFOLLOW 0 -

299 #endif -

300 #ifndef O_BINARY -

301 # define O_BINARY 0 -

302 #endif -

303 -

304 /* -

305 ** The threadid macro resolves to the thread-id or to 0. Used for -

306 ** testing and debugging only. -

307 */ -

308 #if SQLITE_THREADSAFE -

309 #define threadid pthread_self() -

310 #else -

311 #define threadid 0 -

312 #endif -

313 -

314 /* -

315 ** HAVE_MREMAP defaults to true on Linux and false everywhere else. -

316 */ -

317 #if !defined(HAVE_MREMAP) -

318 # if defined(__linux__) && defined(_GNU_SOURCE) -

319 # define HAVE_MREMAP 1 -

320 # else -

321 # define HAVE_MREMAP 0 -

322 # endif -

323 #endif -

324 -

325 /* -

326 ** Explicitly call the 64-bit version of lseek() on Android. Otherwise, lseek() -

327 ** is the 32-bit version, even if _FILE_OFFSET_BITS=64 is defined. -

328 */ -

329 #ifdef __ANDROID__ -

330 # define lseek lseek64 -

331 #endif -

332 -

333 #ifdef __linux__ -

334 /* -

335 ** Linux-specific IOCTL magic numbers used for controlling F2FS -

336 */ -

337 #define F2FS_IOCTL_MAGIC 0xf5 -

338 #define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1) -

339 #define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2) -

340 #define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3) -

341 #define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5) -

342 #define F2FS_IOC_GET_FEATURES _IOR(F2FS_IOCTL_MAGIC, 12, u32) -

343 #define F2FS_FEATURE_ATOMIC_WRITE 0x0004 -

344 #endif /* __linux__ */ -

345 -

346 -

347 /* -

348 ** Different Unix systems declare open() in different ways. Same use -

349 ** open(const char*,int,mode_t). Others use open(const char*,int,...). -

350 ** The difference is important when using a pointer to the function. -

351 ** -

352 ** The safest way to deal with the problem is to always use this wrapper -

353 ** which always has the same well-defined interface. -

354 */ -

355 static int posixOpen(const char *zFile, int flags, int mode){ -

356

return open(zFile, flags, mode);

executed 107540 times by 438 tests: return open(zFile, flags, mode);

Executed by:

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357 } -

358 -

359 /* Forward reference */ -

360 static int openDirectory(const char*, int*); -

361 static int unixGetpagesize(void); -

362 -

363 /* -

364 ** Many system calls are accessed through pointer-to-functions so that -

365 ** they may be overridden at runtime to facilitate fault injection during -

366 ** testing and sandboxing. The following array holds the names and pointers -

367 ** to all overrideable system calls. -

368 */ -

369 static struct unix_syscall { -

370 const char *zName; /* Name of the system call */ -

371 sqlite3_syscall_ptr pCurrent; /* Current value of the system call */ -

372 sqlite3_syscall_ptr pDefault; /* Default value */ -

373 } aSyscall[] = { -

374 { "open", (sqlite3_syscall_ptr)posixOpen, 0 }, -

375 #define osOpen ((int(*)(const char*,int,int))aSyscall[0].pCurrent) -

376 -

377 { "close", (sqlite3_syscall_ptr)close, 0 }, -

378 #define osClose ((int(*)(int))aSyscall[1].pCurrent) -

379 -

380 { "access", (sqlite3_syscall_ptr)access, 0 }, -

381 #define osAccess ((int(*)(const char*,int))aSyscall[2].pCurrent) -

382 -

383 { "getcwd", (sqlite3_syscall_ptr)getcwd, 0 }, -

384 #define osGetcwd ((char*(*)(char*,size_t))aSyscall[3].pCurrent) -

385 -

386 { "stat", (sqlite3_syscall_ptr)stat, 0 }, -

387 #define osStat ((int(*)(const char*,struct stat*))aSyscall[4].pCurrent) -

388 -

389 /* -

390 ** The DJGPP compiler environment looks mostly like Unix, but it -

391 ** lacks the fcntl() system call. So redefine fcntl() to be something -

392 ** that always succeeds. This means that locking does not occur under -

393 ** DJGPP. But it is DOS - what did you expect? -

394 */ -

395 #ifdef __DJGPP__ -

396 { "fstat", 0, 0 }, -

397 #define osFstat(a,b,c) 0 -

398 #else -

399 { "fstat", (sqlite3_syscall_ptr)fstat, 0 }, -

400 #define osFstat ((int(*)(int,struct stat*))aSyscall[5].pCurrent) -

401 #endif -

402 -

403 { "ftruncate", (sqlite3_syscall_ptr)ftruncate, 0 }, -

404 #define osFtruncate ((int(*)(int,off_t))aSyscall[6].pCurrent) -

405 -

406 { "fcntl", (sqlite3_syscall_ptr)fcntl, 0 }, -

407 #define osFcntl ((int(*)(int,int,...))aSyscall[7].pCurrent) -

408 -

409 { "read", (sqlite3_syscall_ptr)read, 0 }, -

410 #define osRead ((ssize_t(*)(int,void*,size_t))aSyscall[8].pCurrent) -

411 -

412 #if defined(USE_PREAD) || SQLITE_ENABLE_LOCKING_STYLE -

413 { "pread", (sqlite3_syscall_ptr)pread, 0 }, -

414 #else -

415 { "pread", (sqlite3_syscall_ptr)0, 0 }, -

416 #endif -

417 #define osPread ((ssize_t(*)(int,void*,size_t,off_t))aSyscall[9].pCurrent) -

418 -

419 #if defined(USE_PREAD64) -

420 { "pread64", (sqlite3_syscall_ptr)pread64, 0 }, -

421 #else -

422 { "pread64", (sqlite3_syscall_ptr)0, 0 }, -

423 #endif -

424 #define osPread64 ((ssize_t(*)(int,void*,size_t,off64_t))aSyscall[10].pCurrent) -

425 -

426 { "write", (sqlite3_syscall_ptr)write, 0 }, -

427 #define osWrite ((ssize_t(*)(int,const void*,size_t))aSyscall[11].pCurrent) -

428 -

429 #if defined(USE_PREAD) || SQLITE_ENABLE_LOCKING_STYLE -

430 { "pwrite", (sqlite3_syscall_ptr)pwrite, 0 }, -

431 #else -

432 { "pwrite", (sqlite3_syscall_ptr)0, 0 }, -

433 #endif -

434 #define osPwrite ((ssize_t(*)(int,const void*,size_t,off_t))\ -

435 aSyscall[12].pCurrent) -

436 -

437 #if defined(USE_PREAD64) -

438 { "pwrite64", (sqlite3_syscall_ptr)pwrite64, 0 }, -

439 #else -

440 { "pwrite64", (sqlite3_syscall_ptr)0, 0 }, -

441 #endif -

442 #define osPwrite64 ((ssize_t(*)(int,const void*,size_t,off64_t))\ -

443 aSyscall[13].pCurrent) -

444 -

445 { "fchmod", (sqlite3_syscall_ptr)fchmod, 0 }, -

446 #define osFchmod ((int(*)(int,mode_t))aSyscall[14].pCurrent) -

447 -

448 #if defined(HAVE_POSIX_FALLOCATE) && HAVE_POSIX_FALLOCATE -

449 { "fallocate", (sqlite3_syscall_ptr)posix_fallocate, 0 }, -

450 #else -

451 { "fallocate", (sqlite3_syscall_ptr)0, 0 }, -

452 #endif -

453 #define osFallocate ((int(*)(int,off_t,off_t))aSyscall[15].pCurrent) -

454 -

455 { "unlink", (sqlite3_syscall_ptr)unlink, 0 }, -

456 #define osUnlink ((int(*)(const char*))aSyscall[16].pCurrent) -

457 -

458 { "openDirectory", (sqlite3_syscall_ptr)openDirectory, 0 }, -

459 #define osOpenDirectory ((int(*)(const char*,int*))aSyscall[17].pCurrent) -

460 -

461 { "mkdir", (sqlite3_syscall_ptr)mkdir, 0 }, -

462 #define osMkdir ((int(*)(const char*,mode_t))aSyscall[18].pCurrent) -

463 -

464 { "rmdir", (sqlite3_syscall_ptr)rmdir, 0 }, -

465 #define osRmdir ((int(*)(const char*))aSyscall[19].pCurrent) -

466 -

467 #if defined(HAVE_FCHOWN) -

468 { "fchown", (sqlite3_syscall_ptr)fchown, 0 }, -

469 #else -

470 { "fchown", (sqlite3_syscall_ptr)0, 0 }, -

471 #endif -

472 #define osFchown ((int(*)(int,uid_t,gid_t))aSyscall[20].pCurrent) -

473 -

474 #if defined(HAVE_FCHOWN) -

475 { "geteuid", (sqlite3_syscall_ptr)geteuid, 0 }, -

476 #else -

477 { "geteuid", (sqlite3_syscall_ptr)0, 0 }, -

478 #endif -

479 #define osGeteuid ((uid_t(*)(void))aSyscall[21].pCurrent) -

480 -

481 #if !defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0 -

482 { "mmap", (sqlite3_syscall_ptr)mmap, 0 }, -

483 #else -

484 { "mmap", (sqlite3_syscall_ptr)0, 0 }, -

485 #endif -

486 #define osMmap ((void*(*)(void*,size_t,int,int,int,off_t))aSyscall[22].pCurrent) -

487 -

488 #if !defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0 -

489 { "munmap", (sqlite3_syscall_ptr)munmap, 0 }, -

490 #else -

491 { "munmap", (sqlite3_syscall_ptr)0, 0 }, -

492 #endif -

493 #define osMunmap ((int(*)(void*,size_t))aSyscall[23].pCurrent) -

494 -

495 #if HAVE_MREMAP && (!defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0) -

496 { "mremap", (sqlite3_syscall_ptr)mremap, 0 }, -

497 #else -

498 { "mremap", (sqlite3_syscall_ptr)0, 0 }, -

499 #endif -

500 #define osMremap ((void*(*)(void*,size_t,size_t,int,...))aSyscall[24].pCurrent) -

501 -

502 #if !defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0 -

503 { "getpagesize", (sqlite3_syscall_ptr)unixGetpagesize, 0 }, -

504 #else -

505 { "getpagesize", (sqlite3_syscall_ptr)0, 0 }, -

506 #endif -

507 #define osGetpagesize ((int(*)(void))aSyscall[25].pCurrent) -

508 -

509 #if defined(HAVE_READLINK) -

510 { "readlink", (sqlite3_syscall_ptr)readlink, 0 }, -

511 #else -

512 { "readlink", (sqlite3_syscall_ptr)0, 0 }, -

513 #endif -

514 #define osReadlink ((ssize_t(*)(const char*,char*,size_t))aSyscall[26].pCurrent) -

515 -

516 #if defined(HAVE_LSTAT) -

517 { "lstat", (sqlite3_syscall_ptr)lstat, 0 }, -

518 #else -

519 { "lstat", (sqlite3_syscall_ptr)0, 0 }, -

520 #endif -

521 #define osLstat ((int(*)(const char*,struct stat*))aSyscall[27].pCurrent) -

522 -

523 #if defined(__linux__) && defined(SQLITE_ENABLE_BATCH_ATOMIC_WRITE) -

524 # ifdef __ANDROID__ -

525 { "ioctl", (sqlite3_syscall_ptr)(int(*)(int, int, ...))ioctl, 0 }, -

526 # else -

527 { "ioctl", (sqlite3_syscall_ptr)ioctl, 0 }, -

528 # endif -

529 #else -

530 { "ioctl", (sqlite3_syscall_ptr)0, 0 }, -

531 #endif -

532 #define osIoctl ((int(*)(int,int,...))aSyscall[28].pCurrent) -

533 -

534 }; /* End of the overrideable system calls */ -

535 -

536 -

537 /* -

538 ** On some systems, calls to fchown() will trigger a message in a security -

539 ** log if they come from non-root processes. So avoid calling fchown() if -

540 ** we are not running as root. -

541 */ -

542 static int robustFchown(int fd, uid_t uid, gid_t gid){ -

543 #if defined(HAVE_FCHOWN) -

544

return osGeteuid() ? 0 : osFchown(fd,uid,gid);

executed 45462 times by 425 tests: return ((uid_t(*)(void))aSyscall[21].pCurrent)() ? 0 : ((int(*)(int,uid_t,gid_t))aSyscall[20].pCurrent)(fd,uid,gid);

Executed by:

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...

((uid_t(*)(voi...1].pCurrent)()

Description

TRUE

evaluated 45462 times by 425 tests

Evaluated by:

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Self test (10)
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Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

FALSE

never evaluated

0-45462

545 #else -

546 return 0; -

547 #endif -

548 } -

549 -

550 /* -

551 ** This is the xSetSystemCall() method of sqlite3_vfs for all of the -

552 ** "unix" VFSes. Return SQLITE_OK opon successfully updating the -

553 ** system call pointer, or SQLITE_NOTFOUND if there is no configurable -

554 ** system call named zName. -

555 */ -

556 static int unixSetSystemCall( -

557 sqlite3_vfs *pNotUsed, /* The VFS pointer. Not used */ -

558 const char *zName, /* Name of system call to override */ -

559 sqlite3_syscall_ptr pNewFunc /* Pointer to new system call value */ -

560 ){ -

561 unsigned int i; -

562 int rc = SQLITE_NOTFOUND; -

563 -

564 UNUSED_PARAMETER(pNotUsed); -

565

if( zName==0 ){

zName==0	Description
TRUE	evaluated 6 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 17 times by 1 test Evaluated by: Self test (438)

6-17

566 /* If no zName is given, restore all system calls to their default -

567 ** settings and return NULL -

568 */ -

569 rc = SQLITE_OK; -

570

for(i=0; i<sizeof(aSyscall)/sizeof(aSyscall[0]); i++){

i<sizeof(aSysc...f(aSyscall[0])	Description
TRUE	evaluated 174 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 6 times by 1 test Evaluated by: Self test (438)

6-174

571

if( aSyscall[i].pDefault ){

aSyscall[i].pDefault	Description
TRUE	evaluated 27 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 147 times by 1 test Evaluated by: Self test (438)

27-147

572 aSyscall[i].pCurrent = aSyscall[i].pDefault; -

573

}

executed 27 times by 1 test: end of block

Executed by:

Self test (438)

574

}

executed 174 times by 1 test: end of block

Executed by:

Self test (438)

174

575

}else{

executed 6 times by 1 test: end of block

Executed by:

Self test (438)

576 /* If zName is specified, operate on only the one system call -

577 ** specified. -

578 */ -

579

for(i=0; i<sizeof(aSyscall)/sizeof(aSyscall[0]); i++){

i<sizeof(aSysc...f(aSyscall[0])	Description
TRUE	evaluated 262 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 2 times by 1 test Evaluated by: Self test (438)

2-262

580

if( strcmp(zName, aSyscall[i].zName)==0 ){

never executed: __result = (((const unsigned char *) (const char *) ( zName ))[3] - __s2[3]);

never executed: end of block

never executed: __result = (((const unsigned char *) (const char *) ( aSyscall[i].zName ))[3] - __s2[3]);

never executed: end of block

__extension__ ...e )))); }) ==0	Description
TRUE	evaluated 15 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 247 times by 1 test Evaluated by: Self test (438)

__s1_len > 0	Description
TRUE	never evaluated
FALSE	never evaluated

__result == 0	Description
TRUE	never evaluated
FALSE	never evaluated

__s1_len > 1	Description
TRUE	never evaluated
FALSE	never evaluated

__result == 0	Description
TRUE	never evaluated
FALSE	never evaluated

__s1_len > 2	Description
TRUE	never evaluated
FALSE	never evaluated

__result == 0	Description
TRUE	never evaluated
FALSE	never evaluated

__s2_len > 0	Description
TRUE	never evaluated
FALSE	never evaluated

__result == 0	Description
TRUE	never evaluated
FALSE	never evaluated

__s2_len > 1	Description
TRUE	never evaluated
FALSE	never evaluated

__result == 0	Description
TRUE	never evaluated
FALSE	never evaluated

__s2_len > 2	Description
TRUE	never evaluated
FALSE	never evaluated

__result == 0	Description
TRUE	never evaluated
FALSE	never evaluated

0-247

581

if( aSyscall[i].pDefault==0 ){

aSyscall[i].pDefault==0	Description
TRUE	evaluated 7 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 8 times by 1 test Evaluated by: Self test (438)

7-8

582 aSyscall[i].pDefault = aSyscall[i].pCurrent; -

583

}

executed 7 times by 1 test: end of block

Executed by:

Self test (438)

584 rc = SQLITE_OK; -

585

if( pNewFunc==0 ) pNewFunc = aSyscall[i].pDefault;

executed 5 times by 1 test: pNewFunc = aSyscall[i].pDefault;

Executed by:

Self test (438)

pNewFunc==0	Description
TRUE	evaluated 5 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 10 times by 1 test Evaluated by: Self test (438)

5-10

586 aSyscall[i].pCurrent = pNewFunc; -

587

break;

executed 15 times by 1 test: break;

Executed by:

Self test (438)

588 } -

589

}

executed 247 times by 1 test: end of block

Executed by:

Self test (438)

247

590

}

executed 17 times by 1 test: end of block

Executed by:

Self test (438)

591

return rc;

executed 23 times by 1 test: return rc;

Executed by:

Self test (438)

592 } -

593 -

594 /* -

595 ** Return the value of a system call. Return NULL if zName is not a -

596 ** recognized system call name. NULL is also returned if the system call -

597 ** is currently undefined. -

598 */ -

599 static sqlite3_syscall_ptr unixGetSystemCall( -

600 sqlite3_vfs *pNotUsed, -

601 const char *zName -

602 ){ -

603 unsigned int i; -

604 -

605 UNUSED_PARAMETER(pNotUsed); -

606

for(i=0; i<sizeof(aSyscall)/sizeof(aSyscall[0]); i++){

i<sizeof(aSysc...f(aSyscall[0])	Description
TRUE	evaluated 636 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 3 times by 1 test Evaluated by: Self test (438)

3-636

607

if( strcmp(zName, aSyscall[i].zName)==0 ) return aSyscall[i].pCurrent;

never executed: __result = (((const unsigned char *) (const char *) ( zName ))[3] - __s2[3]);

never executed: end of block

never executed: __result = (((const unsigned char *) (const char *) ( aSyscall[i].zName ))[3] - __s2[3]);

never executed: end of block

executed 39 times by 1 test: return aSyscall[i].pCurrent;

Executed by:

Self test (438)

__extension__ ...e )))); }) ==0	Description
TRUE	evaluated 39 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 597 times by 1 test Evaluated by: Self test (438)

__s1_len > 0	Description
TRUE	never evaluated
FALSE	never evaluated

__result == 0	Description
TRUE	never evaluated
FALSE	never evaluated

__s1_len > 1	Description
TRUE	never evaluated
FALSE	never evaluated

__result == 0	Description
TRUE	never evaluated
FALSE	never evaluated

__s1_len > 2	Description
TRUE	never evaluated
FALSE	never evaluated

__result == 0	Description
TRUE	never evaluated
FALSE	never evaluated

__s2_len > 0	Description
TRUE	never evaluated
FALSE	never evaluated

__result == 0	Description
TRUE	never evaluated
FALSE	never evaluated

__s2_len > 1	Description
TRUE	never evaluated
FALSE	never evaluated

__result == 0	Description
TRUE	never evaluated
FALSE	never evaluated

__s2_len > 2	Description
TRUE	never evaluated
FALSE	never evaluated

__result == 0	Description
TRUE	never evaluated
FALSE	never evaluated

0-597

608

}

executed 597 times by 1 test: end of block

Executed by:

Self test (438)

597

609

return 0;

executed 3 times by 1 test: return 0;

Executed by:

Self test (438)

610 } -

611 -

612 /* -

613 ** Return the name of the first system call after zName. If zName==NULL -

614 ** then return the name of the first system call. Return NULL if zName -

615 ** is the last system call or if zName is not the name of a valid -

616 ** system call. -

617 */ -

618 static const char *unixNextSystemCall(sqlite3_vfs *p, const char *zName){ -

619 int i = -1; -

620 -

621 UNUSED_PARAMETER(p); -

622

if( zName ){

zName	Description
TRUE	evaluated 25 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 1 time by 1 test Evaluated by: Self test (438)

1-25

623

for(i=0; i<ArraySize(aSyscall)-1; i++){

i<((int)(sizeo...yscall[0])))-1	Description
TRUE	evaluated 367 times by 1 test Evaluated by: Self test (438)
FALSE	never evaluated

0-367

624

if( strcmp(zName, aSyscall[i].zName)==0 ) break;

never executed: __result = (((const unsigned char *) (const char *) ( zName ))[3] - __s2[3]);

never executed: end of block

never executed: __result = (((const unsigned char *) (const char *) ( aSyscall[i].zName ))[3] - __s2[3]);

never executed: end of block

executed 25 times by 1 test: break;

Executed by:

Self test (438)

__extension__ ...e )))); }) ==0	Description
TRUE	evaluated 25 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 342 times by 1 test Evaluated by: Self test (438)

__s1_len > 0	Description
TRUE	never evaluated
FALSE	never evaluated

__result == 0	Description
TRUE	never evaluated
FALSE	never evaluated

__s1_len > 1	Description
TRUE	never evaluated
FALSE	never evaluated

__result == 0	Description
TRUE	never evaluated
FALSE	never evaluated

__s1_len > 2	Description
TRUE	never evaluated
FALSE	never evaluated

__result == 0	Description
TRUE	never evaluated
FALSE	never evaluated

__s2_len > 0	Description
TRUE	never evaluated
FALSE	never evaluated

__result == 0	Description
TRUE	never evaluated
FALSE	never evaluated

__s2_len > 1	Description
TRUE	never evaluated
FALSE	never evaluated

__result == 0	Description
TRUE	never evaluated
FALSE	never evaluated

__s2_len > 2	Description
TRUE	never evaluated
FALSE	never evaluated

__result == 0	Description
TRUE	never evaluated
FALSE	never evaluated

0-342

625

}

executed 342 times by 1 test: end of block

Executed by:

Self test (438)

342

626

}

executed 25 times by 1 test: end of block

Executed by:

Self test (438)

627

for(i++; i<ArraySize(aSyscall); i++){

i<((int)(sizeo...aSyscall[0])))	Description
TRUE	evaluated 29 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 1 time by 1 test Evaluated by: Self test (438)

1-29

628

if( aSyscall[i].pCurrent!=0 ) return aSyscall[i].zName;

executed 25 times by 1 test: return aSyscall[i].zName;

Executed by:

Self test (438)

aSyscall[i].pCurrent!=0	Description
TRUE	evaluated 25 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 4 times by 1 test Evaluated by: Self test (438)

4-25

629

}

executed 4 times by 1 test: end of block

Executed by:

Self test (438)

630

return 0;

executed 1 time by 1 test: return 0;

Executed by:

Self test (438)

631 } -

632 -

633 /* -

634 ** Do not accept any file descriptor less than this value, in order to avoid -

635 ** opening database file using file descriptors that are commonly used for -

636 ** standard input, output, and error. -

637 */ -

638 #ifndef SQLITE_MINIMUM_FILE_DESCRIPTOR -

639 # define SQLITE_MINIMUM_FILE_DESCRIPTOR 3 -

640 #endif -

641 -

642 /* -

643 ** Invoke open(). Do so multiple times, until it either succeeds or -

644 ** fails for some reason other than EINTR. -

645 ** -

646 ** If the file creation mode "m" is 0 then set it to the default for -

647 ** SQLite. The default is SQLITE_DEFAULT_FILE_PERMISSIONS (normally -

648 ** 0644) as modified by the system umask. If m is not 0, then -

649 ** make the file creation mode be exactly m ignoring the umask. -

650 ** -

651 ** The m parameter will be non-zero only when creating -wal, -journal, -

652 ** and -shm files. We want those files to have *exactly* the same -

653 ** permissions as their original database, unadulterated by the umask. -

654 ** In that way, if a database file is -rw-rw-rw or -rw-rw-r-, and a -

655 ** transaction crashes and leaves behind hot journals, then any -

656 ** process that is able to write to the database will also be able to -

657 ** recover the hot journals. -

658 */ -

659 static int robust_open(const char *z, int f, mode_t m){ -

660 int fd; -

661

mode_t m2 = m ? m : SQLITE_DEFAULT_FILE_PERMISSIONS;

Description

TRUE

evaluated 45759 times by 425 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

FALSE

evaluated 61779 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

45759-61779

662 while(1){ -

663 #if defined(O_CLOEXEC) -

664 fd = osOpen(z,f|O_CLOEXEC,m2); -

665 #else -

666 fd = osOpen(z,f,m2); -

667 #endif -

668

if( fd<0 ){

fd<0

Description

TRUE

evaluated 558 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 107015 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

558-107015

669

if( errno==EINTR ) continue;

executed 32 times by 1 test: continue;

Executed by:

Self test (438)

(*__errno_location ()) == 4	Description
TRUE	evaluated 32 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 526 times by 1 test Evaluated by: Self test (438)

32-526

670

break;

executed 526 times by 1 test: break;

Executed by:

Self test (438)

526

671 } -

672

if( fd>=SQLITE_MINIMUM_FILE_DESCRIPTOR ) break;

executed 107015 times by 438 tests: break;

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

fd>=3

Description

TRUE

evaluated 107015 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

FALSE

never evaluated

0-107015

673 osClose(fd); -

674 sqlite3_log(SQLITE_WARNING, -

675 "attempt to open \"%s\" as file descriptor %d", z, fd); -

676 fd = -1; -

677

if( osOpen("/dev/null", f, m)<0 ) break;

never executed: break;

((int(*)(const...null", f, m)<0	Description
TRUE	never evaluated
FALSE	never evaluated

678

}

never executed: end of block

679

if( fd>=0 ){

fd>=0

Description

TRUE

evaluated 107015 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

FALSE

evaluated 526 times by 1 test

Evaluated by:

Self test (438)

526-107015

680

if( m!=0 ){

m!=0

Description

TRUE

evaluated 45739 times by 425 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

FALSE

evaluated 61276 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

45739-61276

681 struct stat statbuf; -

682

if( osFstat(fd, &statbuf)==0

((int(*)(int,s..., &statbuf)==0

Description

TRUE

evaluated 45739 times by 425 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

FALSE

never evaluated

0-45739

683

&& statbuf.st_size==0

statbuf.st_size==0

Description

TRUE

evaluated 41332 times by 153 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (104)
Self test (106)
Self test (107)
Self test (11)
Self test (12)
Self test (13)
Self test (14)
Self test (15)
Self test (16)
Self test (17)
Self test (18)
Self test (19)
Self test (2)
Self test (20)
Self test (21)
Self test (22)
Self test (23)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
...

FALSE

evaluated 4407 times by 290 tests

Evaluated by:

Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (108)
Self test (109)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
Self test (124)
Self test (125)
Self test (126)
Self test (127)
Self test (128)
...

4407-41332

684

&& (statbuf.st_mode&0777)!=m

(statbuf.st_mode&0777)!=m

Description

TRUE

evaluated 4 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 41328 times by 153 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (104)
Self test (106)
Self test (107)
Self test (11)
Self test (12)
Self test (13)
Self test (14)
Self test (15)
Self test (16)
Self test (17)
Self test (18)
Self test (19)
Self test (2)
Self test (20)
Self test (21)
Self test (22)
Self test (23)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
...

4-41328

685 ){ -

686 osFchmod(fd, m); -

687

}

executed 4 times by 1 test: end of block

Executed by:

Self test (438)

688

}

executed 45739 times by 425 tests: end of block

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

45739

689 #if defined(FD_CLOEXEC) && (!defined(O_CLOEXEC) || O_CLOEXEC==0) -

690 osFcntl(fd, F_SETFD, osFcntl(fd, F_GETFD, 0) | FD_CLOEXEC); -

691 #endif -

692

}

executed 107015 times by 438 tests: end of block

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

107015

693

return fd;

executed 107541 times by 438 tests: return fd;

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

107541

694 } -

695 -

696 /* -

697 ** Helper functions to obtain and relinquish the global mutex. The -

698 ** global mutex is used to protect the unixInodeInfo and -

699 ** vxworksFileId objects used by this file, all of which may be -

700 ** shared by multiple threads. -

701 ** -

702 ** Function unixMutexHeld() is used to assert() that the global mutex -

703 ** is held when required. This function is only used as part of assert() -

704 ** statements. e.g. -

705 ** -

706 ** unixEnterMutex() -

707 ** assert( unixMutexHeld() ); -

708 ** unixEnterLeave() -

709 ** -

710 ** To prevent deadlock, the global unixBigLock must must be acquired -

711 ** before the unixInodeInfo.pLockMutex mutex, if both are held. It is -

712 ** OK to get the pLockMutex without holding unixBigLock first, but if -

713 ** that happens, the unixBigLock mutex must not be acquired until after -

714 ** pLockMutex is released. -

715 ** -

716 ** OK: enter(unixBigLock), enter(pLockInfo) -

717 ** OK: enter(unixBigLock) -

718 ** OK: enter(pLockInfo) -

719 ** ERROR: enter(pLockInfo), enter(unixBigLock) -

720 */ -

721 static sqlite3_mutex *unixBigLock = 0; -

722 static void unixEnterMutex(void){ -

723 assert( sqlite3_mutex_notheld(unixBigLock) ); /* Not a recursive mutex */ -

724 sqlite3_mutex_enter(unixBigLock); -

725

}

executed 286129 times by 438 tests: end of block

Executed by:

Self test
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Self test (100)
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...

286129

726 static void unixLeaveMutex(void){ -

727 assert( sqlite3_mutex_held(unixBigLock) ); -

728 sqlite3_mutex_leave(unixBigLock); -

729

}

executed 286129 times by 438 tests: end of block

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
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...

286129

730 #ifdef SQLITE_DEBUG -

731 static int unixMutexHeld(void) { -

732 return sqlite3_mutex_held(unixBigLock); -

733 } -

734 #endif -

735 -

736 -

737 #ifdef SQLITE_HAVE_OS_TRACE -

738 /* -

739 ** Helper function for printing out trace information from debugging -

740 ** binaries. This returns the string representation of the supplied -

741 ** integer lock-type. -

742 */ -

743 static const char *azFileLock(int eFileLock){ -

744 switch( eFileLock ){ -

745

case NO_LOCK: return "NONE";

never executed: return "NONE";

never executed: case 0:

746

case SHARED_LOCK: return "SHARED";

never executed: return "SHARED";

never executed: case 1:

747

case RESERVED_LOCK: return "RESERVED";

never executed: return "RESERVED";

never executed: case 2:

748

case PENDING_LOCK: return "PENDING";

never executed: return "PENDING";

never executed: case 3:

749

case EXCLUSIVE_LOCK: return "EXCLUSIVE";

never executed: return "EXCLUSIVE";

never executed: case 4:

750 } -

751

return "ERROR";

never executed: return "ERROR";

752 } -

753 #endif -

754 -

755 #ifdef SQLITE_LOCK_TRACE -

756 /* -

757 ** Print out information about all locking operations. -

758 ** -

759 ** This routine is used for troubleshooting locks on multithreaded -

760 ** platforms. Enable by compiling with the -DSQLITE_LOCK_TRACE -

761 ** command-line option on the compiler. This code is normally -

762 ** turned off. -

763 */ -

764 static int lockTrace(int fd, int op, struct flock *p){ -

765 char *zOpName, *zType; -

766 int s; -

767 int savedErrno; -

768 if( op==F_GETLK ){ -

769 zOpName = "GETLK"; -

770 }else if( op==F_SETLK ){ -

771 zOpName = "SETLK"; -

772 }else{ -

773 s = osFcntl(fd, op, p); -

774 sqlite3DebugPrintf("fcntl unknown %d %d %d\n", fd, op, s); -

775 return s; -

776 } -

777 if( p->l_type==F_RDLCK ){ -

778 zType = "RDLCK"; -

779 }else if( p->l_type==F_WRLCK ){ -

780 zType = "WRLCK"; -

781 }else if( p->l_type==F_UNLCK ){ -

782 zType = "UNLCK"; -

783 }else{ -

784 assert( 0 ); -

785 } -

786 assert( p->l_whence==SEEK_SET ); -

787 s = osFcntl(fd, op, p); -

788 savedErrno = errno; -

789 sqlite3DebugPrintf("fcntl %d %d %s %s %d %d %d %d\n", -

790 threadid, fd, zOpName, zType, (int)p->l_start, (int)p->l_len, -

791 (int)p->l_pid, s); -

792 if( s==(-1) && op==F_SETLK && (p->l_type==F_RDLCK || p->l_type==F_WRLCK) ){ -

793 struct flock l2; -

794 l2 = *p; -

795 osFcntl(fd, F_GETLK, &l2); -

796 if( l2.l_type==F_RDLCK ){ -

797 zType = "RDLCK"; -

798 }else if( l2.l_type==F_WRLCK ){ -

799 zType = "WRLCK"; -

800 }else if( l2.l_type==F_UNLCK ){ -

801 zType = "UNLCK"; -

802 }else{ -

803 assert( 0 ); -

804 } -

805 sqlite3DebugPrintf("fcntl-failure-reason: %s %d %d %d\n", -

806 zType, (int)l2.l_start, (int)l2.l_len, (int)l2.l_pid); -

807 } -

808 errno = savedErrno; -

809 return s; -

810 } -

811 #undef osFcntl -

812 #define osFcntl lockTrace -

813 #endif /* SQLITE_LOCK_TRACE */ -

814 -

815 /* -

816 ** Retry ftruncate() calls that fail due to EINTR -

817 ** -

818 ** All calls to ftruncate() within this file should be made through -

819 ** this wrapper. On the Android platform, bypassing the logic below -

820 ** could lead to a corrupt database. -

821 */ -

822 static int robust_ftruncate(int h, sqlite3_int64 sz){ -

823 int rc; -

824 #ifdef __ANDROID__ -

825 /* On Android, ftruncate() always uses 32-bit offsets, even if -

826 ** _FILE_OFFSET_BITS=64 is defined. This means it is unsafe to attempt to -

827 ** truncate a file to any size larger than 2GiB. Silently ignore any -

828 ** such attempts. */ -

829 if( sz>(sqlite3_int64)0x7FFFFFFF ){ -

830 rc = SQLITE_OK; -

831 }else -

832 #endif -

833

do{ rc = osFtruncate(h,sz); }while( rc<0 && errno==EINTR );

executed 7331 times by 36 tests: end of block

Executed by:

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...

rc<0

Description

TRUE

never evaluated

FALSE

evaluated 7331 times by 36 tests

Evaluated by:

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...

(*__errno_location ()) == 4	Description
TRUE	never evaluated
FALSE	never evaluated

0-7331

834

return rc;

executed 7331 times by 36 tests: return rc;

Executed by:

Self test (10)
Self test (100)
Self test (101)
Self test (104)
Self test (105)
Self test (11)
Self test (14)
Self test (15)
Self test (19)
Self test (20)
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Self test (34)
Self test (438)
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...

7331

835 } -

836 -

837 /* -

838 ** This routine translates a standard POSIX errno code into something -

839 ** useful to the clients of the sqlite3 functions. Specifically, it is -

840 ** intended to translate a variety of "try again" errors into SQLITE_BUSY -

841 ** and a variety of "please close the file descriptor NOW" errors into -

842 ** SQLITE_IOERR -

843 ** -

844 ** Errors during initialization of locks, or file system support for locks, -

845 ** should handle ENOLCK, ENOTSUP, EOPNOTSUPP separately. -

846 */ -

847 static int sqliteErrorFromPosixError(int posixError, int sqliteIOErr) { -

848 assert( (sqliteIOErr == SQLITE_IOERR_LOCK) || -

849 (sqliteIOErr == SQLITE_IOERR_UNLOCK) || -

850 (sqliteIOErr == SQLITE_IOERR_RDLOCK) || -

851 (sqliteIOErr == SQLITE_IOERR_CHECKRESERVEDLOCK) ); -

852 switch (posixError) { -

853

case EACCES:

never executed: case 13 :

854

case EAGAIN:

executed 87 times by 44 tests: case 11 :

Executed by:

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...

855

case ETIMEDOUT:

never executed: case 110 :

856

case EBUSY:

never executed: case 16 :

857

case EINTR:

never executed: case 4 :

858

case ENOLCK:

never executed: case 37 :

859 /* random NFS retry error, unless during file system support -

860 * introspection, in which it actually means what it says */ -

861

return SQLITE_BUSY;

executed 87 times by 44 tests: return 5;

Executed by:

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Self test (67)
...

862 -

863

case EPERM:

never executed: case 1 :

864

return SQLITE_PERM;

never executed: return 3;

865 -

866

default:

executed 3 times by 1 test: default:

Executed by:

Self test (438)

867

return sqliteIOErr;

executed 3 times by 1 test: return sqliteIOErr;

Executed by:

Self test (438)

868 } -

869 } -

870 -

871 -

872 /****************************************************************************** -

873 ****************** Begin Unique File ID Utility Used By VxWorks *************** -

874 ** -

875 ** On most versions of unix, we can get a unique ID for a file by concatenating -

876 ** the device number and the inode number. But this does not work on VxWorks. -

877 ** On VxWorks, a unique file id must be based on the canonical filename. -

878 ** -

879 ** A pointer to an instance of the following structure can be used as a -

880 ** unique file ID in VxWorks. Each instance of this structure contains -

881 ** a copy of the canonical filename. There is also a reference count. -

882 ** The structure is reclaimed when the number of pointers to it drops to -

883 ** zero. -

884 ** -

885 ** There are never very many files open at one time and lookups are not -

886 ** a performance-critical path, so it is sufficient to put these -

887 ** structures on a linked list. -

888 */ -

889 struct vxworksFileId { -

890 struct vxworksFileId *pNext; /* Next in a list of them all */ -

891 int nRef; /* Number of references to this one */ -

892 int nName; /* Length of the zCanonicalName[] string */ -

893 char *zCanonicalName; /* Canonical filename */ -

894 }; -

895 -

896 #if OS_VXWORKS -

897 /* -

898 ** All unique filenames are held on a linked list headed by this -

899 ** variable: -

900 */ -

901 static struct vxworksFileId *vxworksFileList = 0; -

902 -

903 /* -

904 ** Simplify a filename into its canonical form -

905 ** by making the following changes: -

906 ** -

907 ** * removing any trailing and duplicate / -

908 ** * convert /./ into just / -

909 ** * convert /A/../ where A is any simple name into just / -

910 ** -

911 ** Changes are made in-place. Return the new name length. -

912 ** -

913 ** The original filename is in z[0..n-1]. Return the number of -

914 ** characters in the simplified name. -

915 */ -

916 static int vxworksSimplifyName(char *z, int n){ -

917 int i, j; -

918 while( n>1 && z[n-1]=='/' ){ n--; } -

919 for(i=j=0; i<n; i++){ -

920 if( z[i]=='/' ){ -

921 if( z[i+1]=='/' ) continue; -

922 if( z[i+1]=='.' && i+2<n && z[i+2]=='/' ){ -

923 i += 1; -

924 continue; -

925 } -

926 if( z[i+1]=='.' && i+3<n && z[i+2]=='.' && z[i+3]=='/' ){ -

927 while( j>0 && z[j-1]!='/' ){ j--; } -

928 if( j>0 ){ j--; } -

929 i += 2; -

930 continue; -

931 } -

932 } -

933 z[j++] = z[i]; -

934 } -

935 z[j] = 0; -

936 return j; -

937 } -

938 -

939 /* -

940 ** Find a unique file ID for the given absolute pathname. Return -

941 ** a pointer to the vxworksFileId object. This pointer is the unique -

942 ** file ID. -

943 ** -

944 ** The nRef field of the vxworksFileId object is incremented before -

945 ** the object is returned. A new vxworksFileId object is created -

946 ** and added to the global list if necessary. -

947 ** -

948 ** If a memory allocation error occurs, return NULL. -

949 */ -

950 static struct vxworksFileId *vxworksFindFileId(const char *zAbsoluteName){ -

951 struct vxworksFileId *pNew; /* search key and new file ID */ -

952 struct vxworksFileId *pCandidate; /* For looping over existing file IDs */ -

953 int n; /* Length of zAbsoluteName string */ -

954 -

955 assert( zAbsoluteName[0]=='/' ); -

956 n = (int)strlen(zAbsoluteName); -

957 pNew = sqlite3_malloc64( sizeof(*pNew) + (n+1) ); -

958 if( pNew==0 ) return 0; -

959 pNew->zCanonicalName = (char*)&pNew[1]; -

960 memcpy(pNew->zCanonicalName, zAbsoluteName, n+1); -

961 n = vxworksSimplifyName(pNew->zCanonicalName, n); -

962 -

963 /* Search for an existing entry that matching the canonical name. -

964 ** If found, increment the reference count and return a pointer to -

965 ** the existing file ID. -

966 */ -

967 unixEnterMutex(); -

968 for(pCandidate=vxworksFileList; pCandidate; pCandidate=pCandidate->pNext){ -

969 if( pCandidate->nName==n -

970 && memcmp(pCandidate->zCanonicalName, pNew->zCanonicalName, n)==0 -

971 ){ -

972 sqlite3_free(pNew); -

973 pCandidate->nRef++; -

974 unixLeaveMutex(); -

975 return pCandidate; -

976 } -

977 } -

978 -

979 /* No match was found. We will make a new file ID */ -

980 pNew->nRef = 1; -

981 pNew->nName = n; -

982 pNew->pNext = vxworksFileList; -

983 vxworksFileList = pNew; -

984 unixLeaveMutex(); -

985 return pNew; -

986 } -

987 -

988 /* -

989 ** Decrement the reference count on a vxworksFileId object. Free -

990 ** the object when the reference count reaches zero. -

991 */ -

992 static void vxworksReleaseFileId(struct vxworksFileId *pId){ -

993 unixEnterMutex(); -

994 assert( pId->nRef>0 ); -

995 pId->nRef--; -

996 if( pId->nRef==0 ){ -

997 struct vxworksFileId **pp; -

998 for(pp=&vxworksFileList; *pp && *pp!=pId; pp = &((*pp)->pNext)){} -

999 assert( *pp==pId ); -

1000 *pp = pId->pNext; -

1001 sqlite3_free(pId); -

1002 } -

1003 unixLeaveMutex(); -

1004 } -

1005 #endif /* OS_VXWORKS */ -

1006 /*************** End of Unique File ID Utility Used By VxWorks **************** -

1007 ******************************************************************************/ -

1008 -

1009 -

1010 /****************************************************************************** -

1011 *************************** Posix Advisory Locking **************************** -

1012 ** -

1013 ** POSIX advisory locks are broken by design. ANSI STD 1003.1 (1996) -

1014 ** section 6.5.2.2 lines 483 through 490 specify that when a process -

1015 ** sets or clears a lock, that operation overrides any prior locks set -

1016 ** by the same process. It does not explicitly say so, but this implies -

1017 ** that it overrides locks set by the same process using a different -

1018 ** file descriptor. Consider this test case: -

1019 ** -

1020 ** int fd1 = open("./file1", O_RDWR|O_CREAT, 0644); -

1021 ** int fd2 = open("./file2", O_RDWR|O_CREAT, 0644); -

1022 ** -

1023 ** Suppose ./file1 and ./file2 are really the same file (because -

1024 ** one is a hard or symbolic link to the other) then if you set -

1025 ** an exclusive lock on fd1, then try to get an exclusive lock -

1026 ** on fd2, it works. I would have expected the second lock to -

1027 ** fail since there was already a lock on the file due to fd1. -

1028 ** But not so. Since both locks came from the same process, the -

1029 ** second overrides the first, even though they were on different -

1030 ** file descriptors opened on different file names. -

1031 ** -

1032 ** This means that we cannot use POSIX locks to synchronize file access -

1033 ** among competing threads of the same process. POSIX locks will work fine -

1034 ** to synchronize access for threads in separate processes, but not -

1035 ** threads within the same process. -

1036 ** -

1037 ** To work around the problem, SQLite has to manage file locks internally -

1038 ** on its own. Whenever a new database is opened, we have to find the -

1039 ** specific inode of the database file (the inode is determined by the -

1040 ** st_dev and st_ino fields of the stat structure that fstat() fills in) -

1041 ** and check for locks already existing on that inode. When locks are -

1042 ** created or removed, we have to look at our own internal record of the -

1043 ** locks to see if another thread has previously set a lock on that same -

1044 ** inode. -

1045 ** -

1046 ** (Aside: The use of inode numbers as unique IDs does not work on VxWorks. -

1047 ** For VxWorks, we have to use the alternative unique ID system based on -

1048 ** canonical filename and implemented in the previous division.) -

1049 ** -

1050 ** The sqlite3_file structure for POSIX is no longer just an integer file -

1051 ** descriptor. It is now a structure that holds the integer file -

1052 ** descriptor and a pointer to a structure that describes the internal -

1053 ** locks on the corresponding inode. There is one locking structure -

1054 ** per inode, so if the same inode is opened twice, both unixFile structures -

1055 ** point to the same locking structure. The locking structure keeps -

1056 ** a reference count (so we will know when to delete it) and a "cnt" -

1057 ** field that tells us its internal lock status. cnt==0 means the -

1058 ** file is unlocked. cnt==-1 means the file has an exclusive lock. -

1059 ** cnt>0 means there are cnt shared locks on the file. -

1060 ** -

1061 ** Any attempt to lock or unlock a file first checks the locking -

1062 ** structure. The fcntl() system call is only invoked to set a -

1063 ** POSIX lock if the internal lock structure transitions between -

1064 ** a locked and an unlocked state. -

1065 ** -

1066 ** But wait: there are yet more problems with POSIX advisory locks. -

1067 ** -

1068 ** If you close a file descriptor that points to a file that has locks, -

1069 ** all locks on that file that are owned by the current process are -

1070 ** released. To work around this problem, each unixInodeInfo object -

1071 ** maintains a count of the number of pending locks on tha inode. -

1072 ** When an attempt is made to close an unixFile, if there are -

1073 ** other unixFile open on the same inode that are holding locks, the call -

1074 ** to close() the file descriptor is deferred until all of the locks clear. -

1075 ** The unixInodeInfo structure keeps a list of file descriptors that need to -

1076 ** be closed and that list is walked (and cleared) when the last lock -

1077 ** clears. -

1078 ** -

1079 ** Yet another problem: LinuxThreads do not play well with posix locks. -

1080 ** -

1081 ** Many older versions of linux use the LinuxThreads library which is -

1082 ** not posix compliant. Under LinuxThreads, a lock created by thread -

1083 ** A cannot be modified or overridden by a different thread B. -

1084 ** Only thread A can modify the lock. Locking behavior is correct -

1085 ** if the appliation uses the newer Native Posix Thread Library (NPTL) -

1086 ** on linux - with NPTL a lock created by thread A can override locks -

1087 ** in thread B. But there is no way to know at compile-time which -

1088 ** threading library is being used. So there is no way to know at -

1089 ** compile-time whether or not thread A can override locks on thread B. -

1090 ** One has to do a run-time check to discover the behavior of the -

1091 ** current process. -

1092 ** -

1093 ** SQLite used to support LinuxThreads. But support for LinuxThreads -

1094 ** was dropped beginning with version 3.7.0. SQLite will still work with -

1095 ** LinuxThreads provided that (1) there is no more than one connection -

1096 ** per database file in the same process and (2) database connections -

1097 ** do not move across threads. -

1098 */ -

1099 -

1100 /* -

1101 ** An instance of the following structure serves as the key used -

1102 ** to locate a particular unixInodeInfo object. -

1103 */ -

1104 struct unixFileId { -

1105 dev_t dev; /* Device number */ -

1106 #if OS_VXWORKS -

1107 struct vxworksFileId *pId; /* Unique file ID for vxworks. */ -

1108 #else -

1109 /* We are told that some versions of Android contain a bug that -

1110 ** sizes ino_t at only 32-bits instead of 64-bits. (See -

1111 ** https://android-review.googlesource.com/#/c/115351/3/dist/sqlite3.c) -

1112 ** To work around this, always allocate 64-bits for the inode number. -

1113 ** On small machines that only have 32-bit inodes, this wastes 4 bytes, -

1114 ** but that should not be a big deal. */ -

1115 /* WAS: ino_t ino; */ -

1116 u64 ino; /* Inode number */ -

1117 #endif -

1118 }; -

1119 -

1120 /* -

1121 ** An instance of the following structure is allocated for each open -

1122 ** inode. Or, on LinuxThreads, there is one of these structures for -

1123 ** each inode opened by each thread. -

1124 ** -

1125 ** A single inode can have multiple file descriptors, so each unixFile -

1126 ** structure contains a pointer to an instance of this object and this -

1127 ** object keeps a count of the number of unixFile pointing to it. -

1128 ** -

1129 ** Mutex rules: -

1130 ** -

1131 ** (1) Only the pLockMutex mutex must be held in order to read or write -

1132 ** any of the locking fields: -

1133 ** nShared, nLock, eFileLock, bProcessLock, pUnused -

1134 ** -

1135 ** (2) When nRef>0, then the following fields are unchanging and can -

1136 ** be read (but not written) without holding any mutex: -

1137 ** fileId, pLockMutex -

1138 ** -

1139 ** (3) With the exceptions above, all the fields may only be read -

1140 ** or written while holding the global unixBigLock mutex. -

1141 ** -

1142 ** Deadlock prevention: The global unixBigLock mutex may not -

1143 ** be acquired while holding the pLockMutex mutex. If both unixBigLock -

1144 ** and pLockMutex are needed, then unixBigLock must be acquired first. -

1145 */ -

1146 struct unixInodeInfo { -

1147 struct unixFileId fileId; /* The lookup key */ -

1148 sqlite3_mutex *pLockMutex; /* Hold this mutex for... */ -

1149 int nShared; /* Number of SHARED locks held */ -

1150 int nLock; /* Number of outstanding file locks */ -

1151 unsigned char eFileLock; /* One of SHARED_LOCK, RESERVED_LOCK etc. */ -

1152 unsigned char bProcessLock; /* An exclusive process lock is held */ -

1153 UnixUnusedFd *pUnused; /* Unused file descriptors to close */ -

1154 int nRef; /* Number of pointers to this structure */ -

1155 unixShmNode *pShmNode; /* Shared memory associated with this inode */ -

1156 unixInodeInfo *pNext; /* List of all unixInodeInfo objects */ -

1157 unixInodeInfo *pPrev; /* .... doubly linked */ -

1158 #if SQLITE_ENABLE_LOCKING_STYLE -

1159 unsigned long long sharedByte; /* for AFP simulated shared lock */ -

1160 #endif -

1161 #if OS_VXWORKS -

1162 sem_t *pSem; /* Named POSIX semaphore */ -

1163 char aSemName[MAX_PATHNAME+2]; /* Name of that semaphore */ -

1164 #endif -

1165 }; -

1166 -

1167 /* -

1168 ** A lists of all unixInodeInfo objects. -

1169 */ -

1170 static unixInodeInfo *inodeList = 0; /* All unixInodeInfo objects */ -

1171 -

1172 #ifdef SQLITE_DEBUG -

1173 /* -

1174 ** True if the inode mutex is held, or not. Used only within assert() -

1175 ** to help verify correct mutex usage. -

1176 */ -

1177 int unixFileMutexHeld(unixFile *pFile){ -

1178 assert( pFile->pInode ); -

1179 return sqlite3_mutex_held(pFile->pInode->pLockMutex); -

1180 } -

1181 int unixFileMutexNotheld(unixFile *pFile){ -

1182 assert( pFile->pInode ); -

1183 return sqlite3_mutex_notheld(pFile->pInode->pLockMutex); -

1184 } -

1185 #endif -

1186 -

1187 /* -

1188 ** -

1189 ** This function - unixLogErrorAtLine(), is only ever called via the macro -

1190 ** unixLogError(). -

1191 ** -

1192 ** It is invoked after an error occurs in an OS function and errno has been -

1193 ** set. It logs a message using sqlite3_log() containing the current value of -

1194 ** errno and, if possible, the human-readable equivalent from strerror() or -

1195 ** strerror_r(). -

1196 ** -

1197 ** The first argument passed to the macro should be the error code that -

1198 ** will be returned to SQLite (e.g. SQLITE_IOERR_DELETE, SQLITE_CANTOPEN). -

1199 ** The two subsequent arguments should be the name of the OS function that -

1200 ** failed (e.g. "unlink", "open") and the associated file-system path, -

1201 ** if any. -

1202 */ -

1203 #define unixLogError(a,b,c) unixLogErrorAtLine(a,b,c,__LINE__) -

1204 static int unixLogErrorAtLine( -

1205 int errcode, /* SQLite error code */ -

1206 const char *zFunc, /* Name of OS function that failed */ -

1207 const char *zPath, /* File path associated with error */ -

1208 int iLine /* Source line number where error occurred */ -

1209 ){ -

1210 char *zErr; /* Message from strerror() or equivalent */ -

1211 int iErrno = errno; /* Saved syscall error number */ -

1212 -

1213 /* If this is not a threadsafe build (SQLITE_THREADSAFE==0), then use -

1214 ** the strerror() function to obtain the human-readable error message -

1215 ** equivalent to errno. Otherwise, use strerror_r(). -

1216 */ -

1217 #if SQLITE_THREADSAFE && defined(HAVE_STRERROR_R) -

1218 char aErr[80]; -

1219 memset(aErr, 0, sizeof(aErr)); -

1220 zErr = aErr; -

1221 -

1222 /* If STRERROR_R_CHAR_P (set by autoconf scripts) or __USE_GNU is defined, -

1223 ** assume that the system provides the GNU version of strerror_r() that -

1224 ** returns a pointer to a buffer containing the error message. That pointer -

1225 ** may point to aErr[], or it may point to some static storage somewhere. -

1226 ** Otherwise, assume that the system provides the POSIX version of -

1227 ** strerror_r(), which always writes an error message into aErr[]. -

1228 ** -

1229 ** If the code incorrectly assumes that it is the POSIX version that is -

1230 ** available, the error message will often be an empty string. Not a -

1231 ** huge problem. Incorrectly concluding that the GNU version is available -

1232 ** could lead to a segfault though. -

1233 */ -

1234 #if defined(STRERROR_R_CHAR_P) || defined(__USE_GNU) -

1235 zErr = -

1236 # endif -

1237 strerror_r(iErrno, aErr, sizeof(aErr)-1); -

1238 -

1239 #elif SQLITE_THREADSAFE -

1240 /* This is a threadsafe build, but strerror_r() is not available. */ -

1241 zErr = ""; -

1242 #else -

1243 /* Non-threadsafe build, use strerror(). */ -

1244 zErr = strerror(iErrno); -

1245 #endif -

1246 -

1247

if( zPath==0 ) zPath = "";

never executed: zPath = "";

zPath==0	Description
TRUE	never evaluated
FALSE	evaluated 516 times by 1 test Evaluated by: Self test (438)

0-516

1248 sqlite3_log(errcode, -

1249 "os_unix.c:%d: (%d) %s(%s) - %s", -

1250 iLine, iErrno, zFunc, zPath, zErr -

1251 ); -

1252 -

1253

return errcode;

executed 516 times by 1 test: return errcode;

Executed by:

Self test (438)

516

1254 } -

1255 -

1256 /* -

1257 ** Close a file descriptor. -

1258 ** -

1259 ** We assume that close() almost always works, since it is only in a -

1260 ** very sick application or on a very sick platform that it might fail. -

1261 ** If it does fail, simply leak the file descriptor, but do log the -

1262 ** error. -

1263 ** -

1264 ** Note that it is not safe to retry close() after EINTR since the -

1265 ** file descriptor might have already been reused by another thread. -

1266 ** So we don't even try to recover from an EINTR. Just log the error -

1267 ** and move on. -

1268 */ -

1269 static void robust_close(unixFile *pFile, int h, int lineno){ -

1270

if( osClose(h) ){

((int(*)(int))...].pCurrent)(h)

Description

TRUE

never evaluated

FALSE

evaluated 106261 times by 416 tests

Evaluated by:

Self test
Self test (10)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
Self test (124)
...

0-106261

1271 unixLogErrorAtLine(SQLITE_IOERR_CLOSE, "close", -

1272 pFile ? pFile->zPath : 0, lineno); -

1273

}

never executed: end of block

1274

}

executed 106261 times by 416 tests: end of block

Executed by:

Self test
Self test (10)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
Self test (124)
...

106261

1275 -

1276 /* -

1277 ** Set the pFile->lastErrno. Do this in a subroutine as that provides -

1278 ** a convenient place to set a breakpoint. -

1279 */ -

1280 static void storeLastErrno(unixFile *pFile, int error){ -

1281 pFile->lastErrno = error; -

1282

}

executed 140006 times by 438 tests: end of block

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

140006

1283 -

1284 /* -

1285 ** Close all file descriptors accumuated in the unixInodeInfo->pUnused list. -

1286 */ -

1287 static void closePendingFds(unixFile *pFile){ -

1288 unixInodeInfo *pInode = pFile->pInode; -

1289 UnixUnusedFd *p; -

1290 UnixUnusedFd *pNext; -

1291 assert( unixFileMutexHeld(pFile) ); -

1292

for(p=pInode->pUnused; p; p=pNext){

Description

TRUE

evaluated 471 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 151101 times by 427 tests

Evaluated by:

Self test
Self test (10)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

471-151101

1293 pNext = p->pNext; -

1294 robust_close(pFile, p->fd, __LINE__); -

1295 sqlite3_free(p); -

1296

}

executed 471 times by 1 test: end of block

Executed by:

Self test (438)

471

1297 pInode->pUnused = 0; -

1298

}

executed 151101 times by 427 tests: end of block

Executed by:

Self test
Self test (10)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

151101

1299 -

1300 /* -

1301 ** Release a unixInodeInfo structure previously allocated by findInodeInfo(). -

1302 ** -

1303 ** The mutex entered using the unixEnterMutex() function must be held -

1304 ** when this function is called. -

1305 */ -

1306 static void releaseInodeInfo(unixFile *pFile){ -

1307 unixInodeInfo *pInode = pFile->pInode; -

1308 assert( unixMutexHeld() ); -

1309 assert( unixFileMutexNotheld(pFile) ); -

1310

if( ALWAYS(pInode) ){

(pInode)

Description

TRUE

evaluated 31857 times by 66 tests

Evaluated by:

Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (24)
Self test (25)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (30)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (35)
Self test (36)
Self test (37)
Self test (38)
Self test (39)
Self test (40)
Self test (41)
Self test (42)
Self test (43)
...

FALSE

never evaluated

0-31857

1311 pInode->nRef--; -

1312

if( pInode->nRef==0 ){

pInode->nRef==0

Description

TRUE

evaluated 19742 times by 66 tests

Evaluated by:

Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (24)
Self test (25)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (30)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (35)
Self test (36)
Self test (37)
Self test (38)
Self test (39)
Self test (40)
Self test (41)
Self test (42)
Self test (43)
...

FALSE

evaluated 12115 times by 1 test

Evaluated by:

Self test (438)

12115-19742

1313 assert( pInode->pShmNode==0 ); -

1314 sqlite3_mutex_enter(pInode->pLockMutex); -

1315 closePendingFds(pFile); -

1316 sqlite3_mutex_leave(pInode->pLockMutex); -

1317

if( pInode->pPrev ){

pInode->pPrev

Description

TRUE

evaluated 9326 times by 10 tests

Evaluated by:

Self test (27)
Self test (34)
Self test (438)
Self test (77)
Self test (78)
Self test (79)
Self test (80)
Self test (81)
Self test (82)
Self test (83)

FALSE

evaluated 10416 times by 66 tests

Evaluated by:

Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (24)
Self test (25)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (30)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (35)
Self test (36)
Self test (37)
Self test (38)
Self test (39)
Self test (40)
Self test (41)
Self test (42)
Self test (43)
...

9326-10416

1318 assert( pInode->pPrev->pNext==pInode ); -

1319 pInode->pPrev->pNext = pInode->pNext; -

1320

}else{

executed 9326 times by 10 tests: end of block

Executed by:

Self test (27)
Self test (34)
Self test (438)
Self test (77)
Self test (78)
Self test (79)
Self test (80)
Self test (81)
Self test (82)
Self test (83)

9326

1321 assert( inodeList==pInode ); -

1322 inodeList = pInode->pNext; -

1323

}

executed 10416 times by 66 tests: end of block

Executed by:

Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (24)
Self test (25)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (30)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (35)
Self test (36)
Self test (37)
Self test (38)
Self test (39)
Self test (40)
Self test (41)
Self test (42)
Self test (43)
...

10416

1324

if( pInode->pNext ){

pInode->pNext

Description

TRUE

evaluated 9541 times by 2 tests

Evaluated by:

Self test (31)
Self test (438)

FALSE

evaluated 10201 times by 65 tests

Evaluated by:

Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (24)
Self test (25)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (30)
Self test (32)
Self test (33)
Self test (34)
Self test (35)
Self test (36)
Self test (37)
Self test (38)
Self test (39)
Self test (40)
Self test (41)
Self test (42)
Self test (43)
Self test (438)
...

9541-10201

1325 assert( pInode->pNext->pPrev==pInode ); -

1326 pInode->pNext->pPrev = pInode->pPrev; -

1327

}

executed 9541 times by 2 tests: end of block

Executed by:

Self test (31)
Self test (438)

9541

1328 sqlite3_mutex_free(pInode->pLockMutex); -

1329 sqlite3_free(pInode); -

1330

}

executed 19742 times by 66 tests: end of block

Executed by:

Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (24)
Self test (25)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (30)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (35)
Self test (36)
Self test (37)
Self test (38)
Self test (39)
Self test (40)
Self test (41)
Self test (42)
Self test (43)
...

19742

1331

}

executed 31857 times by 66 tests: end of block

Executed by:

Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (24)
Self test (25)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (30)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (35)
Self test (36)
Self test (37)
Self test (38)
Self test (39)
Self test (40)
Self test (41)
Self test (42)
Self test (43)
...

31857

1332

}

executed 31857 times by 66 tests: end of block

Executed by:

Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (24)
Self test (25)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (30)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (35)
Self test (36)
Self test (37)
Self test (38)
Self test (39)
Self test (40)
Self test (41)
Self test (42)
Self test (43)
...

31857

1333 -

1334 /* -

1335 ** Given a file descriptor, locate the unixInodeInfo object that -

1336 ** describes that file descriptor. Create a new one if necessary. The -

1337 ** return value might be uninitialized if an error occurs. -

1338 ** -

1339 ** The mutex entered using the unixEnterMutex() function must be held -

1340 ** when this function is called. -

1341 ** -

1342 ** Return an appropriate error code. -

1343 */ -

1344 static int findInodeInfo( -

1345 unixFile *pFile, /* Unix file with file desc used in the key */ -

1346 unixInodeInfo **ppInode /* Return the unixInodeInfo object here */ -

1347 ){ -

1348 int rc; /* System call return code */ -

1349 int fd; /* The file descriptor for pFile */ -

1350 struct unixFileId fileId; /* Lookup key for the unixInodeInfo */ -

1351 struct stat statbuf; /* Low-level file information */ -

1352 unixInodeInfo *pInode = 0; /* Candidate unixInodeInfo object */ -

1353 -

1354 assert( unixMutexHeld() ); -

1355 -

1356 /* Get low-level information about the file that we can used to -

1357 ** create a unique name for the file. -

1358 */ -

1359 fd = pFile->h; -

1360 rc = osFstat(fd, &statbuf); -

1361

if( rc!=0 ){

rc!=0

Description

TRUE

never evaluated

FALSE

evaluated 32248 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

0-32248

1362 storeLastErrno(pFile, errno); -

1363 #if defined(EOVERFLOW) && defined(SQLITE_DISABLE_LFS) -

1364 if( pFile->lastErrno==EOVERFLOW ) return SQLITE_NOLFS; -

1365 #endif -

1366

return SQLITE_IOERR;

never executed: return 10;

1367 } -

1368 -

1369 #ifdef __APPLE__ -

1370 /* On OS X on an msdos filesystem, the inode number is reported -

1371 ** incorrectly for zero-size files. See ticket #3260. To work -

1372 ** around this problem (we consider it a bug in OS X, not SQLite) -

1373 ** we always increase the file size to 1 by writing a single byte -

1374 ** prior to accessing the inode number. The one byte written is -

1375 ** an ASCII 'S' character which also happens to be the first byte -

1376 ** in the header of every SQLite database. In this way, if there -

1377 ** is a race condition such that another thread has already populated -

1378 ** the first page of the database, no damage is done. -

1379 */ -

1380 if( statbuf.st_size==0 && (pFile->fsFlags & SQLITE_FSFLAGS_IS_MSDOS)!=0 ){ -

1381 do{ rc = osWrite(fd, "S", 1); }while( rc<0 && errno==EINTR ); -

1382 if( rc!=1 ){ -

1383 storeLastErrno(pFile, errno); -

1384 return SQLITE_IOERR; -

1385 } -

1386 rc = osFstat(fd, &statbuf); -

1387 if( rc!=0 ){ -

1388 storeLastErrno(pFile, errno); -

1389 return SQLITE_IOERR; -

1390 } -

1391 } -

1392 #endif -

1393 -

1394 memset(&fileId, 0, sizeof(fileId)); -

1395 fileId.dev = statbuf.st_dev; -

1396 #if OS_VXWORKS -

1397 fileId.pId = pFile->pId; -

1398 #else -

1399 fileId.ino = (u64)statbuf.st_ino; -

1400 #endif -

1401 pInode = inodeList; -

1402

while( pInode && memcmp(&fileId, &pInode->fileId, sizeof(fileId)) ){

pInode

Description

TRUE

evaluated 133079 times by 13 tests

Evaluated by:

Self test (27)
Self test (31)
Self test (34)
Self test (4)
Self test (438)
Self test (5)
Self test (77)
Self test (78)
Self test (79)
Self test (80)
Self test (81)
Self test (82)
Self test (83)

FALSE

evaluated 20133 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

memcmp(&fileId...izeof(fileId))	Description
TRUE	evaluated 120964 times by 13 tests Evaluated by: Self test (27) Self test (31) Self test (34) Self test (4) Self test (438) Self test (5) Self test (77) Self test (78) Self test (79) Self test (80) Self test (81) Self test (82) Self test (83)
FALSE	evaluated 12115 times by 1 test Evaluated by: Self test (438)

12115-133079

1403 pInode = pInode->pNext; -

1404

}

executed 120964 times by 13 tests: end of block

Executed by:

Self test (27)
Self test (31)
Self test (34)
Self test (4)
Self test (438)
Self test (5)
Self test (77)
Self test (78)
Self test (79)
Self test (80)
Self test (81)
Self test (82)
Self test (83)

120964

1405

if( pInode==0 ){

pInode==0

Description

TRUE

evaluated 20133 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

FALSE

evaluated 12115 times by 1 test

Evaluated by:

Self test (438)

12115-20133

1406 pInode = sqlite3_malloc64( sizeof(*pInode) ); -

1407

if( pInode==0 ){

pInode==0

Description

TRUE

evaluated 8 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 20125 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

8-20125

1408

return SQLITE_NOMEM_BKPT;

executed 8 times by 1 test: return 7;

Executed by:

Self test (438)

1409 } -

1410 memset(pInode, 0, sizeof(*pInode)); -

1411 memcpy(&pInode->fileId, &fileId, sizeof(fileId)); -

1412

if( sqlite3GlobalConfig.bCoreMutex ){

sqlite3Config.bCoreMutex

Description

TRUE

evaluated 20116 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

FALSE

evaluated 9 times by 1 test

Evaluated by:

Self test (438)

9-20116

1413 pInode->pLockMutex = sqlite3_mutex_alloc(SQLITE_MUTEX_FAST); -

1414

if( pInode->pLockMutex==0 ){

pInode->pLockMutex==0

Description

TRUE

evaluated 8 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 20108 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

8-20108

1415 sqlite3_free(pInode); -

1416

return SQLITE_NOMEM_BKPT;

executed 8 times by 1 test: return 7;

Executed by:

Self test (438)

1417 } -

1418

}

executed 20108 times by 438 tests: end of block

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
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Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

20108

1419 pInode->nRef = 1; -

1420 pInode->pNext = inodeList; -

1421 pInode->pPrev = 0; -

1422

if( inodeList ) inodeList->pPrev = pInode;

executed 10164 times by 13 tests: inodeList->pPrev = pInode;

Executed by:

Self test (27)
Self test (31)
Self test (34)
Self test (4)
Self test (438)
Self test (5)
Self test (77)
Self test (78)
Self test (79)
Self test (80)
Self test (81)
Self test (82)
Self test (83)

inodeList

Description

TRUE

evaluated 10164 times by 13 tests

Evaluated by:

Self test (27)
Self test (31)
Self test (34)
Self test (4)
Self test (438)
Self test (5)
Self test (77)
Self test (78)
Self test (79)
Self test (80)
Self test (81)
Self test (82)
Self test (83)

FALSE

evaluated 9953 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

9953-10164

1423 inodeList = pInode; -

1424

}else{

executed 20117 times by 438 tests: end of block

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

20117

1425 pInode->nRef++; -

1426

}

executed 12115 times by 1 test: end of block

Executed by:

Self test (438)

12115

1427 *ppInode = pInode; -

1428

return SQLITE_OK;

executed 32232 times by 438 tests: return 0;

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

32232

1429 } -

1430 -

1431 /* -

1432 ** Return TRUE if pFile has been renamed or unlinked since it was first opened. -

1433 */ -

1434 static int fileHasMoved(unixFile *pFile){ -

1435 #if OS_VXWORKS -

1436 return pFile->pInode!=0 && pFile->pId!=pFile->pInode->fileId.pId; -

1437 #else -

1438 struct stat buf; -

1439

return pFile->pInode!=0 &&

executed 119153 times by 438 tests:

return pFile->pInode!=0 && (((int(*)(const char*,struct stat*))aSyscall[4].pCurrent)(pFile->zPath, &buf)!=0 || (u64)buf.st_ino!=pFile->pInode->fileId.ino);

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

pFile->pInode!=0

Description

TRUE

evaluated 119144 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

FALSE

evaluated 9 times by 1 test

Evaluated by:

Self test (438)

9-119153

1440

(osStat(pFile->zPath, &buf)!=0

executed 119153 times by 438 tests:

return pFile->pInode!=0 && (((int(*)(const char*,struct stat*))aSyscall[4].pCurrent)(pFile->zPath, &buf)!=0 || (u64)buf.st_ino!=pFile->pInode->fileId.ino);

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

((int(*)(const...Path, &buf)!=0

Description

TRUE

evaluated 7 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 119137 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

7-119153

1441

|| (u64)buf.st_ino!=pFile->pInode->fileId.ino);

executed 119153 times by 438 tests:

return pFile->pInode!=0 && (((int(*)(const char*,struct stat*))aSyscall[4].pCurrent)(pFile->zPath, &buf)!=0 || (u64)buf.st_ino!=pFile->pInode->fileId.ino);

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

(u64)buf.st_in...de->fileId.ino

Description

TRUE

evaluated 11 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 119126 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

11-119153

1442 #endif -

1443 } -

1444 -

1445 -

1446 /* -

1447 ** Check a unixFile that is a database. Verify the following: -

1448 ** -

1449 ** (1) There is exactly one hard link on the file -

1450 ** (2) The file is not a symbolic link -

1451 ** (3) The file has not been renamed or unlinked -

1452 ** -

1453 ** Issue sqlite3_log(SQLITE_WARNING,...) messages if anything is not right. -

1454 */ -

1455 static void verifyDbFile(unixFile *pFile){ -

1456 struct stat buf; -

1457 int rc; -

1458 -

1459 /* These verifications occurs for the main database only */ -

1460

if( pFile->ctrlFlags & UNIXFILE_NOLOCK ) return;

executed 45003 times by 425 tests: return;

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

pFile->ctrlFlags & 0x80

Description

TRUE

evaluated 45003 times by 425 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

FALSE

evaluated 64093 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

45003-64093

1461 -

1462 rc = osFstat(pFile->h, &buf); -

1463

if( rc!=0 ){

rc!=0

Description

TRUE

never evaluated

FALSE

evaluated 64093 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

0-64093

1464 sqlite3_log(SQLITE_WARNING, "cannot fstat db file %s", pFile->zPath); -

1465

return;

never executed: return;

1466 } -

1467

if( buf.st_nlink==0 ){

buf.st_nlink==0

Description

TRUE

evaluated 11 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 64082 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

11-64082

1468 sqlite3_log(SQLITE_WARNING, "file unlinked while open: %s", pFile->zPath); -

1469

return;

executed 11 times by 1 test: return;

Executed by:

Self test (438)

1470 } -

1471

if( buf.st_nlink>1 ){

buf.st_nlink>1

Description

TRUE

evaluated 2 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 64080 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

2-64080

1472 sqlite3_log(SQLITE_WARNING, "multiple links to file: %s", pFile->zPath); -

1473

return;

executed 2 times by 1 test: return;

Executed by:

Self test (438)

1474 } -

1475

if( fileHasMoved(pFile) ){

fileHasMoved(pFile)

Description

TRUE

evaluated 1 time by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 64079 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

1-64079

1476 sqlite3_log(SQLITE_WARNING, "file renamed while open: %s", pFile->zPath); -

1477

return;

executed 1 time by 1 test: return;

Executed by:

Self test (438)

1478 } -

1479

}

executed 64079 times by 438 tests: end of block

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

64079

1480 -

1481 -

1482 /* -

1483 ** This routine checks if there is a RESERVED lock held on the specified -

1484 ** file by this or any other process. If such a lock is held, set *pResOut -

1485 ** to a non-zero value otherwise *pResOut is set to zero. The return value -

1486 ** is set to SQLITE_OK unless an I/O error occurs during lock checking. -

1487 */ -

1488 static int unixCheckReservedLock(sqlite3_file *id, int *pResOut){ -

1489 int rc = SQLITE_OK; -

1490 int reserved = 0; -

1491 unixFile *pFile = (unixFile*)id; -

1492 -

1493

SimulateIOError( return SQLITE_IOERR_CHECKRESERVEDLOCK; );

never executed: return (10 | (14<<8));

sqlite3_io_error_persist

Description

TRUE

never evaluated

FALSE

evaluated 2588 times by 258 tests

Evaluated by:

Self test (108)
Self test (109)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
Self test (124)
Self test (125)
Self test (126)
Self test (127)
Self test (128)
Self test (129)
Self test (130)
Self test (131)
Self test (132)
...

sqlite3_io_error_hit	Description
TRUE	never evaluated
FALSE	never evaluated

sqlite3_io_err...pending-- == 1

Description

TRUE

never evaluated

FALSE

evaluated 2588 times by 258 tests

Evaluated by:

Self test (108)
Self test (109)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
Self test (124)
Self test (125)
Self test (126)
Self test (127)
Self test (128)
Self test (129)
Self test (130)
Self test (131)
Self test (132)
...

0-2588

1494 -

1495 assert( pFile ); -

1496 assert( pFile->eFileLock<=SHARED_LOCK ); -

1497 sqlite3_mutex_enter(pFile->pInode->pLockMutex); -

1498 -

1499 /* Check if a thread in this process holds such a lock */ -

1500

if( pFile->pInode->eFileLock>SHARED_LOCK ){

pFile->pInode->eFileLock>1

Description

TRUE

evaluated 67 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 2521 times by 258 tests

Evaluated by:

Self test (108)
Self test (109)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
Self test (124)
Self test (125)
Self test (126)
Self test (127)
Self test (128)
Self test (129)
Self test (130)
Self test (131)
Self test (132)
...

67-2521

1501 reserved = 1; -

1502

}

executed 67 times by 1 test: end of block

Executed by:

Self test (438)

1503 -

1504 /* Otherwise see if some other process holds it. -

1505 */ -

1506 #ifndef __DJGPP__ -

1507

if( !reserved && !pFile->pInode->bProcessLock ){

!reserved

Description

TRUE

evaluated 2521 times by 258 tests

Evaluated by:

Self test (108)
Self test (109)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
Self test (124)
Self test (125)
Self test (126)
Self test (127)
Self test (128)
Self test (129)
Self test (130)
Self test (131)
Self test (132)
...

FALSE

evaluated 67 times by 1 test

Evaluated by:

Self test (438)

!pFile->pInode->bProcessLock

Description

TRUE

evaluated 2521 times by 258 tests

Evaluated by:

Self test (108)
Self test (109)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
Self test (124)
Self test (125)
Self test (126)
Self test (127)
Self test (128)
Self test (129)
Self test (130)
Self test (131)
Self test (132)
...

FALSE

never evaluated

0-2521

1508 struct flock lock; -

1509 lock.l_whence = SEEK_SET; -

1510 lock.l_start = RESERVED_BYTE; -

1511 lock.l_len = 1; -

1512 lock.l_type = F_WRLCK; -

1513

if( osFcntl(pFile->h, F_GETLK, &lock) ){

((int(*)(int,i...>h, 5 , &lock)

Description

TRUE

never evaluated

FALSE

evaluated 2521 times by 258 tests

Evaluated by:

Self test (108)
Self test (109)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
Self test (124)
Self test (125)
Self test (126)
Self test (127)
Self test (128)
Self test (129)
Self test (130)
Self test (131)
Self test (132)
...

0-2521

1514 rc = SQLITE_IOERR_CHECKRESERVEDLOCK; -

1515 storeLastErrno(pFile, errno); -

1516

} else if( lock.l_type!=F_UNLCK ){

never executed: end of block

lock.l_type!= 2

Description

TRUE

evaluated 15 times by 6 tests

Evaluated by:

Self test (30)
Self test (35)
Self test (36)
Self test (438)
Self test (49)
Self test (52)

FALSE

evaluated 2506 times by 253 tests

Evaluated by:

Self test (108)
Self test (109)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
Self test (124)
Self test (125)
Self test (126)
Self test (127)
Self test (128)
Self test (129)
Self test (130)
Self test (131)
Self test (132)
...

0-2506

1517 reserved = 1; -

1518

}

executed 15 times by 6 tests: end of block

Executed by:

Self test (30)
Self test (35)
Self test (36)
Self test (438)
Self test (49)
Self test (52)

1519

}

executed 2521 times by 258 tests: end of block

Executed by:

Self test (108)
Self test (109)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
Self test (124)
Self test (125)
Self test (126)
Self test (127)
Self test (128)
Self test (129)
Self test (130)
Self test (131)
Self test (132)
...

2521

1520 #endif -

1521 -

1522 sqlite3_mutex_leave(pFile->pInode->pLockMutex); -

1523

OSTRACE(("TEST WR-LOCK %d %d %d (unix)\n", pFile->h, rc, reserved));

never executed: sqlite3DebugPrintf ("TEST WR-LOCK %d %d %d (unix)\n", pFile->h, rc, reserved);

sqlite3OSTrace

Description

TRUE

never evaluated

FALSE

evaluated 2588 times by 258 tests

Evaluated by:

Self test (108)
Self test (109)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
Self test (124)
Self test (125)
Self test (126)
Self test (127)
Self test (128)
Self test (129)
Self test (130)
Self test (131)
Self test (132)
...

0-2588

1524 -

1525 *pResOut = reserved; -

1526

return rc;

executed 2588 times by 258 tests: return rc;

Executed by:

Self test (108)
Self test (109)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
Self test (124)
Self test (125)
Self test (126)
Self test (127)
Self test (128)
Self test (129)
Self test (130)
Self test (131)
Self test (132)
...

2588

1527 } -

1528 -

1529 /* -

1530 ** Set a posix-advisory-lock. -

1531 ** -

1532 ** There are two versions of this routine. If compiled with -

1533 ** SQLITE_ENABLE_SETLK_TIMEOUT then the routine has an extra parameter -

1534 ** which is a pointer to a unixFile. If the unixFile->iBusyTimeout -

1535 ** value is set, then it is the number of milliseconds to wait before -

1536 ** failing the lock. The iBusyTimeout value is always reset back to -

1537 ** zero on each call. -

1538 ** -

1539 ** If SQLITE_ENABLE_SETLK_TIMEOUT is not defined, then do a non-blocking -

1540 ** attempt to set the lock. -

1541 */ -

1542 #ifndef SQLITE_ENABLE_SETLK_TIMEOUT -

1543 # define osSetPosixAdvisoryLock(h,x,t) osFcntl(h,F_SETLK,x) -

1544 #else -

1545 static int osSetPosixAdvisoryLock( -

1546 int h, /* The file descriptor on which to take the lock */ -

1547 struct flock *pLock, /* The description of the lock */ -

1548 unixFile *pFile /* Structure holding timeout value */ -

1549 ){ -

1550 int rc = osFcntl(h,F_SETLK,pLock); -

1551 while( rc<0 && pFile->iBusyTimeout>0 ){ -

1552 /* On systems that support some kind of blocking file lock with a timeout, -

1553 ** make appropriate changes here to invoke that blocking file lock. On -

1554 ** generic posix, however, there is no such API. So we simply try the -

1555 ** lock once every millisecond until either the timeout expires, or until -

1556 ** the lock is obtained. */ -

1557 usleep(1000); -

1558 rc = osFcntl(h,F_SETLK,pLock); -

1559 pFile->iBusyTimeout--; -

1560 } -

1561 return rc; -

1562 } -

1563 #endif /* SQLITE_ENABLE_SETLK_TIMEOUT */ -

1564 -

1565 -

1566 /* -

1567 ** Attempt to set a system-lock on the file pFile. The lock is -

1568 ** described by pLock. -

1569 ** -

1570 ** If the pFile was opened read/write from unix-excl, then the only lock -

1571 ** ever obtained is an exclusive lock, and it is obtained exactly once -

1572 ** the first time any lock is attempted. All subsequent system locking -

1573 ** operations become no-ops. Locking operations still happen internally, -

1574 ** in order to coordinate access between separate database connections -

1575 ** within this process, but all of that is handled in memory and the -

1576 ** operating system does not participate. -

1577 ** -

1578 ** This function is a pass-through to fcntl(F_SETLK) if pFile is using -

1579 ** any VFS other than "unix-excl" or if pFile is opened on "unix-excl" -

1580 ** and is read-only. -

1581 ** -

1582 ** Zero is returned if the call completes successfully, or -1 if a call -

1583 ** to fcntl() fails. In this case, errno is set appropriately (by fcntl()). -

1584 */ -

1585 static int unixFileLock(unixFile *pFile, struct flock *pLock){ -

1586 int rc; -

1587 unixInodeInfo *pInode = pFile->pInode; -

1588 assert( pInode!=0 ); -

1589 assert( sqlite3_mutex_held(pInode->pLockMutex) ); -

1590

if( (pFile->ctrlFlags & (UNIXFILE_EXCL|UNIXFILE_RDONLY))==UNIXFILE_EXCL ){

(pFile->ctrlFl...1|0x02))==0x01

Description

TRUE

evaluated 59 times by 2 tests

Evaluated by:

Self test (438)
Self test (61)

FALSE

evaluated 739518 times by 435 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

59-739518

1591

if( pInode->bProcessLock==0 ){

pInode->bProcessLock==0	Description
TRUE	evaluated 5 times by 2 tests Evaluated by: Self test (438) Self test (61)
FALSE	evaluated 54 times by 1 test Evaluated by: Self test (438)

5-54

1592 struct flock lock; -

1593 assert( pInode->nLock==0 ); -

1594 lock.l_whence = SEEK_SET; -

1595 lock.l_start = SHARED_FIRST; -

1596 lock.l_len = SHARED_SIZE; -

1597 lock.l_type = F_WRLCK; -

1598 rc = osSetPosixAdvisoryLock(pFile->h, &lock, pFile); -

1599

if( rc<0 ) return rc;

executed 1 time by 1 test: return rc;

Executed by:

Self test (61)

rc<0	Description
TRUE	evaluated 1 time by 1 test Evaluated by: Self test (61)
FALSE	evaluated 4 times by 1 test Evaluated by: Self test (438)

1-4

1600 pInode->bProcessLock = 1; -

1601 pInode->nLock++; -

1602

}else{

executed 4 times by 1 test: end of block

Executed by:

Self test (438)

1603 rc = 0; -

1604

}

executed 54 times by 1 test: end of block

Executed by:

Self test (438)

1605 }else{ -

1606 rc = osSetPosixAdvisoryLock(pFile->h, pLock, pFile); -

1607

}

executed 739518 times by 435 tests: end of block

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

739518

1608

return rc;

executed 739576 times by 435 tests: return rc;

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

739576

1609 } -

1610 -

1611 /* -

1612 ** Lock the file with the lock specified by parameter eFileLock - one -

1613 ** of the following: -

1614 ** -

1615 ** (1) SHARED_LOCK -

1616 ** (2) RESERVED_LOCK -

1617 ** (3) PENDING_LOCK -

1618 ** (4) EXCLUSIVE_LOCK -

1619 ** -

1620 ** Sometimes when requesting one lock state, additional lock states -

1621 ** are inserted in between. The locking might fail on one of the later -

1622 ** transitions leaving the lock state different from what it started but -

1623 ** still short of its goal. The following chart shows the allowed -

1624 ** transitions and the inserted intermediate states: -

1625 ** -

1626 ** UNLOCKED -> SHARED -

1627 ** SHARED -> RESERVED -

1628 ** SHARED -> (PENDING) -> EXCLUSIVE -

1629 ** RESERVED -> (PENDING) -> EXCLUSIVE -

1630 ** PENDING -> EXCLUSIVE -

1631 ** -

1632 ** This routine will only increase a lock. Use the sqlite3OsUnlock() -

1633 ** routine to lower a locking level. -

1634 */ -

1635 static int unixLock(sqlite3_file *id, int eFileLock){ -

1636 /* The following describes the implementation of the various locks and -

1637 ** lock transitions in terms of the POSIX advisory shared and exclusive -

1638 ** lock primitives (called read-locks and write-locks below, to avoid -

1639 ** confusion with SQLite lock names). The algorithms are complicated -

1640 ** slightly in order to be compatible with Windows95 systems simultaneously -

1641 ** accessing the same database file, in case that is ever required. -

1642 ** -

1643 ** Symbols defined in os.h indentify the 'pending byte' and the 'reserved -

1644 ** byte', each single bytes at well known offsets, and the 'shared byte -

1645 ** range', a range of 510 bytes at a well known offset. -

1646 ** -

1647 ** To obtain a SHARED lock, a read-lock is obtained on the 'pending -

1648 ** byte'. If this is successful, 'shared byte range' is read-locked -

1649 ** and the lock on the 'pending byte' released. (Legacy note: When -

1650 ** SQLite was first developed, Windows95 systems were still very common, -

1651 ** and Widnows95 lacks a shared-lock capability. So on Windows95, a -

1652 ** single randomly selected by from the 'shared byte range' is locked. -

1653 ** Windows95 is now pretty much extinct, but this work-around for the -

1654 ** lack of shared-locks on Windows95 lives on, for backwards -

1655 ** compatibility.) -

1656 ** -

1657 ** A process may only obtain a RESERVED lock after it has a SHARED lock. -

1658 ** A RESERVED lock is implemented by grabbing a write-lock on the -

1659 ** 'reserved byte'. -

1660 ** -

1661 ** A process may only obtain a PENDING lock after it has obtained a -

1662 ** SHARED lock. A PENDING lock is implemented by obtaining a write-lock -

1663 ** on the 'pending byte'. This ensures that no new SHARED locks can be -

1664 ** obtained, but existing SHARED locks are allowed to persist. A process -

1665 ** does not have to obtain a RESERVED lock on the way to a PENDING lock. -

1666 ** This property is used by the algorithm for rolling back a journal file -

1667 ** after a crash. -

1668 ** -

1669 ** An EXCLUSIVE lock, obtained after a PENDING lock is held, is -

1670 ** implemented by obtaining a write-lock on the entire 'shared byte -

1671 ** range'. Since all other locks require a read-lock on one of the bytes -

1672 ** within this range, this ensures that no other locks are held on the -

1673 ** database. -

1674 */ -

1675 int rc = SQLITE_OK; -

1676 unixFile *pFile = (unixFile*)id; -

1677 unixInodeInfo *pInode; -

1678 struct flock lock; -

1679 int tErrno = 0; -

1680 -

1681 assert( pFile ); -

1682

OSTRACE(("LOCK %d %s was %s(%s,%d) pid=%d (unix)\n", pFile->h,

never executed:

sqlite3DebugPrintf ("LOCK %d %s was %s(%s,%d) pid=%d (unix)\n", pFile->h, azFileLock(eFileLock), azFileLock(pFile->eFileLock), azFileLock(pFile->pInode->eFileLock), pFile->pInode->nShared, (pid_t)getpid()) ;

sqlite3OSTrace

Description

TRUE

never evaluated

FALSE

evaluated 219936 times by 436 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

0-219936

1683

azFileLock(eFileLock), azFileLock(pFile->eFileLock),

never executed:

sqlite3DebugPrintf ("LOCK %d %s was %s(%s,%d) pid=%d (unix)\n", pFile->h, azFileLock(eFileLock), azFileLock(pFile->eFileLock), azFileLock(pFile->pInode->eFileLock), pFile->pInode->nShared, (pid_t)getpid()) ;

1684

azFileLock(pFile->pInode->eFileLock), pFile->pInode->nShared,

never executed:

sqlite3DebugPrintf ("LOCK %d %s was %s(%s,%d) pid=%d (unix)\n", pFile->h, azFileLock(eFileLock), azFileLock(pFile->eFileLock), azFileLock(pFile->pInode->eFileLock), pFile->pInode->nShared, (pid_t)getpid()) ;

1685

osGetpid(0)));

never executed:

sqlite3DebugPrintf ("LOCK %d %s was %s(%s,%d) pid=%d (unix)\n", pFile->h, azFileLock(eFileLock), azFileLock(pFile->eFileLock), azFileLock(pFile->pInode->eFileLock), pFile->pInode->nShared, (pid_t)getpid()) ;

1686 -

1687 /* If there is already a lock of this type or more restrictive on the -

1688 ** unixFile, do nothing. Don't use the end_lock: exit path, as -

1689 ** unixEnterMutex() hasn't been called yet. -

1690 */ -

1691

if( pFile->eFileLock>=eFileLock ){

pFile->eFileLock>=eFileLock

Description

TRUE

evaluated 29 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 219907 times by 436 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

29-219907

1692

OSTRACE(("LOCK %d %s ok (already held) (unix)\n", pFile->h,

never executed: sqlite3DebugPrintf ("LOCK %d %s ok (already held) (unix)\n", pFile->h, azFileLock(eFileLock)) ;

sqlite3OSTrace	Description
TRUE	never evaluated
FALSE	evaluated 29 times by 1 test Evaluated by: Self test (438)

0-29

1693

azFileLock(eFileLock)));

never executed: sqlite3DebugPrintf ("LOCK %d %s ok (already held) (unix)\n", pFile->h, azFileLock(eFileLock)) ;

1694

return SQLITE_OK;

executed 29 times by 1 test: return 0;

Executed by:

Self test (438)

1695 } -

1696 -

1697 /* Make sure the locking sequence is correct. -

1698 ** (1) We never move from unlocked to anything higher than shared lock. -

1699 ** (2) SQLite never explicitly requests a pendig lock. -

1700 ** (3) A shared lock is always held when a reserve lock is requested. -

1701 */ -

1702 assert( pFile->eFileLock!=NO_LOCK || eFileLock==SHARED_LOCK ); -

1703 assert( eFileLock!=PENDING_LOCK ); -

1704 assert( eFileLock!=RESERVED_LOCK || pFile->eFileLock==SHARED_LOCK ); -

1705 -

1706 /* This mutex is needed because pFile->pInode is shared across threads -

1707 */ -

1708 pInode = pFile->pInode; -

1709 sqlite3_mutex_enter(pInode->pLockMutex); -

1710 -

1711 /* If some thread using this PID has a lock via a different unixFile* -

1712 ** handle that precludes the requested lock, return BUSY. -

1713 */ -

1714

if( (pFile->eFileLock!=pInode->eFileLock &&

pFile->eFileLo...ode->eFileLock

Description

TRUE

evaluated 1767 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 218140 times by 436 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

1767-218140

1715

(pInode->eFileLock>=PENDING_LOCK || eFileLock>SHARED_LOCK))

pInode->eFileLock>=3	Description
TRUE	evaluated 1037 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 730 times by 1 test Evaluated by: Self test (438)

eFileLock>1	Description
TRUE	evaluated 64 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 666 times by 1 test Evaluated by: Self test (438)

64-1037

1716 ){ -

1717 rc = SQLITE_BUSY; -

1718

goto end_lock;

executed 1101 times by 1 test: goto end_lock;

Executed by:

Self test (438)

1101

1719 } -

1720 -

1721 /* If a SHARED lock is requested, and some thread using this PID already -

1722 ** has a SHARED or RESERVED lock, then increment reference counts and -

1723 ** return SQLITE_OK. -

1724 */ -

1725

if( eFileLock==SHARED_LOCK &&

eFileLock==1

Description

TRUE

evaluated 132410 times by 436 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

FALSE

evaluated 86396 times by 416 tests

Evaluated by:

Self test
Self test (10)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
Self test (122)
...

86396-132410

1726

(pInode->eFileLock==SHARED_LOCK || pInode->eFileLock==RESERVED_LOCK) ){

pInode->eFileLock==1

Description

TRUE

evaluated 526 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 131884 times by 436 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

pInode->eFileLock==2

Description

TRUE

evaluated 140 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 131744 times by 436 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

140-131884

1727 assert( eFileLock==SHARED_LOCK ); -

1728 assert( pFile->eFileLock==0 ); -

1729 assert( pInode->nShared>0 ); -

1730 pFile->eFileLock = SHARED_LOCK; -

1731 pInode->nShared++; -

1732 pInode->nLock++; -

1733

goto end_lock;

executed 666 times by 1 test: goto end_lock;

Executed by:

Self test (438)

666

1734 } -

1735 -

1736 -

1737 /* A PENDING lock is needed before acquiring a SHARED lock and before -

1738 ** acquiring an EXCLUSIVE lock. For the SHARED lock, the PENDING will -

1739 ** be released. -

1740 */ -

1741 lock.l_len = 1L; -

1742 lock.l_whence = SEEK_SET; -

1743

if( eFileLock==SHARED_LOCK

eFileLock==1

Description

TRUE

evaluated 131744 times by 436 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

FALSE

evaluated 86396 times by 416 tests

Evaluated by:

Self test
Self test (10)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
Self test (122)
...

86396-131744

1744

|| (eFileLock==EXCLUSIVE_LOCK && pFile->eFileLock<PENDING_LOCK)

eFileLock==4

Description

TRUE

evaluated 43293 times by 167 tests

Evaluated by:

Self test
Self test (10)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (11)
Self test (12)
Self test (13)
Self test (14)
Self test (15)
Self test (16)
Self test (17)
Self test (18)
Self test (19)
Self test (2)
Self test (20)
Self test (21)
Self test (22)
Self test (23)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
...

FALSE

evaluated 43103 times by 382 tests

Evaluated by:

Self test
Self test (10)
Self test (101)
Self test (104)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
Self test (124)
...

pFile->eFileLock<3

Description

TRUE

evaluated 41439 times by 167 tests

Evaluated by:

Self test
Self test (10)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (11)
Self test (12)
Self test (13)
Self test (14)
Self test (15)
Self test (16)
Self test (17)
Self test (18)
Self test (19)
Self test (2)
Self test (20)
Self test (21)
Self test (22)
Self test (23)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
...

FALSE

evaluated 1854 times by 2 tests

Evaluated by:

Self test (38)
Self test (438)

1854-43293

1745 ){ -

1746

lock.l_type = (eFileLock==SHARED_LOCK?F_RDLCK:F_WRLCK);

eFileLock==1

Description

TRUE

evaluated 131744 times by 436 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

FALSE

evaluated 41439 times by 167 tests

Evaluated by:

Self test
Self test (10)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (11)
Self test (12)
Self test (13)
Self test (14)
Self test (15)
Self test (16)
Self test (17)
Self test (18)
Self test (19)
Self test (2)
Self test (20)
Self test (21)
Self test (22)
Self test (23)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
...

41439-131744

1747 lock.l_start = PENDING_BYTE; -

1748

if( unixFileLock(pFile, &lock) ){

unixFileLock(pFile, &lock)

Description

TRUE

evaluated 11 times by 7 tests

Evaluated by:

Self test (30)
Self test (31)
Self test (35)
Self test (36)
Self test (37)
Self test (438)
Self test (61)

FALSE

evaluated 173172 times by 435 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

11-173172

1749 tErrno = errno; -

1750 rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_LOCK); -

1751

if( rc!=SQLITE_BUSY ){

rc!=5	Description
TRUE	evaluated 3 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 8 times by 7 tests Evaluated by: Self test (30) Self test (31) Self test (35) Self test (36) Self test (37) Self test (438) Self test (61)

3-8

1752 storeLastErrno(pFile, tErrno); -

1753

}

executed 3 times by 1 test: end of block

Executed by:

Self test (438)

1754

goto end_lock;

executed 11 times by 7 tests: goto end_lock;

Executed by:

Self test (30)
Self test (31)
Self test (35)
Self test (36)
Self test (37)
Self test (438)
Self test (61)

1755 } -

1756

}

executed 173172 times by 435 tests: end of block

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

173172

1757 -

1758 -

1759 /* If control gets to this point, then actually go ahead and make -

1760 ** operating system calls for the specified lock. -

1761 */ -

1762

if( eFileLock==SHARED_LOCK ){

eFileLock==1

Description

TRUE

evaluated 131737 times by 435 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

FALSE

evaluated 86392 times by 415 tests

Evaluated by:

Self test
Self test (10)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
Self test (122)
...

86392-131737

1763 assert( pInode->nShared==0 ); -

1764 assert( pInode->eFileLock==0 ); -

1765 assert( rc==SQLITE_OK ); -

1766 -

1767 /* Now get the read-lock */ -

1768 lock.l_start = SHARED_FIRST; -

1769 lock.l_len = SHARED_SIZE; -

1770

if( unixFileLock(pFile, &lock) ){

unixFileLock(pFile, &lock)

Description

TRUE

evaluated 1 time by 1 test

Evaluated by:

Self test (59)

FALSE

evaluated 131736 times by 435 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

1-131736

1771 tErrno = errno; -

1772 rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_LOCK); -

1773

}

executed 1 time by 1 test: end of block

Executed by:

Self test (59)

1774 -

1775 /* Drop the temporary PENDING lock */ -

1776 lock.l_start = PENDING_BYTE; -

1777 lock.l_len = 1L; -

1778 lock.l_type = F_UNLCK; -

1779

if( unixFileLock(pFile, &lock) && rc==SQLITE_OK ){

unixFileLock(pFile, &lock)

Description

TRUE

never evaluated

FALSE

evaluated 131737 times by 435 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

rc==0	Description
TRUE	never evaluated
FALSE	never evaluated

0-131737

1780 /* This could happen with a network mount */ -

1781 tErrno = errno; -

1782 rc = SQLITE_IOERR_UNLOCK; -

1783

}

never executed: end of block

1784 -

1785

if( rc ){

Description

TRUE

evaluated 1 time by 1 test

Evaluated by:

Self test (59)

FALSE

evaluated 131736 times by 435 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

1-131736

1786

if( rc!=SQLITE_BUSY ){

rc!=5	Description
TRUE	never evaluated
FALSE	evaluated 1 time by 1 test Evaluated by: Self test (59)

0-1

1787 storeLastErrno(pFile, tErrno); -

1788

}

never executed: end of block

1789

goto end_lock;

executed 1 time by 1 test: goto end_lock;

Executed by:

Self test (59)

1790 }else{ -

1791 pFile->eFileLock = SHARED_LOCK; -

1792 pInode->nLock++; -

1793 pInode->nShared = 1; -

1794

}

executed 131736 times by 435 tests: end of block

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

131736

1795

}else if( eFileLock==EXCLUSIVE_LOCK && pInode->nShared>1 ){

eFileLock==4

Description

TRUE

evaluated 43289 times by 166 tests

Evaluated by:

Self test
Self test (10)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (11)
Self test (12)
Self test (13)
Self test (14)
Self test (15)
Self test (16)
Self test (17)
Self test (18)
Self test (19)
Self test (2)
Self test (20)
Self test (21)
Self test (22)
Self test (23)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
...

FALSE

evaluated 43103 times by 382 tests

Evaluated by:

Self test
Self test (10)
Self test (101)
Self test (104)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
Self test (124)
...

pInode->nShared>1

Description

TRUE

evaluated 2304 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 40985 times by 166 tests

Evaluated by:

Self test
Self test (10)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (11)
Self test (12)
Self test (13)
Self test (14)
Self test (15)
Self test (16)
Self test (17)
Self test (18)
Self test (19)
Self test (2)
Self test (20)
Self test (21)
Self test (22)
Self test (23)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
...

2304-43289

1796 /* We are trying for an exclusive lock but another thread in this -

1797 ** same process is still holding a shared lock. */ -

1798 rc = SQLITE_BUSY; -

1799

}else{

executed 2304 times by 1 test: end of block

Executed by:

Self test (438)

2304

1800 /* The request was for a RESERVED or EXCLUSIVE lock. It is -

1801 ** assumed that there is a SHARED or greater lock on the file -

1802 ** already. -

1803 */ -

1804 assert( 0!=pFile->eFileLock ); -

1805 lock.l_type = F_WRLCK; -

1806 -

1807 assert( eFileLock==RESERVED_LOCK || eFileLock==EXCLUSIVE_LOCK ); -

1808

if( eFileLock==RESERVED_LOCK ){

eFileLock==2

Description

TRUE

evaluated 43103 times by 382 tests

Evaluated by:

Self test
Self test (10)
Self test (101)
Self test (104)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
Self test (124)
...

FALSE

evaluated 40985 times by 166 tests

Evaluated by:

Self test
Self test (10)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (11)
Self test (12)
Self test (13)
Self test (14)
Self test (15)
Self test (16)
Self test (17)
Self test (18)
Self test (19)
Self test (2)
Self test (20)
Self test (21)
Self test (22)
Self test (23)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
...

40985-43103

1809 lock.l_start = RESERVED_BYTE; -

1810 lock.l_len = 1L; -

1811

}else{

executed 43103 times by 382 tests: end of block

Executed by:

Self test
Self test (10)
Self test (101)
Self test (104)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
Self test (124)
...

43103

1812 lock.l_start = SHARED_FIRST; -

1813 lock.l_len = SHARED_SIZE; -

1814

}

executed 40985 times by 166 tests: end of block

Executed by:

Self test
Self test (10)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (11)
Self test (12)
Self test (13)
Self test (14)
Self test (15)
Self test (16)
Self test (17)
Self test (18)
Self test (19)
Self test (2)
Self test (20)
Self test (21)
Self test (22)
Self test (23)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
...

40985

1815 -

1816

if( unixFileLock(pFile, &lock) ){

unixFileLock(pFile, &lock)

Description

TRUE

evaluated 78 times by 39 tests

Evaluated by:

Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (30)
Self test (35)
Self test (38)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (52)
Self test (55)
Self test (62)
Self test (63)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
...

FALSE

evaluated 84010 times by 387 tests

Evaluated by:

Self test
Self test (10)
Self test (101)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
...

78-84010

1817 tErrno = errno; -

1818 rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_LOCK); -

1819

if( rc!=SQLITE_BUSY ){

rc!=5

Description

TRUE

never evaluated

FALSE

evaluated 78 times by 39 tests

Evaluated by:

Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (30)
Self test (35)
Self test (38)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (52)
Self test (55)
Self test (62)
Self test (63)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
...

0-78

1820 storeLastErrno(pFile, tErrno); -

1821

}

never executed: end of block

1822

}

executed 78 times by 39 tests: end of block

Executed by:

Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (30)
Self test (35)
Self test (38)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (52)
Self test (55)
Self test (62)
Self test (63)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
...

1823

}

executed 84088 times by 415 tests: end of block

Executed by:

Self test
Self test (10)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
Self test (122)
...

84088

1824 -

1825 -

1826 #ifdef SQLITE_DEBUG -

1827 /* Set up the transaction-counter change checking flags when -

1828 ** transitioning from a SHARED to a RESERVED lock. The change -

1829 ** from SHARED to RESERVED marks the beginning of a normal -

1830 ** write operation (not a hot journal rollback). -

1831 */ -

1832 if( rc==SQLITE_OK -

1833 && pFile->eFileLock<=SHARED_LOCK -

1834 && eFileLock==RESERVED_LOCK -

1835 ){ -

1836 pFile->transCntrChng = 0; -

1837 pFile->dbUpdate = 0; -

1838 pFile->inNormalWrite = 1; -

1839 } -

1840 #endif -

1841 -

1842 -

1843

if( rc==SQLITE_OK ){

rc==0

Description

TRUE

evaluated 215746 times by 435 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

FALSE

evaluated 2382 times by 39 tests

Evaluated by:

Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (30)
Self test (35)
Self test (38)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (52)
Self test (55)
Self test (62)
Self test (63)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
...

2382-215746

1844 pFile->eFileLock = eFileLock; -

1845 pInode->eFileLock = eFileLock; -

1846

}else if( eFileLock==EXCLUSIVE_LOCK ){

executed 215746 times by 435 tests: end of block

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

eFileLock==4

Description

TRUE

evaluated 2374 times by 36 tests

Evaluated by:

Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (38)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (55)
Self test (62)
Self test (63)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (74)
Self test (75)
Self test (76)
...

FALSE

evaluated 8 times by 4 tests

Evaluated by:

Self test (30)
Self test (35)
Self test (438)
Self test (52)

8-215746

1847 pFile->eFileLock = PENDING_LOCK; -

1848 pInode->eFileLock = PENDING_LOCK; -

1849

}

executed 2374 times by 36 tests: end of block

Executed by:

Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (38)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (55)
Self test (62)
Self test (63)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (74)
Self test (75)
Self test (76)
...

2374

1850 -

1851

end_lock:

code before this statement executed 218128 times by 435 tests: end_lock:

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

218128

1852 sqlite3_mutex_leave(pInode->pLockMutex); -

1853

OSTRACE(("LOCK %d %s %s (unix)\n", pFile->h, azFileLock(eFileLock),

never executed: sqlite3DebugPrintf ("LOCK %d %s %s (unix)\n", pFile->h, azFileLock(eFileLock), rc==0 ? "ok" : "failed") ;

sqlite3OSTrace

Description

TRUE

never evaluated

FALSE

evaluated 219907 times by 436 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

0-219907

1854

rc==SQLITE_OK ? "ok" : "failed"));

never executed: sqlite3DebugPrintf ("LOCK %d %s %s (unix)\n", pFile->h, azFileLock(eFileLock), rc==0 ? "ok" : "failed") ;

1855

return rc;

executed 219907 times by 436 tests: return rc;

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

219907

1856 } -

1857 -

1858 /* -

1859 ** Add the file descriptor used by file handle pFile to the corresponding -

1860 ** pUnused list. -

1861 */ -

1862 static void setPendingFd(unixFile *pFile){ -

1863 unixInodeInfo *pInode = pFile->pInode; -

1864 UnixUnusedFd *p = pFile->pPreallocatedUnused; -

1865 assert( unixFileMutexHeld(pFile) ); -

1866 p->pNext = pInode->pUnused; -

1867 pInode->pUnused = p; -

1868 pFile->h = -1; -

1869 pFile->pPreallocatedUnused = 0; -

1870

}

executed 10551 times by 1 test: end of block

Executed by:

Self test (438)

10551

1871 -

1872 /* -

1873 ** Lower the locking level on file descriptor pFile to eFileLock. eFileLock -

1874 ** must be either NO_LOCK or SHARED_LOCK. -

1875 ** -

1876 ** If the locking level of the file descriptor is already at or below -

1877 ** the requested locking level, this routine is a no-op. -

1878 ** -

1879 ** If handleNFSUnlock is true, then on downgrading an EXCLUSIVE_LOCK to SHARED -

1880 ** the byte range is divided into 2 parts and the first part is unlocked then -

1881 ** set to a read lock, then the other part is simply unlocked. This works -

1882 ** around a bug in BSD NFS lockd (also seen on MacOSX 10.3+) that fails to -

1883 ** remove the write lock on a region when a read lock is set. -

1884 */ -

1885 static int posixUnlock(sqlite3_file *id, int eFileLock, int handleNFSUnlock){ -

1886 unixFile *pFile = (unixFile*)id; -

1887 unixInodeInfo *pInode; -

1888 struct flock lock; -

1889 int rc = SQLITE_OK; -

1890 -

1891 assert( pFile ); -

1892

OSTRACE(("UNLOCK %d %d was %d(%d,%d) pid=%d (unix)\n", pFile->h, eFileLock,

never executed:

sqlite3DebugPrintf ("UNLOCK %d %d was %d(%d,%d) pid=%d (unix)\n", pFile->h, eFileLock, pFile->eFileLock, pFile->pInode->eFileLock, pFile->pInode->nShared, (pid_t)getpid()) ;

sqlite3OSTrace

Description

TRUE

never evaluated

FALSE

evaluated 237194 times by 427 tests

Evaluated by:

Self test
Self test (10)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

0-237194

1893

pFile->eFileLock, pFile->pInode->eFileLock, pFile->pInode->nShared,

never executed:

sqlite3DebugPrintf ("UNLOCK %d %d was %d(%d,%d) pid=%d (unix)\n", pFile->h, eFileLock, pFile->eFileLock, pFile->pInode->eFileLock, pFile->pInode->nShared, (pid_t)getpid()) ;

1894

osGetpid(0)));

never executed:

sqlite3DebugPrintf ("UNLOCK %d %d was %d(%d,%d) pid=%d (unix)\n", pFile->h, eFileLock, pFile->eFileLock, pFile->pInode->eFileLock, pFile->pInode->nShared, (pid_t)getpid()) ;

1895 -

1896 assert( eFileLock<=SHARED_LOCK ); -

1897

if( pFile->eFileLock<=eFileLock ){

pFile->eFileLock<=eFileLock

Description

TRUE

evaluated 62228 times by 66 tests

Evaluated by:

Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (24)
Self test (25)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (30)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (35)
Self test (36)
Self test (37)
Self test (38)
Self test (39)
Self test (40)
Self test (41)
Self test (42)
Self test (43)
...

FALSE

evaluated 174966 times by 424 tests

Evaluated by:

Self test
Self test (10)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
Self test (122)
...

62228-174966

1898

return SQLITE_OK;

executed 62228 times by 66 tests: return 0;

Executed by:

Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (24)
Self test (25)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (30)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (35)
Self test (36)
Self test (37)
Self test (38)
Self test (39)
Self test (40)
Self test (41)
Self test (42)
Self test (43)
...

62228

1899 } -

1900 pInode = pFile->pInode; -

1901 sqlite3_mutex_enter(pInode->pLockMutex); -

1902 assert( pInode->nShared!=0 ); -

1903

if( pFile->eFileLock>SHARED_LOCK ){

pFile->eFileLock>1

Description

TRUE

evaluated 44532 times by 71 tests

Evaluated by:

Self test
Self test (10)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (11)
Self test (14)
Self test (15)
Self test (18)
Self test (19)
Self test (2)
Self test (22)
Self test (23)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (3)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (38)
...

FALSE

evaluated 130434 times by 397 tests

Evaluated by:

Self test
Self test (10)
Self test (101)
Self test (104)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
Self test (124)
...

44532-130434

1904 assert( pInode->eFileLock==pFile->eFileLock ); -

1905 -

1906 #ifdef SQLITE_DEBUG -

1907 /* When reducing a lock such that other processes can start -

1908 ** reading the database file again, make sure that the -

1909 ** transaction counter was updated if any part of the database -

1910 ** file changed. If the transaction counter is not updated, -

1911 ** other connections to the same file might not realize that -

1912 ** the file has changed and hence might not know to flush their -

1913 ** cache. The use of a stale cache can lead to database corruption. -

1914 */ -

1915 pFile->inNormalWrite = 0; -

1916 #endif -

1917 -

1918 /* downgrading to a shared lock on NFS involves clearing the write lock -

1919 ** before establishing the readlock - to avoid a race condition we downgrade -

1920 ** the lock in 2 blocks, so that part of the range will be covered by a -

1921 ** write lock until the rest is covered by a read lock: -

1922 ** 1: [WWWWW] -

1923 ** 2: [....W] -

1924 ** 3: [RRRRW] -

1925 ** 4: [RRRR.] -

1926 */ -

1927

if( eFileLock==SHARED_LOCK ){

eFileLock==1

Description

TRUE

evaluated 42930 times by 38 tests

Evaluated by:

Self test
Self test (10)
Self test (101)
Self test (104)
Self test (11)
Self test (14)
Self test (15)
Self test (18)
Self test (19)
Self test (2)
Self test (22)
Self test (23)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (3)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (38)
Self test (39)
Self test (40)
Self test (42)
...

FALSE

evaluated 1602 times by 37 tests

Evaluated by:

Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
Self test (75)
Self test (76)
Self test (78)
...

1602-42930

1928 #if !defined(__APPLE__) || !SQLITE_ENABLE_LOCKING_STYLE -

1929 (void)handleNFSUnlock; -

1930 assert( handleNFSUnlock==0 ); -

1931 #endif -

1932 #if defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE -

1933 if( handleNFSUnlock ){ -

1934 int tErrno; /* Error code from system call errors */ -

1935 off_t divSize = SHARED_SIZE - 1; -

1936 -

1937 lock.l_type = F_UNLCK; -

1938 lock.l_whence = SEEK_SET; -

1939 lock.l_start = SHARED_FIRST; -

1940 lock.l_len = divSize; -

1941 if( unixFileLock(pFile, &lock)==(-1) ){ -

1942 tErrno = errno; -

1943 rc = SQLITE_IOERR_UNLOCK; -

1944 storeLastErrno(pFile, tErrno); -

1945 goto end_unlock; -

1946 } -

1947 lock.l_type = F_RDLCK; -

1948 lock.l_whence = SEEK_SET; -

1949 lock.l_start = SHARED_FIRST; -

1950 lock.l_len = divSize; -

1951 if( unixFileLock(pFile, &lock)==(-1) ){ -

1952 tErrno = errno; -

1953 rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_RDLOCK); -

1954 if( IS_LOCK_ERROR(rc) ){ -

1955 storeLastErrno(pFile, tErrno); -

1956 } -

1957 goto end_unlock; -

1958 } -

1959 lock.l_type = F_UNLCK; -

1960 lock.l_whence = SEEK_SET; -

1961 lock.l_start = SHARED_FIRST+divSize; -

1962 lock.l_len = SHARED_SIZE-divSize; -

1963 if( unixFileLock(pFile, &lock)==(-1) ){ -

1964 tErrno = errno; -

1965 rc = SQLITE_IOERR_UNLOCK; -

1966 storeLastErrno(pFile, tErrno); -

1967 goto end_unlock; -

1968 } -

1969 }else -

1970 #endif /* defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE */ -

1971 { -

1972 lock.l_type = F_RDLCK; -

1973 lock.l_whence = SEEK_SET; -

1974 lock.l_start = SHARED_FIRST; -

1975 lock.l_len = SHARED_SIZE; -

1976

if( unixFileLock(pFile, &lock) ){

unixFileLock(pFile, &lock)

Description

TRUE

never evaluated

FALSE

evaluated 42930 times by 38 tests

Evaluated by:

Self test
Self test (10)
Self test (101)
Self test (104)
Self test (11)
Self test (14)
Self test (15)
Self test (18)
Self test (19)
Self test (2)
Self test (22)
Self test (23)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (3)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (38)
Self test (39)
Self test (40)
Self test (42)
...

0-42930

1977 /* In theory, the call to unixFileLock() cannot fail because another -

1978 ** process is holding an incompatible lock. If it does, this -

1979 ** indicates that the other process is not following the locking -

1980 ** protocol. If this happens, return SQLITE_IOERR_RDLOCK. Returning -

1981 ** SQLITE_BUSY would confuse the upper layer (in practice it causes -

1982 ** an assert to fail). */ -

1983 rc = SQLITE_IOERR_RDLOCK; -

1984 storeLastErrno(pFile, errno); -

1985

goto end_unlock;

never executed: goto end_unlock;

1986 } -

1987 } -

1988

}

executed 42930 times by 38 tests: end of block

Executed by:

Self test
Self test (10)
Self test (101)
Self test (104)
Self test (11)
Self test (14)
Self test (15)
Self test (18)
Self test (19)
Self test (2)
Self test (22)
Self test (23)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (3)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (38)
Self test (39)
Self test (40)
Self test (42)
...

42930

1989 lock.l_type = F_UNLCK; -

1990 lock.l_whence = SEEK_SET; -

1991 lock.l_start = PENDING_BYTE; -

1992 lock.l_len = 2L; assert( PENDING_BYTE+1==RESERVED_BYTE ); -

1993

if( unixFileLock(pFile, &lock)==0 ){

unixFileLock(pFile, &lock)==0

Description

TRUE

evaluated 44532 times by 71 tests

Evaluated by:

Self test
Self test (10)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (11)
Self test (14)
Self test (15)
Self test (18)
Self test (19)
Self test (2)
Self test (22)
Self test (23)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (3)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (38)
...

FALSE

never evaluated

0-44532

1994 pInode->eFileLock = SHARED_LOCK; -

1995

}else{

executed 44532 times by 71 tests: end of block

Executed by:

Self test
Self test (10)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (11)
Self test (14)
Self test (15)
Self test (18)
Self test (19)
Self test (2)
Self test (22)
Self test (23)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (3)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (38)
...

44532

1996 rc = SQLITE_IOERR_UNLOCK; -

1997 storeLastErrno(pFile, errno); -

1998

goto end_unlock;

never executed: goto end_unlock;

1999 } -

2000 } -

2001

if( eFileLock==NO_LOCK ){

eFileLock==0

Description

TRUE

evaluated 132036 times by 424 tests

Evaluated by:

Self test
Self test (10)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
Self test (122)
...

FALSE

evaluated 42930 times by 38 tests

Evaluated by:

Self test
Self test (10)
Self test (101)
Self test (104)
Self test (11)
Self test (14)
Self test (15)
Self test (18)
Self test (19)
Self test (2)
Self test (22)
Self test (23)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (3)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (38)
Self test (39)
Self test (40)
Self test (42)
...

42930-132036

2002 /* Decrement the shared lock counter. Release the lock using an -

2003 ** OS call only when all threads in this same process have released -

2004 ** the lock. -

2005 */ -

2006 pInode->nShared--; -

2007

if( pInode->nShared==0 ){

pInode->nShared==0

Description

TRUE

evaluated 131370 times by 424 tests

Evaluated by:

Self test
Self test (10)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
Self test (122)
...

FALSE

evaluated 666 times by 1 test

Evaluated by:

Self test (438)

666-131370

2008 lock.l_type = F_UNLCK; -

2009 lock.l_whence = SEEK_SET; -

2010 lock.l_start = lock.l_len = 0L; -

2011

if( unixFileLock(pFile, &lock)==0 ){

unixFileLock(pFile, &lock)==0

Description

TRUE

evaluated 131370 times by 424 tests

Evaluated by:

Self test
Self test (10)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
Self test (122)
...

FALSE

never evaluated

0-131370

2012 pInode->eFileLock = NO_LOCK; -

2013

}else{

executed 131370 times by 424 tests: end of block

Executed by:

Self test
Self test (10)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
Self test (122)
...

131370

2014 rc = SQLITE_IOERR_UNLOCK; -

2015 storeLastErrno(pFile, errno); -

2016 pInode->eFileLock = NO_LOCK; -

2017 pFile->eFileLock = NO_LOCK; -

2018

}

never executed: end of block

2019 } -

2020 -

2021 /* Decrement the count of locks against this same file. When the -

2022 ** count reaches zero, close any other file descriptors whose close -

2023 ** was deferred because of outstanding locks. -

2024 */ -

2025 pInode->nLock--; -

2026 assert( pInode->nLock>=0 ); -

2027

if( pInode->nLock==0 ) closePendingFds(pFile);

executed 131359 times by 424 tests: closePendingFds(pFile);

Executed by:

Self test
Self test (10)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
Self test (122)
...

pInode->nLock==0

Description

TRUE

evaluated 131359 times by 424 tests

Evaluated by:

Self test
Self test (10)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
Self test (122)
...

FALSE

evaluated 677 times by 1 test

Evaluated by:

Self test (438)

677-131359

2028

}

executed 132036 times by 424 tests: end of block

Executed by:

Self test
Self test (10)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
Self test (122)
...

132036

2029 -

2030

end_unlock:

code before this statement executed 174966 times by 424 tests: end_unlock:

Executed by:

Self test
Self test (10)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
Self test (122)
...

174966

2031 sqlite3_mutex_leave(pInode->pLockMutex); -

2032

if( rc==SQLITE_OK ){

rc==0

Description

TRUE

evaluated 174966 times by 424 tests

Evaluated by:

Self test
Self test (10)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
Self test (122)
...

FALSE

never evaluated

0-174966

2033 pFile->eFileLock = eFileLock; -

2034

}

executed 174966 times by 424 tests: end of block

Executed by:

Self test
Self test (10)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
Self test (122)
...

174966

2035

return rc;

executed 174966 times by 424 tests: return rc;

Executed by:

Self test
Self test (10)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
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Self test (122)
...

174966

2036 } -

2037 -

2038 /* -

2039 ** Lower the locking level on file descriptor pFile to eFileLock. eFileLock -

2040 ** must be either NO_LOCK or SHARED_LOCK. -

2041 ** -

2042 ** If the locking level of the file descriptor is already at or below -

2043 ** the requested locking level, this routine is a no-op. -

2044 */ -

2045 static int unixUnlock(sqlite3_file *id, int eFileLock){ -

2046 #if SQLITE_MAX_MMAP_SIZE>0 -

2047 assert( eFileLock==SHARED_LOCK || ((unixFile *)id)->nFetchOut==0 ); -

2048 #endif -

2049

return posixUnlock(id, eFileLock, 0);

executed 237194 times by 427 tests: return posixUnlock(id, eFileLock, 0);

Executed by:

Self test
Self test (10)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

237194

2050 } -

2051 -

2052 #if SQLITE_MAX_MMAP_SIZE>0 -

2053 static int unixMapfile(unixFile *pFd, i64 nByte); -

2054 static void unixUnmapfile(unixFile *pFd); -

2055 #endif -

2056 -

2057 /* -

2058 ** This function performs the parts of the "close file" operation -

2059 ** common to all locking schemes. It closes the directory and file -

2060 ** handles, if they are valid, and sets all fields of the unixFile -

2061 ** structure to 0. -

2062 ** -

2063 ** It is *not* necessary to hold the mutex when this routine is called, -

2064 ** even on VxWorks. A mutex will be acquired on VxWorks by the -

2065 ** vxworksReleaseFileId() routine. -

2066 */ -

2067 static int closeUnixFile(sqlite3_file *id){ -

2068 unixFile *pFile = (unixFile*)id; -

2069 #if SQLITE_MAX_MMAP_SIZE>0 -

2070 unixUnmapfile(pFile); -

2071 #endif -

2072

if( pFile->h>=0 ){

pFile->h>=0

Description

TRUE

evaluated 65945 times by 334 tests

Evaluated by:

Self test
Self test (10)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
Self test (124)
...

FALSE

evaluated 10551 times by 1 test

Evaluated by:

Self test (438)

10551-65945

2073 robust_close(pFile, pFile->h, __LINE__); -

2074 pFile->h = -1; -

2075

}

executed 65945 times by 334 tests: end of block

Executed by:

Self test
Self test (10)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
Self test (124)
...

65945

2076 #if OS_VXWORKS -

2077 if( pFile->pId ){ -

2078 if( pFile->ctrlFlags & UNIXFILE_DELETE ){ -

2079 osUnlink(pFile->pId->zCanonicalName); -

2080 } -

2081 vxworksReleaseFileId(pFile->pId); -

2082 pFile->pId = 0; -

2083 } -

2084 #endif -

2085 #ifdef SQLITE_UNLINK_AFTER_CLOSE -

2086 if( pFile->ctrlFlags & UNIXFILE_DELETE ){ -

2087 osUnlink(pFile->zPath); -

2088 sqlite3_free(*(char**)&pFile->zPath); -

2089 pFile->zPath = 0; -

2090 } -

2091 #endif -

2092

OSTRACE(("CLOSE %-3d\n", pFile->h));

never executed: sqlite3DebugPrintf ("CLOSE %-3d\n", pFile->h);

sqlite3OSTrace

Description

TRUE

never evaluated

FALSE

evaluated 76496 times by 334 tests

Evaluated by:

Self test
Self test (10)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
Self test (124)
...

0-76496

2093 OpenCounter(-1); -

2094 sqlite3_free(pFile->pPreallocatedUnused); -

2095 memset(pFile, 0, sizeof(unixFile)); -

2096

return SQLITE_OK;

executed 76496 times by 334 tests: return 0;

Executed by:

Self test
Self test (10)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
Self test (124)
...

76496

2097 } -

2098 -

2099 /* -

2100 ** Close a file. -

2101 */ -

2102 static int unixClose(sqlite3_file *id){ -

2103 int rc = SQLITE_OK; -

2104 unixFile *pFile = (unixFile *)id; -

2105 unixInodeInfo *pInode = pFile->pInode; -

2106 -

2107 assert( pInode!=0 ); -

2108 verifyDbFile(pFile); -

2109 unixUnlock(id, NO_LOCK); -

2110 assert( unixFileMutexNotheld(pFile) ); -

2111 unixEnterMutex(); -

2112 -

2113 /* unixFile.pInode is always valid here. Otherwise, a different close -

2114 ** routine (e.g. nolockClose()) would be called instead. -

2115 */ -

2116 assert( pFile->pInode->nLock>0 || pFile->pInode->bProcessLock==0 ); -

2117 sqlite3_mutex_enter(pInode->pLockMutex); -

2118

if( pInode->nLock ){

pInode->nLock

Description

TRUE

evaluated 10551 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 21306 times by 66 tests

Evaluated by:

Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (24)
Self test (25)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (30)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (35)
Self test (36)
Self test (37)
Self test (38)
Self test (39)
Self test (40)
Self test (41)
Self test (42)
Self test (43)
...

10551-21306

2119 /* If there are outstanding locks, do not actually close the file just -

2120 ** yet because that would clear those locks. Instead, add the file -

2121 ** descriptor to pInode->pUnused list. It will be automatically closed -

2122 ** when the last lock is cleared. -

2123 */ -

2124 setPendingFd(pFile); -

2125

}

executed 10551 times by 1 test: end of block

Executed by:

Self test (438)

10551

2126 sqlite3_mutex_leave(pInode->pLockMutex); -

2127 releaseInodeInfo(pFile); -

2128 rc = closeUnixFile(id); -

2129 unixLeaveMutex(); -

2130

return rc;

executed 31857 times by 66 tests: return rc;

Executed by:

Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (24)
Self test (25)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (30)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (35)
Self test (36)
Self test (37)
Self test (38)
Self test (39)
Self test (40)
Self test (41)
Self test (42)
Self test (43)
...

31857

2131 } -

2132 -

2133 /************** End of the posix advisory lock implementation ***************** -

2134 ******************************************************************************/ -

2135 -

2136 /****************************************************************************** -

2137 ****************************** No-op Locking ********************************** -

2138 ** -

2139 ** Of the various locking implementations available, this is by far the -

2140 ** simplest: locking is ignored. No attempt is made to lock the database -

2141 ** file for reading or writing. -

2142 ** -

2143 ** This locking mode is appropriate for use on read-only databases -

2144 ** (ex: databases that are burned into CD-ROM, for example.) It can -

2145 ** also be used if the application employs some external mechanism to -

2146 ** prevent simultaneous access of the same database by two or more -

2147 ** database connections. But there is a serious risk of database -

2148 ** corruption if this locking mode is used in situations where multiple -

2149 ** database connections are accessing the same database file at the same -

2150 ** time and one or more of those connections are writing. -

2151 */ -

2152 -

2153 static int nolockCheckReservedLock(sqlite3_file *NotUsed, int *pResOut){ -

2154 UNUSED_PARAMETER(NotUsed); -

2155 *pResOut = 0; -

2156

return SQLITE_OK;

executed 2 times by 1 test: return 0;

Executed by:

Self test (438)

2157 } -

2158 static int nolockLock(sqlite3_file *NotUsed, int NotUsed2){ -

2159 UNUSED_PARAMETER2(NotUsed, NotUsed2); -

2160

return SQLITE_OK;

executed 5 times by 1 test: return 0;

Executed by:

Self test (438)

2161 } -

2162 static int nolockUnlock(sqlite3_file *NotUsed, int NotUsed2){ -

2163 UNUSED_PARAMETER2(NotUsed, NotUsed2); -

2164

return SQLITE_OK;

executed 6 times by 1 test: return 0;

Executed by:

Self test (438)

2165 } -

2166 -

2167 /* -

2168 ** Close the file. -

2169 */ -

2170 static int nolockClose(sqlite3_file *id) { -

2171

return closeUnixFile(id);

executed 44637 times by 322 tests: return closeUnixFile(id);

Executed by:

Self test
Self test (10)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
Self test (124)
Self test (125)
...

44637

2172 } -

2173 -

2174 /******************* End of the no-op lock implementation ********************* -

2175 ******************************************************************************/ -

2176 -

2177 /****************************************************************************** -

2178 ************************* Begin dot-file Locking ****************************** -

2179 ** -

2180 ** The dotfile locking implementation uses the existence of separate lock -

2181 ** files (really a directory) to control access to the database. This works -

2182 ** on just about every filesystem imaginable. But there are serious downsides: -

2183 ** -

2184 ** (1) There is zero concurrency. A single reader blocks all other -

2185 ** connections from reading or writing the database. -

2186 ** -

2187 ** (2) An application crash or power loss can leave stale lock files -

2188 ** sitting around that need to be cleared manually. -

2189 ** -

2190 ** Nevertheless, a dotlock is an appropriate locking mode for use if no -

2191 ** other locking strategy is available. -

2192 ** -

2193 ** Dotfile locking works by creating a subdirectory in the same directory as -

2194 ** the database and with the same name but with a ".lock" extension added. -

2195 ** The existence of a lock directory implies an EXCLUSIVE lock. All other -

2196 ** lock types (SHARED, RESERVED, PENDING) are mapped into EXCLUSIVE. -

2197 */ -

2198 -

2199 /* -

2200 ** The file suffix added to the data base filename in order to create the -

2201 ** lock directory. -

2202 */ -

2203 #define DOTLOCK_SUFFIX ".lock" -

2204 -

2205 /* -

2206 ** This routine checks if there is a RESERVED lock held on the specified -

2207 ** file by this or any other process. If such a lock is held, set *pResOut -

2208 ** to a non-zero value otherwise *pResOut is set to zero. The return value -

2209 ** is set to SQLITE_OK unless an I/O error occurs during lock checking. -

2210 ** -

2211 ** In dotfile locking, either a lock exists or it does not. So in this -

2212 ** variation of CheckReservedLock(), *pResOut is set to true if any lock -

2213 ** is held on the file and false if the file is unlocked. -

2214 */ -

2215 static int dotlockCheckReservedLock(sqlite3_file *id, int *pResOut) { -

2216 int rc = SQLITE_OK; -

2217 int reserved = 0; -

2218 unixFile *pFile = (unixFile*)id; -

2219 -

2220

SimulateIOError( return SQLITE_IOERR_CHECKRESERVEDLOCK; );

never executed: return (10 | (14<<8));

sqlite3_io_error_persist	Description
TRUE	never evaluated
FALSE	never evaluated

sqlite3_io_error_hit	Description
TRUE	never evaluated
FALSE	never evaluated

sqlite3_io_err...pending-- == 1	Description
TRUE	never evaluated
FALSE	never evaluated

2221 -

2222 assert( pFile ); -

2223 reserved = osAccess((const char*)pFile->lockingContext, 0)==0; -

2224

OSTRACE(("TEST WR-LOCK %d %d %d (dotlock)\n", pFile->h, rc, reserved));

never executed: sqlite3DebugPrintf ("TEST WR-LOCK %d %d %d (dotlock)\n", pFile->h, rc, reserved);

sqlite3OSTrace	Description
TRUE	never evaluated
FALSE	never evaluated

2225 *pResOut = reserved; -

2226

return rc;

never executed: return rc;

2227 } -

2228 -

2229 /* -

2230 ** Lock the file with the lock specified by parameter eFileLock - one -

2231 ** of the following: -

2232 ** -

2233 ** (1) SHARED_LOCK -

2234 ** (2) RESERVED_LOCK -

2235 ** (3) PENDING_LOCK -

2236 ** (4) EXCLUSIVE_LOCK -

2237 ** -

2238 ** Sometimes when requesting one lock state, additional lock states -

2239 ** are inserted in between. The locking might fail on one of the later -

2240 ** transitions leaving the lock state different from what it started but -

2241 ** still short of its goal. The following chart shows the allowed -

2242 ** transitions and the inserted intermediate states: -

2243 ** -

2244 ** UNLOCKED -> SHARED -

2245 ** SHARED -> RESERVED -

2246 ** SHARED -> (PENDING) -> EXCLUSIVE -

2247 ** RESERVED -> (PENDING) -> EXCLUSIVE -

2248 ** PENDING -> EXCLUSIVE -

2249 ** -

2250 ** This routine will only increase a lock. Use the sqlite3OsUnlock() -

2251 ** routine to lower a locking level. -

2252 ** -

2253 ** With dotfile locking, we really only support state (4): EXCLUSIVE. -

2254 ** But we track the other locking levels internally. -

2255 */ -

2256 static int dotlockLock(sqlite3_file *id, int eFileLock) { -

2257 unixFile *pFile = (unixFile*)id; -

2258 char *zLockFile = (char *)pFile->lockingContext; -

2259 int rc = SQLITE_OK; -

2260 -

2261 -

2262 /* If we have any lock, then the lock file already exists. All we have -

2263 ** to do is adjust our internal record of the lock level. -

2264 */ -

2265

if( pFile->eFileLock > NO_LOCK ){

pFile->eFileLock > 0	Description
TRUE	evaluated 6 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 9 times by 1 test Evaluated by: Self test (438)

6-9

2266 pFile->eFileLock = eFileLock; -

2267 /* Always update the timestamp on the old file */ -

2268 #ifdef HAVE_UTIME -

2269 utime(zLockFile, NULL); -

2270 #else -

2271 utimes(zLockFile, NULL); -

2272 #endif -

2273

return SQLITE_OK;

executed 6 times by 1 test: return 0;

Executed by:

Self test (438)

2274 } -

2275 -

2276 /* grab an exclusive lock */ -

2277 rc = osMkdir(zLockFile, 0777); -

2278

if( rc<0 ){

rc<0	Description
TRUE	evaluated 1 time by 1 test Evaluated by: Self test (438)
FALSE	evaluated 8 times by 1 test Evaluated by: Self test (438)

1-8

2279 /* failed to open/create the lock directory */ -

2280 int tErrno = errno; -

2281

if( EEXIST == tErrno ){

17 == tErrno	Description
TRUE	evaluated 1 time by 1 test Evaluated by: Self test (438)
FALSE	never evaluated

0-1

2282 rc = SQLITE_BUSY; -

2283

} else {

executed 1 time by 1 test: end of block

Executed by:

Self test (438)

2284 rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_LOCK); -

2285

if( rc!=SQLITE_BUSY ){

rc!=5	Description
TRUE	never evaluated
FALSE	never evaluated

2286 storeLastErrno(pFile, tErrno); -

2287

}

never executed: end of block

2288

}

never executed: end of block

2289

return rc;

executed 1 time by 1 test: return rc;

Executed by:

Self test (438)

2290 } -

2291 -

2292 /* got it, set the type and return ok */ -

2293 pFile->eFileLock = eFileLock; -

2294

return rc;

executed 8 times by 1 test: return rc;

Executed by:

Self test (438)

2295 } -

2296 -

2297 /* -

2298 ** Lower the locking level on file descriptor pFile to eFileLock. eFileLock -

2299 ** must be either NO_LOCK or SHARED_LOCK. -

2300 ** -

2301 ** If the locking level of the file descriptor is already at or below -

2302 ** the requested locking level, this routine is a no-op. -

2303 ** -

2304 ** When the locking level reaches NO_LOCK, delete the lock file. -

2305 */ -

2306 static int dotlockUnlock(sqlite3_file *id, int eFileLock) { -

2307 unixFile *pFile = (unixFile*)id; -

2308 char *zLockFile = (char *)pFile->lockingContext; -

2309 int rc; -

2310 -

2311 assert( pFile ); -

2312

OSTRACE(("UNLOCK %d %d was %d pid=%d (dotlock)\n", pFile->h, eFileLock,

never executed: sqlite3DebugPrintf ("UNLOCK %d %d was %d pid=%d (dotlock)\n", pFile->h, eFileLock, pFile->eFileLock, (pid_t)getpid()) ;

sqlite3OSTrace	Description
TRUE	never evaluated
FALSE	evaluated 16 times by 1 test Evaluated by: Self test (438)

0-16

2313

pFile->eFileLock, osGetpid(0)));

never executed: sqlite3DebugPrintf ("UNLOCK %d %d was %d pid=%d (dotlock)\n", pFile->h, eFileLock, pFile->eFileLock, (pid_t)getpid()) ;

2314 assert( eFileLock<=SHARED_LOCK ); -

2315 -

2316 /* no-op if possible */ -

2317

if( pFile->eFileLock==eFileLock ){

pFile->eFileLock==eFileLock	Description
TRUE	evaluated 5 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 11 times by 1 test Evaluated by: Self test (438)

5-11

2318

return SQLITE_OK;

executed 5 times by 1 test: return 0;

Executed by:

Self test (438)

2319 } -

2320 -

2321 /* To downgrade to shared, simply update our internal notion of the -

2322 ** lock state. No need to mess with the file on disk. -

2323 */ -

2324

if( eFileLock==SHARED_LOCK ){

eFileLock==1	Description
TRUE	evaluated 3 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 8 times by 1 test Evaluated by: Self test (438)

3-8

2325 pFile->eFileLock = SHARED_LOCK; -

2326

return SQLITE_OK;

executed 3 times by 1 test: return 0;

Executed by:

Self test (438)

2327 } -

2328 -

2329 /* To fully unlock the database, delete the lock file */ -

2330 assert( eFileLock==NO_LOCK ); -

2331 rc = osRmdir(zLockFile); -

2332

if( rc<0 ){

rc<0	Description
TRUE	never evaluated
FALSE	evaluated 8 times by 1 test Evaluated by: Self test (438)

0-8

2333 int tErrno = errno; -

2334

if( tErrno==ENOENT ){

tErrno== 2	Description
TRUE	never evaluated
FALSE	never evaluated

2335 rc = SQLITE_OK; -

2336

}else{

never executed: end of block

2337 rc = SQLITE_IOERR_UNLOCK; -

2338 storeLastErrno(pFile, tErrno); -

2339

}

never executed: end of block

2340

return rc;

never executed: return rc;

2341 } -

2342 pFile->eFileLock = NO_LOCK; -

2343

return SQLITE_OK;

executed 8 times by 1 test: return 0;

Executed by:

Self test (438)

2344 } -

2345 -

2346 /* -

2347 ** Close a file. Make sure the lock has been released before closing. -

2348 */ -

2349 static int dotlockClose(sqlite3_file *id) { -

2350 unixFile *pFile = (unixFile*)id; -

2351 assert( id!=0 ); -

2352 dotlockUnlock(id, NO_LOCK); -

2353 sqlite3_free(pFile->lockingContext); -

2354

return closeUnixFile(id);

executed 2 times by 1 test: return closeUnixFile(id);

Executed by:

Self test (438)

2355 } -

2356 /****************** End of the dot-file lock implementation ******************* -

2357 ******************************************************************************/ -

2358 -

2359 /****************************************************************************** -

2360 ************************** Begin flock Locking ******************************** -

2361 ** -

2362 ** Use the flock() system call to do file locking. -

2363 ** -

2364 ** flock() locking is like dot-file locking in that the various -

2365 ** fine-grain locking levels supported by SQLite are collapsed into -

2366 ** a single exclusive lock. In other words, SHARED, RESERVED, and -

2367 ** PENDING locks are the same thing as an EXCLUSIVE lock. SQLite -

2368 ** still works when you do this, but concurrency is reduced since -

2369 ** only a single process can be reading the database at a time. -

2370 ** -

2371 ** Omit this section if SQLITE_ENABLE_LOCKING_STYLE is turned off -

2372 */ -

2373 #if SQLITE_ENABLE_LOCKING_STYLE -

2374 -

2375 /* -

2376 ** Retry flock() calls that fail with EINTR -

2377 */ -

2378 #ifdef EINTR -

2379 static int robust_flock(int fd, int op){ -

2380 int rc; -

2381 do{ rc = flock(fd,op); }while( rc<0 && errno==EINTR ); -

2382 return rc; -

2383 } -

2384 #else -

2385 # define robust_flock(a,b) flock(a,b) -

2386 #endif -

2387 -

2388 -

2389 /* -

2390 ** This routine checks if there is a RESERVED lock held on the specified -

2391 ** file by this or any other process. If such a lock is held, set *pResOut -

2392 ** to a non-zero value otherwise *pResOut is set to zero. The return value -

2393 ** is set to SQLITE_OK unless an I/O error occurs during lock checking. -

2394 */ -

2395 static int flockCheckReservedLock(sqlite3_file *id, int *pResOut){ -

2396 int rc = SQLITE_OK; -

2397 int reserved = 0; -

2398 unixFile *pFile = (unixFile*)id; -

2399 -

2400 SimulateIOError( return SQLITE_IOERR_CHECKRESERVEDLOCK; ); -

2401 -

2402 assert( pFile ); -

2403 -

2404 /* Check if a thread in this process holds such a lock */ -

2405 if( pFile->eFileLock>SHARED_LOCK ){ -

2406 reserved = 1; -

2407 } -

2408 -

2409 /* Otherwise see if some other process holds it. */ -

2410 if( !reserved ){ -

2411 /* attempt to get the lock */ -

2412 int lrc = robust_flock(pFile->h, LOCK_EX | LOCK_NB); -

2413 if( !lrc ){ -

2414 /* got the lock, unlock it */ -

2415 lrc = robust_flock(pFile->h, LOCK_UN); -

2416 if ( lrc ) { -

2417 int tErrno = errno; -

2418 /* unlock failed with an error */ -

2419 lrc = SQLITE_IOERR_UNLOCK; -

2420 storeLastErrno(pFile, tErrno); -

2421 rc = lrc; -

2422 } -

2423 } else { -

2424 int tErrno = errno; -

2425 reserved = 1; -

2426 /* someone else might have it reserved */ -

2427 lrc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_LOCK); -

2428 if( IS_LOCK_ERROR(lrc) ){ -

2429 storeLastErrno(pFile, tErrno); -

2430 rc = lrc; -

2431 } -

2432 } -

2433 } -

2434 OSTRACE(("TEST WR-LOCK %d %d %d (flock)\n", pFile->h, rc, reserved)); -

2435 -

2436 #ifdef SQLITE_IGNORE_FLOCK_LOCK_ERRORS -

2437 if( (rc & 0xff) == SQLITE_IOERR ){ -

2438 rc = SQLITE_OK; -

2439 reserved=1; -

2440 } -

2441 #endif /* SQLITE_IGNORE_FLOCK_LOCK_ERRORS */ -

2442 *pResOut = reserved; -

2443 return rc; -

2444 } -

2445 -

2446 /* -

2447 ** Lock the file with the lock specified by parameter eFileLock - one -

2448 ** of the following: -

2449 ** -

2450 ** (1) SHARED_LOCK -

2451 ** (2) RESERVED_LOCK -

2452 ** (3) PENDING_LOCK -

2453 ** (4) EXCLUSIVE_LOCK -

2454 ** -

2455 ** Sometimes when requesting one lock state, additional lock states -

2456 ** are inserted in between. The locking might fail on one of the later -

2457 ** transitions leaving the lock state different from what it started but -

2458 ** still short of its goal. The following chart shows the allowed -

2459 ** transitions and the inserted intermediate states: -

2460 ** -

2461 ** UNLOCKED -> SHARED -

2462 ** SHARED -> RESERVED -

2463 ** SHARED -> (PENDING) -> EXCLUSIVE -

2464 ** RESERVED -> (PENDING) -> EXCLUSIVE -

2465 ** PENDING -> EXCLUSIVE -

2466 ** -

2467 ** flock() only really support EXCLUSIVE locks. We track intermediate -

2468 ** lock states in the sqlite3_file structure, but all locks SHARED or -

2469 ** above are really EXCLUSIVE locks and exclude all other processes from -

2470 ** access the file. -

2471 ** -

2472 ** This routine will only increase a lock. Use the sqlite3OsUnlock() -

2473 ** routine to lower a locking level. -

2474 */ -

2475 static int flockLock(sqlite3_file *id, int eFileLock) { -

2476 int rc = SQLITE_OK; -

2477 unixFile *pFile = (unixFile*)id; -

2478 -

2479 assert( pFile ); -

2480 -

2481 /* if we already have a lock, it is exclusive. -

2482 ** Just adjust level and punt on outta here. */ -

2483 if (pFile->eFileLock > NO_LOCK) { -

2484 pFile->eFileLock = eFileLock; -

2485 return SQLITE_OK; -

2486 } -

2487 -

2488 /* grab an exclusive lock */ -

2489 -

2490 if (robust_flock(pFile->h, LOCK_EX | LOCK_NB)) { -

2491 int tErrno = errno; -

2492 /* didn't get, must be busy */ -

2493 rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_LOCK); -

2494 if( IS_LOCK_ERROR(rc) ){ -

2495 storeLastErrno(pFile, tErrno); -

2496 } -

2497 } else { -

2498 /* got it, set the type and return ok */ -

2499 pFile->eFileLock = eFileLock; -

2500 } -

2501 OSTRACE(("LOCK %d %s %s (flock)\n", pFile->h, azFileLock(eFileLock), -

2502 rc==SQLITE_OK ? "ok" : "failed")); -

2503 #ifdef SQLITE_IGNORE_FLOCK_LOCK_ERRORS -

2504 if( (rc & 0xff) == SQLITE_IOERR ){ -

2505 rc = SQLITE_BUSY; -

2506 } -

2507 #endif /* SQLITE_IGNORE_FLOCK_LOCK_ERRORS */ -

2508 return rc; -

2509 } -

2510 -

2511 -

2512 /* -

2513 ** Lower the locking level on file descriptor pFile to eFileLock. eFileLock -

2514 ** must be either NO_LOCK or SHARED_LOCK. -

2515 ** -

2516 ** If the locking level of the file descriptor is already at or below -

2517 ** the requested locking level, this routine is a no-op. -

2518 */ -

2519 static int flockUnlock(sqlite3_file *id, int eFileLock) { -

2520 unixFile *pFile = (unixFile*)id; -

2521 -

2522 assert( pFile ); -

2523 OSTRACE(("UNLOCK %d %d was %d pid=%d (flock)\n", pFile->h, eFileLock, -

2524 pFile->eFileLock, osGetpid(0))); -

2525 assert( eFileLock<=SHARED_LOCK ); -

2526 -

2527 /* no-op if possible */ -

2528 if( pFile->eFileLock==eFileLock ){ -

2529 return SQLITE_OK; -

2530 } -

2531 -

2532 /* shared can just be set because we always have an exclusive */ -

2533 if (eFileLock==SHARED_LOCK) { -

2534 pFile->eFileLock = eFileLock; -

2535 return SQLITE_OK; -

2536 } -

2537 -

2538 /* no, really, unlock. */ -

2539 if( robust_flock(pFile->h, LOCK_UN) ){ -

2540 #ifdef SQLITE_IGNORE_FLOCK_LOCK_ERRORS -

2541 return SQLITE_OK; -

2542 #endif /* SQLITE_IGNORE_FLOCK_LOCK_ERRORS */ -

2543 return SQLITE_IOERR_UNLOCK; -

2544 }else{ -

2545 pFile->eFileLock = NO_LOCK; -

2546 return SQLITE_OK; -

2547 } -

2548 } -

2549 -

2550 /* -

2551 ** Close a file. -

2552 */ -

2553 static int flockClose(sqlite3_file *id) { -

2554 assert( id!=0 ); -

2555 flockUnlock(id, NO_LOCK); -

2556 return closeUnixFile(id); -

2557 } -

2558 -

2559 #endif /* SQLITE_ENABLE_LOCKING_STYLE && !OS_VXWORK */ -

2560 -

2561 /******************* End of the flock lock implementation ********************* -

2562 ******************************************************************************/ -

2563 -

2564 /****************************************************************************** -

2565 ************************ Begin Named Semaphore Locking ************************ -

2566 ** -

2567 ** Named semaphore locking is only supported on VxWorks. -

2568 ** -

2569 ** Semaphore locking is like dot-lock and flock in that it really only -

2570 ** supports EXCLUSIVE locking. Only a single process can read or write -

2571 ** the database file at a time. This reduces potential concurrency, but -

2572 ** makes the lock implementation much easier. -

2573 */ -

2574 #if OS_VXWORKS -

2575 -

2576 /* -

2577 ** This routine checks if there is a RESERVED lock held on the specified -

2578 ** file by this or any other process. If such a lock is held, set *pResOut -

2579 ** to a non-zero value otherwise *pResOut is set to zero. The return value -

2580 ** is set to SQLITE_OK unless an I/O error occurs during lock checking. -

2581 */ -

2582 static int semXCheckReservedLock(sqlite3_file *id, int *pResOut) { -

2583 int rc = SQLITE_OK; -

2584 int reserved = 0; -

2585 unixFile *pFile = (unixFile*)id; -

2586 -

2587 SimulateIOError( return SQLITE_IOERR_CHECKRESERVEDLOCK; ); -

2588 -

2589 assert( pFile ); -

2590 -

2591 /* Check if a thread in this process holds such a lock */ -

2592 if( pFile->eFileLock>SHARED_LOCK ){ -

2593 reserved = 1; -

2594 } -

2595 -

2596 /* Otherwise see if some other process holds it. */ -

2597 if( !reserved ){ -

2598 sem_t *pSem = pFile->pInode->pSem; -

2599 -

2600 if( sem_trywait(pSem)==-1 ){ -

2601 int tErrno = errno; -

2602 if( EAGAIN != tErrno ){ -

2603 rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_CHECKRESERVEDLOCK); -

2604 storeLastErrno(pFile, tErrno); -

2605 } else { -

2606 /* someone else has the lock when we are in NO_LOCK */ -

2607 reserved = (pFile->eFileLock < SHARED_LOCK); -

2608 } -

2609 }else{ -

2610 /* we could have it if we want it */ -

2611 sem_post(pSem); -

2612 } -

2613 } -

2614 OSTRACE(("TEST WR-LOCK %d %d %d (sem)\n", pFile->h, rc, reserved)); -

2615 -

2616 *pResOut = reserved; -

2617 return rc; -

2618 } -

2619 -

2620 /* -

2621 ** Lock the file with the lock specified by parameter eFileLock - one -

2622 ** of the following: -

2623 ** -

2624 ** (1) SHARED_LOCK -

2625 ** (2) RESERVED_LOCK -

2626 ** (3) PENDING_LOCK -

2627 ** (4) EXCLUSIVE_LOCK -

2628 ** -

2629 ** Sometimes when requesting one lock state, additional lock states -

2630 ** are inserted in between. The locking might fail on one of the later -

2631 ** transitions leaving the lock state different from what it started but -

2632 ** still short of its goal. The following chart shows the allowed -

2633 ** transitions and the inserted intermediate states: -

2634 ** -

2635 ** UNLOCKED -> SHARED -

2636 ** SHARED -> RESERVED -

2637 ** SHARED -> (PENDING) -> EXCLUSIVE -

2638 ** RESERVED -> (PENDING) -> EXCLUSIVE -

2639 ** PENDING -> EXCLUSIVE -

2640 ** -

2641 ** Semaphore locks only really support EXCLUSIVE locks. We track intermediate -

2642 ** lock states in the sqlite3_file structure, but all locks SHARED or -

2643 ** above are really EXCLUSIVE locks and exclude all other processes from -

2644 ** access the file. -

2645 ** -

2646 ** This routine will only increase a lock. Use the sqlite3OsUnlock() -

2647 ** routine to lower a locking level. -

2648 */ -

2649 static int semXLock(sqlite3_file *id, int eFileLock) { -

2650 unixFile *pFile = (unixFile*)id; -

2651 sem_t *pSem = pFile->pInode->pSem; -

2652 int rc = SQLITE_OK; -

2653 -

2654 /* if we already have a lock, it is exclusive. -

2655 ** Just adjust level and punt on outta here. */ -

2656 if (pFile->eFileLock > NO_LOCK) { -

2657 pFile->eFileLock = eFileLock; -

2658 rc = SQLITE_OK; -

2659 goto sem_end_lock; -

2660 } -

2661 -

2662 /* lock semaphore now but bail out when already locked. */ -

2663 if( sem_trywait(pSem)==-1 ){ -

2664 rc = SQLITE_BUSY; -

2665 goto sem_end_lock; -

2666 } -

2667 -

2668 /* got it, set the type and return ok */ -

2669 pFile->eFileLock = eFileLock; -

2670 -

2671 sem_end_lock: -

2672 return rc; -

2673 } -

2674 -

2675 /* -

2676 ** Lower the locking level on file descriptor pFile to eFileLock. eFileLock -

2677 ** must be either NO_LOCK or SHARED_LOCK. -

2678 ** -

2679 ** If the locking level of the file descriptor is already at or below -

2680 ** the requested locking level, this routine is a no-op. -

2681 */ -

2682 static int semXUnlock(sqlite3_file *id, int eFileLock) { -

2683 unixFile *pFile = (unixFile*)id; -

2684 sem_t *pSem = pFile->pInode->pSem; -

2685 -

2686 assert( pFile ); -

2687 assert( pSem ); -

2688 OSTRACE(("UNLOCK %d %d was %d pid=%d (sem)\n", pFile->h, eFileLock, -

2689 pFile->eFileLock, osGetpid(0))); -

2690 assert( eFileLock<=SHARED_LOCK ); -

2691 -

2692 /* no-op if possible */ -

2693 if( pFile->eFileLock==eFileLock ){ -

2694 return SQLITE_OK; -

2695 } -

2696 -

2697 /* shared can just be set because we always have an exclusive */ -

2698 if (eFileLock==SHARED_LOCK) { -

2699 pFile->eFileLock = eFileLock; -

2700 return SQLITE_OK; -

2701 } -

2702 -

2703 /* no, really unlock. */ -

2704 if ( sem_post(pSem)==-1 ) { -

2705 int rc, tErrno = errno; -

2706 rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_UNLOCK); -

2707 if( IS_LOCK_ERROR(rc) ){ -

2708 storeLastErrno(pFile, tErrno); -

2709 } -

2710 return rc; -

2711 } -

2712 pFile->eFileLock = NO_LOCK; -

2713 return SQLITE_OK; -

2714 } -

2715 -

2716 /* -

2717 ** Close a file. -

2718 */ -

2719 static int semXClose(sqlite3_file *id) { -

2720 if( id ){ -

2721 unixFile *pFile = (unixFile*)id; -

2722 semXUnlock(id, NO_LOCK); -

2723 assert( pFile ); -

2724 assert( unixFileMutexNotheld(pFile) ); -

2725 unixEnterMutex(); -

2726 releaseInodeInfo(pFile); -

2727 unixLeaveMutex(); -

2728 closeUnixFile(id); -

2729 } -

2730 return SQLITE_OK; -

2731 } -

2732 -

2733 #endif /* OS_VXWORKS */ -

2734 /* -

2735 ** Named semaphore locking is only available on VxWorks. -

2736 ** -

2737 *************** End of the named semaphore lock implementation **************** -

2738 ******************************************************************************/ -

2739 -

2740 -

2741 /****************************************************************************** -

2742 *************************** Begin AFP Locking ********************************* -

2743 ** -

2744 ** AFP is the Apple Filing Protocol. AFP is a network filesystem found -

2745 ** on Apple Macintosh computers - both OS9 and OSX. -

2746 ** -

2747 ** Third-party implementations of AFP are available. But this code here -

2748 ** only works on OSX. -

2749 */ -

2750 -

2751 #if defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE -

2752 /* -

2753 ** The afpLockingContext structure contains all afp lock specific state -

2754 */ -

2755 typedef struct afpLockingContext afpLockingContext; -

2756 struct afpLockingContext { -

2757 int reserved; -

2758 const char *dbPath; /* Name of the open file */ -

2759 }; -

2760 -

2761 struct ByteRangeLockPB2 -

2762 { -

2763 unsigned long long offset; /* offset to first byte to lock */ -

2764 unsigned long long length; /* nbr of bytes to lock */ -

2765 unsigned long long retRangeStart; /* nbr of 1st byte locked if successful */ -

2766 unsigned char unLockFlag; /* 1 = unlock, 0 = lock */ -

2767 unsigned char startEndFlag; /* 1=rel to end of fork, 0=rel to start */ -

2768 int fd; /* file desc to assoc this lock with */ -

2769 }; -

2770 -

2771 #define afpfsByteRangeLock2FSCTL _IOWR('z', 23, struct ByteRangeLockPB2) -

2772 -

2773 /* -

2774 ** This is a utility for setting or clearing a bit-range lock on an -

2775 ** AFP filesystem. -

2776 ** -

2777 ** Return SQLITE_OK on success, SQLITE_BUSY on failure. -

2778 */ -

2779 static int afpSetLock( -

2780 const char *path, /* Name of the file to be locked or unlocked */ -

2781 unixFile *pFile, /* Open file descriptor on path */ -

2782 unsigned long long offset, /* First byte to be locked */ -

2783 unsigned long long length, /* Number of bytes to lock */ -

2784 int setLockFlag /* True to set lock. False to clear lock */ -

2785 ){ -

2786 struct ByteRangeLockPB2 pb; -

2787 int err; -

2788 -

2789 pb.unLockFlag = setLockFlag ? 0 : 1; -

2790 pb.startEndFlag = 0; -

2791 pb.offset = offset; -

2792 pb.length = length; -

2793 pb.fd = pFile->h; -

2794 -

2795 OSTRACE(("AFPSETLOCK [%s] for %d%s in range %llx:%llx\n", -

2796 (setLockFlag?"ON":"OFF"), pFile->h, (pb.fd==-1?"[testval-1]":""), -

2797 offset, length)); -

2798 err = fsctl(path, afpfsByteRangeLock2FSCTL, &pb, 0); -

2799 if ( err==-1 ) { -

2800 int rc; -

2801 int tErrno = errno; -

2802 OSTRACE(("AFPSETLOCK failed to fsctl() '%s' %d %s\n", -

2803 path, tErrno, strerror(tErrno))); -

2804 #ifdef SQLITE_IGNORE_AFP_LOCK_ERRORS -

2805 rc = SQLITE_BUSY; -

2806 #else -

2807 rc = sqliteErrorFromPosixError(tErrno, -

2808 setLockFlag ? SQLITE_IOERR_LOCK : SQLITE_IOERR_UNLOCK); -

2809 #endif /* SQLITE_IGNORE_AFP_LOCK_ERRORS */ -

2810 if( IS_LOCK_ERROR(rc) ){ -

2811 storeLastErrno(pFile, tErrno); -

2812 } -

2813 return rc; -

2814 } else { -

2815 return SQLITE_OK; -

2816 } -

2817 } -

2818 -

2819 /* -

2820 ** This routine checks if there is a RESERVED lock held on the specified -

2821 ** file by this or any other process. If such a lock is held, set *pResOut -

2822 ** to a non-zero value otherwise *pResOut is set to zero. The return value -

2823 ** is set to SQLITE_OK unless an I/O error occurs during lock checking. -

2824 */ -

2825 static int afpCheckReservedLock(sqlite3_file *id, int *pResOut){ -

2826 int rc = SQLITE_OK; -

2827 int reserved = 0; -

2828 unixFile *pFile = (unixFile*)id; -

2829 afpLockingContext *context; -

2830 -

2831 SimulateIOError( return SQLITE_IOERR_CHECKRESERVEDLOCK; ); -

2832 -

2833 assert( pFile ); -

2834 context = (afpLockingContext *) pFile->lockingContext; -

2835 if( context->reserved ){ -

2836 *pResOut = 1; -

2837 return SQLITE_OK; -

2838 } -

2839 sqlite3_mutex_enter(pFile->pInode->pLockMutex); -

2840 /* Check if a thread in this process holds such a lock */ -

2841 if( pFile->pInode->eFileLock>SHARED_LOCK ){ -

2842 reserved = 1; -

2843 } -

2844 -

2845 /* Otherwise see if some other process holds it. -

2846 */ -

2847 if( !reserved ){ -

2848 /* lock the RESERVED byte */ -

2849 int lrc = afpSetLock(context->dbPath, pFile, RESERVED_BYTE, 1,1); -

2850 if( SQLITE_OK==lrc ){ -

2851 /* if we succeeded in taking the reserved lock, unlock it to restore -

2852 ** the original state */ -

2853 lrc = afpSetLock(context->dbPath, pFile, RESERVED_BYTE, 1, 0); -

2854 } else { -

2855 /* if we failed to get the lock then someone else must have it */ -

2856 reserved = 1; -

2857 } -

2858 if( IS_LOCK_ERROR(lrc) ){ -

2859 rc=lrc; -

2860 } -

2861 } -

2862 -

2863 sqlite3_mutex_leave(pFile->pInode->pLockMutex); -

2864 OSTRACE(("TEST WR-LOCK %d %d %d (afp)\n", pFile->h, rc, reserved)); -

2865 -

2866 *pResOut = reserved; -

2867 return rc; -

2868 } -

2869 -

2870 /* -

2871 ** Lock the file with the lock specified by parameter eFileLock - one -

2872 ** of the following: -

2873 ** -

2874 ** (1) SHARED_LOCK -

2875 ** (2) RESERVED_LOCK -

2876 ** (3) PENDING_LOCK -

2877 ** (4) EXCLUSIVE_LOCK -

2878 ** -

2879 ** Sometimes when requesting one lock state, additional lock states -

2880 ** are inserted in between. The locking might fail on one of the later -

2881 ** transitions leaving the lock state different from what it started but -

2882 ** still short of its goal. The following chart shows the allowed -

2883 ** transitions and the inserted intermediate states: -

2884 ** -

2885 ** UNLOCKED -> SHARED -

2886 ** SHARED -> RESERVED -

2887 ** SHARED -> (PENDING) -> EXCLUSIVE -

2888 ** RESERVED -> (PENDING) -> EXCLUSIVE -

2889 ** PENDING -> EXCLUSIVE -

2890 ** -

2891 ** This routine will only increase a lock. Use the sqlite3OsUnlock() -

2892 ** routine to lower a locking level. -

2893 */ -

2894 static int afpLock(sqlite3_file *id, int eFileLock){ -

2895 int rc = SQLITE_OK; -

2896 unixFile *pFile = (unixFile*)id; -

2897 unixInodeInfo *pInode = pFile->pInode; -

2898 afpLockingContext *context = (afpLockingContext *) pFile->lockingContext; -

2899 -

2900 assert( pFile ); -

2901 OSTRACE(("LOCK %d %s was %s(%s,%d) pid=%d (afp)\n", pFile->h, -

2902 azFileLock(eFileLock), azFileLock(pFile->eFileLock), -

2903 azFileLock(pInode->eFileLock), pInode->nShared , osGetpid(0))); -

2904 -

2905 /* If there is already a lock of this type or more restrictive on the -

2906 ** unixFile, do nothing. Don't use the afp_end_lock: exit path, as -

2907 ** unixEnterMutex() hasn't been called yet. -

2908 */ -

2909 if( pFile->eFileLock>=eFileLock ){ -

2910 OSTRACE(("LOCK %d %s ok (already held) (afp)\n", pFile->h, -

2911 azFileLock(eFileLock))); -

2912 return SQLITE_OK; -

2913 } -

2914 -

2915 /* Make sure the locking sequence is correct -

2916 ** (1) We never move from unlocked to anything higher than shared lock. -

2917 ** (2) SQLite never explicitly requests a pendig lock. -

2918 ** (3) A shared lock is always held when a reserve lock is requested. -

2919 */ -

2920 assert( pFile->eFileLock!=NO_LOCK || eFileLock==SHARED_LOCK ); -

2921 assert( eFileLock!=PENDING_LOCK ); -

2922 assert( eFileLock!=RESERVED_LOCK || pFile->eFileLock==SHARED_LOCK ); -

2923 -

2924 /* This mutex is needed because pFile->pInode is shared across threads -

2925 */ -

2926 pInode = pFile->pInode; -

2927 sqlite3_mutex_enter(pInode->pLockMutex); -

2928 -

2929 /* If some thread using this PID has a lock via a different unixFile* -

2930 ** handle that precludes the requested lock, return BUSY. -

2931 */ -

2932 if( (pFile->eFileLock!=pInode->eFileLock && -

2933 (pInode->eFileLock>=PENDING_LOCK || eFileLock>SHARED_LOCK)) -

2934 ){ -

2935 rc = SQLITE_BUSY; -

2936 goto afp_end_lock; -

2937 } -

2938 -

2939 /* If a SHARED lock is requested, and some thread using this PID already -

2940 ** has a SHARED or RESERVED lock, then increment reference counts and -

2941 ** return SQLITE_OK. -

2942 */ -

2943 if( eFileLock==SHARED_LOCK && -

2944 (pInode->eFileLock==SHARED_LOCK || pInode->eFileLock==RESERVED_LOCK) ){ -

2945 assert( eFileLock==SHARED_LOCK ); -

2946 assert( pFile->eFileLock==0 ); -

2947 assert( pInode->nShared>0 ); -

2948 pFile->eFileLock = SHARED_LOCK; -

2949 pInode->nShared++; -

2950 pInode->nLock++; -

2951 goto afp_end_lock; -

2952 } -

2953 -

2954 /* A PENDING lock is needed before acquiring a SHARED lock and before -

2955 ** acquiring an EXCLUSIVE lock. For the SHARED lock, the PENDING will -

2956 ** be released. -

2957 */ -

2958 if( eFileLock==SHARED_LOCK -

2959 || (eFileLock==EXCLUSIVE_LOCK && pFile->eFileLock<PENDING_LOCK) -

2960 ){ -

2961 int failed; -

2962 failed = afpSetLock(context->dbPath, pFile, PENDING_BYTE, 1, 1); -

2963 if (failed) { -

2964 rc = failed; -

2965 goto afp_end_lock; -

2966 } -

2967 } -

2968 -

2969 /* If control gets to this point, then actually go ahead and make -

2970 ** operating system calls for the specified lock. -

2971 */ -

2972 if( eFileLock==SHARED_LOCK ){ -

2973 int lrc1, lrc2, lrc1Errno = 0; -

2974 long lk, mask; -

2975 -

2976 assert( pInode->nShared==0 ); -

2977 assert( pInode->eFileLock==0 ); -

2978 -

2979 mask = (sizeof(long)==8) ? LARGEST_INT64 : 0x7fffffff; -

2980 /* Now get the read-lock SHARED_LOCK */ -

2981 /* note that the quality of the randomness doesn't matter that much */ -

2982 lk = random(); -

2983 pInode->sharedByte = (lk & mask)%(SHARED_SIZE - 1); -

2984 lrc1 = afpSetLock(context->dbPath, pFile, -

2985 SHARED_FIRST+pInode->sharedByte, 1, 1); -

2986 if( IS_LOCK_ERROR(lrc1) ){ -

2987 lrc1Errno = pFile->lastErrno; -

2988 } -

2989 /* Drop the temporary PENDING lock */ -

2990 lrc2 = afpSetLock(context->dbPath, pFile, PENDING_BYTE, 1, 0); -

2991 -

2992 if( IS_LOCK_ERROR(lrc1) ) { -

2993 storeLastErrno(pFile, lrc1Errno); -

2994 rc = lrc1; -

2995 goto afp_end_lock; -

2996 } else if( IS_LOCK_ERROR(lrc2) ){ -

2997 rc = lrc2; -

2998 goto afp_end_lock; -

2999 } else if( lrc1 != SQLITE_OK ) { -

3000 rc = lrc1; -

3001 } else { -

3002 pFile->eFileLock = SHARED_LOCK; -

3003 pInode->nLock++; -

3004 pInode->nShared = 1; -

3005 } -

3006 }else if( eFileLock==EXCLUSIVE_LOCK && pInode->nShared>1 ){ -

3007 /* We are trying for an exclusive lock but another thread in this -

3008 ** same process is still holding a shared lock. */ -

3009 rc = SQLITE_BUSY; -

3010 }else{ -

3011 /* The request was for a RESERVED or EXCLUSIVE lock. It is -

3012 ** assumed that there is a SHARED or greater lock on the file -

3013 ** already. -

3014 */ -

3015 int failed = 0; -

3016 assert( 0!=pFile->eFileLock ); -

3017 if (eFileLock >= RESERVED_LOCK && pFile->eFileLock < RESERVED_LOCK) { -

3018 /* Acquire a RESERVED lock */ -

3019 failed = afpSetLock(context->dbPath, pFile, RESERVED_BYTE, 1,1); -

3020 if( !failed ){ -

3021 context->reserved = 1; -

3022 } -

3023 } -

3024 if (!failed && eFileLock == EXCLUSIVE_LOCK) { -

3025 /* Acquire an EXCLUSIVE lock */ -

3026 -

3027 /* Remove the shared lock before trying the range. we'll need to -

3028 ** reestablish the shared lock if we can't get the afpUnlock -

3029 */ -

3030 if( !(failed = afpSetLock(context->dbPath, pFile, SHARED_FIRST + -

3031 pInode->sharedByte, 1, 0)) ){ -

3032 int failed2 = SQLITE_OK; -

3033 /* now attemmpt to get the exclusive lock range */ -

3034 failed = afpSetLock(context->dbPath, pFile, SHARED_FIRST, -

3035 SHARED_SIZE, 1); -

3036 if( failed && (failed2 = afpSetLock(context->dbPath, pFile, -

3037 SHARED_FIRST + pInode->sharedByte, 1, 1)) ){ -

3038 /* Can't reestablish the shared lock. Sqlite can't deal, this is -

3039 ** a critical I/O error -

3040 */ -

3041 rc = ((failed & 0xff) == SQLITE_IOERR) ? failed2 : -

3042 SQLITE_IOERR_LOCK; -

3043 goto afp_end_lock; -

3044 } -

3045 }else{ -

3046 rc = failed; -

3047 } -

3048 } -

3049 if( failed ){ -

3050 rc = failed; -

3051 } -

3052 } -

3053 -

3054 if( rc==SQLITE_OK ){ -

3055 pFile->eFileLock = eFileLock; -

3056 pInode->eFileLock = eFileLock; -

3057 }else if( eFileLock==EXCLUSIVE_LOCK ){ -

3058 pFile->eFileLock = PENDING_LOCK; -

3059 pInode->eFileLock = PENDING_LOCK; -

3060 } -

3061 -

3062 afp_end_lock: -

3063 sqlite3_mutex_leave(pInode->pLockMutex); -

3064 OSTRACE(("LOCK %d %s %s (afp)\n", pFile->h, azFileLock(eFileLock), -

3065 rc==SQLITE_OK ? "ok" : "failed")); -

3066 return rc; -

3067 } -

3068 -

3069 /* -

3070 ** Lower the locking level on file descriptor pFile to eFileLock. eFileLock -

3071 ** must be either NO_LOCK or SHARED_LOCK. -

3072 ** -

3073 ** If the locking level of the file descriptor is already at or below -

3074 ** the requested locking level, this routine is a no-op. -

3075 */ -

3076 static int afpUnlock(sqlite3_file *id, int eFileLock) { -

3077 int rc = SQLITE_OK; -

3078 unixFile *pFile = (unixFile*)id; -

3079 unixInodeInfo *pInode; -

3080 afpLockingContext *context = (afpLockingContext *) pFile->lockingContext; -

3081 int skipShared = 0; -

3082 #ifdef SQLITE_TEST -

3083 int h = pFile->h; -

3084 #endif -

3085 -

3086 assert( pFile ); -

3087 OSTRACE(("UNLOCK %d %d was %d(%d,%d) pid=%d (afp)\n", pFile->h, eFileLock, -

3088 pFile->eFileLock, pFile->pInode->eFileLock, pFile->pInode->nShared, -

3089 osGetpid(0))); -

3090 -

3091 assert( eFileLock<=SHARED_LOCK ); -

3092 if( pFile->eFileLock<=eFileLock ){ -

3093 return SQLITE_OK; -

3094 } -

3095 pInode = pFile->pInode; -

3096 sqlite3_mutex_enter(pInode->pLockMutex); -

3097 assert( pInode->nShared!=0 ); -

3098 if( pFile->eFileLock>SHARED_LOCK ){ -

3099 assert( pInode->eFileLock==pFile->eFileLock ); -

3100 SimulateIOErrorBenign(1); -

3101 SimulateIOError( h=(-1) ) -

3102 SimulateIOErrorBenign(0); -

3103 -

3104 #ifdef SQLITE_DEBUG -

3105 /* When reducing a lock such that other processes can start -

3106 ** reading the database file again, make sure that the -

3107 ** transaction counter was updated if any part of the database -

3108 ** file changed. If the transaction counter is not updated, -

3109 ** other connections to the same file might not realize that -

3110 ** the file has changed and hence might not know to flush their -

3111 ** cache. The use of a stale cache can lead to database corruption. -

3112 */ -

3113 assert( pFile->inNormalWrite==0 -

3114 || pFile->dbUpdate==0 -

3115 || pFile->transCntrChng==1 ); -

3116 pFile->inNormalWrite = 0; -

3117 #endif -

3118 -

3119 if( pFile->eFileLock==EXCLUSIVE_LOCK ){ -

3120 rc = afpSetLock(context->dbPath, pFile, SHARED_FIRST, SHARED_SIZE, 0); -

3121 if( rc==SQLITE_OK && (eFileLock==SHARED_LOCK || pInode->nShared>1) ){ -

3122 /* only re-establish the shared lock if necessary */ -

3123 int sharedLockByte = SHARED_FIRST+pInode->sharedByte; -

3124 rc = afpSetLock(context->dbPath, pFile, sharedLockByte, 1, 1); -

3125 } else { -

3126 skipShared = 1; -

3127 } -

3128 } -

3129 if( rc==SQLITE_OK && pFile->eFileLock>=PENDING_LOCK ){ -

3130 rc = afpSetLock(context->dbPath, pFile, PENDING_BYTE, 1, 0); -

3131 } -

3132 if( rc==SQLITE_OK && pFile->eFileLock>=RESERVED_LOCK && context->reserved ){ -

3133 rc = afpSetLock(context->dbPath, pFile, RESERVED_BYTE, 1, 0); -

3134 if( !rc ){ -

3135 context->reserved = 0; -

3136 } -

3137 } -

3138 if( rc==SQLITE_OK && (eFileLock==SHARED_LOCK || pInode->nShared>1)){ -

3139 pInode->eFileLock = SHARED_LOCK; -

3140 } -

3141 } -

3142 if( rc==SQLITE_OK && eFileLock==NO_LOCK ){ -

3143 -

3144 /* Decrement the shared lock counter. Release the lock using an -

3145 ** OS call only when all threads in this same process have released -

3146 ** the lock. -

3147 */ -

3148 unsigned long long sharedLockByte = SHARED_FIRST+pInode->sharedByte; -

3149 pInode->nShared--; -

3150 if( pInode->nShared==0 ){ -

3151 SimulateIOErrorBenign(1); -

3152 SimulateIOError( h=(-1) ) -

3153 SimulateIOErrorBenign(0); -

3154 if( !skipShared ){ -

3155 rc = afpSetLock(context->dbPath, pFile, sharedLockByte, 1, 0); -

3156 } -

3157 if( !rc ){ -

3158 pInode->eFileLock = NO_LOCK; -

3159 pFile->eFileLock = NO_LOCK; -

3160 } -

3161 } -

3162 if( rc==SQLITE_OK ){ -

3163 pInode->nLock--; -

3164 assert( pInode->nLock>=0 ); -

3165 if( pInode->nLock==0 ) closePendingFds(pFile); -

3166 } -

3167 } -

3168 -

3169 sqlite3_mutex_leave(pInode->pLockMutex); -

3170 if( rc==SQLITE_OK ){ -

3171 pFile->eFileLock = eFileLock; -

3172 } -

3173 return rc; -

3174 } -

3175 -

3176 /* -

3177 ** Close a file & cleanup AFP specific locking context -

3178 */ -

3179 static int afpClose(sqlite3_file *id) { -

3180 int rc = SQLITE_OK; -

3181 unixFile *pFile = (unixFile*)id; -

3182 assert( id!=0 ); -

3183 afpUnlock(id, NO_LOCK); -

3184 assert( unixFileMutexNotheld(pFile) ); -

3185 unixEnterMutex(); -

3186 if( pFile->pInode ){ -

3187 unixInodeInfo *pInode = pFile->pInode; -

3188 sqlite3_mutex_enter(pInode->pLockMutex); -

3189 if( pInode->nLock ){ -

3190 /* If there are outstanding locks, do not actually close the file just -

3191 ** yet because that would clear those locks. Instead, add the file -

3192 ** descriptor to pInode->aPending. It will be automatically closed when -

3193 ** the last lock is cleared. -

3194 */ -

3195 setPendingFd(pFile); -

3196 } -

3197 sqlite3_mutex_leave(pInode->pLockMutex); -

3198 } -

3199 releaseInodeInfo(pFile); -

3200 sqlite3_free(pFile->lockingContext); -

3201 rc = closeUnixFile(id); -

3202 unixLeaveMutex(); -

3203 return rc; -

3204 } -

3205 -

3206 #endif /* defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE */ -

3207 /* -

3208 ** The code above is the AFP lock implementation. The code is specific -

3209 ** to MacOSX and does not work on other unix platforms. No alternative -

3210 ** is available. If you don't compile for a mac, then the "unix-afp" -

3211 ** VFS is not available. -

3212 ** -

3213 ********************* End of the AFP lock implementation ********************** -

3214 ******************************************************************************/ -

3215 -

3216 /****************************************************************************** -

3217 *************************** Begin NFS Locking ********************************/ -

3218 -

3219 #if defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE -

3220 /* -

3221 ** Lower the locking level on file descriptor pFile to eFileLock. eFileLock -

3222 ** must be either NO_LOCK or SHARED_LOCK. -

3223 ** -

3224 ** If the locking level of the file descriptor is already at or below -

3225 ** the requested locking level, this routine is a no-op. -

3226 */ -

3227 static int nfsUnlock(sqlite3_file *id, int eFileLock){ -

3228 return posixUnlock(id, eFileLock, 1); -

3229 } -

3230 -

3231 #endif /* defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE */ -

3232 /* -

3233 ** The code above is the NFS lock implementation. The code is specific -

3234 ** to MacOSX and does not work on other unix platforms. No alternative -

3235 ** is available. -

3236 ** -

3237 ********************* End of the NFS lock implementation ********************** -

3238 ******************************************************************************/ -

3239 -

3240 /****************************************************************************** -

3241 **************** Non-locking sqlite3_file methods ***************************** -

3242 ** -

3243 ** The next division contains implementations for all methods of the -

3244 ** sqlite3_file object other than the locking methods. The locking -

3245 ** methods were defined in divisions above (one locking method per -

3246 ** division). Those methods that are common to all locking modes -

3247 ** are gather together into this division. -

3248 */ -

3249 -

3250 /* -

3251 ** Seek to the offset passed as the second argument, then read cnt -

3252 ** bytes into pBuf. Return the number of bytes actually read. -

3253 ** -

3254 ** NB: If you define USE_PREAD or USE_PREAD64, then it might also -

3255 ** be necessary to define _XOPEN_SOURCE to be 500. This varies from -

3256 ** one system to another. Since SQLite does not define USE_PREAD -

3257 ** in any form by default, we will not attempt to define _XOPEN_SOURCE. -

3258 ** See tickets #2741 and #2681. -

3259 ** -

3260 ** To avoid stomping the errno value on a failed read the lastErrno value -

3261 ** is set before returning. -

3262 */ -

3263 static int seekAndRead(unixFile *id, sqlite3_int64 offset, void *pBuf, int cnt){ -

3264 int got; -

3265 int prior = 0; -

3266 #if (!defined(USE_PREAD) && !defined(USE_PREAD64)) -

3267 i64 newOffset; -

3268 #endif -

3269 TIMER_START; -

3270 assert( cnt==(cnt&0x1ffff) ); -

3271 assert( id->h>2 ); -

3272 do{ -

3273 #if defined(USE_PREAD) -

3274 got = osPread(id->h, pBuf, cnt, offset); -

3275 SimulateIOError( got = -1 ); -

3276 #elif defined(USE_PREAD64) -

3277 got = osPread64(id->h, pBuf, cnt, offset); -

3278

SimulateIOError( got = -1 );

executed 47 times by 1 test: end of block

Executed by:

Self test (438)

sqlite3_io_error_persist

Description

TRUE

evaluated 374 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 7338345 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

sqlite3_io_error_hit	Description
TRUE	never evaluated
FALSE	evaluated 374 times by 1 test Evaluated by: Self test (438)

sqlite3_io_err...pending-- == 1

Description

TRUE

evaluated 47 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 7338672 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

0-7338672

3279 #else -

3280 newOffset = lseek(id->h, offset, SEEK_SET); -

3281 SimulateIOError( newOffset = -1 ); -

3282 if( newOffset<0 ){ -

3283 storeLastErrno((unixFile*)id, errno); -

3284 return -1; -

3285 } -

3286 got = osRead(id->h, pBuf, cnt); -

3287 #endif -

3288

if( got==cnt ) break;

executed 7276515 times by 433 tests: break;

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

got==cnt

Description

TRUE

evaluated 7276515 times by 433 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

FALSE

evaluated 62204 times by 156 tests

Evaluated by:

Self test
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (24)
Self test (25)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (30)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (35)
Self test (353)
Self test (354)
Self test (355)
Self test (356)
Self test (357)
Self test (358)
Self test (359)
...

62204-7276515

3289

if( got<0 ){

got<0

Description

TRUE

evaluated 48 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 62156 times by 156 tests

Evaluated by:

Self test
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (24)
Self test (25)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (30)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (35)
Self test (353)
Self test (354)
Self test (355)
Self test (356)
Self test (357)
Self test (358)
Self test (359)
...

48-62156

3290

if( errno==EINTR ){ got = 1; continue; }

never executed: continue;

(*__errno_location ()) == 4	Description
TRUE	never evaluated
FALSE	evaluated 48 times by 1 test Evaluated by: Self test (438)

0-48

3291 prior = 0; -

3292 storeLastErrno((unixFile*)id, errno); -

3293

break;

executed 48 times by 1 test: break;

Executed by:

Self test (438)

3294

}else if( got>0 ){

got>0

Description

TRUE

evaluated 17 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 62139 times by 156 tests

Evaluated by:

Self test
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (24)
Self test (25)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (30)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (35)
Self test (353)
Self test (354)
Self test (355)
Self test (356)
Self test (357)
Self test (358)
Self test (359)
...

17-62139

3295 cnt -= got; -

3296 offset += got; -

3297 prior += got; -

3298 pBuf = (void*)(got + (char*)pBuf); -

3299

}

executed 17 times by 1 test: end of block

Executed by:

Self test (438)

3300

}while( got>0 );

executed 62156 times by 156 tests: end of block

Executed by:

Self test
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (24)
Self test (25)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (30)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (35)
Self test (353)
Self test (354)
Self test (355)
Self test (356)
Self test (357)
Self test (358)
Self test (359)
...

got>0

Description

TRUE

evaluated 17 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 62139 times by 156 tests

Evaluated by:

Self test
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (24)
Self test (25)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (30)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (35)
Self test (353)
Self test (354)
Self test (355)
Self test (356)
Self test (357)
Self test (358)
Self test (359)
...

17-62156

3301 TIMER_END; -

3302

OSTRACE(("READ %-3d %5d %7lld %llu\n",

never executed: sqlite3DebugPrintf ("READ %-3d %5d %7lld %llu\n", id->h, got+prior, offset-prior, ((sqlite_uint64)0)) ;

sqlite3OSTrace

Description

TRUE

never evaluated

FALSE

evaluated 7338702 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

0-7338702

3303

id->h, got+prior, offset-prior, TIMER_ELAPSED));

never executed: sqlite3DebugPrintf ("READ %-3d %5d %7lld %llu\n", id->h, got+prior, offset-prior, ((sqlite_uint64)0)) ;

3304

return got+prior;

executed 7338702 times by 438 tests: return got+prior;

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

7338702

3305 } -

3306 -

3307 /* -

3308 ** Read data from a file into a buffer. Return SQLITE_OK if all -

3309 ** bytes were read successfully and SQLITE_IOERR if anything goes -

3310 ** wrong. -

3311 */ -

3312 static int unixRead( -

3313 sqlite3_file *id, -

3314 void *pBuf, -

3315 int amt, -

3316 sqlite3_int64 offset -

3317 ){ -

3318 unixFile *pFile = (unixFile *)id; -

3319 int got; -

3320 assert( id ); -

3321 assert( offset>=0 ); -

3322 assert( amt>0 ); -

3323 -

3324 /* If this is a database file (not a journal, master-journal or temp -

3325 ** file), the bytes in the locking range should never be read or written. */ -

3326 #if 0 -

3327 assert( pFile->pPreallocatedUnused==0 -

3328 || offset>=PENDING_BYTE+512 -

3329 || offset+amt<=PENDING_BYTE -

3330 ); -

3331 #endif -

3332 -

3333 #if SQLITE_MAX_MMAP_SIZE>0 -

3334 /* Deal with as much of this read request as possible by transfering -

3335 ** data from the memory mapping using memcpy(). */ -

3336

if( offset<pFile->mmapSize ){

offset<pFile->mmapSize

Description

TRUE

evaluated 467 times by 2 tests

Evaluated by:

Self test (33)
Self test (438)

FALSE

evaluated 7338702 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

467-7338702

3337

if( offset+amt <= pFile->mmapSize ){

offset+amt <= pFile->mmapSize	Description
TRUE	evaluated 467 times by 2 tests Evaluated by: Self test (33) Self test (438)
FALSE	never evaluated

0-467

3338 memcpy(pBuf, &((u8 *)(pFile->pMapRegion))[offset], amt); -

3339

return SQLITE_OK;

executed 467 times by 2 tests: return 0;

Executed by:

Self test (33)
Self test (438)

467

3340 }else{ -

3341 int nCopy = pFile->mmapSize - offset; -

3342 memcpy(pBuf, &((u8 *)(pFile->pMapRegion))[offset], nCopy); -

3343 pBuf = &((u8 *)pBuf)[nCopy]; -

3344 amt -= nCopy; -

3345 offset += nCopy; -

3346

}

never executed: end of block

3347 } -

3348 #endif -

3349 -

3350 got = seekAndRead(pFile, offset, pBuf, amt); -

3351

if( got==amt ){

got==amt

Description

TRUE

evaluated 7276515 times by 433 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

FALSE

evaluated 62187 times by 156 tests

Evaluated by:

Self test
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (24)
Self test (25)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (30)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (35)
Self test (353)
Self test (354)
Self test (355)
Self test (356)
Self test (357)
Self test (358)
Self test (359)
...

62187-7276515

3352

return SQLITE_OK;

executed 7276515 times by 433 tests: return 0;

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

7276515

3353

}else if( got<0 ){

got<0

Description

TRUE

evaluated 48 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 62139 times by 156 tests

Evaluated by:

Self test
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (24)
Self test (25)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (30)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (35)
Self test (353)
Self test (354)
Self test (355)
Self test (356)
Self test (357)
Self test (358)
Self test (359)
...

48-62139

3354 /* lastErrno set by seekAndRead */ -

3355

return SQLITE_IOERR_READ;

executed 48 times by 1 test: return (10 | (1<<8));

Executed by:

Self test (438)

3356 }else{ -

3357 storeLastErrno(pFile, 0); /* not a system error */ -

3358 /* Unread parts of the buffer must be zero-filled */ -

3359 memset(&((char*)pBuf)[got], 0, amt-got); -

3360

return SQLITE_IOERR_SHORT_READ;

executed 62139 times by 156 tests: return (10 | (2<<8));

Executed by:

Self test
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (24)
Self test (25)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (30)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (35)
Self test (353)
Self test (354)
Self test (355)
Self test (356)
Self test (357)
Self test (358)
Self test (359)
...

62139

3361 } -

3362 } -

3363 -

3364 /* -

3365 ** Attempt to seek the file-descriptor passed as the first argument to -

3366 ** absolute offset iOff, then attempt to write nBuf bytes of data from -

3367 ** pBuf to it. If an error occurs, return -1 and set *piErrno. Otherwise, -

3368 ** return the actual number of bytes written (which may be less than -

3369 ** nBuf). -

3370 */ -

3371 static int seekAndWriteFd( -

3372 int fd, /* File descriptor to write to */ -

3373 i64 iOff, /* File offset to begin writing at */ -

3374 const void *pBuf, /* Copy data from this buffer to the file */ -

3375 int nBuf, /* Size of buffer pBuf in bytes */ -

3376 int *piErrno /* OUT: Error number if error occurs */ -

3377 ){ -

3378 int rc = 0; /* Value returned by system call */ -

3379 -

3380 assert( nBuf==(nBuf&0x1ffff) ); -

3381 assert( fd>2 ); -

3382 assert( piErrno!=0 ); -

3383 nBuf &= 0x1ffff; -

3384 TIMER_START; -

3385 -

3386 #if defined(USE_PREAD) -

3387 do{ rc = (int)osPwrite(fd, pBuf, nBuf, iOff); }while( rc<0 && errno==EINTR ); -

3388 #elif defined(USE_PREAD64) -

3389

do{ rc = (int)osPwrite64(fd, pBuf, nBuf, iOff);}while( rc<0 && errno==EINTR);

executed 3921977 times by 407 tests: end of block

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (104)
Self test (105)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
...

rc<0

Description

TRUE

never evaluated

FALSE

evaluated 3921968 times by 407 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (104)
Self test (105)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
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Self test (114)
Self test (115)
Self test (116)
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Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
...

(*__errno_location ()) == 4	Description
TRUE	never evaluated
FALSE	never evaluated

0-3921977

3390 #else -

3391 do{ -

3392 i64 iSeek = lseek(fd, iOff, SEEK_SET); -

3393 SimulateIOError( iSeek = -1 ); -

3394 if( iSeek<0 ){ -

3395 rc = -1; -

3396 break; -

3397 } -

3398 rc = osWrite(fd, pBuf, nBuf); -

3399 }while( rc<0 && errno==EINTR ); -

3400 #endif -

3401 -

3402 TIMER_END; -

3403

OSTRACE(("WRITE %-3d %5d %7lld %llu\n", fd, rc, iOff, TIMER_ELAPSED));

never executed: sqlite3DebugPrintf ("WRITE %-3d %5d %7lld %llu\n", fd, rc, iOff, ((sqlite_uint64)0));

sqlite3OSTrace

Description

TRUE

never evaluated

FALSE

evaluated 3921966 times by 407 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (104)
Self test (105)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
...

0-3921966

3404 -

3405

if( rc<0 ) *piErrno = errno;

never executed: *piErrno = (*__errno_location ()) ;

rc<0

Description

TRUE

never evaluated

FALSE

evaluated 3921974 times by 407 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (104)
Self test (105)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
...

0-3921974

3406

return rc;

executed 3921972 times by 407 tests: return rc;

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (104)
Self test (105)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
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Self test (121)
Self test (122)
Self test (123)
...

3921972

3407 } -

3408 -

3409 -

3410 /* -

3411 ** Seek to the offset in id->offset then read cnt bytes into pBuf. -

3412 ** Return the number of bytes actually read. Update the offset. -

3413 ** -

3414 ** To avoid stomping the errno value on a failed write the lastErrno value -

3415 ** is set before returning. -

3416 */ -

3417 static int seekAndWrite(unixFile *id, i64 offset, const void *pBuf, int cnt){ -

3418

return seekAndWriteFd(id->h, offset, pBuf, cnt, &id->lastErrno);

executed 3915217 times by 404 tests: return seekAndWriteFd(id->h, offset, pBuf, cnt, &id->lastErrno);

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (104)
Self test (105)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
...

3915217

3419 } -

3420 -

3421 -

3422 /* -

3423 ** Write data from a buffer into a file. Return SQLITE_OK on success -

3424 ** or some other error code on failure. -

3425 */ -

3426 static int unixWrite( -

3427 sqlite3_file *id, -

3428 const void *pBuf, -

3429 int amt, -

3430 sqlite3_int64 offset -

3431 ){ -

3432 unixFile *pFile = (unixFile*)id; -

3433 int wrote = 0; -

3434 assert( id ); -

3435 assert( amt>0 ); -

3436 -

3437 /* If this is a database file (not a journal, master-journal or temp -

3438 ** file), the bytes in the locking range should never be read or written. */ -

3439 #if 0 -

3440 assert( pFile->pPreallocatedUnused==0 -

3441 || offset>=PENDING_BYTE+512 -

3442 || offset+amt<=PENDING_BYTE -

3443 ); -

3444 #endif -

3445 -

3446 #ifdef SQLITE_DEBUG -

3447 /* If we are doing a normal write to a database file (as opposed to -

3448 ** doing a hot-journal rollback or a write to some file other than a -

3449 ** normal database file) then record the fact that the database -

3450 ** has changed. If the transaction counter is modified, record that -

3451 ** fact too. -

3452 */ -

3453 if( pFile->inNormalWrite ){ -

3454 pFile->dbUpdate = 1; /* The database has been modified */ -

3455 if( offset<=24 && offset+amt>=27 ){ -

3456 int rc; -

3457 char oldCntr[4]; -

3458 SimulateIOErrorBenign(1); -

3459 rc = seekAndRead(pFile, 24, oldCntr, 4); -

3460 SimulateIOErrorBenign(0); -

3461 if( rc!=4 || memcmp(oldCntr, &((char*)pBuf)[24-offset], 4)!=0 ){ -

3462 pFile->transCntrChng = 1; /* The transaction counter has changed */ -

3463 } -

3464 } -

3465 } -

3466 #endif -

3467 -

3468 #if defined(SQLITE_MMAP_READWRITE) && SQLITE_MAX_MMAP_SIZE>0 -

3469 /* Deal with as much of this write request as possible by transfering -

3470 ** data from the memory mapping using memcpy(). */ -

3471 if( offset<pFile->mmapSize ){ -

3472 if( offset+amt <= pFile->mmapSize ){ -

3473 memcpy(&((u8 *)(pFile->pMapRegion))[offset], pBuf, amt); -

3474 return SQLITE_OK; -

3475 }else{ -

3476 int nCopy = pFile->mmapSize - offset; -

3477 memcpy(&((u8 *)(pFile->pMapRegion))[offset], pBuf, nCopy); -

3478 pBuf = &((u8 *)pBuf)[nCopy]; -

3479 amt -= nCopy; -

3480 offset += nCopy; -

3481 } -

3482 } -

3483 #endif -

3484 -

3485

while( (wrote = seekAndWrite(pFile, offset, pBuf, amt))<amt && wrote>0 ){

(wrote = seekA...Buf, amt))<amt

Description

TRUE

never evaluated

FALSE

evaluated 3881847 times by 404 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (104)
Self test (105)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
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Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
...

wrote>0	Description
TRUE	never evaluated
FALSE	never evaluated

0-3881847

3486 amt -= wrote; -

3487 offset += wrote; -

3488 pBuf = &((char*)pBuf)[wrote]; -

3489

}

never executed: end of block

3490

SimulateIOError(( wrote=(-1), amt=1 ));

executed 75 times by 1 test: end of block

Executed by:

Self test (438)

sqlite3_io_error_persist

Description

TRUE

evaluated 704 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 3881141 times by 404 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (104)
Self test (105)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
...

sqlite3_io_error_hit	Description
TRUE	never evaluated
FALSE	evaluated 704 times by 1 test Evaluated by: Self test (438)

sqlite3_io_err...pending-- == 1

Description

TRUE

evaluated 75 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 3881770 times by 404 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (104)
Self test (105)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
...

0-3881770

3491

SimulateDiskfullError(( wrote=0, amt=1 ));

executed 459 times by 1 test: end of block

Executed by:

Self test (438)

executed 68076 times by 1 test: end of block

Executed by:

Self test (438)

sqlite3_diskfull_pending

Description

TRUE

evaluated 68535 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 3813306 times by 404 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (104)
Self test (105)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
...

sqlite3_diskfull_pending == 1	Description
TRUE	evaluated 459 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 68076 times by 1 test Evaluated by: Self test (438)

459-3813306

3492 -

3493

if( amt>wrote ){

amt>wrote

Description

TRUE

evaluated 534 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 3881307 times by 404 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (104)
Self test (105)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
...

534-3881307

3494

if( wrote<0 && pFile->lastErrno!=ENOSPC ){

wrote<0	Description
TRUE	evaluated 75 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 459 times by 1 test Evaluated by: Self test (438)

pFile->lastErrno!= 28	Description
TRUE	evaluated 75 times by 1 test Evaluated by: Self test (438)
FALSE	never evaluated

0-459

3495 /* lastErrno set by seekAndWrite */ -

3496

return SQLITE_IOERR_WRITE;

executed 75 times by 1 test: return (10 | (3<<8));

Executed by:

Self test (438)

3497 }else{ -

3498 storeLastErrno(pFile, 0); /* not a system error */ -

3499

return SQLITE_FULL;

executed 459 times by 1 test: return 13;

Executed by:

Self test (438)

459

3500 } -

3501 } -

3502 -

3503

return SQLITE_OK;

executed 3881307 times by 404 tests: return 0;

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (104)
Self test (105)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
...

3881307

3504 } -

3505 -

3506 #ifdef SQLITE_TEST -

3507 /* -

3508 ** Count the number of fullsyncs and normal syncs. This is used to test -

3509 ** that syncs and fullsyncs are occurring at the right times. -

3510 */ -

3511 int sqlite3_sync_count = 0; -

3512 int sqlite3_fullsync_count = 0; -

3513 #endif -

3514 -

3515 /* -

3516 ** We do not trust systems to provide a working fdatasync(). Some do. -

3517 ** Others do no. To be safe, we will stick with the (slightly slower) -

3518 ** fsync(). If you know that your system does support fdatasync() correctly, -

3519 ** then simply compile with -Dfdatasync=fdatasync or -DHAVE_FDATASYNC -

3520 */ -

3521 #if !defined(fdatasync) && !HAVE_FDATASYNC -

3522 # define fdatasync fsync -

3523 #endif -

3524 -

3525 /* -

3526 ** Define HAVE_FULLFSYNC to 0 or 1 depending on whether or not -

3527 ** the F_FULLFSYNC macro is defined. F_FULLFSYNC is currently -

3528 ** only available on Mac OS X. But that could change. -

3529 */ -

3530 #ifdef F_FULLFSYNC -

3531 # define HAVE_FULLFSYNC 1 -

3532 #else -

3533 # define HAVE_FULLFSYNC 0 -

3534 #endif -

3535 -

3536 -

3537 /* -

3538 ** The fsync() system call does not work as advertised on many -

3539 ** unix systems. The following procedure is an attempt to make -

3540 ** it work better. -

3541 ** -

3542 ** The SQLITE_NO_SYNC macro disables all fsync()s. This is useful -

3543 ** for testing when we want to run through the test suite quickly. -

3544 ** You are strongly advised *not* to deploy with SQLITE_NO_SYNC -

3545 ** enabled, however, since with SQLITE_NO_SYNC enabled, an OS crash -

3546 ** or power failure will likely corrupt the database file. -

3547 ** -

3548 ** SQLite sets the dataOnly flag if the size of the file is unchanged. -

3549 ** The idea behind dataOnly is that it should only write the file content -

3550 ** to disk, not the inode. We only set dataOnly if the file size is -

3551 ** unchanged since the file size is part of the inode. However, -

3552 ** Ted Ts'o tells us that fdatasync() will also write the inode if the -

3553 ** file size has changed. The only real difference between fdatasync() -

3554 ** and fsync(), Ted tells us, is that fdatasync() will not flush the -

3555 ** inode if the mtime or owner or other inode attributes have changed. -

3556 ** We only care about the file size, not the other file attributes, so -

3557 ** as far as SQLite is concerned, an fdatasync() is always adequate. -

3558 ** So, we always use fdatasync() if it is available, regardless of -

3559 ** the value of the dataOnly flag. -

3560 */ -

3561 static int full_fsync(int fd, int fullSync, int dataOnly){ -

3562 int rc; -

3563 -

3564 /* The following "ifdef/elif/else/" block has the same structure as -

3565 ** the one below. It is replicated here solely to avoid cluttering -

3566 ** up the real code with the UNUSED_PARAMETER() macros. -

3567 */ -

3568 #ifdef SQLITE_NO_SYNC -

3569 UNUSED_PARAMETER(fd); -

3570 UNUSED_PARAMETER(fullSync); -

3571 UNUSED_PARAMETER(dataOnly); -

3572 #elif HAVE_FULLFSYNC -

3573 UNUSED_PARAMETER(dataOnly); -

3574 #else -

3575 UNUSED_PARAMETER(fullSync); -

3576 UNUSED_PARAMETER(dataOnly); -

3577 #endif -

3578 -

3579 /* Record the number of times that we do a normal fsync() and -

3580 ** FULLSYNC. This is used during testing to verify that this procedure -

3581 ** gets called with the correct arguments. -

3582 */ -

3583 #ifdef SQLITE_TEST -

3584

if( fullSync ) sqlite3_fullsync_count++;

executed 5570 times by 1 test: sqlite3_fullsync_count++;

Executed by:

Self test (438)

fullSync

Description

TRUE

evaluated 5570 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 249754 times by 125 tests

Evaluated by:

Self test
Self test (101)
Self test (104)
Self test (105)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (353)
Self test (354)
Self test (355)
Self test (356)
Self test (357)
Self test (358)
Self test (359)
Self test (360)
Self test (361)
Self test (362)
Self test (363)
Self test (364)
...

5570-249754

3585 sqlite3_sync_count++; -

3586 #endif -

3587 -

3588 /* If we compiled with the SQLITE_NO_SYNC flag, then syncing is a -

3589 ** no-op. But go ahead and call fstat() to validate the file -

3590 ** descriptor as we need a method to provoke a failure during -

3591 ** coverate testing. -

3592 */ -

3593 #ifdef SQLITE_NO_SYNC -

3594 { -

3595 struct stat buf; -

3596 rc = osFstat(fd, &buf); -

3597 } -

3598 #elif HAVE_FULLFSYNC -

3599 if( fullSync ){ -

3600 rc = osFcntl(fd, F_FULLFSYNC, 0); -

3601 }else{ -

3602 rc = 1; -

3603 } -

3604 /* If the FULLFSYNC failed, fall back to attempting an fsync(). -

3605 ** It shouldn't be possible for fullfsync to fail on the local -

3606 ** file system (on OSX), so failure indicates that FULLFSYNC -

3607 ** isn't supported for this file system. So, attempt an fsync -

3608 ** and (for now) ignore the overhead of a superfluous fcntl call. -

3609 ** It'd be better to detect fullfsync support once and avoid -

3610 ** the fcntl call every time sync is called. -

3611 */ -

3612 if( rc ) rc = fsync(fd); -

3613 -

3614 #elif defined(__APPLE__) -

3615 /* fdatasync() on HFS+ doesn't yet flush the file size if it changed correctly -

3616 ** so currently we default to the macro that redefines fdatasync to fsync -

3617 */ -

3618 rc = fsync(fd); -

3619 #else -

3620 rc = fdatasync(fd); -

3621 #if OS_VXWORKS -

3622 if( rc==-1 && errno==ENOTSUP ){ -

3623 rc = fsync(fd); -

3624 } -

3625 #endif /* OS_VXWORKS */ -

3626 #endif /* ifdef SQLITE_NO_SYNC elif HAVE_FULLFSYNC */ -

3627 -

3628

if( OS_VXWORKS && rc!= -1 ){

dead code: rc!= -1

dead code: { rc = 0; }

3629

rc = 0;

dead code: { rc = 0; }

3630

}

dead code: { rc = 0; }

3631

return rc;

executed 255324 times by 125 tests: return rc;

Executed by:

Self test
Self test (101)
Self test (104)
Self test (105)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (353)
Self test (354)
Self test (355)
Self test (356)
Self test (357)
Self test (358)
Self test (359)
Self test (360)
Self test (361)
Self test (362)
Self test (363)
Self test (364)
...

255324

3632 } -

3633 -

3634 /* -

3635 ** Open a file descriptor to the directory containing file zFilename. -

3636 ** If successful, *pFd is set to the opened file descriptor and -

3637 ** SQLITE_OK is returned. If an error occurs, either SQLITE_NOMEM -

3638 ** or SQLITE_CANTOPEN is returned and *pFd is set to an undefined -

3639 ** value. -

3640 ** -

3641 ** The directory file descriptor is used for only one thing - to -

3642 ** fsync() a directory to make sure file creation and deletion events -

3643 ** are flushed to disk. Such fsyncs are not needed on newer -

3644 ** journaling filesystems, but are required on older filesystems. -

3645 ** -

3646 ** This routine can be overridden using the xSetSysCall interface. -

3647 ** The ability to override this routine was added in support of the -

3648 ** chromium sandbox. Opening a directory is a security risk (we are -

3649 ** told) so making it overrideable allows the chromium sandbox to -

3650 ** replace this routine with a harmless no-op. To make this routine -

3651 ** a no-op, replace it with a stub that returns SQLITE_OK but leaves -

3652 ** *pFd set to a negative number. -

3653 ** -

3654 ** If SQLITE_OK is returned, the caller is responsible for closing -

3655 ** the file descriptor *pFd using close(). -

3656 */ -

3657 static int openDirectory(const char *zFilename, int *pFd){ -

3658 int ii; -

3659 int fd = -1; -

3660 char zDirname[MAX_PATHNAME+1]; -

3661 -

3662 sqlite3_snprintf(MAX_PATHNAME, zDirname, "%s", zFilename); -

3663

for(ii=(int)strlen(zDirname); ii>0 && zDirname[ii]!='/'; ii--);

executed 634037 times by 125 tests: ;

Executed by:

Self test
Self test (101)
Self test (104)
Self test (105)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (353)
Self test (354)
Self test (355)
Self test (356)
Self test (357)
Self test (358)
Self test (359)
Self test (360)
Self test (361)
Self test (362)
Self test (363)
Self test (364)
...

ii>0

Description

TRUE

evaluated 673049 times by 125 tests

Evaluated by:

Self test
Self test (101)
Self test (104)
Self test (105)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (353)
Self test (354)
Self test (355)
Self test (356)
Self test (357)
Self test (358)
Self test (359)
Self test (360)
Self test (361)
Self test (362)
Self test (363)
Self test (364)
...

FALSE

never evaluated

zDirname[ii]!='/'

Description

TRUE

evaluated 634037 times by 125 tests

Evaluated by:

Self test
Self test (101)
Self test (104)
Self test (105)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (353)
Self test (354)
Self test (355)
Self test (356)
Self test (357)
Self test (358)
Self test (359)
Self test (360)
Self test (361)
Self test (362)
Self test (363)
Self test (364)
...

FALSE

evaluated 39012 times by 125 tests

Evaluated by:

Self test
Self test (101)
Self test (104)
Self test (105)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (353)
Self test (354)
Self test (355)
Self test (356)
Self test (357)
Self test (358)
Self test (359)
Self test (360)
Self test (361)
Self test (362)
Self test (363)
Self test (364)
...

0-673049

3664

if( ii>0 ){

ii>0

Description

TRUE

evaluated 39012 times by 125 tests

Evaluated by:

Self test
Self test (101)
Self test (104)
Self test (105)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (353)
Self test (354)
Self test (355)
Self test (356)
Self test (357)
Self test (358)
Self test (359)
Self test (360)
Self test (361)
Self test (362)
Self test (363)
Self test (364)
...

FALSE

never evaluated

0-39012

3665 zDirname[ii] = '\0'; -

3666

}else{

executed 39012 times by 125 tests: end of block

Executed by:

Self test
Self test (101)
Self test (104)
Self test (105)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (353)
Self test (354)
Self test (355)
Self test (356)
Self test (357)
Self test (358)
Self test (359)
Self test (360)
Self test (361)
Self test (362)
Self test (363)
Self test (364)
...

39012

3667

if( zDirname[0]!='/' ) zDirname[0] = '.';

never executed: zDirname[0] = '.';

zDirname[0]!='/'	Description
TRUE	never evaluated
FALSE	never evaluated

3668 zDirname[1] = 0; -

3669

}

never executed: end of block

3670 fd = robust_open(zDirname, O_RDONLY|O_BINARY, 0); -

3671

if( fd>=0 ){

fd>=0

Description

TRUE

evaluated 39012 times by 125 tests

Evaluated by:

Self test
Self test (101)
Self test (104)
Self test (105)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (353)
Self test (354)
Self test (355)
Self test (356)
Self test (357)
Self test (358)
Self test (359)
Self test (360)
Self test (361)
Self test (362)
Self test (363)
Self test (364)
...

FALSE

never evaluated

0-39012

3672

OSTRACE(("OPENDIR %-3d %s\n", fd, zDirname));

never executed: sqlite3DebugPrintf ("OPENDIR %-3d %s\n", fd, zDirname);

sqlite3OSTrace

Description

TRUE

never evaluated

FALSE

evaluated 39012 times by 125 tests

Evaluated by:

Self test
Self test (101)
Self test (104)
Self test (105)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (353)
Self test (354)
Self test (355)
Self test (356)
Self test (357)
Self test (358)
Self test (359)
Self test (360)
Self test (361)
Self test (362)
Self test (363)
Self test (364)
...

0-39012

3673

}

executed 39012 times by 125 tests: end of block

Executed by:

Self test
Self test (101)
Self test (104)
Self test (105)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (353)
Self test (354)
Self test (355)
Self test (356)
Self test (357)
Self test (358)
Self test (359)
Self test (360)
Self test (361)
Self test (362)
Self test (363)
Self test (364)
...

39012

3674 *pFd = fd; -

3675

if( fd>=0 ) return SQLITE_OK;

executed 39012 times by 125 tests: return 0;

Executed by:

Self test
Self test (101)
Self test (104)
Self test (105)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (353)
Self test (354)
Self test (355)
Self test (356)
Self test (357)
Self test (358)
Self test (359)
Self test (360)
Self test (361)
Self test (362)
Self test (363)
Self test (364)
...

fd>=0

Description

TRUE

evaluated 39012 times by 125 tests

Evaluated by:

Self test
Self test (101)
Self test (104)
Self test (105)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (353)
Self test (354)
Self test (355)
Self test (356)
Self test (357)
Self test (358)
Self test (359)
Self test (360)
Self test (361)
Self test (362)
Self test (363)
Self test (364)
...

FALSE

never evaluated

0-39012

3676

return unixLogError(SQLITE_CANTOPEN_BKPT, "openDirectory", zDirname);

never executed: return unixLogErrorAtLine(sqlite3CantopenError(3676),"openDirectory",zDirname,3676);

3677 } -

3678 -

3679 /* -

3680 ** Make sure all writes to a particular file are committed to disk. -

3681 ** -

3682 ** If dataOnly==0 then both the file itself and its metadata (file -

3683 ** size, access time, etc) are synced. If dataOnly!=0 then only the -

3684 ** file data is synced. -

3685 ** -

3686 ** Under Unix, also make sure that the directory entry for the file -

3687 ** has been created by fsync-ing the directory that contains the file. -

3688 ** If we do not do this and we encounter a power failure, the directory -

3689 ** entry for the journal might not exist after we reboot. The next -

3690 ** SQLite to access the file will not know that the journal exists (because -

3691 ** the directory entry for the journal was never created) and the transaction -

3692 ** will not roll back - possibly leading to database corruption. -

3693 */ -

3694 static int unixSync(sqlite3_file *id, int flags){ -

3695 int rc; -

3696 unixFile *pFile = (unixFile*)id; -

3697 -

3698 int isDataOnly = (flags&SQLITE_SYNC_DATAONLY); -

3699 int isFullsync = (flags&0x0F)==SQLITE_SYNC_FULL; -

3700 -

3701 /* Check that one of SQLITE_SYNC_NORMAL or FULL was passed */ -

3702 assert((flags&0x0F)==SQLITE_SYNC_NORMAL -

3703 || (flags&0x0F)==SQLITE_SYNC_FULL -

3704 ); -

3705 -

3706 /* Unix cannot, but some systems may return SQLITE_FULL from here. This -

3707 ** line is to test that doing so does not cause any problems. -

3708 */ -

3709

SimulateDiskfullError( return SQLITE_FULL );

executed 3 times by 1 test: return 13;

Executed by:

Self test (438)

executed 189 times by 1 test: end of block

Executed by:

Self test (438)

sqlite3_diskfull_pending

Description

TRUE

evaluated 192 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 216123 times by 125 tests

Evaluated by:

Self test
Self test (101)
Self test (104)
Self test (105)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (353)
Self test (354)
Self test (355)
Self test (356)
Self test (357)
Self test (358)
Self test (359)
Self test (360)
Self test (361)
Self test (362)
Self test (363)
Self test (364)
...

sqlite3_diskfull_pending == 1	Description
TRUE	evaluated 3 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 189 times by 1 test Evaluated by: Self test (438)

3-216123

3710 -

3711 assert( pFile ); -

3712

OSTRACE(("SYNC %-3d\n", pFile->h));

never executed: sqlite3DebugPrintf ("SYNC %-3d\n", pFile->h);

sqlite3OSTrace

Description

TRUE

never evaluated

FALSE

evaluated 216312 times by 125 tests

Evaluated by:

Self test
Self test (101)
Self test (104)
Self test (105)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (353)
Self test (354)
Self test (355)
Self test (356)
Self test (357)
Self test (358)
Self test (359)
Self test (360)
Self test (361)
Self test (362)
Self test (363)
Self test (364)
...

0-216312

3713 rc = full_fsync(pFile->h, isFullsync, isDataOnly); -

3714

SimulateIOError( rc=1 );

executed 16 times by 1 test: end of block

Executed by:

Self test (438)

sqlite3_io_error_persist

Description

TRUE

evaluated 84 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 216228 times by 125 tests

Evaluated by:

Self test
Self test (101)
Self test (104)
Self test (105)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (353)
Self test (354)
Self test (355)
Self test (356)
Self test (357)
Self test (358)
Self test (359)
Self test (360)
Self test (361)
Self test (362)
Self test (363)
Self test (364)
...

sqlite3_io_error_hit	Description
TRUE	never evaluated
FALSE	evaluated 84 times by 1 test Evaluated by: Self test (438)

sqlite3_io_err...pending-- == 1

Description

TRUE

evaluated 16 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 216296 times by 125 tests

Evaluated by:

Self test
Self test (101)
Self test (104)
Self test (105)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (353)
Self test (354)
Self test (355)
Self test (356)
Self test (357)
Self test (358)
Self test (359)
Self test (360)
Self test (361)
Self test (362)
Self test (363)
Self test (364)
...

0-216296

3715

if( rc ){

Description

TRUE

evaluated 16 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 216296 times by 125 tests

Evaluated by:

Self test
Self test (101)
Self test (104)
Self test (105)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (353)
Self test (354)
Self test (355)
Self test (356)
Self test (357)
Self test (358)
Self test (359)
Self test (360)
Self test (361)
Self test (362)
Self test (363)
Self test (364)
...

16-216296

3716 storeLastErrno(pFile, errno); -

3717

return unixLogError(SQLITE_IOERR_FSYNC, "full_fsync", pFile->zPath);

executed 16 times by 1 test: return unixLogErrorAtLine((10 | (4<<8)),"full_fsync",pFile->zPath,3717);

Executed by:

Self test (438)

3718 } -

3719 -

3720 /* Also fsync the directory containing the file if the DIRSYNC flag -

3721 ** is set. This is a one-time occurrence. Many systems (examples: AIX) -

3722 ** are unable to fsync a directory, so ignore errors on the fsync. -

3723 */ -

3724

if( pFile->ctrlFlags & UNIXFILE_DIRSYNC ){

pFile->ctrlFlags & 0x08

Description

TRUE

evaluated 38952 times by 125 tests

Evaluated by:

Self test
Self test (101)
Self test (104)
Self test (105)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (353)
Self test (354)
Self test (355)
Self test (356)
Self test (357)
Self test (358)
Self test (359)
Self test (360)
Self test (361)
Self test (362)
Self test (363)
Self test (364)
...

FALSE

evaluated 177344 times by 121 tests

Evaluated by:

Self test
Self test (101)
Self test (104)
Self test (105)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (354)
Self test (355)
Self test (356)
Self test (357)
Self test (358)
Self test (359)
Self test (360)
Self test (361)
Self test (362)
Self test (363)
Self test (364)
Self test (365)
...

38952-177344

3725 int dirfd; -

3726

OSTRACE(("DIRSYNC %s (have_fullfsync=%d fullsync=%d)\n", pFile->zPath,

never executed: sqlite3DebugPrintf ("DIRSYNC %s (have_fullfsync=%d fullsync=%d)\n", pFile->zPath, 0, isFullsync) ;

sqlite3OSTrace

Description

TRUE

never evaluated

FALSE

evaluated 38952 times by 125 tests

Evaluated by:

Self test
Self test (101)
Self test (104)
Self test (105)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (353)
Self test (354)
Self test (355)
Self test (356)
Self test (357)
Self test (358)
Self test (359)
Self test (360)
Self test (361)
Self test (362)
Self test (363)
Self test (364)
...

0-38952

3727

HAVE_FULLFSYNC, isFullsync));

never executed: sqlite3DebugPrintf ("DIRSYNC %s (have_fullfsync=%d fullsync=%d)\n", pFile->zPath, 0, isFullsync) ;

3728 rc = osOpenDirectory(pFile->zPath, &dirfd); -

3729

if( rc==SQLITE_OK ){

rc==0

Description

TRUE

evaluated 38952 times by 125 tests

Evaluated by:

Self test
Self test (101)
Self test (104)
Self test (105)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (353)
Self test (354)
Self test (355)
Self test (356)
Self test (357)
Self test (358)
Self test (359)
Self test (360)
Self test (361)
Self test (362)
Self test (363)
Self test (364)
...

FALSE

never evaluated

0-38952

3730 full_fsync(dirfd, 0, 0); -

3731 robust_close(pFile, dirfd, __LINE__); -

3732

}else{

executed 38952 times by 125 tests: end of block

Executed by:

Self test
Self test (101)
Self test (104)
Self test (105)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (353)
Self test (354)
Self test (355)
Self test (356)
Self test (357)
Self test (358)
Self test (359)
Self test (360)
Self test (361)
Self test (362)
Self test (363)
Self test (364)
...

38952

3733 assert( rc==SQLITE_CANTOPEN ); -

3734 rc = SQLITE_OK; -

3735

}

never executed: end of block

3736 pFile->ctrlFlags &= ~UNIXFILE_DIRSYNC; -

3737

}

executed 38952 times by 125 tests: end of block

Executed by:

Self test
Self test (101)
Self test (104)
Self test (105)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (353)
Self test (354)
Self test (355)
Self test (356)
Self test (357)
Self test (358)
Self test (359)
Self test (360)
Self test (361)
Self test (362)
Self test (363)
Self test (364)
...

38952

3738

return rc;

executed 216296 times by 125 tests: return rc;

Executed by:

Self test
Self test (101)
Self test (104)
Self test (105)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (353)
Self test (354)
Self test (355)
Self test (356)
Self test (357)
Self test (358)
Self test (359)
Self test (360)
Self test (361)
Self test (362)
Self test (363)
Self test (364)
...

216296

3739 } -

3740 -

3741 /* -

3742 ** Truncate an open file to a specified size -

3743 */ -

3744 static int unixTruncate(sqlite3_file *id, i64 nByte){ -

3745 unixFile *pFile = (unixFile *)id; -

3746 int rc; -

3747 assert( pFile ); -

3748

SimulateIOError( return SQLITE_IOERR_TRUNCATE );

executed 4 times by 1 test: return (10 | (6<<8));

Executed by:

Self test (438)

sqlite3_io_error_persist	Description
TRUE	evaluated 4 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 6227 times by 20 tests Evaluated by: Self test (10) Self test (101) Self test (104) Self test (105) Self test (11) Self test (14) Self test (15) Self test (19) Self test (20) Self test (23) Self test (32) Self test (33) Self test (34) Self test (438) Self test (7) Self test (72) Self test (75) Self test (8) Self test (84) Self test (89)

sqlite3_io_error_hit	Description
TRUE	never evaluated
FALSE	evaluated 4 times by 1 test Evaluated by: Self test (438)

sqlite3_io_err...pending-- == 1	Description
TRUE	evaluated 4 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 6227 times by 20 tests Evaluated by: Self test (10) Self test (101) Self test (104) Self test (105) Self test (11) Self test (14) Self test (15) Self test (19) Self test (20) Self test (23) Self test (32) Self test (33) Self test (34) Self test (438) Self test (7) Self test (72) Self test (75) Self test (8) Self test (84) Self test (89)

0-6227

3749 -

3750 /* If the user has configured a chunk-size for this file, truncate the -

3751 ** file so that it consists of an integer number of chunks (i.e. the -

3752 ** actual file size after the operation may be larger than the requested -

3753 ** size). -

3754 */ -

3755

if( pFile->szChunk>0 ){

pFile->szChunk>0	Description
TRUE	evaluated 6 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 6221 times by 20 tests Evaluated by: Self test (10) Self test (101) Self test (104) Self test (105) Self test (11) Self test (14) Self test (15) Self test (19) Self test (20) Self test (23) Self test (32) Self test (33) Self test (34) Self test (438) Self test (7) Self test (72) Self test (75) Self test (8) Self test (84) Self test (89)

6-6221

3756 nByte = ((nByte + pFile->szChunk - 1)/pFile->szChunk) * pFile->szChunk; -

3757

}

executed 6 times by 1 test: end of block

Executed by:

Self test (438)

3758 -

3759 rc = robust_ftruncate(pFile->h, nByte); -

3760

if( rc ){

rc	Description
TRUE	never evaluated
FALSE	evaluated 6227 times by 20 tests Evaluated by: Self test (10) Self test (101) Self test (104) Self test (105) Self test (11) Self test (14) Self test (15) Self test (19) Self test (20) Self test (23) Self test (32) Self test (33) Self test (34) Self test (438) Self test (7) Self test (72) Self test (75) Self test (8) Self test (84) Self test (89)

0-6227

3761 storeLastErrno(pFile, errno); -

3762

return unixLogError(SQLITE_IOERR_TRUNCATE, "ftruncate", pFile->zPath);

never executed: return unixLogErrorAtLine((10 | (6<<8)),"ftruncate",pFile->zPath,3762);

3763 }else{ -

3764 #ifdef SQLITE_DEBUG -

3765 /* If we are doing a normal write to a database file (as opposed to -

3766 ** doing a hot-journal rollback or a write to some file other than a -

3767 ** normal database file) and we truncate the file to zero length, -

3768 ** that effectively updates the change counter. This might happen -

3769 ** when restoring a database using the backup API from a zero-length -

3770 ** source. -

3771 */ -

3772 if( pFile->inNormalWrite && nByte==0 ){ -

3773 pFile->transCntrChng = 1; -

3774 } -

3775 #endif -

3776 -

3777 #if SQLITE_MAX_MMAP_SIZE>0 -

3778 /* If the file was just truncated to a size smaller than the currently -

3779 ** mapped region, reduce the effective mapping size as well. SQLite will -

3780 ** use read() and write() to access data beyond this point from now on. -

3781 */ -

3782

if( nByte<pFile->mmapSize ){

nByte<pFile->mmapSize	Description
TRUE	evaluated 6 times by 2 tests Evaluated by: Self test (33) Self test (438)
FALSE	evaluated 6221 times by 19 tests Evaluated by: Self test (10) Self test (101) Self test (104) Self test (105) Self test (11) Self test (14) Self test (15) Self test (19) Self test (20) Self test (23) Self test (32) Self test (34) Self test (438) Self test (7) Self test (72) Self test (75) Self test (8) Self test (84) Self test (89)

6-6221

3783 pFile->mmapSize = nByte; -

3784

}

executed 6 times by 2 tests: end of block

Executed by:

Self test (33)
Self test (438)

3785 #endif -

3786 -

3787

return SQLITE_OK;

executed 6227 times by 20 tests: return 0;

Executed by:

Self test (10)
Self test (101)
Self test (104)
Self test (105)
Self test (11)
Self test (14)
Self test (15)
Self test (19)
Self test (20)
Self test (23)
Self test (32)
Self test (33)
Self test (34)
Self test (438)
Self test (7)
Self test (72)
Self test (75)
Self test (8)
Self test (84)
Self test (89)

6227

3788 } -

3789 } -

3790 -

3791 /* -

3792 ** Determine the current size of a file in bytes -

3793 */ -

3794 static int unixFileSize(sqlite3_file *id, i64 *pSize){ -

3795 int rc; -

3796 struct stat buf; -

3797 assert( id ); -

3798 rc = osFstat(((unixFile*)id)->h, &buf); -

3799

SimulateIOError( rc=1 );

executed 86 times by 1 test: end of block

Executed by:

Self test (438)

sqlite3_io_error_persist

Description

TRUE

evaluated 284 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 152493 times by 435 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

sqlite3_io_error_hit	Description
TRUE	evaluated 54 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 230 times by 1 test Evaluated by: Self test (438)

sqlite3_io_err...pending-- == 1

Description

TRUE

evaluated 32 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 152691 times by 435 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

32-152691

3800

if( rc!=0 ){

rc!=0

Description

TRUE

evaluated 86 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 152691 times by 435 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

86-152691

3801 storeLastErrno((unixFile*)id, errno); -

3802

return SQLITE_IOERR_FSTAT;

executed 86 times by 1 test: return (10 | (7<<8));

Executed by:

Self test (438)

3803 } -

3804 *pSize = buf.st_size; -

3805 -

3806 /* When opening a zero-size database, the findInodeInfo() procedure -

3807 ** writes a single byte into that file in order to work around a bug -

3808 ** in the OS-X msdos filesystem. In order to avoid problems with upper -

3809 ** layers, we need to report this file size as zero even though it is -

3810 ** really 1. Ticket #3260. -

3811 */ -

3812

if( *pSize==1 ) *pSize = 0;

executed 2 times by 1 test: *pSize = 0;

Executed by:

Self test (438)

*pSize==1

Description

TRUE

evaluated 2 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 152689 times by 435 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

2-152689

3813 -

3814 -

3815

return SQLITE_OK;

executed 152691 times by 435 tests: return 0;

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

152691

3816 } -

3817 -

3818 #if SQLITE_ENABLE_LOCKING_STYLE && defined(__APPLE__) -

3819 /* -

3820 ** Handler for proxy-locking file-control verbs. Defined below in the -

3821 ** proxying locking division. -

3822 */ -

3823 static int proxyFileControl(sqlite3_file*,int,void*); -

3824 #endif -

3825 -

3826 /* -

3827 ** This function is called to handle the SQLITE_FCNTL_SIZE_HINT -

3828 ** file-control operation. Enlarge the database to nBytes in size -

3829 ** (rounded up to the next chunk-size). If the database is already -

3830 ** nBytes or larger, this routine is a no-op. -

3831 */ -

3832 static int fcntlSizeHint(unixFile *pFile, i64 nByte){ -

3833

if( pFile->szChunk>0 ){

pFile->szChunk>0

Description

TRUE

evaluated 3303 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 31018 times by 108 tests

Evaluated by:

Self test
Self test (101)
Self test (104)
Self test (105)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (32)
Self test (33)
Self test (354)
Self test (355)
Self test (356)
Self test (357)
Self test (358)
Self test (359)
Self test (360)
Self test (361)
Self test (362)
Self test (363)
Self test (364)
Self test (365)
Self test (366)
Self test (367)
Self test (368)
...

3303-31018

3834 i64 nSize; /* Required file size */ -

3835 struct stat buf; /* Used to hold return values of fstat() */ -

3836 -

3837

if( osFstat(pFile->h, &buf) ){

((int(*)(int,s...File->h, &buf)	Description
TRUE	never evaluated
FALSE	evaluated 3303 times by 1 test Evaluated by: Self test (438)

0-3303

3838

return SQLITE_IOERR_FSTAT;

never executed: return (10 | (7<<8));

3839 } -

3840 -

3841 nSize = ((nByte+pFile->szChunk-1) / pFile->szChunk) * pFile->szChunk; -

3842

if( nSize>(i64)buf.st_size ){

nSize>(i64)buf.st_size	Description
TRUE	evaluated 3146 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 157 times by 1 test Evaluated by: Self test (438)

157-3146

3843 -

3844 #if defined(HAVE_POSIX_FALLOCATE) && HAVE_POSIX_FALLOCATE -

3845 /* The code below is handling the return value of osFallocate() -

3846 ** correctly. posix_fallocate() is defined to "returns zero on success, -

3847 ** or an error number on failure". See the manpage for details. */ -

3848 int err; -

3849 do{ -

3850 err = osFallocate(pFile->h, buf.st_size, nSize-buf.st_size); -

3851 }while( err==EINTR ); -

3852 if( err && err!=EINVAL ) return SQLITE_IOERR_WRITE; -

3853 #else -

3854 /* If the OS does not have posix_fallocate(), fake it. Write a -

3855 ** single byte to the last byte in each block that falls entirely -

3856 ** within the extended region. Then, if required, a single byte -

3857 ** at offset (nSize-1), to set the size of the file correctly. -

3858 ** This is a similar technique to that used by glibc on systems -

3859 ** that do not have a real fallocate() call. -

3860 */ -

3861 int nBlk = buf.st_blksize; /* File-system block size */ -

3862 int nWrite = 0; /* Number of bytes written by seekAndWrite */ -

3863 i64 iWrite; /* Next offset to write to */ -

3864 -

3865 iWrite = (buf.st_size/nBlk)*nBlk + nBlk - 1; -

3866 assert( iWrite>=buf.st_size ); -

3867 assert( ((iWrite+1)%nBlk)==0 ); -

3868

for(/*no-op*/; iWrite<nSize+nBlk-1; iWrite+=nBlk ){

iWrite<nSize+nBlk-1	Description
TRUE	evaluated 33370 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 3146 times by 1 test Evaluated by: Self test (438)

3146-33370

3869

if( iWrite>=nSize ) iWrite = nSize - 1;

executed 3 times by 1 test: iWrite = nSize - 1;

Executed by:

Self test (438)

iWrite>=nSize	Description
TRUE	evaluated 3 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 33368 times by 1 test Evaluated by: Self test (438)

3-33368

3870 nWrite = seekAndWrite(pFile, iWrite, "", 1); -

3871

if( nWrite!=1 ) return SQLITE_IOERR_WRITE;

never executed: return (10 | (3<<8));

nWrite!=1	Description
TRUE	never evaluated
FALSE	evaluated 33371 times by 1 test Evaluated by: Self test (438)

0-33371

3872

}

executed 33370 times by 1 test: end of block

Executed by:

Self test (438)

33370

3873 #endif -

3874

}

executed 3146 times by 1 test: end of block

Executed by:

Self test (438)

3146

3875

}

executed 3303 times by 1 test: end of block

Executed by:

Self test (438)

3303

3876 -

3877 #if SQLITE_MAX_MMAP_SIZE>0 -

3878

if( pFile->mmapSizeMax>0 && nByte>pFile->mmapSize ){

pFile->mmapSizeMax>0

Description

TRUE

evaluated 3544 times by 2 tests

Evaluated by:

Self test (33)
Self test (438)

FALSE

evaluated 30777 times by 107 tests

Evaluated by:

Self test
Self test (101)
Self test (104)
Self test (105)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (32)
Self test (354)
Self test (355)
Self test (356)
Self test (357)
Self test (358)
Self test (359)
Self test (360)
Self test (361)
Self test (362)
Self test (363)
Self test (364)
Self test (365)
Self test (366)
Self test (367)
Self test (368)
Self test (369)
...

nByte>pFile->mmapSize	Description
TRUE	evaluated 3544 times by 2 tests Evaluated by: Self test (33) Self test (438)
FALSE	never evaluated

0-30777

3879 int rc; -

3880

if( pFile->szChunk<=0 ){

pFile->szChunk<=0	Description
TRUE	evaluated 335 times by 2 tests Evaluated by: Self test (33) Self test (438)
FALSE	evaluated 3209 times by 1 test Evaluated by: Self test (438)

335-3209

3881

if( robust_ftruncate(pFile->h, nByte) ){

robust_ftrunca...ile->h, nByte)	Description
TRUE	never evaluated
FALSE	evaluated 335 times by 2 tests Evaluated by: Self test (33) Self test (438)

0-335

3882 storeLastErrno(pFile, errno); -

3883

return unixLogError(SQLITE_IOERR_TRUNCATE, "ftruncate", pFile->zPath);

never executed: return unixLogErrorAtLine((10 | (6<<8)),"ftruncate",pFile->zPath,3883);

3884 } -

3885

}

executed 335 times by 2 tests: end of block

Executed by:

Self test (33)
Self test (438)

335

3886 -

3887 rc = unixMapfile(pFile, nByte); -

3888

return rc;

executed 3544 times by 2 tests: return rc;

Executed by:

Self test (33)
Self test (438)

3544

3889 } -

3890 #endif -

3891 -

3892

return SQLITE_OK;

executed 30777 times by 107 tests: return 0;

Executed by:

Self test
Self test (101)
Self test (104)
Self test (105)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (32)
Self test (354)
Self test (355)
Self test (356)
Self test (357)
Self test (358)
Self test (359)
Self test (360)
Self test (361)
Self test (362)
Self test (363)
Self test (364)
Self test (365)
Self test (366)
Self test (367)
Self test (368)
Self test (369)
...

30777

3893 } -

3894 -

3895 /* -

3896 ** If *pArg is initially negative then this is a query. Set *pArg to -

3897 ** 1 or 0 depending on whether or not bit mask of pFile->ctrlFlags is set. -

3898 ** -

3899 ** If *pArg is 0 or 1, then clear or set the mask bit of pFile->ctrlFlags. -

3900 */ -

3901 static void unixModeBit(unixFile *pFile, unsigned char mask, int *pArg){ -

3902

if( *pArg<0 ){

*pArg<0	Description
TRUE	evaluated 848 times by 10 tests Evaluated by: Self test (101) Self test (104) Self test (105) Self test (438) Self test (73) Self test (75) Self test (80) Self test (82) Self test (85) Self test (90)
FALSE	evaluated 9 times by 1 test Evaluated by: Self test (438)

9-848

3903 *pArg = (pFile->ctrlFlags & mask)!=0; -

3904

}else if( (*pArg)==0 ){

executed 848 times by 10 tests: end of block

Executed by:

Self test (101)
Self test (104)
Self test (105)
Self test (438)
Self test (73)
Self test (75)
Self test (80)
Self test (82)
Self test (85)
Self test (90)

(*pArg)==0	Description
TRUE	evaluated 2 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 7 times by 1 test Evaluated by: Self test (438)

2-848

3905 pFile->ctrlFlags &= ~mask; -

3906

}else{

executed 2 times by 1 test: end of block

Executed by:

Self test (438)

3907 pFile->ctrlFlags |= mask; -

3908

}

executed 7 times by 1 test: end of block

Executed by:

Self test (438)

3909 } -

3910 -

3911 /* Forward declaration */ -

3912 static int unixGetTempname(int nBuf, char *zBuf); -

3913 -

3914 /* -

3915 ** Information and control of an open file handle. -

3916 */ -

3917 static int unixFileControl(sqlite3_file *id, int op, void *pArg){ -

3918 unixFile *pFile = (unixFile*)id; -

3919 switch( op ){ -

3920 #if defined(__linux__) && defined(SQLITE_ENABLE_BATCH_ATOMIC_WRITE) -

3921 case SQLITE_FCNTL_BEGIN_ATOMIC_WRITE: { -

3922 int rc = osIoctl(pFile->h, F2FS_IOC_START_ATOMIC_WRITE); -

3923 return rc ? SQLITE_IOERR_BEGIN_ATOMIC : SQLITE_OK; -

3924 } -

3925 case SQLITE_FCNTL_COMMIT_ATOMIC_WRITE: { -

3926 int rc = osIoctl(pFile->h, F2FS_IOC_COMMIT_ATOMIC_WRITE); -

3927 return rc ? SQLITE_IOERR_COMMIT_ATOMIC : SQLITE_OK; -

3928 } -

3929 case SQLITE_FCNTL_ROLLBACK_ATOMIC_WRITE: { -

3930 int rc = osIoctl(pFile->h, F2FS_IOC_ABORT_VOLATILE_WRITE); -

3931 return rc ? SQLITE_IOERR_ROLLBACK_ATOMIC : SQLITE_OK; -

3932 } -

3933 #endif /* __linux__ && SQLITE_ENABLE_BATCH_ATOMIC_WRITE */ -

3934 -

3935

case SQLITE_FCNTL_LOCKSTATE: {

executed 144 times by 2 tests: case 1:

Executed by:

Self test (35)
Self test (438)

144

3936 *(int*)pArg = pFile->eFileLock; -

3937

return SQLITE_OK;

executed 144 times by 2 tests: return 0;

Executed by:

Self test (35)
Self test (438)

144

3938 } -

3939

case SQLITE_FCNTL_LAST_ERRNO: {

executed 1 time by 1 test: case 4:

Executed by:

Self test (438)

3940 *(int*)pArg = pFile->lastErrno; -

3941

return SQLITE_OK;

executed 1 time by 1 test: return 0;

Executed by:

Self test (438)

3942 } -

3943

case SQLITE_FCNTL_CHUNK_SIZE: {

executed 3214 times by 1 test: case 6:

Executed by:

Self test (438)

3214

3944 pFile->szChunk = *(int *)pArg; -

3945

return SQLITE_OK;

executed 3214 times by 1 test: return 0;

Executed by:

Self test (438)

3214

3946 } -

3947

case SQLITE_FCNTL_SIZE_HINT: {

executed 34321 times by 108 tests: case 5:

Executed by:

Self test
Self test (101)
Self test (104)
Self test (105)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (32)
Self test (33)
Self test (354)
Self test (355)
Self test (356)
Self test (357)
Self test (358)
Self test (359)
Self test (360)
Self test (361)
Self test (362)
Self test (363)
Self test (364)
Self test (365)
Self test (366)
Self test (367)
Self test (368)
...

34321

3948 int rc; -

3949 SimulateIOErrorBenign(1); -

3950 rc = fcntlSizeHint(pFile, *(i64 *)pArg); -

3951 SimulateIOErrorBenign(0); -

3952

return rc;

executed 34321 times by 108 tests: return rc;

Executed by:

Self test
Self test (101)
Self test (104)
Self test (105)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (32)
Self test (33)
Self test (354)
Self test (355)
Self test (356)
Self test (357)
Self test (358)
Self test (359)
Self test (360)
Self test (361)
Self test (362)
Self test (363)
Self test (364)
Self test (365)
Self test (366)
Self test (367)
Self test (368)
...

34321

3953 } -

3954

case SQLITE_FCNTL_PERSIST_WAL: {

executed 850 times by 10 tests: case 10:

Executed by:

Self test (101)
Self test (104)
Self test (105)
Self test (438)
Self test (73)
Self test (75)
Self test (80)
Self test (82)
Self test (85)
Self test (90)

850

3955 unixModeBit(pFile, UNIXFILE_PERSIST_WAL, (int*)pArg); -

3956

return SQLITE_OK;

executed 850 times by 10 tests: return 0;

Executed by:

Self test (101)
Self test (104)
Self test (105)
Self test (438)
Self test (73)
Self test (75)
Self test (80)
Self test (82)
Self test (85)
Self test (90)

850

3957 } -

3958

case SQLITE_FCNTL_POWERSAFE_OVERWRITE: {

executed 7 times by 1 test: case 13:

Executed by:

Self test (438)

3959 unixModeBit(pFile, UNIXFILE_PSOW, (int*)pArg); -

3960

return SQLITE_OK;

executed 7 times by 1 test: return 0;

Executed by:

Self test (438)

3961 } -

3962

case SQLITE_FCNTL_VFSNAME: {

executed 2 times by 1 test: case 12:

Executed by:

Self test (438)

3963 *(char**)pArg = sqlite3_mprintf("%s", pFile->pVfs->zName); -

3964

return SQLITE_OK;

executed 2 times by 1 test: return 0;

Executed by:

Self test (438)

3965 } -

3966

case SQLITE_FCNTL_TEMPFILENAME: {

executed 1 time by 1 test: case 16:

Executed by:

Self test (438)

3967 char *zTFile = sqlite3_malloc64( pFile->pVfs->mxPathname ); -

3968

if( zTFile ){

zTFile	Description
TRUE	evaluated 1 time by 1 test Evaluated by: Self test (438)
FALSE	never evaluated

0-1

3969 unixGetTempname(pFile->pVfs->mxPathname, zTFile); -

3970 *(char**)pArg = zTFile; -

3971

}

executed 1 time by 1 test: end of block

Executed by:

Self test (438)

3972

return SQLITE_OK;

executed 1 time by 1 test: return 0;

Executed by:

Self test (438)

3973 } -

3974

case SQLITE_FCNTL_HAS_MOVED: {

executed 55073 times by 422 tests: case 20:

Executed by:

Self test
Self test (10)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
Self test (122)
...

55073

3975 *(int*)pArg = fileHasMoved(pFile); -

3976

return SQLITE_OK;

executed 55073 times by 422 tests: return 0;

Executed by:

Self test
Self test (10)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
Self test (122)
...

55073

3977 } -

3978 #ifdef SQLITE_ENABLE_SETLK_TIMEOUT -

3979 case SQLITE_FCNTL_LOCK_TIMEOUT: { -

3980 pFile->iBusyTimeout = *(int*)pArg; -

3981 return SQLITE_OK; -

3982 } -

3983 #endif -

3984 #if SQLITE_MAX_MMAP_SIZE>0 -

3985

case SQLITE_FCNTL_MMAP_SIZE: {

executed 98479 times by 74 tests: case 18:

Executed by:

Self test
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (24)
Self test (25)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (30)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (35)
Self test (36)
Self test (37)
Self test (38)
Self test (39)
Self test (40)
Self test (41)
Self test (42)
...

98479

3986 i64 newLimit = *(i64*)pArg; -

3987 int rc = SQLITE_OK; -

3988

if( newLimit>sqlite3GlobalConfig.mxMmap ){

newLimit>sqlite3Config.mxMmap

Description

TRUE

never evaluated

FALSE

evaluated 98479 times by 74 tests

Evaluated by:

Self test
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (24)
Self test (25)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (30)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (35)
Self test (36)
Self test (37)
Self test (38)
Self test (39)
Self test (40)
Self test (41)
Self test (42)
...

0-98479

3989 newLimit = sqlite3GlobalConfig.mxMmap; -

3990

}

never executed: end of block

3991 -

3992 /* The value of newLimit may be eventually cast to (size_t) and passed -

3993 ** to mmap(). Restrict its value to 2GB if (size_t) is not at least a -

3994 ** 64-bit type. */ -

3995

if( newLimit>0 && sizeof(size_t)<8 ){

newLimit>0

Description

TRUE

evaluated 405 times by 2 tests

Evaluated by:

Self test (33)
Self test (438)

FALSE

evaluated 98074 times by 74 tests

Evaluated by:

Self test
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (24)
Self test (25)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (30)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (35)
Self test (36)
Self test (37)
Self test (38)
Self test (39)
Self test (40)
Self test (41)
Self test (42)
...

sizeof(size_t)<8	Description
TRUE	never evaluated
FALSE	evaluated 405 times by 2 tests Evaluated by: Self test (33) Self test (438)

0-98074

3996 newLimit = (newLimit & 0x7FFFFFFF); -

3997

}

never executed: end of block

3998 -

3999 *(i64*)pArg = pFile->mmapSizeMax; -

4000

if( newLimit>=0 && newLimit!=pFile->mmapSizeMax && pFile->nFetchOut==0 ){

newLimit>=0

Description

TRUE

evaluated 98217 times by 74 tests

Evaluated by:

Self test
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (24)
Self test (25)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (30)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (35)
Self test (36)
Self test (37)
Self test (38)
Self test (39)
Self test (40)
Self test (41)
Self test (42)
...

FALSE

evaluated 262 times by 3 tests

Evaluated by:

Self test (32)
Self test (33)
Self test (438)

newLimit!=pFile->mmapSizeMax

Description

TRUE

evaluated 398 times by 2 tests

Evaluated by:

Self test (33)
Self test (438)

FALSE

evaluated 97819 times by 74 tests

Evaluated by:

Self test
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (24)
Self test (25)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (30)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (35)
Self test (36)
Self test (37)
Self test (38)
Self test (39)
Self test (40)
Self test (41)
Self test (42)
...

pFile->nFetchOut==0	Description
TRUE	evaluated 386 times by 2 tests Evaluated by: Self test (33) Self test (438)
FALSE	evaluated 12 times by 1 test Evaluated by: Self test (438)

12-98217

4001 pFile->mmapSizeMax = newLimit; -

4002

if( pFile->mmapSize>0 ){

pFile->mmapSize>0	Description
TRUE	evaluated 3 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 383 times by 2 tests Evaluated by: Self test (33) Self test (438)

3-383

4003 unixUnmapfile(pFile); -

4004 rc = unixMapfile(pFile, -1); -

4005

}

executed 3 times by 1 test: end of block

Executed by:

Self test (438)

4006

}

executed 386 times by 2 tests: end of block

Executed by:

Self test (33)
Self test (438)

386

4007

return rc;

executed 98479 times by 74 tests: return rc;

Executed by:

Self test
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (24)
Self test (25)
Self test (26)
Self test (27)
Self test (28)
Self test (29)
Self test (30)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (35)
Self test (36)
Self test (37)
Self test (38)
Self test (39)
Self test (40)
Self test (41)
Self test (42)
...

98479

4008 } -

4009 #endif -

4010 #ifdef SQLITE_DEBUG -

4011 /* The pager calls this method to signal that it has done -

4012 ** a rollback and that the database is therefore unchanged and -

4013 ** it hence it is OK for the transaction change counter to be -

4014 ** unchanged. -

4015 */ -

4016 case SQLITE_FCNTL_DB_UNCHANGED: { -

4017 ((unixFile*)id)->dbUpdate = 0; -

4018 return SQLITE_OK; -

4019 } -

4020 #endif -

4021 #if SQLITE_ENABLE_LOCKING_STYLE && defined(__APPLE__) -

4022 case SQLITE_FCNTL_SET_LOCKPROXYFILE: -

4023 case SQLITE_FCNTL_GET_LOCKPROXYFILE: { -

4024 return proxyFileControl(id,op,pArg); -

4025 } -

4026 #endif /* SQLITE_ENABLE_LOCKING_STYLE && defined(__APPLE__) */ -

4027 } -

4028

return SQLITE_NOTFOUND;

executed 236976 times by 438 tests: return 12;

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
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Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

236976

4029 } -

4030 -

4031 /* -

4032 ** If pFd->sectorSize is non-zero when this function is called, it is a -

4033 ** no-op. Otherwise, the values of pFd->sectorSize and -

4034 ** pFd->deviceCharacteristics are set according to the file-system -

4035 ** characteristics. -

4036 ** -

4037 ** There are two versions of this function. One for QNX and one for all -

4038 ** other systems. -

4039 */ -

4040 #ifndef __QNXNTO__ -

4041 static void setDeviceCharacteristics(unixFile *pFd){ -

4042 assert( pFd->deviceCharacteristics==0 || pFd->sectorSize!=0 ); -

4043

if( pFd->sectorSize==0 ){

pFd->sectorSize==0

Description

TRUE

evaluated 31947 times by 406 tests

Evaluated by:

Self test
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
Self test (124)
...

FALSE

evaluated 327376 times by 406 tests

Evaluated by:

Self test
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
Self test (124)
...

31947-327376

4044 #if defined(__linux__) && defined(SQLITE_ENABLE_BATCH_ATOMIC_WRITE) -

4045 int res; -

4046 u32 f = 0; -

4047 -

4048 /* Check for support for F2FS atomic batch writes. */ -

4049 res = osIoctl(pFd->h, F2FS_IOC_GET_FEATURES, &f); -

4050 if( res==0 && (f & F2FS_FEATURE_ATOMIC_WRITE) ){ -

4051 pFd->deviceCharacteristics = SQLITE_IOCAP_BATCH_ATOMIC; -

4052 } -

4053 #endif /* __linux__ && SQLITE_ENABLE_BATCH_ATOMIC_WRITE */ -

4054 -

4055 /* Set the POWERSAFE_OVERWRITE flag if requested. */ -

4056

if( pFd->ctrlFlags & UNIXFILE_PSOW ){

pFd->ctrlFlags & 0x10

Description

TRUE

evaluated 31941 times by 406 tests

Evaluated by:

Self test
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
Self test (124)
...

FALSE

evaluated 6 times by 2 tests

Evaluated by:

Self test (438)
Self test (61)

6-31941

4057 pFd->deviceCharacteristics |= SQLITE_IOCAP_POWERSAFE_OVERWRITE; -

4058

}

executed 31941 times by 406 tests: end of block

Executed by:

Self test
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
Self test (124)
...

31941

4059 -

4060 pFd->sectorSize = SQLITE_DEFAULT_SECTOR_SIZE; -

4061

}

executed 31947 times by 406 tests: end of block

Executed by:

Self test
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
Self test (124)
...

31947

4062

}

executed 359323 times by 406 tests: end of block

Executed by:

Self test
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
Self test (124)
...

359323

4063 #else -

4064 #include <sys/dcmd_blk.h> -

4065 #include <sys/statvfs.h> -

4066 static void setDeviceCharacteristics(unixFile *pFile){ -

4067 if( pFile->sectorSize == 0 ){ -

4068 struct statvfs fsInfo; -

4069 -

4070 /* Set defaults for non-supported filesystems */ -

4071 pFile->sectorSize = SQLITE_DEFAULT_SECTOR_SIZE; -

4072 pFile->deviceCharacteristics = 0; -

4073 if( fstatvfs(pFile->h, &fsInfo) == -1 ) { -

4074 return; -

4075 } -

4076 -

4077 if( !strcmp(fsInfo.f_basetype, "tmp") ) { -

4078 pFile->sectorSize = fsInfo.f_bsize; -

4079 pFile->deviceCharacteristics = -

4080 SQLITE_IOCAP_ATOMIC4K | /* All ram filesystem writes are atomic */ -

4081 SQLITE_IOCAP_SAFE_APPEND | /* growing the file does not occur until -

4082 ** the write succeeds */ -

4083 SQLITE_IOCAP_SEQUENTIAL | /* The ram filesystem has no write behind -

4084 ** so it is ordered */ -

4085 0; -

4086 }else if( strstr(fsInfo.f_basetype, "etfs") ){ -

4087 pFile->sectorSize = fsInfo.f_bsize; -

4088 pFile->deviceCharacteristics = -

4089 /* etfs cluster size writes are atomic */ -

4090 (pFile->sectorSize / 512 * SQLITE_IOCAP_ATOMIC512) | -

4091 SQLITE_IOCAP_SAFE_APPEND | /* growing the file does not occur until -

4092 ** the write succeeds */ -

4093 SQLITE_IOCAP_SEQUENTIAL | /* The ram filesystem has no write behind -

4094 ** so it is ordered */ -

4095 0; -

4096 }else if( !strcmp(fsInfo.f_basetype, "qnx6") ){ -

4097 pFile->sectorSize = fsInfo.f_bsize; -

4098 pFile->deviceCharacteristics = -

4099 SQLITE_IOCAP_ATOMIC | /* All filesystem writes are atomic */ -

4100 SQLITE_IOCAP_SAFE_APPEND | /* growing the file does not occur until -

4101 ** the write succeeds */ -

4102 SQLITE_IOCAP_SEQUENTIAL | /* The ram filesystem has no write behind -

4103 ** so it is ordered */ -

4104 0; -

4105 }else if( !strcmp(fsInfo.f_basetype, "qnx4") ){ -

4106 pFile->sectorSize = fsInfo.f_bsize; -

4107 pFile->deviceCharacteristics = -

4108 /* full bitset of atomics from max sector size and smaller */ -

4109 ((pFile->sectorSize / 512 * SQLITE_IOCAP_ATOMIC512) << 1) - 2 | -

4110 SQLITE_IOCAP_SEQUENTIAL | /* The ram filesystem has no write behind -

4111 ** so it is ordered */ -

4112 0; -

4113 }else if( strstr(fsInfo.f_basetype, "dos") ){ -

4114 pFile->sectorSize = fsInfo.f_bsize; -

4115 pFile->deviceCharacteristics = -

4116 /* full bitset of atomics from max sector size and smaller */ -

4117 ((pFile->sectorSize / 512 * SQLITE_IOCAP_ATOMIC512) << 1) - 2 | -

4118 SQLITE_IOCAP_SEQUENTIAL | /* The ram filesystem has no write behind -

4119 ** so it is ordered */ -

4120 0; -

4121 }else{ -

4122 pFile->deviceCharacteristics = -

4123 SQLITE_IOCAP_ATOMIC512 | /* blocks are atomic */ -

4124 SQLITE_IOCAP_SAFE_APPEND | /* growing the file does not occur until -

4125 ** the write succeeds */ -

4126 0; -

4127 } -

4128 } -

4129 /* Last chance verification. If the sector size isn't a multiple of 512 -

4130 ** then it isn't valid.*/ -

4131 if( pFile->sectorSize % 512 != 0 ){ -

4132 pFile->deviceCharacteristics = 0; -

4133 pFile->sectorSize = SQLITE_DEFAULT_SECTOR_SIZE; -

4134 } -

4135 } -

4136 #endif -

4137 -

4138 /* -

4139 ** Return the sector size in bytes of the underlying block device for -

4140 ** the specified file. This is almost always 512 bytes, but may be -

4141 ** larger for some devices. -

4142 ** -

4143 ** SQLite code assumes this function cannot fail. It also assumes that -

4144 ** if two files are created in the same file-system directory (i.e. -

4145 ** a database and its journal file) that the sector size will be the -

4146 ** same for both. -

4147 */ -

4148 static int unixSectorSize(sqlite3_file *id){ -

4149 unixFile *pFd = (unixFile*)id; -

4150 setDeviceCharacteristics(pFd); -

4151

return pFd->sectorSize;

executed 20 times by 2 tests: return pFd->sectorSize;

Executed by:

Self test (438)
Self test (61)

4152 } -

4153 -

4154 /* -

4155 ** Return the device characteristics for the file. -

4156 ** -

4157 ** This VFS is set up to return SQLITE_IOCAP_POWERSAFE_OVERWRITE by default. -

4158 ** However, that choice is controversial since technically the underlying -

4159 ** file system does not always provide powersafe overwrites. (In other -

4160 ** words, after a power-loss event, parts of the file that were never -

4161 ** written might end up being altered.) However, non-PSOW behavior is very, -

4162 ** very rare. And asserting PSOW makes a large reduction in the amount -

4163 ** of required I/O for journaling, since a lot of padding is eliminated. -

4164 ** Hence, while POWERSAFE_OVERWRITE is on by default, there is a file-control -

4165 ** available to turn it off and URI query parameter available to turn it off. -

4166 */ -

4167 static int unixDeviceCharacteristics(sqlite3_file *id){ -

4168 unixFile *pFd = (unixFile*)id; -

4169 setDeviceCharacteristics(pFd); -

4170

return pFd->deviceCharacteristics;

executed 359303 times by 406 tests: return pFd->deviceCharacteristics;

Executed by:

Self test
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
Self test (124)
...

359303

4171 } -

4172 -

4173 #if !defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0 -

4174 -

4175 /* -

4176 ** Return the system page size. -

4177 ** -

4178 ** This function should not be called directly by other code in this file. -

4179 ** Instead, it should be called via macro osGetpagesize(). -

4180 */ -

4181 static int unixGetpagesize(void){ -

4182 #if OS_VXWORKS -

4183 return 1024; -

4184 #elif defined(_BSD_SOURCE) -

4185 return getpagesize(); -

4186 #else -

4187

return (int)sysconf(_SC_PAGESIZE);

executed 2924 times by 49 tests: return (int)sysconf( _SC_PAGESIZE );

Executed by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

2924

4188 #endif -

4189 } -

4190 -

4191 #endif /* !defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0 */ -

4192 -

4193 #ifndef SQLITE_OMIT_WAL -

4194 -

4195 /* -

4196 ** Object used to represent an shared memory buffer. -

4197 ** -

4198 ** When multiple threads all reference the same wal-index, each thread -

4199 ** has its own unixShm object, but they all point to a single instance -

4200 ** of this unixShmNode object. In other words, each wal-index is opened -

4201 ** only once per process. -

4202 ** -

4203 ** Each unixShmNode object is connected to a single unixInodeInfo object. -

4204 ** We could coalesce this object into unixInodeInfo, but that would mean -

4205 ** every open file that does not use shared memory (in other words, most -

4206 ** open files) would have to carry around this extra information. So -

4207 ** the unixInodeInfo object contains a pointer to this unixShmNode object -

4208 ** and the unixShmNode object is created only when needed. -

4209 ** -

4210 ** unixMutexHeld() must be true when creating or destroying -

4211 ** this object or while reading or writing the following fields: -

4212 ** -

4213 ** nRef -

4214 ** -

4215 ** The following fields are read-only after the object is created: -

4216 ** -

4217 ** fid -

4218 ** zFilename -

4219 ** -

4220 ** Either unixShmNode.mutex must be held or unixShmNode.nRef==0 and -

4221 ** unixMutexHeld() is true when reading or writing any other field -

4222 ** in this structure. -

4223 */ -

4224 struct unixShmNode { -

4225 unixInodeInfo *pInode; /* unixInodeInfo that owns this SHM node */ -

4226 sqlite3_mutex *mutex; /* Mutex to access this object */ -

4227 char *zFilename; /* Name of the mmapped file */ -

4228 int h; /* Open file descriptor */ -

4229 int szRegion; /* Size of shared-memory regions */ -

4230 u16 nRegion; /* Size of array apRegion */ -

4231 u8 isReadonly; /* True if read-only */ -

4232 u8 isUnlocked; /* True if no DMS lock held */ -

4233 char **apRegion; /* Array of mapped shared-memory regions */ -

4234 int nRef; /* Number of unixShm objects pointing to this */ -

4235 unixShm *pFirst; /* All unixShm objects pointing to this */ -

4236 #ifdef SQLITE_DEBUG -

4237 u8 exclMask; /* Mask of exclusive locks held */ -

4238 u8 sharedMask; /* Mask of shared locks held */ -

4239 u8 nextShmId; /* Next available unixShm.id value */ -

4240 #endif -

4241 }; -

4242 -

4243 /* -

4244 ** Structure used internally by this VFS to record the state of an -

4245 ** open shared memory connection. -

4246 ** -

4247 ** The following fields are initialized when this object is created and -

4248 ** are read-only thereafter: -

4249 ** -

4250 ** unixShm.pFile -

4251 ** unixShm.id -

4252 ** -

4253 ** All other fields are read/write. The unixShm.pFile->mutex must be held -

4254 ** while accessing any read/write fields. -

4255 */ -

4256 struct unixShm { -

4257 unixShmNode *pShmNode; /* The underlying unixShmNode object */ -

4258 unixShm *pNext; /* Next unixShm with the same unixShmNode */ -

4259 u8 hasMutex; /* True if holding the unixShmNode mutex */ -

4260 u8 id; /* Id of this connection within its unixShmNode */ -

4261 u16 sharedMask; /* Mask of shared locks held */ -

4262 u16 exclMask; /* Mask of exclusive locks held */ -

4263 }; -

4264 -

4265 /* -

4266 ** Constants used for locking -

4267 */ -

4268 #define UNIX_SHM_BASE ((22+SQLITE_SHM_NLOCK)*4) /* first lock byte */ -

4269 #define UNIX_SHM_DMS (UNIX_SHM_BASE+SQLITE_SHM_NLOCK) /* deadman switch */ -

4270 -

4271 /* -

4272 ** Apply posix advisory locks for all bytes from ofst through ofst+n-1. -

4273 ** -

4274 ** Locks block if the mask is exactly UNIX_SHM_C and are non-blocking -

4275 ** otherwise. -

4276 */ -

4277 static int unixShmSystemLock( -

4278 unixFile *pFile, /* Open connection to the WAL file */ -

4279 int lockType, /* F_UNLCK, F_RDLCK, or F_WRLCK */ -

4280 int ofst, /* First byte of the locking range */ -

4281 int n /* Number of bytes to lock */ -

4282 ){ -

4283 unixShmNode *pShmNode; /* Apply locks to this open shared-memory segment */ -

4284 struct flock f; /* The posix advisory locking structure */ -

4285 int rc = SQLITE_OK; /* Result code form fcntl() */ -

4286 -

4287 /* Access to the unixShmNode object is serialized by the caller */ -

4288 pShmNode = pFile->pInode->pShmNode; -

4289 assert( pShmNode->nRef==0 || sqlite3_mutex_held(pShmNode->mutex) ); -

4290 -

4291 /* Shared locks never span more than one byte */ -

4292 assert( n==1 || lockType!=F_RDLCK ); -

4293 -

4294 /* Locks are within range */ -

4295 assert( n>=1 && n<=SQLITE_SHM_NLOCK ); -

4296 -

4297

if( pShmNode->h>=0 ){

pShmNode->h>=0

Description

TRUE

evaluated 382155 times by 49 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

FALSE

evaluated 68 times by 1 test

Evaluated by:

Self test (438)

68-382155

4298 /* Initialize the locking parameters */ -

4299 f.l_type = lockType; -

4300 f.l_whence = SEEK_SET; -

4301 f.l_start = ofst; -

4302 f.l_len = n; -

4303 rc = osSetPosixAdvisoryLock(pShmNode->h, &f, pFile); -

4304

rc = (rc!=(-1)) ? SQLITE_OK : SQLITE_BUSY;

(rc!=(-1))

Description

TRUE

evaluated 382001 times by 49 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

FALSE

evaluated 154 times by 10 tests

Evaluated by:

Self test (104)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (72)
Self test (73)
Self test (81)
Self test (83)

154-382001

4305

}

executed 382155 times by 49 tests: end of block

Executed by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

382155

4306 -

4307 /* Update the global lock state and do debug tracing */ -

4308 #ifdef SQLITE_DEBUG -

4309 { u16 mask; -

4310 OSTRACE(("SHM-LOCK ")); -

4311 mask = ofst>31 ? 0xffff : (1<<(ofst+n)) - (1<<ofst); -

4312 if( rc==SQLITE_OK ){ -

4313 if( lockType==F_UNLCK ){ -

4314 OSTRACE(("unlock %d ok", ofst)); -

4315 pShmNode->exclMask &= ~mask; -

4316 pShmNode->sharedMask &= ~mask; -

4317 }else if( lockType==F_RDLCK ){ -

4318 OSTRACE(("read-lock %d ok", ofst)); -

4319 pShmNode->exclMask &= ~mask; -

4320 pShmNode->sharedMask |= mask; -

4321 }else{ -

4322 assert( lockType==F_WRLCK ); -

4323 OSTRACE(("write-lock %d ok", ofst)); -

4324 pShmNode->exclMask |= mask; -

4325 pShmNode->sharedMask &= ~mask; -

4326 } -

4327 }else{ -

4328 if( lockType==F_UNLCK ){ -

4329 OSTRACE(("unlock %d failed", ofst)); -

4330 }else if( lockType==F_RDLCK ){ -

4331 OSTRACE(("read-lock failed")); -

4332 }else{ -

4333 assert( lockType==F_WRLCK ); -

4334 OSTRACE(("write-lock %d failed", ofst)); -

4335 } -

4336 } -

4337 OSTRACE((" - afterwards %03x,%03x\n", -

4338 pShmNode->sharedMask, pShmNode->exclMask)); -

4339 } -

4340 #endif -

4341 -

4342

return rc;

executed 382223 times by 49 tests: return rc;

Executed by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

382223

4343 } -

4344 -

4345 /* -

4346 ** Return the minimum number of 32KB shm regions that should be mapped at -

4347 ** a time, assuming that each mapping must be an integer multiple of the -

4348 ** current system page-size. -

4349 ** -

4350 ** Usually, this is 1. The exception seems to be systems that are configured -

4351 ** to use 64KB pages - in this case each mapping must cover at least two -

4352 ** shm regions. -

4353 */ -

4354 static int unixShmRegionPerMap(void){ -

4355 int shmsz = 32*1024; /* SHM region size */ -

4356 int pgsz = osGetpagesize(); /* System page size */ -

4357 assert( ((pgsz-1)&pgsz)==0 ); /* Page size must be a power of 2 */ -

4358

if( pgsz<shmsz ) return 1;

executed 2924 times by 49 tests: return 1;

Executed by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

pgsz<shmsz

Description

TRUE

evaluated 2924 times by 49 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

FALSE

evaluated 5 times by 1 test

Evaluated by:

Self test (438)

5-2924

4359

return pgsz/shmsz;

executed 5 times by 1 test: return pgsz/shmsz;

Executed by:

Self test (438)

4360 } -

4361 -

4362 /* -

4363 ** Purge the unixShmNodeList list of all entries with unixShmNode.nRef==0. -

4364 ** -

4365 ** This is not a VFS shared-memory method; it is a utility function called -

4366 ** by VFS shared-memory methods. -

4367 */ -

4368 static void unixShmPurge(unixFile *pFd){ -

4369 unixShmNode *p = pFd->pInode->pShmNode; -

4370 assert( unixMutexHeld() ); -

4371

if( p && ALWAYS(p->nRef==0) ){

Description

TRUE

evaluated 824 times by 38 tests

Evaluated by:

Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
Self test (75)
Self test (76)
...

FALSE

never evaluated

(p->nRef==0)

Description

TRUE

evaluated 824 times by 38 tests

Evaluated by:

Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
Self test (75)
Self test (76)
...

FALSE

never evaluated

0-824

4372 int nShmPerMap = unixShmRegionPerMap(); -

4373 int i; -

4374 assert( p->pInode==pFd->pInode ); -

4375 sqlite3_mutex_free(p->mutex); -

4376

for(i=0; i<p->nRegion; i+=nShmPerMap){

i<p->nRegion

Description

TRUE

evaluated 886 times by 38 tests

Evaluated by:

Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
Self test (75)
Self test (76)
...

FALSE

evaluated 824 times by 38 tests

Evaluated by:

Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
Self test (75)
Self test (76)
...

824-886

4377

if( p->h>=0 ){

p->h>=0

Description

TRUE

evaluated 884 times by 38 tests

Evaluated by:

Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
Self test (75)
Self test (76)
...

FALSE

evaluated 2 times by 1 test

Evaluated by:

Self test (438)

2-884

4378 osMunmap(p->apRegion[i], p->szRegion); -

4379

}else{

executed 884 times by 38 tests: end of block

Executed by:

Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
Self test (75)
Self test (76)
...

884

4380 sqlite3_free(p->apRegion[i]); -

4381

}

executed 2 times by 1 test: end of block

Executed by:

Self test (438)

4382 } -

4383 sqlite3_free(p->apRegion); -

4384

if( p->h>=0 ){

p->h>=0

Description

TRUE

evaluated 817 times by 38 tests

Evaluated by:

Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
Self test (75)
Self test (76)
...

FALSE

evaluated 7 times by 1 test

Evaluated by:

Self test (438)

7-817

4385 robust_close(pFd, p->h, __LINE__); -

4386 p->h = -1; -

4387

}

executed 817 times by 38 tests: end of block

Executed by:

Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
Self test (75)
Self test (76)
...

817

4388 p->pInode->pShmNode = 0; -

4389 sqlite3_free(p); -

4390

}

executed 824 times by 38 tests: end of block

Executed by:

Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
Self test (75)
Self test (76)
...

824

4391

}

executed 824 times by 38 tests: end of block

Executed by:

Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
Self test (75)
Self test (76)
...

824

4392 -

4393 /* -

4394 ** The DMS lock has not yet been taken on shm file pShmNode. Attempt to -

4395 ** take it now. Return SQLITE_OK if successful, or an SQLite error -

4396 ** code otherwise. -

4397 ** -

4398 ** If the DMS cannot be locked because this is a readonly_shm=1 -

4399 ** connection and no other process already holds a lock, return -

4400 ** SQLITE_READONLY_CANTINIT and set pShmNode->isUnlocked=1. -

4401 */ -

4402 static int unixLockSharedMemory(unixFile *pDbFd, unixShmNode *pShmNode){ -

4403 struct flock lock; -

4404 int rc = SQLITE_OK; -

4405 -

4406 /* Use F_GETLK to determine the locks other processes are holding -

4407 ** on the DMS byte. If it indicates that another process is holding -

4408 ** a SHARED lock, then this process may also take a SHARED lock -

4409 ** and proceed with opening the *-shm file. -

4410 ** -

4411 ** Or, if no other process is holding any lock, then this process -

4412 ** is the first to open it. In this case take an EXCLUSIVE lock on the -

4413 ** DMS byte and truncate the *-shm file to zero bytes in size. Then -

4414 ** downgrade to a SHARED lock on the DMS byte. -

4415 ** -

4416 ** If another process is holding an EXCLUSIVE lock on the DMS byte, -

4417 ** return SQLITE_BUSY to the caller (it will try again). An earlier -

4418 ** version of this code attempted the SHARED lock at this point. But -

4419 ** this introduced a subtle race condition: if the process holding -

4420 ** EXCLUSIVE failed just before truncating the *-shm file, then this -

4421 ** process might open and use the *-shm file without truncating it. -

4422 ** And if the *-shm file has been corrupted by a power failure or -

4423 ** system crash, the database itself may also become corrupt. */ -

4424 lock.l_whence = SEEK_SET; -

4425 lock.l_start = UNIX_SHM_DMS; -

4426 lock.l_len = 1; -

4427 lock.l_type = F_WRLCK; -

4428

if( osFcntl(pShmNode->h, F_GETLK, &lock)!=0 ) {

((int(*)(int,i... 5 , &lock)!=0

Description

TRUE

never evaluated

FALSE

evaluated 885 times by 49 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

0-885

4429 rc = SQLITE_IOERR_LOCK; -

4430

}else if( lock.l_type==F_UNLCK ){

never executed: end of block

lock.l_type== 2

Description

TRUE

evaluated 837 times by 20 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (104)
Self test (105)
Self test (28)
Self test (438)
Self test (79)
Self test (81)
Self test (83)
Self test (85)
Self test (90)
Self test (91)
Self test (92)
Self test (93)
Self test (94)
Self test (95)
Self test (96)
Self test (97)
Self test (98)
Self test (99)

FALSE

evaluated 48 times by 36 tests

Evaluated by:

Self test (103)
Self test (104)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
Self test (75)
Self test (76)
Self test (78)
Self test (79)
...

0-837

4431

if( pShmNode->isReadonly ){

pShmNode->isReadonly	Description
TRUE	evaluated 68 times by 2 tests Evaluated by: Self test (104) Self test (438)
FALSE	evaluated 769 times by 20 tests Evaluated by: Self test (100) Self test (101) Self test (104) Self test (105) Self test (28) Self test (438) Self test (79) Self test (81) Self test (83) Self test (85) Self test (90) Self test (91) Self test (92) Self test (93) Self test (94) Self test (95) Self test (96) Self test (97) Self test (98) Self test (99)

68-769

4432 pShmNode->isUnlocked = 1; -

4433 rc = SQLITE_READONLY_CANTINIT; -

4434

}else{

executed 68 times by 2 tests: end of block

Executed by:

Self test (104)
Self test (438)

4435 rc = unixShmSystemLock(pDbFd, F_WRLCK, UNIX_SHM_DMS, 1); -

4436

if( rc==SQLITE_OK && robust_ftruncate(pShmNode->h, 0) ){

rc==0	Description
TRUE	evaluated 769 times by 20 tests Evaluated by: Self test (100) Self test (101) Self test (104) Self test (105) Self test (28) Self test (438) Self test (79) Self test (81) Self test (83) Self test (85) Self test (90) Self test (91) Self test (92) Self test (93) Self test (94) Self test (95) Self test (96) Self test (97) Self test (98) Self test (99)
FALSE	never evaluated

robust_ftrunca...ShmNode->h, 0)	Description
TRUE	never evaluated
FALSE	evaluated 769 times by 20 tests Evaluated by: Self test (100) Self test (101) Self test (104) Self test (105) Self test (28) Self test (438) Self test (79) Self test (81) Self test (83) Self test (85) Self test (90) Self test (91) Self test (92) Self test (93) Self test (94) Self test (95) Self test (96) Self test (97) Self test (98) Self test (99)

0-769

4437 rc = unixLogError(SQLITE_IOERR_SHMOPEN,"ftruncate",pShmNode->zFilename); -

4438

}

never executed: end of block

4439

}

executed 769 times by 20 tests: end of block

Executed by:

Self test (100)
Self test (101)
Self test (104)
Self test (105)
Self test (28)
Self test (438)
Self test (79)
Self test (81)
Self test (83)
Self test (85)
Self test (90)
Self test (91)
Self test (92)
Self test (93)
Self test (94)
Self test (95)
Self test (96)
Self test (97)
Self test (98)
Self test (99)

769

4440

}else if( lock.l_type==F_WRLCK ){

lock.l_type== 1

Description

TRUE

never evaluated

FALSE

evaluated 48 times by 36 tests

Evaluated by:

Self test (103)
Self test (104)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
Self test (75)
Self test (76)
Self test (78)
Self test (79)
...

0-48

4441 rc = SQLITE_BUSY; -

4442

}

never executed: end of block

4443 -

4444

if( rc==SQLITE_OK ){

rc==0

Description

TRUE

evaluated 817 times by 49 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

FALSE

evaluated 68 times by 2 tests

Evaluated by:

Self test (104)
Self test (438)

68-817

4445 assert( lock.l_type==F_UNLCK || lock.l_type==F_RDLCK ); -

4446 rc = unixShmSystemLock(pDbFd, F_RDLCK, UNIX_SHM_DMS, 1); -

4447

}

executed 817 times by 49 tests: end of block

Executed by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

817

4448

return rc;

executed 885 times by 49 tests: return rc;

Executed by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

885

4449 } -

4450 -

4451 /* -

4452 ** Open a shared-memory area associated with open database file pDbFd. -

4453 ** This particular implementation uses mmapped files. -

4454 ** -

4455 ** The file used to implement shared-memory is in the same directory -

4456 ** as the open database file and has the same name as the open database -

4457 ** file with the "-shm" suffix added. For example, if the database file -

4458 ** is "/home/user1/config.db" then the file that is created and mmapped -

4459 ** for shared memory will be called "/home/user1/config.db-shm". -

4460 ** -

4461 ** Another approach to is to use files in /dev/shm or /dev/tmp or an -

4462 ** some other tmpfs mount. But if a file in a different directory -

4463 ** from the database file is used, then differing access permissions -

4464 ** or a chroot() might cause two different processes on the same -

4465 ** database to end up using different files for shared memory - -

4466 ** meaning that their memory would not really be shared - resulting -

4467 ** in database corruption. Nevertheless, this tmpfs file usage -

4468 ** can be enabled at compile-time using -DSQLITE_SHM_DIRECTORY="/dev/shm" -

4469 ** or the equivalent. The use of the SQLITE_SHM_DIRECTORY compile-time -

4470 ** option results in an incompatible build of SQLite; builds of SQLite -

4471 ** that with differing SQLITE_SHM_DIRECTORY settings attempt to use the -

4472 ** same database file at the same time, database corruption will likely -

4473 ** result. The SQLITE_SHM_DIRECTORY compile-time option is considered -

4474 ** "unsupported" and may go away in a future SQLite release. -

4475 ** -

4476 ** When opening a new shared-memory file, if no other instances of that -

4477 ** file are currently open, in this process or in other processes, then -

4478 ** the file must be truncated to zero length or have its header cleared. -

4479 ** -

4480 ** If the original database file (pDbFd) is using the "unix-excl" VFS -

4481 ** that means that an exclusive lock is held on the database file and -

4482 ** that no other processes are able to read or write the database. In -

4483 ** that case, we do not really need shared memory. No shared memory -

4484 ** file is created. The shared memory will be simulated with heap memory. -

4485 */ -

4486 static int unixOpenSharedMemory(unixFile *pDbFd){ -

4487 struct unixShm *p = 0; /* The connection to be opened */ -

4488 struct unixShmNode *pShmNode; /* The underlying mmapped file */ -

4489 int rc = SQLITE_OK; /* Result code */ -

4490 unixInodeInfo *pInode; /* The inode of fd */ -

4491 char *zShm; /* Name of the file used for SHM */ -

4492 int nShmFilename; /* Size of the SHM filename in bytes */ -

4493 -

4494 /* Allocate space for the new unixShm object. */ -

4495 p = sqlite3_malloc64( sizeof(*p) ); -

4496

if( p==0 ) return SQLITE_NOMEM_BKPT;

never executed: return 7;

p==0

Description

TRUE

never evaluated

FALSE

evaluated 1123 times by 49 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

0-1123

4497 memset(p, 0, sizeof(*p)); -

4498 assert( pDbFd->pShm==0 ); -

4499 -

4500 /* Check to see if a unixShmNode object already exists. Reuse an existing -

4501 ** one if present. Create a new one if necessary. -

4502 */ -

4503 assert( unixFileMutexNotheld(pDbFd) ); -

4504 unixEnterMutex(); -

4505 pInode = pDbFd->pInode; -

4506 pShmNode = pInode->pShmNode; -

4507

if( pShmNode==0 ){

pShmNode==0

Description

TRUE

evaluated 835 times by 49 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

FALSE

evaluated 288 times by 1 test

Evaluated by:

Self test (438)

288-835

4508 struct stat sStat; /* fstat() info for database file */ -

4509 #ifndef SQLITE_SHM_DIRECTORY -

4510 const char *zBasePath = pDbFd->zPath; -

4511 #endif -

4512 -

4513 /* Call fstat() to figure out the permissions on the database file. If -

4514 ** a new *-shm file is created, an attempt will be made to create it -

4515 ** with the same permissions. -

4516 */ -

4517

if( osFstat(pDbFd->h, &sStat) ){

((int(*)(int,s...Fd->h, &sStat)

Description

TRUE

never evaluated

FALSE

evaluated 835 times by 49 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

0-835

4518 rc = SQLITE_IOERR_FSTAT; -

4519

goto shm_open_err;

never executed: goto shm_open_err;

4520 } -

4521 -

4522 #ifdef SQLITE_SHM_DIRECTORY -

4523 nShmFilename = sizeof(SQLITE_SHM_DIRECTORY) + 31; -

4524 #else -

4525 nShmFilename = 6 + (int)strlen(zBasePath); -

4526 #endif -

4527 pShmNode = sqlite3_malloc64( sizeof(*pShmNode) + nShmFilename ); -

4528

if( pShmNode==0 ){

pShmNode==0

Description

TRUE

never evaluated

FALSE

evaluated 835 times by 49 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

0-835

4529 rc = SQLITE_NOMEM_BKPT; -

4530

goto shm_open_err;

never executed: goto shm_open_err;

4531 } -

4532 memset(pShmNode, 0, sizeof(*pShmNode)+nShmFilename); -

4533 zShm = pShmNode->zFilename = (char*)&pShmNode[1]; -

4534 #ifdef SQLITE_SHM_DIRECTORY -

4535 sqlite3_snprintf(nShmFilename, zShm, -

4536 SQLITE_SHM_DIRECTORY "/sqlite-shm-%x-%x", -

4537 (u32)sStat.st_ino, (u32)sStat.st_dev); -

4538 #else -

4539 sqlite3_snprintf(nShmFilename, zShm, "%s-shm", zBasePath); -

4540 sqlite3FileSuffix3(pDbFd->zPath, zShm); -

4541 #endif -

4542 pShmNode->h = -1; -

4543 pDbFd->pInode->pShmNode = pShmNode; -

4544 pShmNode->pInode = pDbFd->pInode; -

4545

if( sqlite3GlobalConfig.bCoreMutex ){

sqlite3Config.bCoreMutex

Description

TRUE

evaluated 835 times by 49 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

FALSE

never evaluated

0-835

4546 pShmNode->mutex = sqlite3_mutex_alloc(SQLITE_MUTEX_FAST); -

4547

if( pShmNode->mutex==0 ){

pShmNode->mutex==0

Description

TRUE

never evaluated

FALSE

evaluated 835 times by 49 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

0-835

4548 rc = SQLITE_NOMEM_BKPT; -

4549

goto shm_open_err;

never executed: goto shm_open_err;

4550 } -

4551

}

executed 835 times by 49 tests: end of block

Executed by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

835

4552 -

4553

if( pInode->bProcessLock==0 ){

pInode->bProcessLock==0

Description

TRUE

evaluated 833 times by 49 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

FALSE

evaluated 2 times by 1 test

Evaluated by:

Self test (438)

2-833

4554

if( 0==sqlite3_uri_boolean(pDbFd->zPath, "readonly_shm", 0) ){

0==sqlite3_uri...donly_shm", 0)

Description

TRUE

evaluated 812 times by 48 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
Self test (75)
...

FALSE

evaluated 21 times by 3 tests

Evaluated by:

Self test (103)
Self test (104)
Self test (438)

21-812

4555 pShmNode->h = robust_open(zShm, O_RDWR|O_CREAT, (sStat.st_mode&0777)); -

4556

}

executed 812 times by 48 tests: end of block

Executed by:

Self test (100)
Self test (101)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
Self test (75)
...

812

4557

if( pShmNode->h<0 ){

pShmNode->h<0

Description

TRUE

evaluated 26 times by 3 tests

Evaluated by:

Self test (103)
Self test (104)
Self test (438)

FALSE

evaluated 807 times by 48 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
Self test (75)
...

26-807

4558 pShmNode->h = robust_open(zShm, O_RDONLY, (sStat.st_mode&0777)); -

4559

if( pShmNode->h<0 ){

pShmNode->h<0	Description
TRUE	evaluated 5 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 21 times by 3 tests Evaluated by: Self test (103) Self test (104) Self test (438)

5-21

4560 rc = unixLogError(SQLITE_CANTOPEN_BKPT, "open", zShm); -

4561

goto shm_open_err;

executed 5 times by 1 test: goto shm_open_err;

Executed by:

Self test (438)

4562 } -

4563 pShmNode->isReadonly = 1; -

4564

}

executed 21 times by 3 tests: end of block

Executed by:

Self test (103)
Self test (104)
Self test (438)

4565 -

4566 /* If this process is running as root, make sure that the SHM file -

4567 ** is owned by the same user that owns the original database. Otherwise, -

4568 ** the original owner will not be able to connect. -

4569 */ -

4570 robustFchown(pShmNode->h, sStat.st_uid, sStat.st_gid); -

4571 -

4572 rc = unixLockSharedMemory(pDbFd, pShmNode); -

4573

if( rc!=SQLITE_OK && rc!=SQLITE_READONLY_CANTINIT ) goto shm_open_err;

never executed: goto shm_open_err;

rc!=0

Description

TRUE

evaluated 17 times by 2 tests

Evaluated by:

Self test (104)
Self test (438)

FALSE

evaluated 811 times by 49 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

rc!=(8 \| (5<<8))	Description
TRUE	never evaluated
FALSE	evaluated 17 times by 2 tests Evaluated by: Self test (104) Self test (438)

0-811

4574

}

executed 828 times by 49 tests: end of block

Executed by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

828

4575

}

executed 830 times by 49 tests: end of block

Executed by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

830

4576 -

4577 /* Make the new connection a child of the unixShmNode */ -

4578 p->pShmNode = pShmNode; -

4579 #ifdef SQLITE_DEBUG -

4580 p->id = pShmNode->nextShmId++; -

4581 #endif -

4582 pShmNode->nRef++; -

4583 pDbFd->pShm = p; -

4584 unixLeaveMutex(); -

4585 -

4586 /* The reference count on pShmNode has already been incremented under -

4587 ** the cover of the unixEnterMutex() mutex and the pointer from the -

4588 ** new (struct unixShm) object to the pShmNode has been set. All that is -

4589 ** left to do is to link the new object into the linked list starting -

4590 ** at pShmNode->pFirst. This must be done while holding the pShmNode->mutex -

4591 ** mutex. -

4592 */ -

4593 sqlite3_mutex_enter(pShmNode->mutex); -

4594 p->pNext = pShmNode->pFirst; -

4595 pShmNode->pFirst = p; -

4596 sqlite3_mutex_leave(pShmNode->mutex); -

4597

return rc;

executed 1118 times by 49 tests: return rc;

Executed by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

1118

4598 -

4599 /* Jump here on any error */ -

4600 shm_open_err: -

4601 unixShmPurge(pDbFd); /* This call frees pShmNode if required */ -

4602 sqlite3_free(p); -

4603 unixLeaveMutex(); -

4604

return rc;

executed 5 times by 1 test: return rc;

Executed by:

Self test (438)

4605 } -

4606 -

4607 /* -

4608 ** This function is called to obtain a pointer to region iRegion of the -

4609 ** shared-memory associated with the database file fd. Shared-memory regions -

4610 ** are numbered starting from zero. Each shared-memory region is szRegion -

4611 ** bytes in size. -

4612 ** -

4613 ** If an error occurs, an error code is returned and *pp is set to NULL. -

4614 ** -

4615 ** Otherwise, if the bExtend parameter is 0 and the requested shared-memory -

4616 ** region has not been allocated (by any client, including one running in a -

4617 ** separate process), then *pp is set to NULL and SQLITE_OK returned. If -

4618 ** bExtend is non-zero and the requested shared-memory region has not yet -

4619 ** been allocated, it is allocated by this function. -

4620 ** -

4621 ** If the shared-memory region has already been allocated or is allocated by -

4622 ** this call as described above, then it is mapped into this processes -

4623 ** address space (if it is not already), *pp is set to point to the mapped -

4624 ** memory and SQLITE_OK returned. -

4625 */ -

4626 static int unixShmMap( -

4627 sqlite3_file *fd, /* Handle open on database file */ -

4628 int iRegion, /* Region to retrieve */ -

4629 int szRegion, /* Size of regions */ -

4630 int bExtend, /* True to extend file if necessary */ -

4631 void volatile **pp /* OUT: Mapped memory */ -

4632 ){ -

4633 unixFile *pDbFd = (unixFile*)fd; -

4634 unixShm *p; -

4635 unixShmNode *pShmNode; -

4636 int rc = SQLITE_OK; -

4637 int nShmPerMap = unixShmRegionPerMap(); -

4638 int nReqRegion; -

4639 -

4640 /* If the shared-memory file has not yet been opened, open it now. */ -

4641

if( pDbFd->pShm==0 ){

pDbFd->pShm==0

Description

TRUE

evaluated 1123 times by 49 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

FALSE

evaluated 982 times by 22 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (104)
Self test (105)
Self test (28)
Self test (438)
Self test (64)
Self test (74)
Self test (79)
Self test (81)
Self test (83)
Self test (85)
Self test (90)
Self test (91)
Self test (92)
Self test (93)
Self test (94)
Self test (95)
Self test (96)
Self test (97)
Self test (98)
Self test (99)

982-1123

4642 rc = unixOpenSharedMemory(pDbFd); -

4643

if( rc!=SQLITE_OK ) return rc;

executed 22 times by 2 tests: return rc;

Executed by:

Self test (104)
Self test (438)

rc!=0

Description

TRUE

evaluated 22 times by 2 tests

Evaluated by:

Self test (104)
Self test (438)

FALSE

evaluated 1101 times by 49 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

22-1101

4644

}

executed 1101 times by 49 tests: end of block

Executed by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

1101

4645 -

4646 p = pDbFd->pShm; -

4647 pShmNode = p->pShmNode; -

4648 sqlite3_mutex_enter(pShmNode->mutex); -

4649

if( pShmNode->isUnlocked ){

pShmNode->isUnlocked

Description

TRUE

evaluated 57 times by 2 tests

Evaluated by:

Self test (104)
Self test (438)

FALSE

evaluated 2026 times by 49 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

57-2026

4650 rc = unixLockSharedMemory(pDbFd, pShmNode); -

4651

if( rc!=SQLITE_OK ) goto shmpage_out;

executed 51 times by 2 tests: goto shmpage_out;

Executed by:

Self test (104)
Self test (438)

rc!=0	Description
TRUE	evaluated 51 times by 2 tests Evaluated by: Self test (104) Self test (438)
FALSE	evaluated 6 times by 2 tests Evaluated by: Self test (104) Self test (438)

6-51

4652 pShmNode->isUnlocked = 0; -

4653

}

executed 6 times by 2 tests: end of block

Executed by:

Self test (104)
Self test (438)

4654 assert( szRegion==pShmNode->szRegion || pShmNode->nRegion==0 ); -

4655 assert( pShmNode->pInode==pDbFd->pInode ); -

4656 assert( pShmNode->h>=0 || pDbFd->pInode->bProcessLock==1 ); -

4657 assert( pShmNode->h<0 || pDbFd->pInode->bProcessLock==0 ); -

4658 -

4659 /* Minimum number of regions required to be mapped. */ -

4660 nReqRegion = ((iRegion+nShmPerMap) / nShmPerMap) * nShmPerMap; -

4661 -

4662

if( pShmNode->nRegion<nReqRegion ){

pShmNode->nRegion<nReqRegion

Description

TRUE

evaluated 1667 times by 49 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

FALSE

evaluated 365 times by 2 tests

Evaluated by:

Self test (438)
Self test (74)

365-1667

4663 char **apNew; /* New apRegion[] array */ -

4664 int nByte = nReqRegion*szRegion; /* Minimum required file size */ -

4665 struct stat sStat; /* Used by fstat() */ -

4666 -

4667 pShmNode->szRegion = szRegion; -

4668 -

4669

if( pShmNode->h>=0 ){

pShmNode->h>=0

Description

TRUE

evaluated 1665 times by 49 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

FALSE

evaluated 2 times by 1 test

Evaluated by:

Self test (438)

2-1665

4670 /* The requested region is not mapped into this processes address space. -

4671 ** Check to see if it has been allocated (i.e. if the wal-index file is -

4672 ** large enough to contain the requested region). -

4673 */ -

4674

if( osFstat(pShmNode->h, &sStat) ){

((int(*)(int,s...de->h, &sStat)

Description

TRUE

never evaluated

FALSE

evaluated 1665 times by 49 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

0-1665

4675 rc = SQLITE_IOERR_SHMSIZE; -

4676

goto shmpage_out;

never executed: goto shmpage_out;

4677 } -

4678 -

4679

if( sStat.st_size<nByte ){

sStat.st_size<nByte

Description

TRUE

evaluated 1612 times by 21 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (104)
Self test (105)
Self test (28)
Self test (438)
Self test (64)
Self test (79)
Self test (81)
Self test (83)
Self test (85)
Self test (90)
Self test (91)
Self test (92)
Self test (93)
Self test (94)
Self test (95)
Self test (96)
Self test (97)
Self test (98)
Self test (99)

FALSE

evaluated 53 times by 36 tests

Evaluated by:

Self test (103)
Self test (104)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
Self test (75)
Self test (76)
Self test (78)
Self test (79)
...

53-1612

4680 /* The requested memory region does not exist. If bExtend is set to -

4681 ** false, exit early. *pp will be set to NULL and SQLITE_OK returned. -

4682 */ -

4683

if( !bExtend ){

!bExtend	Description
TRUE	evaluated 769 times by 20 tests Evaluated by: Self test (100) Self test (101) Self test (104) Self test (105) Self test (28) Self test (438) Self test (79) Self test (81) Self test (83) Self test (85) Self test (90) Self test (91) Self test (92) Self test (93) Self test (94) Self test (95) Self test (96) Self test (97) Self test (98) Self test (99)
FALSE	evaluated 843 times by 21 tests Evaluated by: Self test (100) Self test (101) Self test (104) Self test (105) Self test (28) Self test (438) Self test (64) Self test (79) Self test (81) Self test (83) Self test (85) Self test (90) Self test (91) Self test (92) Self test (93) Self test (94) Self test (95) Self test (96) Self test (97) Self test (98) Self test (99)

769-843

4684

goto shmpage_out;

executed 769 times by 20 tests: goto shmpage_out;

Executed by:

Self test (100)
Self test (101)
Self test (104)
Self test (105)
Self test (28)
Self test (438)
Self test (79)
Self test (81)
Self test (83)
Self test (85)
Self test (90)
Self test (91)
Self test (92)
Self test (93)
Self test (94)
Self test (95)
Self test (96)
Self test (97)
Self test (98)
Self test (99)

769

4685 } -

4686 -

4687 /* Alternatively, if bExtend is true, extend the file. Do this by -

4688 ** writing a single byte to the end of each (OS) page being -

4689 ** allocated or extended. Technically, we need only write to the -

4690 ** last page in order to extend the file. But writing to all new -

4691 ** pages forces the OS to allocate them immediately, which reduces -

4692 ** the chances of SIGBUS while accessing the mapped region later on. -

4693 */ -

4694 else{ -

4695 static const int pgsz = 4096; -

4696 int iPg; -

4697 -

4698 /* Write to the last byte of each newly allocated or extended page */ -

4699 assert( (nByte % pgsz)==0 ); -

4700

for(iPg=(sStat.st_size/pgsz); iPg<(nByte/pgsz); iPg++){

iPg<(nByte/pgsz)	Description
TRUE	evaluated 6760 times by 21 tests Evaluated by: Self test (100) Self test (101) Self test (104) Self test (105) Self test (28) Self test (438) Self test (64) Self test (79) Self test (81) Self test (83) Self test (85) Self test (90) Self test (91) Self test (92) Self test (93) Self test (94) Self test (95) Self test (96) Self test (97) Self test (98) Self test (99)
FALSE	evaluated 843 times by 21 tests Evaluated by: Self test (100) Self test (101) Self test (104) Self test (105) Self test (28) Self test (438) Self test (64) Self test (79) Self test (81) Self test (83) Self test (85) Self test (90) Self test (91) Self test (92) Self test (93) Self test (94) Self test (95) Self test (96) Self test (97) Self test (98) Self test (99)

843-6760

4701 int x = 0; -

4702

if( seekAndWriteFd(pShmNode->h, iPg*pgsz + pgsz-1, "", 1, &x)!=1 ){

seekAndWriteFd... "", 1, &x)!=1	Description
TRUE	never evaluated
FALSE	evaluated 6760 times by 21 tests Evaluated by: Self test (100) Self test (101) Self test (104) Self test (105) Self test (28) Self test (438) Self test (64) Self test (79) Self test (81) Self test (83) Self test (85) Self test (90) Self test (91) Self test (92) Self test (93) Self test (94) Self test (95) Self test (96) Self test (97) Self test (98) Self test (99)

0-6760

4703 const char *zFile = pShmNode->zFilename; -

4704 rc = unixLogError(SQLITE_IOERR_SHMSIZE, "write", zFile); -

4705

goto shmpage_out;

never executed: goto shmpage_out;

4706 } -

4707

}

executed 6760 times by 21 tests: end of block

Executed by:

Self test (100)
Self test (101)
Self test (104)
Self test (105)
Self test (28)
Self test (438)
Self test (64)
Self test (79)
Self test (81)
Self test (83)
Self test (85)
Self test (90)
Self test (91)
Self test (92)
Self test (93)
Self test (94)
Self test (95)
Self test (96)
Self test (97)
Self test (98)
Self test (99)

6760

4708

}

executed 843 times by 21 tests: end of block

Executed by:

Self test (100)
Self test (101)
Self test (104)
Self test (105)
Self test (28)
Self test (438)
Self test (64)
Self test (79)
Self test (81)
Self test (83)
Self test (85)
Self test (90)
Self test (91)
Self test (92)
Self test (93)
Self test (94)
Self test (95)
Self test (96)
Self test (97)
Self test (98)
Self test (99)

843

4709 } -

4710

}

executed 896 times by 49 tests: end of block

Executed by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

896

4711 -

4712 /* Map the requested memory region into this processes address space. */ -

4713 apNew = (char **)sqlite3_realloc( -

4714 pShmNode->apRegion, nReqRegion*sizeof(char *) -

4715 ); -

4716

if( !apNew ){

!apNew

Description

TRUE

never evaluated

FALSE

evaluated 898 times by 49 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

0-898

4717 rc = SQLITE_IOERR_NOMEM_BKPT; -

4718

goto shmpage_out;

never executed: goto shmpage_out;

4719 } -

4720 pShmNode->apRegion = apNew; -

4721

while( pShmNode->nRegion<nReqRegion ){

pShmNode->nRegion<nReqRegion

Description

TRUE

evaluated 901 times by 49 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

FALSE

evaluated 898 times by 49 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

898-901

4722 int nMap = szRegion*nShmPerMap; -

4723 int i; -

4724 void *pMem; -

4725

if( pShmNode->h>=0 ){

pShmNode->h>=0

Description

TRUE

evaluated 899 times by 49 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

FALSE

evaluated 2 times by 1 test

Evaluated by:

Self test (438)

2-899

4726 pMem = osMmap(0, nMap, -

4727

pShmNode->isReadonly ? PROT_READ : PROT_READ|PROT_WRITE,

pShmNode->isReadonly

Description

TRUE

evaluated 10 times by 3 tests

Evaluated by:

Self test (103)
Self test (104)
Self test (438)

FALSE

evaluated 889 times by 48 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
Self test (75)
...

10-889

4728 MAP_SHARED, pShmNode->h, szRegion*(i64)pShmNode->nRegion -

4729 ); -

4730

if( pMem==MAP_FAILED ){

pMem== ((void *) -1)

Description

TRUE

never evaluated

FALSE

evaluated 899 times by 49 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

0-899

4731 rc = unixLogError(SQLITE_IOERR_SHMMAP, "mmap", pShmNode->zFilename); -

4732

goto shmpage_out;

never executed: goto shmpage_out;

4733 } -

4734

}else{

executed 899 times by 49 tests: end of block

Executed by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

899

4735 pMem = sqlite3_malloc64(szRegion); -

4736

if( pMem==0 ){

pMem==0	Description
TRUE	never evaluated
FALSE	evaluated 2 times by 1 test Evaluated by: Self test (438)

0-2

4737 rc = SQLITE_NOMEM_BKPT; -

4738

goto shmpage_out;

never executed: goto shmpage_out;

4739 } -

4740 memset(pMem, 0, szRegion); -

4741

}

executed 2 times by 1 test: end of block

Executed by:

Self test (438)

4742 -

4743

for(i=0; i<nShmPerMap; i++){

i<nShmPerMap

Description

TRUE

evaluated 903 times by 49 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

FALSE

evaluated 901 times by 49 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

901-903

4744 pShmNode->apRegion[pShmNode->nRegion+i] = &((char*)pMem)[szRegion*i]; -

4745

}

executed 903 times by 49 tests: end of block

Executed by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

903

4746 pShmNode->nRegion += nShmPerMap; -

4747

}

executed 901 times by 49 tests: end of block

Executed by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

901

4748

}

executed 898 times by 49 tests: end of block

Executed by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

898

4749 -

4750

shmpage_out:

code before this statement executed 1263 times by 49 tests: shmpage_out:

Executed by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

1263

4751

if( pShmNode->nRegion>iRegion ){

pShmNode->nRegion>iRegion

Description

TRUE

evaluated 1263 times by 49 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

FALSE

evaluated 820 times by 20 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (104)
Self test (105)
Self test (28)
Self test (438)
Self test (79)
Self test (81)
Self test (83)
Self test (85)
Self test (90)
Self test (91)
Self test (92)
Self test (93)
Self test (94)
Self test (95)
Self test (96)
Self test (97)
Self test (98)
Self test (99)

820-1263

4752 *pp = pShmNode->apRegion[iRegion]; -

4753

}else{

executed 1263 times by 49 tests: end of block

Executed by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

1263

4754 *pp = 0; -

4755

}

executed 820 times by 20 tests: end of block

Executed by:

Self test (100)
Self test (101)
Self test (104)
Self test (105)
Self test (28)
Self test (438)
Self test (79)
Self test (81)
Self test (83)
Self test (85)
Self test (90)
Self test (91)
Self test (92)
Self test (93)
Self test (94)
Self test (95)
Self test (96)
Self test (97)
Self test (98)
Self test (99)

820

4756

if( pShmNode->isReadonly && rc==SQLITE_OK ) rc = SQLITE_READONLY;

executed 13 times by 3 tests: rc = 8;

Executed by:

Self test (103)
Self test (104)
Self test (438)

pShmNode->isReadonly

Description

TRUE

evaluated 64 times by 3 tests

Evaluated by:

Self test (103)
Self test (104)
Self test (438)

FALSE

evaluated 2019 times by 48 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
Self test (75)
...

rc==0	Description
TRUE	evaluated 13 times by 3 tests Evaluated by: Self test (103) Self test (104) Self test (438)
FALSE	evaluated 51 times by 2 tests Evaluated by: Self test (104) Self test (438)

13-2019

4757 sqlite3_mutex_leave(pShmNode->mutex); -

4758

return rc;

executed 2083 times by 49 tests: return rc;

Executed by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

2083

4759 } -

4760 -

4761 /* -

4762 ** Change the lock state for a shared-memory segment. -

4763 ** -

4764 ** Note that the relationship between SHAREd and EXCLUSIVE locks is a little -

4765 ** different here than in posix. In xShmLock(), one can go from unlocked -

4766 ** to shared and back or from unlocked to exclusive and back. But one may -

4767 ** not go from shared to exclusive or from exclusive to shared. -

4768 */ -

4769 static int unixShmLock( -

4770 sqlite3_file *fd, /* Database file holding the shared memory */ -

4771 int ofst, /* First lock to acquire or release */ -

4772 int n, /* Number of locks to acquire or release */ -

4773 int flags /* What to do with the lock */ -

4774 ){ -

4775 unixFile *pDbFd = (unixFile*)fd; /* Connection holding shared memory */ -

4776 unixShm *p = pDbFd->pShm; /* The shared memory being locked */ -

4777 unixShm *pX; /* For looping over all siblings */ -

4778 unixShmNode *pShmNode = p->pShmNode; /* The underlying file iNode */ -

4779 int rc = SQLITE_OK; /* Result code */ -

4780 u16 mask; /* Mask of locks to take or release */ -

4781 -

4782 assert( pShmNode==pDbFd->pInode->pShmNode ); -

4783 assert( pShmNode->pInode==pDbFd->pInode ); -

4784 assert( ofst>=0 && ofst+n<=SQLITE_SHM_NLOCK ); -

4785 assert( n>=1 ); -

4786 assert( flags==(SQLITE_SHM_LOCK | SQLITE_SHM_SHARED) -

4787 || flags==(SQLITE_SHM_LOCK | SQLITE_SHM_EXCLUSIVE) -

4788 || flags==(SQLITE_SHM_UNLOCK | SQLITE_SHM_SHARED) -

4789 || flags==(SQLITE_SHM_UNLOCK | SQLITE_SHM_EXCLUSIVE) ); -

4790 assert( n==1 || (flags & SQLITE_SHM_EXCLUSIVE)!=0 ); -

4791 assert( pShmNode->h>=0 || pDbFd->pInode->bProcessLock==1 ); -

4792 assert( pShmNode->h<0 || pDbFd->pInode->bProcessLock==0 ); -

4793 -

4794 mask = (1<<(ofst+n)) - (1<<ofst); -

4795 assert( n>1 || mask==(1<<ofst) ); -

4796 sqlite3_mutex_enter(pShmNode->mutex); -

4797

if( flags & SQLITE_SHM_UNLOCK ){

flags & 1

Description

TRUE

evaluated 190525 times by 49 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

FALSE

evaluated 195298 times by 49 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

190525-195298

4798 u16 allMask = 0; /* Mask of locks held by siblings */ -

4799 -

4800 /* See if any siblings hold this same lock */ -

4801

for(pX=pShmNode->pFirst; pX; pX=pX->pNext){

Description

TRUE

evaluated 205499 times by 49 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

FALSE

evaluated 190525 times by 49 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

190525-205499

4802

if( pX==p ) continue;

executed 190525 times by 49 tests: continue;

Executed by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

pX==p

Description

TRUE

evaluated 190525 times by 49 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

FALSE

evaluated 14974 times by 1 test

Evaluated by:

Self test (438)

14974-190525

4803 assert( (pX->exclMask & (p->exclMask|p->sharedMask))==0 ); -

4804 allMask |= pX->sharedMask; -

4805

}

executed 14974 times by 1 test: end of block

Executed by:

Self test (438)

14974

4806 -

4807 /* Unlock the system-level locks */ -

4808

if( (mask & allMask)==0 ){

(mask & allMask)==0

Description

TRUE

evaluated 190242 times by 49 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

FALSE

evaluated 283 times by 1 test

Evaluated by:

Self test (438)

283-190242

4809 rc = unixShmSystemLock(pDbFd, F_UNLCK, ofst+UNIX_SHM_BASE, n); -

4810

}else{

executed 190242 times by 49 tests: end of block

Executed by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

190242

4811 rc = SQLITE_OK; -

4812

}

executed 283 times by 1 test: end of block

Executed by:

Self test (438)

283

4813 -

4814 /* Undo the local locks */ -

4815

if( rc==SQLITE_OK ){

rc==0

Description

TRUE

evaluated 190525 times by 49 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

FALSE

never evaluated

0-190525

4816 p->exclMask &= ~mask; -

4817 p->sharedMask &= ~mask; -

4818

}

executed 190525 times by 49 tests: end of block

Executed by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

190525

4819

}else if( flags & SQLITE_SHM_SHARED ){

executed 190525 times by 49 tests: end of block

Executed by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

flags & 4

Description

TRUE

evaluated 62211 times by 49 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

FALSE

evaluated 133087 times by 46 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
Self test (75)
...

62211-190525

4820 u16 allShared = 0; /* Union of locks held by connections other than "p" */ -

4821 -

4822 /* Find out which shared locks are already held by sibling connections. -

4823 ** If any sibling already holds an exclusive lock, go ahead and return -

4824 ** SQLITE_BUSY. -

4825 */ -

4826

for(pX=pShmNode->pFirst; pX; pX=pX->pNext){

Description

TRUE

evaluated 69031 times by 49 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

FALSE

evaluated 62203 times by 49 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

62203-69031

4827

if( (pX->exclMask & mask)!=0 ){

(pX->exclMask & mask)!=0

Description

TRUE

evaluated 8 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 69023 times by 49 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

8-69023

4828 rc = SQLITE_BUSY; -

4829

break;

executed 8 times by 1 test: break;

Executed by:

Self test (438)

4830 } -

4831 allShared |= pX->sharedMask; -

4832

}

executed 69023 times by 49 tests: end of block

Executed by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

69023

4833 -

4834 /* Get shared locks at the system level, if necessary */ -

4835

if( rc==SQLITE_OK ){

rc==0

Description

TRUE

evaluated 62203 times by 49 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

FALSE

evaluated 8 times by 1 test

Evaluated by:

Self test (438)

8-62203

4836

if( (allShared & mask)==0 ){

(allShared & mask)==0

Description

TRUE

evaluated 61921 times by 49 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

FALSE

evaluated 282 times by 1 test

Evaluated by:

Self test (438)

282-61921

4837 rc = unixShmSystemLock(pDbFd, F_RDLCK, ofst+UNIX_SHM_BASE, n); -

4838

}else{

executed 61921 times by 49 tests: end of block

Executed by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

61921

4839 rc = SQLITE_OK; -

4840

}

executed 282 times by 1 test: end of block

Executed by:

Self test (438)

282

4841 } -

4842 -

4843 /* Get the local shared locks */ -

4844

if( rc==SQLITE_OK ){

rc==0

Description

TRUE

evaluated 62200 times by 49 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

FALSE

evaluated 11 times by 4 tests

Evaluated by:

Self test (104)
Self test (438)
Self test (50)
Self test (51)

11-62200

4845 p->sharedMask |= mask; -

4846

}

executed 62200 times by 49 tests: end of block

Executed by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

62200

4847

}else{

executed 62211 times by 49 tests: end of block

Executed by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

62211

4848 /* Make sure no sibling connections hold locks that will block this -

4849 ** lock. If any do, return SQLITE_BUSY right away. -

4850 */ -

4851

for(pX=pShmNode->pFirst; pX; pX=pX->pNext){

Description

TRUE

evaluated 151811 times by 46 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
Self test (75)
...

FALSE

evaluated 128474 times by 46 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
Self test (75)
...

128474-151811

4852

if( (pX->exclMask & mask)!=0 || (pX->sharedMask & mask)!=0 ){

(pX->exclMask & mask)!=0

Description

TRUE

evaluated 71 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 151740 times by 46 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
Self test (75)
...

(pX->sharedMask & mask)!=0

Description

TRUE

evaluated 4542 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 147198 times by 46 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
Self test (75)
...

71-151740

4853 rc = SQLITE_BUSY; -

4854

break;

executed 4613 times by 1 test: break;

Executed by:

Self test (438)

4613

4855 } -

4856

}

executed 147198 times by 46 tests: end of block

Executed by:

Self test (100)
Self test (101)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
Self test (75)
...

147198

4857 -

4858 /* Get the exclusive locks at the system level. Then if successful -

4859 ** also mark the local connection as being locked. -

4860 */ -

4861

if( rc==SQLITE_OK ){

rc==0

Description

TRUE

evaluated 128474 times by 46 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
Self test (75)
...

FALSE

evaluated 4613 times by 1 test

Evaluated by:

Self test (438)

4613-128474

4862 rc = unixShmSystemLock(pDbFd, F_WRLCK, ofst+UNIX_SHM_BASE, n); -

4863

if( rc==SQLITE_OK ){

rc==0

Description

TRUE

evaluated 128323 times by 46 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
Self test (75)
...

FALSE

evaluated 151 times by 9 tests

Evaluated by:

Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (72)
Self test (73)
Self test (81)
Self test (83)

151-128323

4864 assert( (p->sharedMask & mask)==0 ); -

4865 p->exclMask |= mask; -

4866

}

executed 128323 times by 46 tests: end of block

Executed by:

Self test (100)
Self test (101)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
Self test (75)
...

128323

4867

}

executed 128474 times by 46 tests: end of block

Executed by:

Self test (100)
Self test (101)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
Self test (75)
...

128474

4868

}

executed 133087 times by 46 tests: end of block

Executed by:

Self test (100)
Self test (101)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
Self test (75)
...

133087

4869 sqlite3_mutex_leave(pShmNode->mutex); -

4870

OSTRACE(("SHM-LOCK shmid-%d, pid-%d got %03x,%03x\n",

never executed: sqlite3DebugPrintf ("SHM-LOCK shmid-%d, pid-%d got %03x,%03x\n", p->id, (pid_t)getpid(), p->sharedMask, p->exclMask) ;

sqlite3OSTrace

Description

TRUE

never evaluated

FALSE

evaluated 385823 times by 49 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

0-385823

4871

p->id, osGetpid(0), p->sharedMask, p->exclMask));

never executed: sqlite3DebugPrintf ("SHM-LOCK shmid-%d, pid-%d got %03x,%03x\n", p->id, (pid_t)getpid(), p->sharedMask, p->exclMask) ;

4872

return rc;

executed 385823 times by 49 tests: return rc;

Executed by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

385823

4873 } -

4874 -

4875 /* -

4876 ** Implement a memory barrier or memory fence on shared memory. -

4877 ** -

4878 ** All loads and stores begun before the barrier must complete before -

4879 ** any load or store begun after the barrier. -

4880 */ -

4881 static void unixShmBarrier( -

4882 sqlite3_file *fd /* Database file holding the shared memory */ -

4883 ){ -

4884 UNUSED_PARAMETER(fd); -

4885 sqlite3MemoryBarrier(); /* compiler-defined memory barrier */ -

4886 assert( fd->pMethods->xLock==nolockLock -

4887 || unixFileMutexNotheld((unixFile*)fd) -

4888 ); -

4889 unixEnterMutex(); /* Also mutex, for redundancy */ -

4890 unixLeaveMutex(); -

4891

}

executed 187057 times by 49 tests: end of block

Executed by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

187057

4892 -

4893 /* -

4894 ** Close a connection to shared-memory. Delete the underlying -

4895 ** storage if deleteFlag is true. -

4896 ** -

4897 ** If there is no shared memory associated with the connection then this -

4898 ** routine is a harmless no-op. -

4899 */ -

4900 static int unixShmUnmap( -

4901 sqlite3_file *fd, /* The underlying database file */ -

4902 int deleteFlag /* Delete shared-memory if true */ -

4903 ){ -

4904 unixShm *p; /* The connection to be closed */ -

4905 unixShmNode *pShmNode; /* The underlying shared-memory file */ -

4906 unixShm **pp; /* For looping over sibling connections */ -

4907 unixFile *pDbFd; /* The underlying database file */ -

4908 -

4909 pDbFd = (unixFile*)fd; -

4910 p = pDbFd->pShm; -

4911

if( p==0 ) return SQLITE_OK;

executed 4 times by 1 test: return 0;

Executed by:

Self test (438)

p==0

Description

TRUE

evaluated 4 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 1107 times by 38 tests

Evaluated by:

Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
Self test (75)
Self test (76)
...

4-1107

4912 pShmNode = p->pShmNode; -

4913 -

4914 assert( pShmNode==pDbFd->pInode->pShmNode ); -

4915 assert( pShmNode->pInode==pDbFd->pInode ); -

4916 -

4917 /* Remove connection p from the set of connections associated -

4918 ** with pShmNode */ -

4919 sqlite3_mutex_enter(pShmNode->mutex); -

4920

for(pp=&pShmNode->pFirst; (*pp)!=p; pp = &(*pp)->pNext){}

executed 1312 times by 1 test: end of block

Executed by:

Self test (438)

(*pp)!=p

Description

TRUE

evaluated 1312 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 1107 times by 38 tests

Evaluated by:

Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
Self test (75)
Self test (76)
...

1107-1312

4921 *pp = p->pNext; -

4922 -

4923 /* Free the connection p */ -

4924 sqlite3_free(p); -

4925 pDbFd->pShm = 0; -

4926 sqlite3_mutex_leave(pShmNode->mutex); -

4927 -

4928 /* If pShmNode->nRef has reached 0, then close the underlying -

4929 ** shared-memory file, too */ -

4930 assert( unixFileMutexNotheld(pDbFd) ); -

4931 unixEnterMutex(); -

4932 assert( pShmNode->nRef>0 ); -

4933 pShmNode->nRef--; -

4934

if( pShmNode->nRef==0 ){

pShmNode->nRef==0

Description

TRUE

evaluated 819 times by 38 tests

Evaluated by:

Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
Self test (75)
Self test (76)
...

FALSE

evaluated 288 times by 1 test

Evaluated by:

Self test (438)

288-819

4935

if( deleteFlag && pShmNode->h>=0 ){

deleteFlag

Description

TRUE

evaluated 717 times by 10 tests

Evaluated by:

Self test (101)
Self test (104)
Self test (105)
Self test (438)
Self test (73)
Self test (75)
Self test (80)
Self test (82)
Self test (85)
Self test (90)

FALSE

evaluated 102 times by 35 tests

Evaluated by:

Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (74)
Self test (75)
Self test (76)
Self test (78)
...

pShmNode->h>=0	Description
TRUE	evaluated 715 times by 10 tests Evaluated by: Self test (101) Self test (104) Self test (105) Self test (438) Self test (73) Self test (75) Self test (80) Self test (82) Self test (85) Self test (90)
FALSE	evaluated 2 times by 1 test Evaluated by: Self test (438)

2-717

4936 osUnlink(pShmNode->zFilename); -

4937

}

executed 715 times by 10 tests: end of block

Executed by:

Self test (101)
Self test (104)
Self test (105)
Self test (438)
Self test (73)
Self test (75)
Self test (80)
Self test (82)
Self test (85)
Self test (90)

715

4938 unixShmPurge(pDbFd); -

4939

}

executed 819 times by 38 tests: end of block

Executed by:

Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
Self test (75)
Self test (76)
...

819

4940 unixLeaveMutex(); -

4941 -

4942

return SQLITE_OK;

executed 1107 times by 38 tests: return 0;

Executed by:

Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
Self test (75)
Self test (76)
...

1107

4943 } -

4944 -

4945 -

4946 #else -

4947 # define unixShmMap 0 -

4948 # define unixShmLock 0 -

4949 # define unixShmBarrier 0 -

4950 # define unixShmUnmap 0 -

4951 #endif /* #ifndef SQLITE_OMIT_WAL */ -

4952 -

4953 #if SQLITE_MAX_MMAP_SIZE>0 -

4954 /* -

4955 ** If it is currently memory mapped, unmap file pFd. -

4956 */ -

4957 static void unixUnmapfile(unixFile *pFd){ -

4958 assert( pFd->nFetchOut==0 ); -

4959

if( pFd->pMapRegion ){

pFd->pMapRegion

Description

TRUE

evaluated 226 times by 2 tests

Evaluated by:

Self test (33)
Self test (438)

FALSE

evaluated 76490 times by 334 tests

Evaluated by:

Self test
Self test (10)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
Self test (124)
...

226-76490

4960 osMunmap(pFd->pMapRegion, pFd->mmapSizeActual); -

4961 pFd->pMapRegion = 0; -

4962 pFd->mmapSize = 0; -

4963 pFd->mmapSizeActual = 0; -

4964

}

executed 226 times by 2 tests: end of block

Executed by:

Self test (33)
Self test (438)

226

4965

}

executed 76716 times by 334 tests: end of block

Executed by:

Self test
Self test (10)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
Self test (124)
...

76716

4966 -

4967 /* -

4968 ** Attempt to set the size of the memory mapping maintained by file -

4969 ** descriptor pFd to nNew bytes. Any existing mapping is discarded. -

4970 ** -

4971 ** If successful, this function sets the following variables: -

4972 ** -

4973 ** unixFile.pMapRegion -

4974 ** unixFile.mmapSize -

4975 ** unixFile.mmapSizeActual -

4976 ** -

4977 ** If unsuccessful, an error message is logged via sqlite3_log() and -

4978 ** the three variables above are zeroed. In this case SQLite should -

4979 ** continue accessing the database using the xRead() and xWrite() -

4980 ** methods. -

4981 */ -

4982 static void unixRemapfile( -

4983 unixFile *pFd, /* File descriptor object */ -

4984 i64 nNew /* Required mapping size */ -

4985 ){ -

4986 const char *zErr = "mmap"; -

4987 int h = pFd->h; /* File descriptor open on db file */ -

4988 u8 *pOrig = (u8 *)pFd->pMapRegion; /* Pointer to current file mapping */ -

4989 i64 nOrig = pFd->mmapSizeActual; /* Size of pOrig region in bytes */ -

4990 u8 *pNew = 0; /* Location of new mapping */ -

4991 int flags = PROT_READ; /* Flags to pass to mmap() */ -

4992 -

4993 assert( pFd->nFetchOut==0 ); -

4994 assert( nNew>pFd->mmapSize ); -

4995 assert( nNew<=pFd->mmapSizeMax ); -

4996 assert( nNew>0 ); -

4997 assert( pFd->mmapSizeActual>=pFd->mmapSize ); -

4998 assert( MAP_FAILED!=0 ); -

4999 -

5000 #ifdef SQLITE_MMAP_READWRITE -

5001 if( (pFd->ctrlFlags & UNIXFILE_RDONLY)==0 ) flags |= PROT_WRITE; -

5002 #endif -

5003 -

5004

if( pOrig ){

pOrig	Description
TRUE	evaluated 3363 times by 2 tests Evaluated by: Self test (33) Self test (438)
FALSE	evaluated 234 times by 2 tests Evaluated by: Self test (33) Self test (438)

234-3363

5005 #if HAVE_MREMAP -

5006 i64 nReuse = pFd->mmapSize; -

5007 #else -

5008 const int szSyspage = osGetpagesize(); -

5009 i64 nReuse = (pFd->mmapSize & ~(szSyspage-1)); -

5010 #endif -

5011 u8 *pReq = &pOrig[nReuse]; -

5012 -

5013 /* Unmap any pages of the existing mapping that cannot be reused. */ -

5014

if( nReuse!=nOrig ){

nReuse!=nOrig	Description
TRUE	evaluated 4 times by 2 tests Evaluated by: Self test (33) Self test (438)
FALSE	evaluated 3359 times by 2 tests Evaluated by: Self test (33) Self test (438)

4-3359

5015 osMunmap(pReq, nOrig-nReuse); -

5016

}

executed 4 times by 2 tests: end of block

Executed by:

Self test (33)
Self test (438)

5017 -

5018 #if HAVE_MREMAP -

5019 pNew = osMremap(pOrig, nReuse, nNew, MREMAP_MAYMOVE); -

5020 zErr = "mremap"; -

5021 #else -

5022 pNew = osMmap(pReq, nNew-nReuse, flags, MAP_SHARED, h, nReuse); -

5023 if( pNew!=MAP_FAILED ){ -

5024 if( pNew!=pReq ){ -

5025 osMunmap(pNew, nNew - nReuse); -

5026 pNew = 0; -

5027 }else{ -

5028 pNew = pOrig; -

5029 } -

5030 } -

5031 #endif -

5032 -

5033 /* The attempt to extend the existing mapping failed. Free it. */ -

5034

if( pNew==MAP_FAILED || pNew==0 ){

pNew== ((void *) -1)	Description
TRUE	evaluated 7 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 3356 times by 2 tests Evaluated by: Self test (33) Self test (438)

pNew==0	Description
TRUE	never evaluated
FALSE	evaluated 3356 times by 2 tests Evaluated by: Self test (33) Self test (438)

0-3356

5035 osMunmap(pOrig, nReuse); -

5036

}

executed 7 times by 1 test: end of block

Executed by:

Self test (438)

5037

}

executed 3363 times by 2 tests: end of block

Executed by:

Self test (33)
Self test (438)

3363

5038 -

5039 /* If pNew is still NULL, try to create an entirely new mapping. */ -

5040

if( pNew==0 ){

pNew==0	Description
TRUE	evaluated 234 times by 2 tests Evaluated by: Self test (33) Self test (438)
FALSE	evaluated 3363 times by 2 tests Evaluated by: Self test (33) Self test (438)

234-3363

5041 pNew = osMmap(0, nNew, flags, MAP_SHARED, h, 0); -

5042

}

executed 234 times by 2 tests: end of block

Executed by:

Self test (33)
Self test (438)

234

5043 -

5044

if( pNew==MAP_FAILED ){

pNew== ((void *) -1)	Description
TRUE	evaluated 8 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 3589 times by 2 tests Evaluated by: Self test (33) Self test (438)

8-3589

5045 pNew = 0; -

5046 nNew = 0; -

5047 unixLogError(SQLITE_OK, zErr, pFd->zPath); -

5048 -

5049 /* If the mmap() above failed, assume that all subsequent mmap() calls -

5050 ** will probably fail too. Fall back to using xRead/xWrite exclusively -

5051 ** in this case. */ -

5052 pFd->mmapSizeMax = 0; -

5053

}

executed 8 times by 1 test: end of block

Executed by:

Self test (438)

5054 pFd->pMapRegion = (void *)pNew; -

5055 pFd->mmapSize = pFd->mmapSizeActual = nNew; -

5056

}

executed 3597 times by 2 tests: end of block

Executed by:

Self test (33)
Self test (438)

3597

5057 -

5058 /* -

5059 ** Memory map or remap the file opened by file-descriptor pFd (if the file -

5060 ** is already mapped, the existing mapping is replaced by the new). Or, if -

5061 ** there already exists a mapping for this file, and there are still -

5062 ** outstanding xFetch() references to it, this function is a no-op. -

5063 ** -

5064 ** If parameter nByte is non-negative, then it is the requested size of -

5065 ** the mapping to create. Otherwise, if nByte is less than zero, then the -

5066 ** requested size is the size of the file on disk. The actual size of the -

5067 ** created mapping is either the requested size or the value configured -

5068 ** using SQLITE_FCNTL_MMAP_LIMIT, whichever is smaller. -

5069 ** -

5070 ** SQLITE_OK is returned if no error occurs (even if the mapping is not -

5071 ** recreated as a result of outstanding references) or an SQLite error -

5072 ** code otherwise. -

5073 */ -

5074 static int unixMapfile(unixFile *pFd, i64 nMap){ -

5075 assert( nMap>=0 || pFd->nFetchOut==0 ); -

5076 assert( nMap>0 || (pFd->mmapSize==0 && pFd->pMapRegion==0) ); -

5077

if( pFd->nFetchOut>0 ) return SQLITE_OK;

never executed: return 0;

pFd->nFetchOut>0	Description
TRUE	never evaluated
FALSE	evaluated 3599 times by 2 tests Evaluated by: Self test (33) Self test (438)

0-3599

5078 -

5079

if( nMap<0 ){

nMap<0	Description
TRUE	evaluated 55 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 3544 times by 2 tests Evaluated by: Self test (33) Self test (438)

55-3544

5080 struct stat statbuf; /* Low-level file information */ -

5081

if( osFstat(pFd->h, &statbuf) ){

((int(*)(int,s...->h, &statbuf)	Description
TRUE	never evaluated
FALSE	evaluated 55 times by 1 test Evaluated by: Self test (438)

0-55

5082

return SQLITE_IOERR_FSTAT;

never executed: return (10 | (7<<8));

5083 } -

5084 nMap = statbuf.st_size; -

5085

}

executed 55 times by 1 test: end of block

Executed by:

Self test (438)

5086

if( nMap>pFd->mmapSizeMax ){

nMap>pFd->mmapSizeMax	Description
TRUE	evaluated 18 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 3581 times by 2 tests Evaluated by: Self test (33) Self test (438)

18-3581

5087 nMap = pFd->mmapSizeMax; -

5088

}

executed 18 times by 1 test: end of block

Executed by:

Self test (438)

5089 -

5090 assert( nMap>0 || (pFd->mmapSize==0 && pFd->pMapRegion==0) ); -

5091

if( nMap!=pFd->mmapSize ){

nMap!=pFd->mmapSize	Description
TRUE	evaluated 3597 times by 2 tests Evaluated by: Self test (33) Self test (438)
FALSE	evaluated 2 times by 1 test Evaluated by: Self test (438)

2-3597

5092 unixRemapfile(pFd, nMap); -

5093

}

executed 3597 times by 2 tests: end of block

Executed by:

Self test (33)
Self test (438)

3597

5094 -

5095

return SQLITE_OK;

executed 3599 times by 2 tests: return 0;

Executed by:

Self test (33)
Self test (438)

3599

5096 } -

5097 #endif /* SQLITE_MAX_MMAP_SIZE>0 */ -

5098 -

5099 /* -

5100 ** If possible, return a pointer to a mapping of file fd starting at offset -

5101 ** iOff. The mapping must be valid for at least nAmt bytes. -

5102 ** -

5103 ** If such a pointer can be obtained, store it in *pp and return SQLITE_OK. -

5104 ** Or, if one cannot but no error occurs, set *pp to 0 and return SQLITE_OK. -

5105 ** Finally, if an error does occur, return an SQLite error code. The final -

5106 ** value of *pp is undefined in this case. -

5107 ** -

5108 ** If this function does return a pointer, the caller must eventually -

5109 ** release the reference by calling unixUnfetch(). -

5110 */ -

5111 static int unixFetch(sqlite3_file *fd, i64 iOff, int nAmt, void **pp){ -

5112 #if SQLITE_MAX_MMAP_SIZE>0 -

5113 unixFile *pFd = (unixFile *)fd; /* The underlying database file */ -

5114 #endif -

5115 *pp = 0; -

5116 -

5117 #if SQLITE_MAX_MMAP_SIZE>0 -

5118

if( pFd->mmapSizeMax>0 ){

pFd->mmapSizeMax>0	Description
TRUE	evaluated 113867 times by 2 tests Evaluated by: Self test (33) Self test (438)
FALSE	evaluated 15357 times by 1 test Evaluated by: Self test (438)

15357-113867

5119

if( pFd->pMapRegion==0 ){

pFd->pMapRegion==0	Description
TRUE	evaluated 52 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 113815 times by 2 tests Evaluated by: Self test (33) Self test (438)

52-113815

5120 int rc = unixMapfile(pFd, -1); -

5121

if( rc!=SQLITE_OK ) return rc;

never executed: return rc;

rc!=0	Description
TRUE	never evaluated
FALSE	evaluated 52 times by 1 test Evaluated by: Self test (438)

0-52

5122

}

executed 52 times by 1 test: end of block

Executed by:

Self test (438)

5123

if( pFd->mmapSize >= iOff+nAmt ){

pFd->mmapSize >= iOff+nAmt	Description
TRUE	evaluated 99785 times by 2 tests Evaluated by: Self test (33) Self test (438)
FALSE	evaluated 14082 times by 2 tests Evaluated by: Self test (33) Self test (438)

14082-99785

5124 *pp = &((u8 *)pFd->pMapRegion)[iOff]; -

5125 pFd->nFetchOut++; -

5126

}

executed 99784 times by 2 tests: end of block

Executed by:

Self test (33)
Self test (438)

99784

5127

}

executed 113867 times by 2 tests: end of block

Executed by:

Self test (33)
Self test (438)

113867

5128 #endif -

5129

return SQLITE_OK;

executed 129224 times by 2 tests: return 0;

Executed by:

Self test (33)
Self test (438)

129224

5130 } -

5131 -

5132 /* -

5133 ** If the third argument is non-NULL, then this function releases a -

5134 ** reference obtained by an earlier call to unixFetch(). The second -

5135 ** argument passed to this function must be the same as the corresponding -

5136 ** argument that was passed to the unixFetch() invocation. -

5137 ** -

5138 ** Or, if the third argument is NULL, then this function is being called -

5139 ** to inform the VFS layer that, according to POSIX, any existing mapping -

5140 ** may now be invalid and should be unmapped. -

5141 */ -

5142 static int unixUnfetch(sqlite3_file *fd, i64 iOff, void *p){ -

5143 #if SQLITE_MAX_MMAP_SIZE>0 -

5144 unixFile *pFd = (unixFile *)fd; /* The underlying database file */ -

5145 UNUSED_PARAMETER(iOff); -

5146 -

5147 /* If p==0 (unmap the entire file) then there must be no outstanding -

5148 ** xFetch references. Or, if p!=0 (meaning it is an xFetch reference), -

5149 ** then there must be at least one outstanding. */ -

5150 assert( (p==0)==(pFd->nFetchOut==0) ); -

5151 -

5152 /* If p!=0, it must match the iOff value. */ -

5153 assert( p==0 || p==&((u8 *)pFd->pMapRegion)[iOff] ); -

5154 -

5155

if( p ){

p	Description
TRUE	evaluated 99784 times by 2 tests Evaluated by: Self test (33) Self test (438)
FALSE	evaluated 217 times by 3 tests Evaluated by: Self test (438) Self test (72) Self test (75)

217-99784

5156 pFd->nFetchOut--; -

5157

}else{

executed 99784 times by 2 tests: end of block

Executed by:

Self test (33)
Self test (438)

99784

5158 unixUnmapfile(pFd); -

5159

}

executed 217 times by 3 tests: end of block

Executed by:

Self test (438)
Self test (72)
Self test (75)

217

5160 -

5161 assert( pFd->nFetchOut>=0 ); -

5162 #else -

5163 UNUSED_PARAMETER(fd); -

5164 UNUSED_PARAMETER(p); -

5165 UNUSED_PARAMETER(iOff); -

5166 #endif -

5167

return SQLITE_OK;

executed 100001 times by 4 tests: return 0;

Executed by:

Self test (33)
Self test (438)
Self test (72)
Self test (75)

100001

5168 } -

5169 -

5170 /* -

5171 ** Here ends the implementation of all sqlite3_file methods. -

5172 ** -

5173 ********************** End sqlite3_file Methods ******************************* -

5174 ******************************************************************************/ -

5175 -

5176 /* -

5177 ** This division contains definitions of sqlite3_io_methods objects that -

5178 ** implement various file locking strategies. It also contains definitions -

5179 ** of "finder" functions. A finder-function is used to locate the appropriate -

5180 ** sqlite3_io_methods object for a particular database file. The pAppData -

5181 ** field of the sqlite3_vfs VFS objects are initialized to be pointers to -

5182 ** the correct finder-function for that VFS. -

5183 ** -

5184 ** Most finder functions return a pointer to a fixed sqlite3_io_methods -

5185 ** object. The only interesting finder-function is autolockIoFinder, which -

5186 ** looks at the filesystem type and tries to guess the best locking -

5187 ** strategy from that. -

5188 ** -

5189 ** For finder-function F, two objects are created: -

5190 ** -

5191 ** (1) The real finder-function named "FImpt()". -

5192 ** -

5193 ** (2) A constant pointer to this function named just "F". -

5194 ** -

5195 ** -

5196 ** A pointer to the F pointer is used as the pAppData value for VFS -

5197 ** objects. We have to do this instead of letting pAppData point -

5198 ** directly at the finder-function since C90 rules prevent a void* -

5199 ** from be cast into a function pointer. -

5200 ** -

5201 ** -

5202 ** Each instance of this macro generates two objects: -

5203 ** -

5204 ** * A constant sqlite3_io_methods object call METHOD that has locking -

5205 ** methods CLOSE, LOCK, UNLOCK, CKRESLOCK. -

5206 ** -

5207 ** * An I/O method finder function called FINDER that returns a pointer -

5208 ** to the METHOD object in the previous bullet. -

5209 */ -

5210 #define IOMETHODS(FINDER,METHOD,VERSION,CLOSE,LOCK,UNLOCK,CKLOCK,SHMMAP) \ -

5211 static const sqlite3_io_methods METHOD = { \ -

5212 VERSION, /* iVersion */ \ -

5213 CLOSE, /* xClose */ \ -

5214 unixRead, /* xRead */ \ -

5215 unixWrite, /* xWrite */ \ -

5216 unixTruncate, /* xTruncate */ \ -

5217 unixSync, /* xSync */ \ -

5218 unixFileSize, /* xFileSize */ \ -

5219 LOCK, /* xLock */ \ -

5220 UNLOCK, /* xUnlock */ \ -

5221 CKLOCK, /* xCheckReservedLock */ \ -

5222 unixFileControl, /* xFileControl */ \ -

5223 unixSectorSize, /* xSectorSize */ \ -

5224 unixDeviceCharacteristics, /* xDeviceCapabilities */ \ -

5225 SHMMAP, /* xShmMap */ \ -

5226 unixShmLock, /* xShmLock */ \ -

5227 unixShmBarrier, /* xShmBarrier */ \ -

5228 unixShmUnmap, /* xShmUnmap */ \ -

5229 unixFetch, /* xFetch */ \ -

5230 unixUnfetch, /* xUnfetch */ \ -

5231 }; \ -

5232 static const sqlite3_io_methods *FINDER##Impl(const char *z, unixFile *p){ \ -

5233 UNUSED_PARAMETER(z); UNUSED_PARAMETER(p); \ -

5234 return &METHOD; \ -

5235 } \ -

5236 static const sqlite3_io_methods *(*const FINDER)(const char*,unixFile *p) \ -

5237 = FINDER##Impl; -

5238 -

5239 /* -

5240 ** Here are all of the sqlite3_io_methods objects for each of the -

5241 ** locking strategies. Functions that return pointers to these methods -

5242 ** are also created. -

5243 */ -

5244

IOMETHODS(

executed 32248 times by 438 tests: return &posixIoMethods;

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

32248

5245 posixIoFinder, /* Finder function name */ -

5246 posixIoMethods, /* sqlite3_io_methods object name */ -

5247 3, /* shared memory and mmap are enabled */ -

5248 unixClose, /* xClose method */ -

5249 unixLock, /* xLock method */ -

5250 unixUnlock, /* xUnlock method */ -

5251 unixCheckReservedLock, /* xCheckReservedLock method */ -

5252 unixShmMap /* xShmMap method */ -

5253 ) -

5254

IOMETHODS(

executed 2 times by 1 test: return &nolockIoMethods;

Executed by:

Self test (438)

5255 nolockIoFinder, /* Finder function name */ -

5256 nolockIoMethods, /* sqlite3_io_methods object name */ -

5257 3, /* shared memory and mmap are enabled */ -

5258 nolockClose, /* xClose method */ -

5259 nolockLock, /* xLock method */ -

5260 nolockUnlock, /* xUnlock method */ -

5261 nolockCheckReservedLock, /* xCheckReservedLock method */ -

5262 0 /* xShmMap method */ -

5263 ) -

5264

IOMETHODS(

executed 2 times by 1 test: return &dotlockIoMethods;

Executed by:

Self test (438)

5265 dotlockIoFinder, /* Finder function name */ -

5266 dotlockIoMethods, /* sqlite3_io_methods object name */ -

5267 1, /* shared memory is disabled */ -

5268 dotlockClose, /* xClose method */ -

5269 dotlockLock, /* xLock method */ -

5270 dotlockUnlock, /* xUnlock method */ -

5271 dotlockCheckReservedLock, /* xCheckReservedLock method */ -

5272 0 /* xShmMap method */ -

5273 ) -

5274 -

5275 #if SQLITE_ENABLE_LOCKING_STYLE -

5276 IOMETHODS( -

5277 flockIoFinder, /* Finder function name */ -

5278 flockIoMethods, /* sqlite3_io_methods object name */ -

5279 1, /* shared memory is disabled */ -

5280 flockClose, /* xClose method */ -

5281 flockLock, /* xLock method */ -

5282 flockUnlock, /* xUnlock method */ -

5283 flockCheckReservedLock, /* xCheckReservedLock method */ -

5284 0 /* xShmMap method */ -

5285 ) -

5286 #endif -

5287 -

5288 #if OS_VXWORKS -

5289 IOMETHODS( -

5290 semIoFinder, /* Finder function name */ -

5291 semIoMethods, /* sqlite3_io_methods object name */ -

5292 1, /* shared memory is disabled */ -

5293 semXClose, /* xClose method */ -

5294 semXLock, /* xLock method */ -

5295 semXUnlock, /* xUnlock method */ -

5296 semXCheckReservedLock, /* xCheckReservedLock method */ -

5297 0 /* xShmMap method */ -

5298 ) -

5299 #endif -

5300 -

5301 #if defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE -

5302 IOMETHODS( -

5303 afpIoFinder, /* Finder function name */ -

5304 afpIoMethods, /* sqlite3_io_methods object name */ -

5305 1, /* shared memory is disabled */ -

5306 afpClose, /* xClose method */ -

5307 afpLock, /* xLock method */ -

5308 afpUnlock, /* xUnlock method */ -

5309 afpCheckReservedLock, /* xCheckReservedLock method */ -

5310 0 /* xShmMap method */ -

5311 ) -

5312 #endif -

5313 -

5314 /* -

5315 ** The proxy locking method is a "super-method" in the sense that it -

5316 ** opens secondary file descriptors for the conch and lock files and -

5317 ** it uses proxy, dot-file, AFP, and flock() locking methods on those -

5318 ** secondary files. For this reason, the division that implements -

5319 ** proxy locking is located much further down in the file. But we need -

5320 ** to go ahead and define the sqlite3_io_methods and finder function -

5321 ** for proxy locking here. So we forward declare the I/O methods. -

5322 */ -

5323 #if defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE -

5324 static int proxyClose(sqlite3_file*); -

5325 static int proxyLock(sqlite3_file*, int); -

5326 static int proxyUnlock(sqlite3_file*, int); -

5327 static int proxyCheckReservedLock(sqlite3_file*, int*); -

5328 IOMETHODS( -

5329 proxyIoFinder, /* Finder function name */ -

5330 proxyIoMethods, /* sqlite3_io_methods object name */ -

5331 1, /* shared memory is disabled */ -

5332 proxyClose, /* xClose method */ -

5333 proxyLock, /* xLock method */ -

5334 proxyUnlock, /* xUnlock method */ -

5335 proxyCheckReservedLock, /* xCheckReservedLock method */ -

5336 0 /* xShmMap method */ -

5337 ) -

5338 #endif -

5339 -

5340 /* nfs lockd on OSX 10.3+ doesn't clear write locks when a read lock is set */ -

5341 #if defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE -

5342 IOMETHODS( -

5343 nfsIoFinder, /* Finder function name */ -

5344 nfsIoMethods, /* sqlite3_io_methods object name */ -

5345 1, /* shared memory is disabled */ -

5346 unixClose, /* xClose method */ -

5347 unixLock, /* xLock method */ -

5348 nfsUnlock, /* xUnlock method */ -

5349 unixCheckReservedLock, /* xCheckReservedLock method */ -

5350 0 /* xShmMap method */ -

5351 ) -

5352 #endif -

5353 -

5354 #if defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE -

5355 /* -

5356 ** This "finder" function attempts to determine the best locking strategy -

5357 ** for the database file "filePath". It then returns the sqlite3_io_methods -

5358 ** object that implements that strategy. -

5359 ** -

5360 ** This is for MacOSX only. -

5361 */ -

5362 static const sqlite3_io_methods *autolockIoFinderImpl( -

5363 const char *filePath, /* name of the database file */ -

5364 unixFile *pNew /* open file object for the database file */ -

5365 ){ -

5366 static const struct Mapping { -

5367 const char *zFilesystem; /* Filesystem type name */ -

5368 const sqlite3_io_methods *pMethods; /* Appropriate locking method */ -

5369 } aMap[] = { -

5370 { "hfs", &posixIoMethods }, -

5371 { "ufs", &posixIoMethods }, -

5372 { "afpfs", &afpIoMethods }, -

5373 { "smbfs", &afpIoMethods }, -

5374 { "webdav", &nolockIoMethods }, -

5375 { 0, 0 } -

5376 }; -

5377 int i; -

5378 struct statfs fsInfo; -

5379 struct flock lockInfo; -

5380 -

5381 if( !filePath ){ -

5382 /* If filePath==NULL that means we are dealing with a transient file -

5383 ** that does not need to be locked. */ -

5384 return &nolockIoMethods; -

5385 } -

5386 if( statfs(filePath, &fsInfo) != -1 ){ -

5387 if( fsInfo.f_flags & MNT_RDONLY ){ -

5388 return &nolockIoMethods; -

5389 } -

5390 for(i=0; aMap[i].zFilesystem; i++){ -

5391 if( strcmp(fsInfo.f_fstypename, aMap[i].zFilesystem)==0 ){ -

5392 return aMap[i].pMethods; -

5393 } -

5394 } -

5395 } -

5396 -

5397 /* Default case. Handles, amongst others, "nfs". -

5398 ** Test byte-range lock using fcntl(). If the call succeeds, -

5399 ** assume that the file-system supports POSIX style locks. -

5400 */ -

5401 lockInfo.l_len = 1; -

5402 lockInfo.l_start = 0; -

5403 lockInfo.l_whence = SEEK_SET; -

5404 lockInfo.l_type = F_RDLCK; -

5405 if( osFcntl(pNew->h, F_GETLK, &lockInfo)!=-1 ) { -

5406 if( strcmp(fsInfo.f_fstypename, "nfs")==0 ){ -

5407 return &nfsIoMethods; -

5408 } else { -

5409 return &posixIoMethods; -

5410 } -

5411 }else{ -

5412 return &dotlockIoMethods; -

5413 } -

5414 } -

5415 static const sqlite3_io_methods -

5416 *(*const autolockIoFinder)(const char*,unixFile*) = autolockIoFinderImpl; -

5417 -

5418 #endif /* defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE */ -

5419 -

5420 #if OS_VXWORKS -

5421 /* -

5422 ** This "finder" function for VxWorks checks to see if posix advisory -

5423 ** locking works. If it does, then that is what is used. If it does not -

5424 ** work, then fallback to named semaphore locking. -

5425 */ -

5426 static const sqlite3_io_methods *vxworksIoFinderImpl( -

5427 const char *filePath, /* name of the database file */ -

5428 unixFile *pNew /* the open file object */ -

5429 ){ -

5430 struct flock lockInfo; -

5431 -

5432 if( !filePath ){ -

5433 /* If filePath==NULL that means we are dealing with a transient file -

5434 ** that does not need to be locked. */ -

5435 return &nolockIoMethods; -

5436 } -

5437 -

5438 /* Test if fcntl() is supported and use POSIX style locks. -

5439 ** Otherwise fall back to the named semaphore method. -

5440 */ -

5441 lockInfo.l_len = 1; -

5442 lockInfo.l_start = 0; -

5443 lockInfo.l_whence = SEEK_SET; -

5444 lockInfo.l_type = F_RDLCK; -

5445 if( osFcntl(pNew->h, F_GETLK, &lockInfo)!=-1 ) { -

5446 return &posixIoMethods; -

5447 }else{ -

5448 return &semIoMethods; -

5449 } -

5450 } -

5451 static const sqlite3_io_methods -

5452 *(*const vxworksIoFinder)(const char*,unixFile*) = vxworksIoFinderImpl; -

5453 -

5454 #endif /* OS_VXWORKS */ -

5455 -

5456 /* -

5457 ** An abstract type for a pointer to an IO method finder function: -

5458 */ -

5459 typedef const sqlite3_io_methods *(*finder_type)(const char*,unixFile*); -

5460 -

5461 -

5462 /**************************************************************************** -

5463 **************************** sqlite3_vfs methods **************************** -

5464 ** -

5465 ** This division contains the implementation of methods on the -

5466 ** sqlite3_vfs object. -

5467 */ -

5468 -

5469 /* -

5470 ** Initialize the contents of the unixFile structure pointed to by pId. -

5471 */ -

5472 static int fillInUnixFile( -

5473 sqlite3_vfs *pVfs, /* Pointer to vfs object */ -

5474 int h, /* Open file descriptor of file being opened */ -

5475 sqlite3_file *pId, /* Write to the unixFile structure here */ -

5476 const char *zFilename, /* Name of the file being opened */ -

5477 int ctrlFlags /* Zero or more UNIXFILE_* values */ -

5478 ){ -

5479 const sqlite3_io_methods *pLockingStyle; -

5480 unixFile *pNew = (unixFile *)pId; -

5481 int rc = SQLITE_OK; -

5482 -

5483 assert( pNew->pInode==NULL ); -

5484 -

5485 /* No locking occurs in temporary files */ -

5486 assert( zFilename!=0 || (ctrlFlags & UNIXFILE_NOLOCK)!=0 ); -

5487 -

5488

OSTRACE(("OPEN %-3d %s\n", h, zFilename));

never executed: sqlite3DebugPrintf ("OPEN %-3d %s\n", h, zFilename);

sqlite3OSTrace

Description

TRUE

never evaluated

FALSE

evaluated 77255 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

0-77255

5489 pNew->h = h; -

5490 pNew->pVfs = pVfs; -

5491 pNew->zPath = zFilename; -

5492 pNew->ctrlFlags = (u8)ctrlFlags; -

5493 #if SQLITE_MAX_MMAP_SIZE>0 -

5494 pNew->mmapSizeMax = sqlite3GlobalConfig.szMmap; -

5495 #endif -

5496

if( sqlite3_uri_boolean(((ctrlFlags & UNIXFILE_URI) ? zFilename : 0),

sqlite3_uri_bo...0), "psow", 1)

Description

TRUE

evaluated 77249 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

FALSE

evaluated 6 times by 2 tests

Evaluated by:

Self test (438)
Self test (61)

6-77249

5497

"psow", SQLITE_POWERSAFE_OVERWRITE) ){

sqlite3_uri_bo...0), "psow", 1)

Description

TRUE

evaluated 77249 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

FALSE

evaluated 6 times by 2 tests

Evaluated by:

Self test (438)
Self test (61)

6-77249

5498 pNew->ctrlFlags |= UNIXFILE_PSOW; -

5499

}

executed 77249 times by 438 tests: end of block

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

77249

5500

if( strcmp(pVfs->zName,"unix-excl")==0 ){

never executed: __result = (((const unsigned char *) (const char *) ( pVfs->zName ))[3] - __s2[3]);

never executed: end of block

never executed: __result = (((const unsigned char *) (const char *) ( "unix-excl" ))[3] - __s2[3]);

never executed: end of block

__extension__ ..." )))); }) ==0

Description

TRUE

evaluated 13 times by 2 tests

Evaluated by:

Self test (438)
Self test (61)

FALSE

evaluated 77242 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

__s1_len > 0	Description
TRUE	never evaluated
FALSE	never evaluated

__result == 0	Description
TRUE	never evaluated
FALSE	never evaluated

__s1_len > 1	Description
TRUE	never evaluated
FALSE	never evaluated

__result == 0	Description
TRUE	never evaluated
FALSE	never evaluated

__s1_len > 2	Description
TRUE	never evaluated
FALSE	never evaluated

__result == 0	Description
TRUE	never evaluated
FALSE	never evaluated

__s2_len > 0	Description
TRUE	never evaluated
FALSE	never evaluated

__result == 0	Description
TRUE	never evaluated
FALSE	never evaluated

__s2_len > 1	Description
TRUE	never evaluated
FALSE	never evaluated

__result == 0	Description
TRUE	never evaluated
FALSE	never evaluated

__s2_len > 2	Description
TRUE	never evaluated
FALSE	never evaluated

__result == 0	Description
TRUE	never evaluated
FALSE	never evaluated

0-77242

5501 pNew->ctrlFlags |= UNIXFILE_EXCL; -

5502

}

executed 13 times by 2 tests: end of block

Executed by:

Self test (438)
Self test (61)

5503 -

5504 #if OS_VXWORKS -

5505 pNew->pId = vxworksFindFileId(zFilename); -

5506 if( pNew->pId==0 ){ -

5507 ctrlFlags |= UNIXFILE_NOLOCK; -

5508 rc = SQLITE_NOMEM_BKPT; -

5509 } -

5510 #endif -

5511 -

5512

if( ctrlFlags & UNIXFILE_NOLOCK ){

ctrlFlags & 0x80

Description

TRUE

evaluated 45003 times by 425 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

FALSE

evaluated 32252 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

32252-45003

5513 pLockingStyle = &nolockIoMethods; -

5514

}else{

executed 45003 times by 425 tests: end of block

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

45003

5515 pLockingStyle = (**(finder_type*)pVfs->pAppData)(zFilename, pNew); -

5516 #if SQLITE_ENABLE_LOCKING_STYLE -

5517 /* Cache zFilename in the locking context (AFP and dotlock override) for -

5518 ** proxyLock activation is possible (remote proxy is based on db name) -

5519 ** zFilename remains valid until file is closed, to support */ -

5520 pNew->lockingContext = (void*)zFilename; -

5521 #endif -

5522

}

executed 32252 times by 438 tests: end of block

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

32252

5523 -

5524

if( pLockingStyle == &posixIoMethods

pLockingStyle ...posixIoMethods

Description

TRUE

evaluated 32248 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

FALSE

evaluated 45007 times by 425 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

32248-45007

5525 #if defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE -

5526 || pLockingStyle == &nfsIoMethods -

5527 #endif -

5528 ){ -

5529 unixEnterMutex(); -

5530 rc = findInodeInfo(pNew, &pNew->pInode); -

5531

if( rc!=SQLITE_OK ){

rc!=0

Description

TRUE

evaluated 16 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 32232 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

16-32232

5532 /* If an error occurred in findInodeInfo(), close the file descriptor -

5533 ** immediately, before releasing the mutex. findInodeInfo() may fail -

5534 ** in two scenarios: -

5535 ** -

5536 ** (a) A call to fstat() failed. -

5537 ** (b) A malloc failed. -

5538 ** -

5539 ** Scenario (b) may only occur if the process is holding no other -

5540 ** file descriptors open on the same file. If there were other file -

5541 ** descriptors on this file, then no malloc would be required by -

5542 ** findInodeInfo(). If this is the case, it is quite safe to close -

5543 ** handle h - as it is guaranteed that no posix locks will be released -

5544 ** by doing so. -

5545 ** -

5546 ** If scenario (a) caused the error then things are not so safe. The -

5547 ** implicit assumption here is that if fstat() fails, things are in -

5548 ** such bad shape that dropping a lock or two doesn't matter much. -

5549 */ -

5550 robust_close(pNew, h, __LINE__); -

5551 h = -1; -

5552

}

executed 16 times by 1 test: end of block

Executed by:

Self test (438)

5553 unixLeaveMutex(); -

5554

}

executed 32248 times by 438 tests: end of block

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

32248

5555 -

5556 #if SQLITE_ENABLE_LOCKING_STYLE && defined(__APPLE__) -

5557 else if( pLockingStyle == &afpIoMethods ){ -

5558 /* AFP locking uses the file path so it needs to be included in -

5559 ** the afpLockingContext. -

5560 */ -

5561 afpLockingContext *pCtx; -

5562 pNew->lockingContext = pCtx = sqlite3_malloc64( sizeof(*pCtx) ); -

5563 if( pCtx==0 ){ -

5564 rc = SQLITE_NOMEM_BKPT; -

5565 }else{ -

5566 /* NB: zFilename exists and remains valid until the file is closed -

5567 ** according to requirement F11141. So we do not need to make a -

5568 ** copy of the filename. */ -

5569 pCtx->dbPath = zFilename; -

5570 pCtx->reserved = 0; -

5571 srandomdev(); -

5572 unixEnterMutex(); -

5573 rc = findInodeInfo(pNew, &pNew->pInode); -

5574 if( rc!=SQLITE_OK ){ -

5575 sqlite3_free(pNew->lockingContext); -

5576 robust_close(pNew, h, __LINE__); -

5577 h = -1; -

5578 } -

5579 unixLeaveMutex(); -

5580 } -

5581 } -

5582 #endif -

5583 -

5584

else if( pLockingStyle == &dotlockIoMethods ){

pLockingStyle ...tlockIoMethods

Description

TRUE

evaluated 2 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 45005 times by 425 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

2-45005

5585 /* Dotfile locking uses the file path so it needs to be included in -

5586 ** the dotlockLockingContext -

5587 */ -

5588 char *zLockFile; -

5589 int nFilename; -

5590 assert( zFilename!=0 ); -

5591 nFilename = (int)strlen(zFilename) + 6; -

5592 zLockFile = (char *)sqlite3_malloc64(nFilename); -

5593

if( zLockFile==0 ){

zLockFile==0	Description
TRUE	never evaluated
FALSE	evaluated 2 times by 1 test Evaluated by: Self test (438)

0-2

5594 rc = SQLITE_NOMEM_BKPT; -

5595

}else{

never executed: end of block

5596 sqlite3_snprintf(nFilename, zLockFile, "%s" DOTLOCK_SUFFIX, zFilename); -

5597

}

executed 2 times by 1 test: end of block

Executed by:

Self test (438)

5598 pNew->lockingContext = zLockFile; -

5599

}

executed 2 times by 1 test: end of block

Executed by:

Self test (438)

5600 -

5601 #if OS_VXWORKS -

5602 else if( pLockingStyle == &semIoMethods ){ -

5603 /* Named semaphore locking uses the file path so it needs to be -

5604 ** included in the semLockingContext -

5605 */ -

5606 unixEnterMutex(); -

5607 rc = findInodeInfo(pNew, &pNew->pInode); -

5608 if( (rc==SQLITE_OK) && (pNew->pInode->pSem==NULL) ){ -

5609 char *zSemName = pNew->pInode->aSemName; -

5610 int n; -

5611 sqlite3_snprintf(MAX_PATHNAME, zSemName, "/%s.sem", -

5612 pNew->pId->zCanonicalName); -

5613 for( n=1; zSemName[n]; n++ ) -

5614 if( zSemName[n]=='/' ) zSemName[n] = '_'; -

5615 pNew->pInode->pSem = sem_open(zSemName, O_CREAT, 0666, 1); -

5616 if( pNew->pInode->pSem == SEM_FAILED ){ -

5617 rc = SQLITE_NOMEM_BKPT; -

5618 pNew->pInode->aSemName[0] = '\0'; -

5619 } -

5620 } -

5621 unixLeaveMutex(); -

5622 } -

5623 #endif -

5624 -

5625 storeLastErrno(pNew, 0); -

5626 #if OS_VXWORKS -

5627 if( rc!=SQLITE_OK ){ -

5628 if( h>=0 ) robust_close(pNew, h, __LINE__); -

5629 h = -1; -

5630 osUnlink(zFilename); -

5631 pNew->ctrlFlags |= UNIXFILE_DELETE; -

5632 } -

5633 #endif -

5634

if( rc!=SQLITE_OK ){

rc!=0

Description

TRUE

evaluated 16 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 77239 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

16-77239

5635

if( h>=0 ) robust_close(pNew, h, __LINE__);

never executed: robust_close(pNew, h, 5635);

h>=0	Description
TRUE	never evaluated
FALSE	evaluated 16 times by 1 test Evaluated by: Self test (438)

0-16

5636

}else{

executed 16 times by 1 test: end of block

Executed by:

Self test (438)

5637 pNew->pMethod = pLockingStyle; -

5638 OpenCounter(+1); -

5639 verifyDbFile(pNew); -

5640

}

executed 77239 times by 438 tests: end of block

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

77239

5641

return rc;

executed 77255 times by 438 tests: return rc;

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

77255

5642 } -

5643 -

5644 /* -

5645 ** Return the name of a directory in which to put temporary files. -

5646 ** If no suitable temporary file directory can be found, return NULL. -

5647 */ -

5648 static const char *unixTempFileDir(void){ -

5649 static const char *azDirs[] = { -

5650 0, -

5651 0, -

5652 "/var/tmp", -

5653 "/usr/tmp", -

5654 "/tmp", -

5655 "." -

5656 }; -

5657 unsigned int i = 0; -

5658 struct stat buf; -

5659 const char *zDir = sqlite3_temp_directory; -

5660 -

5661

if( !azDirs[0] ) azDirs[0] = getenv("SQLITE_TMPDIR");

executed 279 times by 3 tests: azDirs[0] = getenv("SQLITE_TMPDIR");

Executed by:

Self test (438)
Self test (54)
Self test (64)

!azDirs[0]	Description
TRUE	evaluated 279 times by 3 tests Evaluated by: Self test (438) Self test (54) Self test (64)
FALSE	never evaluated

0-279

5662

if( !azDirs[1] ) azDirs[1] = getenv("TMPDIR");

executed 279 times by 3 tests: azDirs[1] = getenv("TMPDIR");

Executed by:

Self test (438)
Self test (54)
Self test (64)

!azDirs[1]	Description
TRUE	evaluated 279 times by 3 tests Evaluated by: Self test (438) Self test (54) Self test (64)
FALSE	never evaluated

0-279

5663 while(1){ -

5664

if( zDir!=0

zDir!=0	Description
TRUE	evaluated 279 times by 3 tests Evaluated by: Self test (438) Self test (54) Self test (64)
FALSE	evaluated 837 times by 3 tests Evaluated by: Self test (438) Self test (54) Self test (64)

279-837

5665

&& osStat(zDir, &buf)==0

((int(*)(const...zDir, &buf)==0	Description
TRUE	evaluated 279 times by 3 tests Evaluated by: Self test (438) Self test (54) Self test (64)
FALSE	never evaluated

0-279

5666

&& S_ISDIR(buf.st_mode)

(((( buf.st_mo... == (0040000))	Description
TRUE	evaluated 279 times by 3 tests Evaluated by: Self test (438) Self test (54) Self test (64)
FALSE	never evaluated

0-279

5667

&& osAccess(zDir, 03)==0

((int(*)(const...)(zDir, 03)==0	Description
TRUE	evaluated 279 times by 3 tests Evaluated by: Self test (438) Self test (54) Self test (64)
FALSE	never evaluated

0-279

5668 ){ -

5669

return zDir;

executed 279 times by 3 tests: return zDir;

Executed by:

Self test (438)
Self test (54)
Self test (64)

279

5670 } -

5671

if( i>=sizeof(azDirs)/sizeof(azDirs[0]) ) break;

never executed: break;

i>=sizeof(azDi...eof(azDirs[0])	Description
TRUE	never evaluated
FALSE	evaluated 837 times by 3 tests Evaluated by: Self test (438) Self test (54) Self test (64)

0-837

5672 zDir = azDirs[i++]; -

5673

}

executed 837 times by 3 tests: end of block

Executed by:

Self test (438)
Self test (54)
Self test (64)

837

5674

return 0;

never executed: return 0;

5675 } -

5676 -

5677 /* -

5678 ** Create a temporary file name in zBuf. zBuf must be allocated -

5679 ** by the calling process and must be big enough to hold at least -

5680 ** pVfs->mxPathname bytes. -

5681 */ -

5682 static int unixGetTempname(int nBuf, char *zBuf){ -

5683 const char *zDir; -

5684 int iLimit = 0; -

5685 -

5686 /* It's odd to simulate an io-error here, but really this is just -

5687 ** using the io-error infrastructure to test that SQLite handles this -

5688 ** function failing. -

5689 */ -

5690 zBuf[0] = 0; -

5691

SimulateIOError( return SQLITE_IOERR );

never executed: return 10;

sqlite3_io_error_persist	Description
TRUE	never evaluated
FALSE	evaluated 279 times by 3 tests Evaluated by: Self test (438) Self test (54) Self test (64)

sqlite3_io_error_hit	Description
TRUE	never evaluated
FALSE	never evaluated

sqlite3_io_err...pending-- == 1	Description
TRUE	never evaluated
FALSE	evaluated 279 times by 3 tests Evaluated by: Self test (438) Self test (54) Self test (64)

0-279

5692 -

5693 zDir = unixTempFileDir(); -

5694

if( zDir==0 ) return SQLITE_IOERR_GETTEMPPATH;

never executed: return (10 | (25<<8));

zDir==0	Description
TRUE	never evaluated
FALSE	evaluated 279 times by 3 tests Evaluated by: Self test (438) Self test (54) Self test (64)

0-279

5695 do{ -

5696 u64 r; -

5697 sqlite3_randomness(sizeof(r), &r); -

5698 assert( nBuf>2 ); -

5699 zBuf[nBuf-2] = 0; -

5700 sqlite3_snprintf(nBuf, zBuf, "%s/"SQLITE_TEMP_FILE_PREFIX"%llx%c", -

5701 zDir, r, 0); -

5702

if( zBuf[nBuf-2]!=0 || (iLimit++)>10 ) return SQLITE_ERROR;

never executed: return 1;

zBuf[nBuf-2]!=0	Description
TRUE	never evaluated
FALSE	evaluated 279 times by 3 tests Evaluated by: Self test (438) Self test (54) Self test (64)

(iLimit++)>10	Description
TRUE	never evaluated
FALSE	evaluated 279 times by 3 tests Evaluated by: Self test (438) Self test (54) Self test (64)

0-279

5703

}while( osAccess(zBuf,0)==0 );

executed 279 times by 3 tests: end of block

Executed by:

Self test (438)
Self test (54)
Self test (64)

((int(*)(const...nt)(zBuf,0)==0	Description
TRUE	never evaluated
FALSE	evaluated 279 times by 3 tests Evaluated by: Self test (438) Self test (54) Self test (64)

0-279

5704

return SQLITE_OK;

executed 278 times by 3 tests: return 0;

Executed by:

Self test (438)
Self test (54)
Self test (64)

278

5705 } -

5706 -

5707 #if SQLITE_ENABLE_LOCKING_STYLE && defined(__APPLE__) -

5708 /* -

5709 ** Routine to transform a unixFile into a proxy-locking unixFile. -

5710 ** Implementation in the proxy-lock division, but used by unixOpen() -

5711 ** if SQLITE_PREFER_PROXY_LOCKING is defined. -

5712 */ -

5713 static int proxyTransformUnixFile(unixFile*, const char*); -

5714 #endif -

5715 -

5716 /* -

5717 ** Search for an unused file descriptor that was opened on the database -

5718 ** file (not a journal or master-journal file) identified by pathname -

5719 ** zPath with SQLITE_OPEN_XXX flags matching those passed as the second -

5720 ** argument to this function. -

5721 ** -

5722 ** Such a file descriptor may exist if a database connection was closed -

5723 ** but the associated file descriptor could not be closed because some -

5724 ** other file descriptor open on the same file is holding a file-lock. -

5725 ** Refer to comments in the unixClose() function and the lengthy comment -

5726 ** describing "Posix Advisory Locking" at the start of this file for -

5727 ** further details. Also, ticket #4018. -

5728 ** -

5729 ** If a suitable file descriptor is found, then it is returned. If no -

5730 ** such file descriptor is located, -1 is returned. -

5731 */ -

5732 static UnixUnusedFd *findReusableFd(const char *zPath, int flags){ -

5733 UnixUnusedFd *pUnused = 0; -

5734 -

5735 /* Do not search for an unused file descriptor on vxworks. Not because -

5736 ** vxworks would not benefit from the change (it might, we're not sure), -

5737 ** but because no way to test it is currently available. It is better -

5738 ** not to risk breaking vxworks support for the sake of such an obscure -

5739 ** feature. */ -

5740 #if !OS_VXWORKS -

5741 struct stat sStat; /* Results of stat() call */ -

5742 -

5743 unixEnterMutex(); -

5744 -

5745 /* A stat() call may fail for various reasons. If this happens, it is -

5746 ** almost certain that an open() call on the same path will also fail. -

5747 ** For this reason, if an error occurs in the stat() call here, it is -

5748 ** ignored and -1 is returned. The caller will try to open a new file -

5749 ** descriptor on the same path, fail, and return an error to SQLite. -

5750 ** -

5751 ** Even if a subsequent open() call does succeed, the consequences of -

5752 ** not searching for a reusable file descriptor are not dire. */ -

5753

if( inodeList!=0 && 0==osStat(zPath, &sStat) ){

inodeList!=0

Description

TRUE

evaluated 22737 times by 13 tests

Evaluated by:

Self test (27)
Self test (31)
Self test (34)
Self test (4)
Self test (438)
Self test (5)
Self test (77)
Self test (78)
Self test (79)
Self test (80)
Self test (81)
Self test (82)
Self test (83)

FALSE

evaluated 10000 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

0==((int(*)(co...zPath, &sStat)	Description
TRUE	evaluated 21171 times by 13 tests Evaluated by: Self test (27) Self test (31) Self test (34) Self test (4) Self test (438) Self test (5) Self test (77) Self test (78) Self test (79) Self test (80) Self test (81) Self test (82) Self test (83)
FALSE	evaluated 1566 times by 1 test Evaluated by: Self test (438)

1566-22737

5754 unixInodeInfo *pInode; -

5755 -

5756 pInode = inodeList; -

5757

while( pInode && (pInode->fileId.dev!=sStat.st_dev

pInode	Description
TRUE	evaluated 87020 times by 13 tests Evaluated by: Self test (27) Self test (31) Self test (34) Self test (4) Self test (438) Self test (5) Self test (77) Self test (78) Self test (79) Self test (80) Self test (81) Self test (82) Self test (83)
FALSE	evaluated 9055 times by 13 tests Evaluated by: Self test (27) Self test (31) Self test (34) Self test (4) Self test (438) Self test (5) Self test (77) Self test (78) Self test (79) Self test (80) Self test (81) Self test (82) Self test (83)

pInode->fileId...!=sStat.st_dev	Description
TRUE	never evaluated
FALSE	evaluated 87020 times by 13 tests Evaluated by: Self test (27) Self test (31) Self test (34) Self test (4) Self test (438) Self test (5) Self test (77) Self test (78) Self test (79) Self test (80) Self test (81) Self test (82) Self test (83)

0-87020

5758

|| pInode->fileId.ino!=(u64)sStat.st_ino) ){

pInode->fileId...4)sStat.st_ino	Description
TRUE	evaluated 74904 times by 13 tests Evaluated by: Self test (27) Self test (31) Self test (34) Self test (4) Self test (438) Self test (5) Self test (77) Self test (78) Self test (79) Self test (80) Self test (81) Self test (82) Self test (83)
FALSE	evaluated 12116 times by 1 test Evaluated by: Self test (438)

12116-74904

5759 pInode = pInode->pNext; -

5760

}

executed 74904 times by 13 tests: end of block

Executed by:

Self test (27)
Self test (31)
Self test (34)
Self test (4)
Self test (438)
Self test (5)
Self test (77)
Self test (78)
Self test (79)
Self test (80)
Self test (81)
Self test (82)
Self test (83)

74904

5761

if( pInode ){

pInode	Description
TRUE	evaluated 12116 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 9055 times by 13 tests Evaluated by: Self test (27) Self test (31) Self test (34) Self test (4) Self test (438) Self test (5) Self test (77) Self test (78) Self test (79) Self test (80) Self test (81) Self test (82) Self test (83)

9055-12116

5762 UnixUnusedFd **pp; -

5763 assert( sqlite3_mutex_notheld(pInode->pLockMutex) ); -

5764 sqlite3_mutex_enter(pInode->pLockMutex); -

5765

for(pp=&pInode->pUnused; *pp && (*pp)->flags!=flags; pp=&((*pp)->pNext));

executed 1 time by 1 test: ;

Executed by:

Self test (438)

*pp	Description
TRUE	evaluated 10081 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 2036 times by 1 test Evaluated by: Self test (438)

(*pp)->flags!=flags	Description
TRUE	evaluated 1 time by 1 test Evaluated by: Self test (438)
FALSE	evaluated 10080 times by 1 test Evaluated by: Self test (438)

1-10081

5766 pUnused = *pp; -

5767

if( pUnused ){

pUnused	Description
TRUE	evaluated 10080 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 2036 times by 1 test Evaluated by: Self test (438)

2036-10080

5768 *pp = pUnused->pNext; -

5769

}

executed 10080 times by 1 test: end of block

Executed by:

Self test (438)

10080

5770 sqlite3_mutex_leave(pInode->pLockMutex); -

5771

}

executed 12116 times by 1 test: end of block

Executed by:

Self test (438)

12116

5772

}

executed 21171 times by 13 tests: end of block

Executed by:

Self test (27)
Self test (31)
Self test (34)
Self test (4)
Self test (438)
Self test (5)
Self test (77)
Self test (78)
Self test (79)
Self test (80)
Self test (81)
Self test (82)
Self test (83)

21171

5773 unixLeaveMutex(); -

5774 #endif /* if !OS_VXWORKS */ -

5775

return pUnused;

executed 32737 times by 438 tests: return pUnused;

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

32737

5776 } -

5777 -

5778 /* -

5779 ** Find the mode, uid and gid of file zFile. -

5780 */ -

5781 static int getFileMode( -

5782 const char *zFile, /* File name */ -

5783 mode_t *pMode, /* OUT: Permissions of zFile */ -

5784 uid_t *pUid, /* OUT: uid of zFile. */ -

5785 gid_t *pGid /* OUT: gid of zFile. */ -

5786 ){ -

5787 struct stat sStat; /* Output of stat() on database file */ -

5788 int rc = SQLITE_OK; -

5789

if( 0==osStat(zFile, &sStat) ){

0==((int(*)(co...zFile, &sStat)

Description

TRUE

evaluated 44639 times by 425 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

FALSE

never evaluated

0-44639

5790 *pMode = sStat.st_mode & 0777; -

5791 *pUid = sStat.st_uid; -

5792 *pGid = sStat.st_gid; -

5793

}else{

executed 44639 times by 425 tests: end of block

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

44639

5794 rc = SQLITE_IOERR_FSTAT; -

5795

}

never executed: end of block

5796

return rc;

executed 44639 times by 425 tests: return rc;

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

44639

5797 } -

5798 -

5799 /* -

5800 ** This function is called by unixOpen() to determine the unix permissions -

5801 ** to create new files with. If no error occurs, then SQLITE_OK is returned -

5802 ** and a value suitable for passing as the third argument to open(2) is -

5803 ** written to *pMode. If an IO error occurs, an SQLite error code is -

5804 ** returned and the value of *pMode is not modified. -

5805 ** -

5806 ** In most cases, this routine sets *pMode to 0, which will become -

5807 ** an indication to robust_open() to create the file using -

5808 ** SQLITE_DEFAULT_FILE_PERMISSIONS adjusted by the umask. -

5809 ** But if the file being opened is a WAL or regular journal file, then -

5810 ** this function queries the file-system for the permissions on the -

5811 ** corresponding database file and sets *pMode to this value. Whenever -

5812 ** possible, WAL and journal files are created using the same permissions -

5813 ** as the associated database file. -

5814 ** -

5815 ** If the SQLITE_ENABLE_8_3_NAMES option is enabled, then the -

5816 ** original filename is unavailable. But 8_3_NAMES is only used for -

5817 ** FAT filesystems and permissions do not matter there, so just use -

5818 ** the default permissions. -

5819 */ -

5820 static int findCreateFileMode( -

5821 const char *zPath, /* Path of file (possibly) being created */ -

5822 int flags, /* Flags passed as 4th argument to xOpen() */ -

5823 mode_t *pMode, /* OUT: Permissions to open file with */ -

5824 uid_t *pUid, /* OUT: uid to set on the file */ -

5825 gid_t *pGid /* OUT: gid to set on the file */ -

5826 ){ -

5827 int rc = SQLITE_OK; /* Return Code */ -

5828 *pMode = 0; -

5829 *pUid = 0; -

5830 *pGid = 0; -

5831

if( flags & (SQLITE_OPEN_WAL|SQLITE_OPEN_MAIN_JOURNAL) ){

flags & (0x000...00|0x00000800)

Description

TRUE

evaluated 44640 times by 425 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

FALSE

evaluated 23015 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

23015-44640

5832 char zDb[MAX_PATHNAME+1]; /* Database file path */ -

5833 int nDb; /* Number of valid bytes in zDb */ -

5834 -

5835 /* zPath is a path to a WAL or journal file. The following block derives -

5836 ** the path to the associated database file from zPath. This block handles -

5837 ** the following naming conventions: -

5838 ** -

5839 ** "<path to db>-journal" -

5840 ** "<path to db>-wal" -

5841 ** "<path to db>-journalNN" -

5842 ** "<path to db>-walNN" -

5843 ** -

5844 ** where NN is a decimal number. The NN naming schemes are -

5845 ** used by the test_multiplex.c module. -

5846 */ -

5847 nDb = sqlite3Strlen30(zPath) - 1; -

5848

while( zPath[nDb]!='-' ){

zPath[nDb]!='-'

Description

TRUE

evaluated 306910 times by 425 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

FALSE

evaluated 44639 times by 425 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

44639-306910

5849 /* In normal operation, the journal file name will always contain -

5850 ** a '-' character. However in 8+3 filename mode, or if a corrupt -

5851 ** rollback journal specifies a master journal with a goofy name, then -

5852 ** the '-' might be missing. */ -

5853

if( nDb==0 || zPath[nDb]=='.' ) return SQLITE_OK;

executed 1 time by 1 test: return 0;

Executed by:

Self test (438)

nDb==0

Description

TRUE

evaluated 1 time by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 306909 times by 425 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

zPath[nDb]=='.'

Description

TRUE

never evaluated

FALSE

evaluated 306909 times by 425 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

0-306909

5854 nDb--; -

5855

}

executed 306909 times by 425 tests: end of block

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

306909

5856 memcpy(zDb, zPath, nDb); -

5857 zDb[nDb] = '\0'; -

5858 -

5859 rc = getFileMode(zDb, pMode, pUid, pGid); -

5860

}else if( flags & SQLITE_OPEN_DELETEONCLOSE ){

executed 44639 times by 425 tests: end of block

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

flags & 0x00000008

Description

TRUE

evaluated 275 times by 3 tests

Evaluated by:

Self test (438)
Self test (54)
Self test (64)

FALSE

evaluated 22740 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

275-44639

5861 *pMode = 0600; -

5862

}else if( flags & SQLITE_OPEN_URI ){

executed 275 times by 3 tests: end of block

Executed by:

Self test (438)
Self test (54)
Self test (64)

flags & 0x00000040

Description

TRUE

evaluated 165 times by 4 tests

Evaluated by:

Self test (103)
Self test (104)
Self test (438)
Self test (61)

FALSE

evaluated 22575 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

165-22575

5863 /* If this is a main database file and the file was opened using a URI -

5864 ** filename, check for the "modeof" parameter. If present, interpret -

5865 ** its value as a filename and try to copy the mode, uid and gid from -

5866 ** that file. */ -

5867 const char *z = sqlite3_uri_parameter(zPath, "modeof"); -

5868

if( z ){

z	Description
TRUE	never evaluated
FALSE	evaluated 165 times by 4 tests Evaluated by: Self test (103) Self test (104) Self test (438) Self test (61)

0-165

5869 rc = getFileMode(z, pMode, pUid, pGid); -

5870

}

never executed: end of block

5871

}

executed 165 times by 4 tests: end of block

Executed by:

Self test (103)
Self test (104)
Self test (438)
Self test (61)

165

5872

return rc;

executed 67655 times by 438 tests: return rc;

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

67655

5873 } -

5874 -

5875 /* -

5876 ** Open the file zPath. -

5877 ** -

5878 ** Previously, the SQLite OS layer used three functions in place of this -

5879 ** one: -

5880 ** -

5881 ** sqlite3OsOpenReadWrite(); -

5882 ** sqlite3OsOpenReadOnly(); -

5883 ** sqlite3OsOpenExclusive(); -

5884 ** -

5885 ** These calls correspond to the following combinations of flags: -

5886 ** -

5887 ** ReadWrite() -> (READWRITE | CREATE) -

5888 ** ReadOnly() -> (READONLY) -

5889 ** OpenExclusive() -> (READWRITE | CREATE | EXCLUSIVE) -

5890 ** -

5891 ** The old OpenExclusive() accepted a boolean argument - "delFlag". If -

5892 ** true, the file was configured to be automatically deleted when the -

5893 ** file handle closed. To achieve the same effect using this new -

5894 ** interface, add the DELETEONCLOSE flag to those specified above for -

5895 ** OpenExclusive(). -

5896 */ -

5897 static int unixOpen( -

5898 sqlite3_vfs *pVfs, /* The VFS for which this is the xOpen method */ -

5899 const char *zPath, /* Pathname of file to be opened */ -

5900 sqlite3_file *pFile, /* The file descriptor to be filled in */ -

5901 int flags, /* Input flags to control the opening */ -

5902 int *pOutFlags /* Output flags returned to SQLite core */ -

5903 ){ -

5904 unixFile *p = (unixFile *)pFile; -

5905 int fd = -1; /* File descriptor returned by open() */ -

5906 int openFlags = 0; /* Flags to pass to open() */ -

5907 int eType = flags&0xFFFFFF00; /* Type of file to open */ -

5908 int noLock; /* True to omit locking primitives */ -

5909 int rc = SQLITE_OK; /* Function Return Code */ -

5910 int ctrlFlags = 0; /* UNIXFILE_* flags */ -

5911 -

5912 int isExclusive = (flags & SQLITE_OPEN_EXCLUSIVE); -

5913 int isDelete = (flags & SQLITE_OPEN_DELETEONCLOSE); -

5914 int isCreate = (flags & SQLITE_OPEN_CREATE); -

5915 int isReadonly = (flags & SQLITE_OPEN_READONLY); -

5916 int isReadWrite = (flags & SQLITE_OPEN_READWRITE); -

5917 #if SQLITE_ENABLE_LOCKING_STYLE -

5918 int isAutoProxy = (flags & SQLITE_OPEN_AUTOPROXY); -

5919 #endif -

5920 #if defined(__APPLE__) || SQLITE_ENABLE_LOCKING_STYLE -

5921 struct statfs fsInfo; -

5922 #endif -

5923 -

5924 /* If creating a master or main-file journal, this function will open -

5925 ** a file-descriptor on the directory too. The first time unixSync() -

5926 ** is called the directory file descriptor will be fsync()ed and close()d. -

5927 */ -

5928

int isNewJrnl = (isCreate && (

isCreate

Description

TRUE

evaluated 64756 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

FALSE

evaluated 12990 times by 254 tests

Evaluated by:

Self test (108)
Self test (109)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
Self test (124)
Self test (125)
Self test (126)
Self test (127)
Self test (128)
Self test (129)
Self test (130)
Self test (131)
Self test (132)
...

12990-64756

5929

eType==SQLITE_OPEN_MASTER_JOURNAL

eType==0x00004000

Description

TRUE

evaluated 62 times by 3 tests

Evaluated by:

Self test (4)
Self test (438)
Self test (5)

FALSE

evaluated 64694 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

62-64694

5930

|| eType==SQLITE_OPEN_MAIN_JOURNAL

eType==0x00000800

Description

TRUE

evaluated 40332 times by 380 tests

Evaluated by:

Self test
Self test (10)
Self test (101)
Self test (104)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
Self test (124)
...

FALSE

evaluated 24362 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

24362-40332

5931

|| eType==SQLITE_OPEN_WAL

eType==0x00080000

Description

TRUE

evaluated 1392 times by 49 tests

Evaluated by:

Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (28)
Self test (29)
Self test (37)
Self test (41)
Self test (438)
Self test (50)
Self test (51)
Self test (62)
Self test (63)
Self test (64)
Self test (65)
Self test (66)
Self test (67)
Self test (68)
Self test (69)
Self test (70)
Self test (71)
Self test (72)
Self test (73)
Self test (74)
...

FALSE

evaluated 22970 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

1392-22970

5932 )); -

5933 -

5934 /* If argument zPath is a NULL pointer, this function is required to open -

5935 ** a temporary file. Use this buffer to store the file name in. -

5936 */ -

5937 char zTmpname[MAX_PATHNAME+2]; -

5938 const char *zName = zPath; -

5939 -

5940 /* Check the following statements are true: -

5941 ** -

5942 ** (a) Exactly one of the READWRITE and READONLY flags must be set, and -

5943 ** (b) if CREATE is set, then READWRITE must also be set, and -

5944 ** (c) if EXCLUSIVE is set, then CREATE must also be set. -

5945 ** (d) if DELETEONCLOSE is set, then CREATE must also be set. -

5946 */ -

5947 assert((isReadonly==0 || isReadWrite==0) && (isReadWrite || isReadonly)); -

5948 assert(isCreate==0 || isReadWrite); -

5949 assert(isExclusive==0 || isCreate); -

5950 assert(isDelete==0 || isCreate); -

5951 -

5952 /* The main DB, main journal, WAL file and master journal are never -

5953 ** automatically deleted. Nor are they ever temporary files. */ -

5954 assert( (!isDelete && zName) || eType!=SQLITE_OPEN_MAIN_DB ); -

5955 assert( (!isDelete && zName) || eType!=SQLITE_OPEN_MAIN_JOURNAL ); -

5956 assert( (!isDelete && zName) || eType!=SQLITE_OPEN_MASTER_JOURNAL ); -

5957 assert( (!isDelete && zName) || eType!=SQLITE_OPEN_WAL ); -

5958 -

5959 /* Assert that the upper layer has set one of the "file-type" flags. */ -

5960 assert( eType==SQLITE_OPEN_MAIN_DB || eType==SQLITE_OPEN_TEMP_DB -

5961 || eType==SQLITE_OPEN_MAIN_JOURNAL || eType==SQLITE_OPEN_TEMP_JOURNAL -

5962 || eType==SQLITE_OPEN_SUBJOURNAL || eType==SQLITE_OPEN_MASTER_JOURNAL -

5963 || eType==SQLITE_OPEN_TRANSIENT_DB || eType==SQLITE_OPEN_WAL -

5964 ); -

5965 -

5966 /* Detect a pid change and reset the PRNG. There is a race condition -

5967 ** here such that two or more threads all trying to open databases at -

5968 ** the same instant might all reset the PRNG. But multiple resets -

5969 ** are harmless. -

5970 */ -

5971

if( randomnessPid!=osGetpid(0) ){

randomnessPid!=(pid_t)getpid()

Description

TRUE

evaluated 438 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

FALSE

evaluated 77308 times by 427 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

438-77308

5972 randomnessPid = osGetpid(0); -

5973 sqlite3_randomness(0,0); -

5974

}

executed 438 times by 438 tests: end of block

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

438

5975 memset(p, 0, sizeof(unixFile)); -

5976 -

5977

if( eType==SQLITE_OPEN_MAIN_DB ){

eType==0x00000100

Description

TRUE

evaluated 32737 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

FALSE

evaluated 45009 times by 425 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

32737-45009

5978 UnixUnusedFd *pUnused; -

5979 pUnused = findReusableFd(zName, flags); -

5980

if( pUnused ){

pUnused

Description

TRUE

evaluated 10080 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 22657 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

10080-22657

5981 fd = pUnused->fd; -

5982

}else{

executed 10080 times by 1 test: end of block

Executed by:

Self test (438)

10080

5983 pUnused = sqlite3_malloc64(sizeof(*pUnused)); -

5984

if( !pUnused ){

!pUnused

Description

TRUE

evaluated 8 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 22649 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

8-22649

5985

return SQLITE_NOMEM_BKPT;

executed 8 times by 1 test: return 7;

Executed by:

Self test (438)

5986 } -

5987

}

executed 22649 times by 438 tests: end of block

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

22649

5988 p->pPreallocatedUnused = pUnused; -

5989 -

5990 /* Database filenames are double-zero terminated if they are not -

5991 ** URIs with parameters. Hence, they can always be passed into -

5992 ** sqlite3_uri_parameter(). */ -

5993 assert( (flags & SQLITE_OPEN_URI) || zName[strlen(zName)+1]==0 ); -

5994 -

5995

}else if( !zName ){

executed 32729 times by 438 tests: end of block

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

!zName

Description

TRUE

evaluated 278 times by 3 tests

Evaluated by:

Self test (438)
Self test (54)
Self test (64)

FALSE

evaluated 44731 times by 425 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

278-44731

5996 /* If zName is NULL, the upper layer is requesting a temp file. */ -

5997 assert(isDelete && !isNewJrnl); -

5998 rc = unixGetTempname(pVfs->mxPathname, zTmpname); -

5999

if( rc!=SQLITE_OK ){

rc!=0	Description
TRUE	never evaluated
FALSE	evaluated 275 times by 3 tests Evaluated by: Self test (438) Self test (54) Self test (64)

0-275

6000

return rc;

never executed: return rc;

6001 } -

6002 zName = zTmpname; -

6003 -

6004 /* Generated temporary filenames are always double-zero terminated -

6005 ** for use by sqlite3_uri_parameter(). */ -

6006 assert( zName[strlen(zName)+1]==0 ); -

6007

}

executed 275 times by 3 tests: end of block

Executed by:

Self test (438)
Self test (54)
Self test (64)

275

6008 -

6009 /* Determine the value of the flags parameter passed to POSIX function -

6010 ** open(). These must be calculated even if open() is not called, as -

6011 ** they may be stored as part of the file handle and used by the -

6012 ** 'conch file' locking functions later on. */ -

6013

if( isReadonly ) openFlags |= O_RDONLY;

executed 12562 times by 253 tests: openFlags |= 00 ;

Executed by:

Self test (108)
Self test (109)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
Self test (124)
Self test (125)
Self test (126)
Self test (127)
Self test (128)
Self test (129)
Self test (130)
Self test (131)
Self test (132)
...

isReadonly

Description

TRUE

evaluated 12562 times by 253 tests

Evaluated by:

Self test (108)
Self test (109)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
Self test (124)
Self test (125)
Self test (126)
Self test (127)
Self test (128)
Self test (129)
Self test (130)
Self test (131)
Self test (132)
...

FALSE

evaluated 65173 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

12562-65173

6014

if( isReadWrite ) openFlags |= O_RDWR;

executed 65173 times by 438 tests: openFlags |= 02 ;

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

isReadWrite

Description

TRUE

evaluated 65173 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

FALSE

evaluated 12562 times by 253 tests

Evaluated by:

Self test (108)
Self test (109)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
Self test (124)
Self test (125)
Self test (126)
Self test (127)
Self test (128)
Self test (129)
Self test (130)
Self test (131)
Self test (132)
...

12562-65173

6015

if( isCreate ) openFlags |= O_CREAT;

executed 64745 times by 438 tests: openFlags |= 0100 ;

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

isCreate

Description

TRUE

evaluated 64745 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

FALSE

evaluated 12990 times by 254 tests

Evaluated by:

Self test (108)
Self test (109)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
Self test (124)
Self test (125)
Self test (126)
Self test (127)
Self test (128)
Self test (129)
Self test (130)
Self test (131)
Self test (132)
...

12990-64745

6016

if( isExclusive ) openFlags |= (O_EXCL|O_NOFOLLOW);

executed 330 times by 5 tests: openFlags |= ( 0200 | 0400000 );

Executed by:

Self test (4)
Self test (438)
Self test (5)
Self test (54)
Self test (64)

isExclusive

Description

TRUE

evaluated 331 times by 5 tests

Evaluated by:

Self test (4)
Self test (438)
Self test (5)
Self test (54)
Self test (64)

FALSE

evaluated 77405 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

330-77405

6017 openFlags |= (O_LARGEFILE|O_BINARY); -

6018 -

6019

if( fd<0 ){

fd<0

Description

TRUE

evaluated 67655 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

FALSE

evaluated 10080 times by 1 test

Evaluated by:

Self test (438)

10080-67655

6020 mode_t openMode; /* Permissions to create file with */ -

6021 uid_t uid; /* Userid for the file */ -

6022 gid_t gid; /* Groupid for the file */ -

6023 rc = findCreateFileMode(zName, flags, &openMode, &uid, &gid); -

6024

if( rc!=SQLITE_OK ){

rc!=0

Description

TRUE

never evaluated

FALSE

evaluated 67656 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

0-67656

6025 assert( !p->pPreallocatedUnused ); -

6026 assert( eType==SQLITE_OPEN_WAL || eType==SQLITE_OPEN_MAIN_JOURNAL ); -

6027

return rc;

never executed: return rc;

6028 } -

6029 fd = robust_open(zName, openFlags, openMode); -

6030

OSTRACE(("OPENX %-3d %s 0%o\n", fd, zName, openFlags));

never executed: sqlite3DebugPrintf ("OPENX %-3d %s 0%o\n", fd, zName, openFlags);

sqlite3OSTrace

Description

TRUE

never evaluated

FALSE

evaluated 67658 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

0-67658

6031 assert( !isExclusive || (openFlags & O_CREAT)!=0 ); -

6032

if( fd<0 ){

fd<0

Description

TRUE

evaluated 492 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 67166 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

492-67166

6033

if( isNewJrnl && errno==EACCES && osAccess(zName, F_OK) ){

isNewJrnl	Description
TRUE	evaluated 3 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 489 times by 1 test Evaluated by: Self test (438)

(*__errno_location ()) == 13	Description
TRUE	evaluated 3 times by 1 test Evaluated by: Self test (438)
FALSE	never evaluated

((int(*)(const...nt)(zName, 0 )	Description
TRUE	never evaluated
FALSE	evaluated 3 times by 1 test Evaluated by: Self test (438)

0-489

6034 /* If unable to create a journal because the directory is not -

6035 ** writable, change the error code to indicate that. */ -

6036 rc = SQLITE_READONLY_DIRECTORY; -

6037

}else if( errno!=EISDIR && isReadWrite ){

never executed: end of block

(*__errno_location ()) != 21	Description
TRUE	evaluated 489 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 3 times by 1 test Evaluated by: Self test (438)

isReadWrite	Description
TRUE	evaluated 33 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 456 times by 1 test Evaluated by: Self test (438)

0-489

6038 /* Failed to open the file for read/write access. Try read-only. */ -

6039 flags &= ~(SQLITE_OPEN_READWRITE|SQLITE_OPEN_CREATE); -

6040 openFlags &= ~(O_RDWR|O_CREAT); -

6041 flags |= SQLITE_OPEN_READONLY; -

6042 openFlags |= O_RDONLY; -

6043 isReadonly = 1; -

6044 fd = robust_open(zName, openFlags, openMode); -

6045

}

executed 33 times by 1 test: end of block

Executed by:

Self test (438)

6046

}

executed 492 times by 1 test: end of block

Executed by:

Self test (438)

492

6047

if( fd<0 ){

fd<0

Description

TRUE

evaluated 483 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 67175 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

483-67175

6048 int rc2 = unixLogError(SQLITE_CANTOPEN_BKPT, "open", zName); -

6049

if( rc==SQLITE_OK ) rc = rc2;

executed 483 times by 1 test: rc = rc2;

Executed by:

Self test (438)

rc==0	Description
TRUE	evaluated 483 times by 1 test Evaluated by: Self test (438)
FALSE	never evaluated

0-483

6050

goto open_finished;

executed 483 times by 1 test: goto open_finished;

Executed by:

Self test (438)

483

6051 } -

6052 -

6053 /* If this process is running as root and if creating a new rollback -

6054 ** journal or WAL file, set the ownership of the journal or WAL to be -

6055 ** the same as the original database. -

6056 */ -

6057

if( flags & (SQLITE_OPEN_WAL|SQLITE_OPEN_MAIN_JOURNAL) ){

flags & (0x000...00|0x00000800)

Description

TRUE

evaluated 44634 times by 425 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

FALSE

evaluated 22541 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

22541-44634

6058 robustFchown(fd, uid, gid); -

6059

}

executed 44634 times by 425 tests: end of block

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

44634

6060

}

executed 67175 times by 438 tests: end of block

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

67175

6061 assert( fd>=0 ); -

6062

if( pOutFlags ){

pOutFlags

Description

TRUE

evaluated 36606 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

FALSE

evaluated 40649 times by 381 tests

Evaluated by:

Self test
Self test (10)
Self test (101)
Self test (104)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
Self test (124)
...

36606-40649

6063 *pOutFlags = flags; -

6064

}

executed 36606 times by 438 tests: end of block

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

36606

6065 -

6066

if( p->pPreallocatedUnused ){

p->pPreallocatedUnused

Description

TRUE

evaluated 32252 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

FALSE

evaluated 45003 times by 425 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

32252-45003

6067 p->pPreallocatedUnused->fd = fd; -

6068 p->pPreallocatedUnused->flags = flags; -

6069

}

executed 32252 times by 438 tests: end of block

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

32252

6070 -

6071

if( isDelete ){

isDelete

Description

TRUE

evaluated 278 times by 3 tests

Evaluated by:

Self test (438)
Self test (54)
Self test (64)

FALSE

evaluated 76977 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

278-76977

6072 #if OS_VXWORKS -

6073 zPath = zName; -

6074 #elif defined(SQLITE_UNLINK_AFTER_CLOSE) -

6075 zPath = sqlite3_mprintf("%s", zName); -

6076 if( zPath==0 ){ -

6077 robust_close(p, fd, __LINE__); -

6078 return SQLITE_NOMEM_BKPT; -

6079 } -

6080 #else -

6081 osUnlink(zName); -

6082 #endif -

6083

}

executed 278 times by 3 tests: end of block

Executed by:

Self test (438)
Self test (54)
Self test (64)

278

6084 #if SQLITE_ENABLE_LOCKING_STYLE -

6085 else{ -

6086 p->openFlags = openFlags; -

6087 } -

6088 #endif -

6089 -

6090 #if defined(__APPLE__) || SQLITE_ENABLE_LOCKING_STYLE -

6091 if( fstatfs(fd, &fsInfo) == -1 ){ -

6092 storeLastErrno(p, errno); -

6093 robust_close(p, fd, __LINE__); -

6094 return SQLITE_IOERR_ACCESS; -

6095 } -

6096 if (0 == strncmp("msdos", fsInfo.f_fstypename, 5)) { -

6097 ((unixFile*)pFile)->fsFlags |= SQLITE_FSFLAGS_IS_MSDOS; -

6098 } -

6099 if (0 == strncmp("exfat", fsInfo.f_fstypename, 5)) { -

6100 ((unixFile*)pFile)->fsFlags |= SQLITE_FSFLAGS_IS_MSDOS; -

6101 } -

6102 #endif -

6103 -

6104 /* Set up appropriate ctrlFlags */ -

6105

if( isDelete ) ctrlFlags |= UNIXFILE_DELETE;

executed 278 times by 3 tests: ctrlFlags |= 0x20;

Executed by:

Self test (438)
Self test (54)
Self test (64)

isDelete

Description

TRUE

evaluated 278 times by 3 tests

Evaluated by:

Self test (438)
Self test (54)
Self test (64)

FALSE

evaluated 76977 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

278-76977

6106

if( isReadonly ) ctrlFlags |= UNIXFILE_RDONLY;

executed 12115 times by 253 tests: ctrlFlags |= 0x02;

Executed by:

Self test (108)
Self test (109)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
Self test (124)
Self test (125)
Self test (126)
Self test (127)
Self test (128)
Self test (129)
Self test (130)
Self test (131)
Self test (132)
...

isReadonly

Description

TRUE

evaluated 12115 times by 253 tests

Evaluated by:

Self test (108)
Self test (109)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
Self test (124)
Self test (125)
Self test (126)
Self test (127)
Self test (128)
Self test (129)
Self test (130)
Self test (131)
Self test (132)
...

FALSE

evaluated 65140 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

12115-65140

6107 noLock = eType!=SQLITE_OPEN_MAIN_DB; -

6108

if( noLock ) ctrlFlags |= UNIXFILE_NOLOCK;

executed 45003 times by 425 tests: ctrlFlags |= 0x80;

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

noLock

Description

TRUE

evaluated 45003 times by 425 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

FALSE

evaluated 32252 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

32252-45003

6109

if( isNewJrnl ) ctrlFlags |= UNIXFILE_DIRSYNC;

executed 41784 times by 425 tests: ctrlFlags |= 0x08;

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

isNewJrnl

Description

TRUE

evaluated 41784 times by 425 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

FALSE

evaluated 35471 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

35471-41784

6110

if( flags & SQLITE_OPEN_URI ) ctrlFlags |= UNIXFILE_URI;

executed 152 times by 4 tests: ctrlFlags |= 0x40;

Executed by:

Self test (103)
Self test (104)
Self test (438)
Self test (61)

flags & 0x00000040

Description

TRUE

evaluated 152 times by 4 tests

Evaluated by:

Self test (103)
Self test (104)
Self test (438)
Self test (61)

FALSE

evaluated 77103 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

152-77103

6111 -

6112 #if SQLITE_ENABLE_LOCKING_STYLE -

6113 #if SQLITE_PREFER_PROXY_LOCKING -

6114 isAutoProxy = 1; -

6115 #endif -

6116 if( isAutoProxy && (zPath!=NULL) && (!noLock) && pVfs->xOpen ){ -

6117 char *envforce = getenv("SQLITE_FORCE_PROXY_LOCKING"); -

6118 int useProxy = 0; -

6119 -

6120 /* SQLITE_FORCE_PROXY_LOCKING==1 means force always use proxy, 0 means -

6121 ** never use proxy, NULL means use proxy for non-local files only. */ -

6122 if( envforce!=NULL ){ -

6123 useProxy = atoi(envforce)>0; -

6124 }else{ -

6125 useProxy = !(fsInfo.f_flags&MNT_LOCAL); -

6126 } -

6127 if( useProxy ){ -

6128 rc = fillInUnixFile(pVfs, fd, pFile, zPath, ctrlFlags); -

6129 if( rc==SQLITE_OK ){ -

6130 rc = proxyTransformUnixFile((unixFile*)pFile, ":auto:"); -

6131 if( rc!=SQLITE_OK ){ -

6132 /* Use unixClose to clean up the resources added in fillInUnixFile -

6133 ** and clear all the structure's references. Specifically, -

6134 ** pFile->pMethods will be NULL so sqlite3OsClose will be a no-op -

6135 */ -

6136 unixClose(pFile); -

6137 return rc; -

6138 } -

6139 } -

6140 goto open_finished; -

6141 } -

6142 } -

6143 #endif -

6144 -

6145 assert( zPath==0 || zPath[0]=='/' -

6146 || eType==SQLITE_OPEN_MASTER_JOURNAL || eType==SQLITE_OPEN_MAIN_JOURNAL -

6147 ); -

6148 rc = fillInUnixFile(pVfs, fd, pFile, zPath, ctrlFlags); -

6149 -

6150

open_finished:

code before this statement executed 77255 times by 438 tests: open_finished:

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

77255

6151

if( rc!=SQLITE_OK ){

rc!=0

Description

TRUE

evaluated 499 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 77239 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

499-77239

6152 sqlite3_free(p->pPreallocatedUnused); -

6153

}

executed 499 times by 1 test: end of block

Executed by:

Self test (438)

499

6154

return rc;

executed 77738 times by 438 tests: return rc;

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

77738

6155 } -

6156 -

6157 -

6158 /* -

6159 ** Delete the file at zPath. If the dirSync argument is true, fsync() -

6160 ** the directory after deleting the file. -

6161 */ -

6162 static int unixDelete( -

6163 sqlite3_vfs *NotUsed, /* VFS containing this as the xDelete method */ -

6164 const char *zPath, /* Name of file to be deleted */ -

6165 int dirSync /* If true, fsync() directory after deleting file */ -

6166 ){ -

6167 int rc = SQLITE_OK; -

6168 UNUSED_PARAMETER(NotUsed); -

6169

SimulateIOError(return SQLITE_IOERR_DELETE);

executed 8 times by 1 test: return (10 | (10<<8));

Executed by:

Self test (438)

sqlite3_io_error_persist

Description

TRUE

evaluated 21 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 40709 times by 43 tests

Evaluated by:

Self test
Self test (10)
Self test (101)
Self test (104)
Self test (105)
Self test (11)
Self test (14)
Self test (15)
Self test (18)
Self test (19)
Self test (2)
Self test (22)
Self test (23)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (38)
Self test (39)
Self test (40)
Self test (42)
...

sqlite3_io_error_hit	Description
TRUE	evaluated 2 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 19 times by 1 test Evaluated by: Self test (438)

sqlite3_io_err...pending-- == 1

Description

TRUE

evaluated 6 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 40722 times by 43 tests

Evaluated by:

Self test
Self test (10)
Self test (101)
Self test (104)
Self test (105)
Self test (11)
Self test (14)
Self test (15)
Self test (18)
Self test (19)
Self test (2)
Self test (22)
Self test (23)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (38)
Self test (39)
Self test (40)
Self test (42)
...

2-40722

6170

if( osUnlink(zPath)==(-1) ){

((int(*)(const...)(zPath)==(-1)

Description

TRUE

evaluated 6 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 40716 times by 43 tests

Evaluated by:

Self test
Self test (10)
Self test (101)
Self test (104)
Self test (105)
Self test (11)
Self test (14)
Self test (15)
Self test (18)
Self test (19)
Self test (2)
Self test (22)
Self test (23)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (38)
Self test (39)
Self test (40)
Self test (42)
...

6-40716

6171

if( errno==ENOENT

(*__errno_location ()) == 2	Description
TRUE	evaluated 5 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 1 time by 1 test Evaluated by: Self test (438)

1-5

6172 #if OS_VXWORKS -

6173 || osAccess(zPath,0)!=0 -

6174 #endif -

6175 ){ -

6176 rc = SQLITE_IOERR_DELETE_NOENT; -

6177

}else{

executed 5 times by 1 test: end of block

Executed by:

Self test (438)

6178 rc = unixLogError(SQLITE_IOERR_DELETE, "unlink", zPath); -

6179

}

executed 1 time by 1 test: end of block

Executed by:

Self test (438)

6180

return rc;

executed 6 times by 1 test: return rc;

Executed by:

Self test (438)

6181 } -

6182 #ifndef SQLITE_DISABLE_DIRSYNC -

6183

if( (dirSync & 1)!=0 ){

(dirSync & 1)!=0

Description

TRUE

evaluated 60 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 40656 times by 43 tests

Evaluated by:

Self test
Self test (10)
Self test (101)
Self test (104)
Self test (105)
Self test (11)
Self test (14)
Self test (15)
Self test (18)
Self test (19)
Self test (2)
Self test (22)
Self test (23)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (38)
Self test (39)
Self test (40)
Self test (42)
...

60-40656

6184 int fd; -

6185 rc = osOpenDirectory(zPath, &fd); -

6186

if( rc==SQLITE_OK ){

rc==0	Description
TRUE	evaluated 60 times by 1 test Evaluated by: Self test (438)
FALSE	never evaluated

0-60

6187

if( full_fsync(fd,0,0) ){

full_fsync(fd,0,0)	Description
TRUE	never evaluated
FALSE	evaluated 60 times by 1 test Evaluated by: Self test (438)

0-60

6188 rc = unixLogError(SQLITE_IOERR_DIR_FSYNC, "fsync", zPath); -

6189

}

never executed: end of block

6190 robust_close(0, fd, __LINE__); -

6191

}else{

executed 60 times by 1 test: end of block

Executed by:

Self test (438)

6192 assert( rc==SQLITE_CANTOPEN ); -

6193 rc = SQLITE_OK; -

6194

}

never executed: end of block

6195 } -

6196 #endif -

6197

return rc;

executed 40716 times by 43 tests: return rc;

Executed by:

Self test
Self test (10)
Self test (101)
Self test (104)
Self test (105)
Self test (11)
Self test (14)
Self test (15)
Self test (18)
Self test (19)
Self test (2)
Self test (22)
Self test (23)
Self test (24)
Self test (26)
Self test (27)
Self test (28)
Self test (31)
Self test (32)
Self test (33)
Self test (34)
Self test (38)
Self test (39)
Self test (40)
Self test (42)
...

40716

6198 } -

6199 -

6200 /* -

6201 ** Test the existence of or access permissions of file zPath. The -

6202 ** test performed depends on the value of flags: -

6203 ** -

6204 ** SQLITE_ACCESS_EXISTS: Return 1 if the file exists -

6205 ** SQLITE_ACCESS_READWRITE: Return 1 if the file is read and writable. -

6206 ** SQLITE_ACCESS_READONLY: Return 1 if the file is readable. -

6207 ** -

6208 ** Otherwise return 0. -

6209 */ -

6210 static int unixAccess( -

6211 sqlite3_vfs *NotUsed, /* The VFS containing this xAccess method */ -

6212 const char *zPath, /* Path of the file to examine */ -

6213 int flags, /* What do we want to learn about the zPath file? */ -

6214 int *pResOut /* Write result boolean here */ -

6215 ){ -

6216 UNUSED_PARAMETER(NotUsed); -

6217

SimulateIOError( return SQLITE_IOERR_ACCESS; );

executed 62 times by 1 test: return (10 | (13<<8));

Executed by:

Self test (438)

sqlite3_io_error_persist

Description

TRUE

evaluated 523 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 268200 times by 435 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

sqlite3_io_error_hit	Description
TRUE	never evaluated
FALSE	evaluated 523 times by 1 test Evaluated by: Self test (438)

sqlite3_io_err...pending-- == 1

Description

TRUE

evaluated 62 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 268661 times by 435 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

0-268661

6218 assert( pResOut!=0 ); -

6219 -

6220 /* The spec says there are three possible values for flags. But only -

6221 ** two of them are actually used */ -

6222 assert( flags==SQLITE_ACCESS_EXISTS || flags==SQLITE_ACCESS_READWRITE ); -

6223 -

6224

if( flags==SQLITE_ACCESS_EXISTS ){

flags==0

Description

TRUE

evaluated 268658 times by 435 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

FALSE

evaluated 3 times by 1 test

Evaluated by:

Self test (438)

3-268658

6225 struct stat buf; -

6226

*pResOut = (0==osStat(zPath, &buf) && buf.st_size>0);

0==((int(*)(co...)(zPath, &buf)

Description

TRUE

evaluated 4118 times by 298 tests

Evaluated by:

Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (107)
Self test (108)
Self test (109)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
Self test (124)
Self test (125)
Self test (126)
Self test (127)
...

FALSE

evaluated 264540 times by 435 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

buf.st_size>0

Description

TRUE

evaluated 3900 times by 293 tests

Evaluated by:

Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (108)
Self test (109)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (120)
Self test (121)
Self test (122)
Self test (123)
Self test (124)
Self test (125)
Self test (126)
Self test (127)
Self test (128)
...

FALSE

evaluated 218 times by 11 tests

Evaluated by:

Self test (101)
Self test (104)
Self test (107)
Self test (29)
Self test (41)
Self test (438)
Self test (5)
Self test (75)
Self test (80)
Self test (82)
Self test (86)

218-264540

6227

}else{

executed 268658 times by 435 tests: end of block

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

268658

6228 *pResOut = osAccess(zPath, W_OK|R_OK)==0; -

6229

}

executed 3 times by 1 test: end of block

Executed by:

Self test (438)

6230

return SQLITE_OK;

executed 268661 times by 435 tests: return 0;

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
...

268661

6231 } -

6232 -

6233 /* -

6234 ** -

6235 */ -

6236 static int mkFullPathname( -

6237 const char *zPath, /* Input path */ -

6238 char *zOut, /* Output buffer */ -

6239 int nOut /* Allocated size of buffer zOut */ -

6240 ){ -

6241 int nPath = sqlite3Strlen30(zPath); -

6242 int iOff = 0; -

6243

if( zPath[0]!='/' ){

zPath[0]!='/'

Description

TRUE

evaluated 33048 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

FALSE

evaluated 255 times by 1 test

Evaluated by:

Self test (438)

255-33048

6244

if( osGetcwd(zOut, nOut-2)==0 ){

((char*(*)(cha...ut, nOut-2)==0

Description

TRUE

never evaluated

FALSE

evaluated 33048 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

0-33048

6245

return unixLogError(SQLITE_CANTOPEN_BKPT, "getcwd", zPath);

never executed: return unixLogErrorAtLine(sqlite3CantopenError(6245),"getcwd",zPath,6245);

6246 } -

6247 iOff = sqlite3Strlen30(zOut); -

6248 zOut[iOff++] = '/'; -

6249

}

executed 33048 times by 438 tests: end of block

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

33048

6250

if( (iOff+nPath+1)>nOut ){

(iOff+nPath+1)>nOut

Description

TRUE

evaluated 6 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 33297 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

6-33297

6251 /* SQLite assumes that xFullPathname() nul-terminates the output buffer -

6252 ** even if it returns an error. */ -

6253 zOut[iOff] = '\0'; -

6254

return SQLITE_CANTOPEN_BKPT;

executed 6 times by 1 test: return sqlite3CantopenError(6254);

Executed by:

Self test (438)

6255 } -

6256 sqlite3_snprintf(nOut-iOff, &zOut[iOff], "%s", zPath); -

6257

return SQLITE_OK;

executed 33297 times by 438 tests: return 0;

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

33297

6258 } -

6259 -

6260 /* -

6261 ** Turn a relative pathname into a full pathname. The relative path -

6262 ** is stored as a nul-terminated string in the buffer pointed to by -

6263 ** zPath. -

6264 ** -

6265 ** zOut points to a buffer of at least sqlite3_vfs.mxPathname bytes -

6266 ** (in this case, MAX_PATHNAME bytes). The full-path is written to -

6267 ** this buffer before returning. -

6268 */ -

6269 static int unixFullPathname( -

6270 sqlite3_vfs *pVfs, /* Pointer to vfs object */ -

6271 const char *zPath, /* Possibly relative input path */ -

6272 int nOut, /* Size of output buffer in bytes */ -

6273 char *zOut /* Output buffer */ -

6274 ){ -

6275 #if !defined(HAVE_READLINK) || !defined(HAVE_LSTAT) -

6276 return mkFullPathname(zPath, zOut, nOut); -

6277 #else -

6278 int rc = SQLITE_OK; -

6279 int nByte; -

6280 int nLink = 1; /* Number of symbolic links followed so far */ -

6281 const char *zIn = zPath; /* Input path for each iteration of loop */ -

6282 char *zDel = 0; -

6283 -

6284 assert( pVfs->mxPathname==MAX_PATHNAME ); -

6285 UNUSED_PARAMETER(pVfs); -

6286 -

6287 /* It's odd to simulate an io-error here, but really this is just -

6288 ** using the io-error infrastructure to test that SQLite handles this -

6289 ** function failing. This function could fail if, for example, the -

6290 ** current working directory has been unlinked. -

6291 */ -

6292

SimulateIOError( return SQLITE_ERROR );

executed 8 times by 1 test: return 1;

Executed by:

Self test (438)

sqlite3_io_error_persist

Description

TRUE

evaluated 18 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 33195 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

sqlite3_io_error_hit	Description
TRUE	evaluated 1 time by 1 test Evaluated by: Self test (438)
FALSE	evaluated 17 times by 1 test Evaluated by: Self test (438)

sqlite3_io_err...pending-- == 1

Description

TRUE

evaluated 7 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 33205 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

1-33205

6293 -

6294 do { -

6295 -

6296 /* Call stat() on path zIn. Set bLink to true if the path is a symbolic -

6297 ** link, or false otherwise. */ -

6298 int bLink = 0; -

6299 struct stat buf; -

6300

if( osLstat(zIn, &buf)!=0 ){

((int(*)(const...(zIn, &buf)!=0

Description

TRUE

evaluated 5220 times by 3 tests

Evaluated by:

Self test (101)
Self test (104)
Self test (438)

FALSE

evaluated 28094 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

5220-28094

6301

if( errno!=ENOENT ){

(*__errno_location ()) != 2	Description
TRUE	evaluated 3 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 5217 times by 3 tests Evaluated by: Self test (101) Self test (104) Self test (438)

3-5217

6302 rc = unixLogError(SQLITE_CANTOPEN_BKPT, "lstat", zIn); -

6303

}

executed 3 times by 1 test: end of block

Executed by:

Self test (438)

6304

}else{

executed 5220 times by 3 tests: end of block

Executed by:

Self test (101)
Self test (104)
Self test (438)

5220

6305 bLink = S_ISLNK(buf.st_mode); -

6306

}

executed 28094 times by 438 tests: end of block

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

28094

6307 -

6308

if( bLink ){

bLink

Description

TRUE

evaluated 110 times by 1 test

Evaluated by:

Self test (438)

FALSE

evaluated 33204 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

110-33204

6309

if( zDel==0 ){

zDel==0	Description
TRUE	evaluated 8 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 102 times by 1 test Evaluated by: Self test (438)

8-102

6310 zDel = sqlite3_malloc(nOut); -

6311

if( zDel==0 ) rc = SQLITE_NOMEM_BKPT;

never executed: rc = 7;

zDel==0	Description
TRUE	never evaluated
FALSE	evaluated 8 times by 1 test Evaluated by: Self test (438)

0-8

6312

}else if( ++nLink>SQLITE_MAX_SYMLINKS ){

executed 8 times by 1 test: end of block

Executed by:

Self test (438)

++nLink>100	Description
TRUE	evaluated 1 time by 1 test Evaluated by: Self test (438)
FALSE	evaluated 101 times by 1 test Evaluated by: Self test (438)

1-101

6313 rc = SQLITE_CANTOPEN_BKPT; -

6314

}

executed 1 time by 1 test: end of block

Executed by:

Self test (438)

6315 -

6316

if( rc==SQLITE_OK ){

rc==0	Description
TRUE	evaluated 109 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 1 time by 1 test Evaluated by: Self test (438)

1-109

6317 nByte = osReadlink(zIn, zDel, nOut-1); -

6318

if( nByte<0 ){

nByte<0	Description
TRUE	never evaluated
FALSE	evaluated 109 times by 1 test Evaluated by: Self test (438)

0-109

6319 rc = unixLogError(SQLITE_CANTOPEN_BKPT, "readlink", zIn); -

6320

}else{

never executed: end of block

6321

if( zDel[0]!='/' ){

zDel[0]!='/'	Description
TRUE	evaluated 108 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 1 time by 1 test Evaluated by: Self test (438)

1-108

6322 int n; -

6323

for(n = sqlite3Strlen30(zIn); n>0 && zIn[n-1]!='/'; n--);

executed 811 times by 1 test: ;

Executed by:

Self test (438)

n>0	Description
TRUE	evaluated 914 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 5 times by 1 test Evaluated by: Self test (438)

zIn[n-1]!='/'	Description
TRUE	evaluated 811 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 103 times by 1 test Evaluated by: Self test (438)

5-914

6324

if( nByte+n+1>nOut ){

nByte+n+1>nOut	Description
TRUE	never evaluated
FALSE	evaluated 108 times by 1 test Evaluated by: Self test (438)

0-108

6325 rc = SQLITE_CANTOPEN_BKPT; -

6326

}else{

never executed: end of block

6327 memmove(&zDel[n], zDel, nByte+1); -

6328 memcpy(zDel, zIn, n); -

6329 nByte += n; -

6330

}

executed 108 times by 1 test: end of block

Executed by:

Self test (438)

108

6331 } -

6332 zDel[nByte] = '\0'; -

6333

}

executed 109 times by 1 test: end of block

Executed by:

Self test (438)

109

6334 } -

6335 -

6336 zIn = zDel; -

6337

}

executed 110 times by 1 test: end of block

Executed by:

Self test (438)

110

6338 -

6339 assert( rc!=SQLITE_OK || zIn!=zOut || zIn[0]=='/' ); -

6340

if( rc==SQLITE_OK && zIn!=zOut ){

rc==0

Description

TRUE

evaluated 33310 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

FALSE

evaluated 4 times by 1 test

Evaluated by:

Self test (438)

zIn!=zOut

Description

TRUE

evaluated 33303 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

FALSE

evaluated 7 times by 1 test

Evaluated by:

Self test (438)

4-33310

6341 rc = mkFullPathname(zIn, zOut, nOut); -

6342

}

executed 33303 times by 438 tests: end of block

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

33303

6343

if( bLink==0 ) break;

executed 33204 times by 438 tests: break;

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

bLink==0

Description

TRUE

evaluated 33204 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

FALSE

evaluated 110 times by 1 test

Evaluated by:

Self test (438)

110-33204

6344 zIn = zOut; -

6345

}while( rc==SQLITE_OK );

executed 110 times by 1 test: end of block

Executed by:

Self test (438)

rc==0	Description
TRUE	evaluated 109 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 1 time by 1 test Evaluated by: Self test (438)

1-110

6346 -

6347 sqlite3_free(zDel); -

6348

return rc;

executed 33205 times by 438 tests: return rc;

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

33205

6349 #endif /* HAVE_READLINK && HAVE_LSTAT */ -

6350 } -

6351 -

6352 -

6353 #ifndef SQLITE_OMIT_LOAD_EXTENSION -

6354 /* -

6355 ** Interfaces for opening a shared library, finding entry points -

6356 ** within the shared library, and closing the shared library. -

6357 */ -

6358 #include <dlfcn.h> -

6359 static void *unixDlOpen(sqlite3_vfs *NotUsed, const char *zFilename){ -

6360 UNUSED_PARAMETER(NotUsed); -

6361

return dlopen(zFilename, RTLD_NOW | RTLD_GLOBAL);

never executed: return dlopen(zFilename, 0x00002 | 0x00100 );

6362 } -

6363 -

6364 /* -

6365 ** SQLite calls this function immediately after a call to unixDlSym() or -

6366 ** unixDlOpen() fails (returns a null pointer). If a more detailed error -

6367 ** message is available, it is written to zBufOut. If no error message -

6368 ** is available, zBufOut is left unmodified and SQLite uses a default -

6369 ** error message. -

6370 */ -

6371 static void unixDlError(sqlite3_vfs *NotUsed, int nBuf, char *zBufOut){ -

6372 const char *zErr; -

6373 UNUSED_PARAMETER(NotUsed); -

6374 unixEnterMutex(); -

6375 zErr = dlerror(); -

6376

if( zErr ){

zErr	Description
TRUE	never evaluated
FALSE	never evaluated

6377 sqlite3_snprintf(nBuf, zBufOut, "%s", zErr); -

6378

}

never executed: end of block

6379 unixLeaveMutex(); -

6380

}

never executed: end of block

6381 static void (*unixDlSym(sqlite3_vfs *NotUsed, void *p, const char*zSym))(void){ -

6382 /* -

6383 ** GCC with -pedantic-errors says that C90 does not allow a void* to be -

6384 ** cast into a pointer to a function. And yet the library dlsym() routine -

6385 ** returns a void* which is really a pointer to a function. So how do we -

6386 ** use dlsym() with -pedantic-errors? -

6387 ** -

6388 ** Variable x below is defined to be a pointer to a function taking -

6389 ** parameters void* and const char* and returning a pointer to a function. -

6390 ** We initialize x by assigning it a pointer to the dlsym() function. -

6391 ** (That assignment requires a cast.) Then we call the function that -

6392 ** x points to. -

6393 ** -

6394 ** This work-around is unlikely to work correctly on any system where -

6395 ** you really cannot cast a function pointer into void*. But then, on the -

6396 ** other hand, dlsym() will not work on such a system either, so we have -

6397 ** not really lost anything. -

6398 */ -

6399 void (*(*x)(void*,const char*))(void); -

6400 UNUSED_PARAMETER(NotUsed); -

6401 x = (void(*(*)(void*,const char*))(void))dlsym; -

6402

return (*x)(p, zSym);

never executed: return (*x)(p, zSym);

6403 } -

6404 static void unixDlClose(sqlite3_vfs *NotUsed, void *pHandle){ -

6405 UNUSED_PARAMETER(NotUsed); -

6406 dlclose(pHandle); -

6407

}

never executed: end of block

6408 #else /* if SQLITE_OMIT_LOAD_EXTENSION is defined: */ -

6409 #define unixDlOpen 0 -

6410 #define unixDlError 0 -

6411 #define unixDlSym 0 -

6412 #define unixDlClose 0 -

6413 #endif -

6414 -

6415 /* -

6416 ** Write nBuf bytes of random data to the supplied buffer zBuf. -

6417 */ -

6418 static int unixRandomness(sqlite3_vfs *NotUsed, int nBuf, char *zBuf){ -

6419 UNUSED_PARAMETER(NotUsed); -

6420 assert((size_t)nBuf>=(sizeof(time_t)+sizeof(int))); -

6421 -

6422 /* We have to initialize zBuf to prevent valgrind from reporting -

6423 ** errors. The reports issued by valgrind are incorrect - we would -

6424 ** prefer that the randomness be increased by making use of the -

6425 ** uninitialized space in zBuf - but valgrind errors tend to worry -

6426 ** some users. Rather than argue, it seems easier just to initialize -

6427 ** the whole array and silence valgrind, even if that means less randomness -

6428 ** in the random seed. -

6429 ** -

6430 ** When testing, initializing zBuf[] to zero is all we do. That means -

6431 ** that we always use the same random number sequence. This makes the -

6432 ** tests repeatable. -

6433 */ -

6434 memset(zBuf, 0, nBuf); -

6435 randomnessPid = osGetpid(0); -

6436 #if !defined(SQLITE_TEST) && !defined(SQLITE_OMIT_RANDOMNESS) -

6437 { -

6438 int fd, got; -

6439 fd = robust_open("/dev/urandom", O_RDONLY, 0); -

6440 if( fd<0 ){ -

6441 time_t t; -

6442 time(&t); -

6443 memcpy(zBuf, &t, sizeof(t)); -

6444 memcpy(&zBuf[sizeof(t)], &randomnessPid, sizeof(randomnessPid)); -

6445 assert( sizeof(t)+sizeof(randomnessPid)<=(size_t)nBuf ); -

6446 nBuf = sizeof(t) + sizeof(randomnessPid); -

6447 }else{ -

6448 do{ got = osRead(fd, zBuf, nBuf); }while( got<0 && errno==EINTR ); -

6449 robust_close(0, fd, __LINE__); -

6450 } -

6451 } -

6452 #endif -

6453

return nBuf;

executed 1074 times by 396 tests: return nBuf;

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
Self test (121)
Self test (122)
...

1074

6454 } -

6455 -

6456 -

6457 /* -

6458 ** Sleep for a little while. Return the amount of time slept. -

6459 ** The argument is the number of microseconds we want to sleep. -

6460 ** The return value is the number of microseconds of sleep actually -

6461 ** requested from the underlying operating system, a number which -

6462 ** might be greater than or equal to the argument, but not less -

6463 ** than the argument. -

6464 */ -

6465 static int unixSleep(sqlite3_vfs *NotUsed, int microseconds){ -

6466 #if OS_VXWORKS -

6467 struct timespec sp; -

6468 -

6469 sp.tv_sec = microseconds / 1000000; -

6470 sp.tv_nsec = (microseconds % 1000000) * 1000; -

6471 nanosleep(&sp, NULL); -

6472 UNUSED_PARAMETER(NotUsed); -

6473 return microseconds; -

6474 #elif defined(HAVE_USLEEP) && HAVE_USLEEP -

6475 usleep(microseconds); -

6476 UNUSED_PARAMETER(NotUsed); -

6477

return microseconds;

executed 34 times by 2 tests: return microseconds;

Executed by:

Self test (31)
Self test (438)

6478 #else -

6479 int seconds = (microseconds+999999)/1000000; -

6480 sleep(seconds); -

6481 UNUSED_PARAMETER(NotUsed); -

6482 return seconds*1000000; -

6483 #endif -

6484 } -

6485 -

6486 /* -

6487 ** The following variable, if set to a non-zero value, is interpreted as -

6488 ** the number of seconds since 1970 and is used to set the result of -

6489 ** sqlite3OsCurrentTime() during testing. -

6490 */ -

6491 #ifdef SQLITE_TEST -

6492 int sqlite3_current_time = 0; /* Fake system time in seconds since 1970. */ -

6493 #endif -

6494 -

6495 /* -

6496 ** Find the current time (in Universal Coordinated Time). Write into *piNow -

6497 ** the current time and date as a Julian Day number times 86_400_000. In -

6498 ** other words, write into *piNow the number of milliseconds since the Julian -

6499 ** epoch of noon in Greenwich on November 24, 4714 B.C according to the -

6500 ** proleptic Gregorian calendar. -

6501 ** -

6502 ** On success, return SQLITE_OK. Return SQLITE_ERROR if the time and date -

6503 ** cannot be found. -

6504 */ -

6505 static int unixCurrentTimeInt64(sqlite3_vfs *NotUsed, sqlite3_int64 *piNow){ -

6506 static const sqlite3_int64 unixEpoch = 24405875*(sqlite3_int64)8640000; -

6507 int rc = SQLITE_OK; -

6508 #if defined(NO_GETTOD) -

6509 time_t t; -

6510 time(&t); -

6511 *piNow = ((sqlite3_int64)t)*1000 + unixEpoch; -

6512 #elif OS_VXWORKS -

6513 struct timespec sNow; -

6514 clock_gettime(CLOCK_REALTIME, &sNow); -

6515 *piNow = unixEpoch + 1000*(sqlite3_int64)sNow.tv_sec + sNow.tv_nsec/1000000; -

6516 #else -

6517 struct timeval sNow; -

6518 (void)gettimeofday(&sNow, 0); /* Cannot fail given valid arguments */ -

6519 *piNow = unixEpoch + 1000*(sqlite3_int64)sNow.tv_sec + sNow.tv_usec/1000; -

6520 #endif -

6521 -

6522 #ifdef SQLITE_TEST -

6523

if( sqlite3_current_time ){

sqlite3_current_time	Description
TRUE	evaluated 41 times by 1 test Evaluated by: Self test (438)
FALSE	evaluated 93 times by 1 test Evaluated by: Self test (438)

41-93

6524 *piNow = 1000*(sqlite3_int64)sqlite3_current_time + unixEpoch; -

6525

}

executed 41 times by 1 test: end of block

Executed by:

Self test (438)

6526 #endif -

6527 UNUSED_PARAMETER(NotUsed); -

6528

return rc;

executed 134 times by 1 test: return rc;

Executed by:

Self test (438)

134

6529 } -

6530 -

6531 #ifndef SQLITE_OMIT_DEPRECATED -

6532 /* -

6533 ** Find the current time (in Universal Coordinated Time). Write the -

6534 ** current time and date as a Julian Day number into *prNow and -

6535 ** return 0. Return 1 if the time and date cannot be found. -

6536 */ -

6537 static int unixCurrentTime(sqlite3_vfs *NotUsed, double *prNow){ -

6538 sqlite3_int64 i = 0; -

6539 int rc; -

6540 UNUSED_PARAMETER(NotUsed); -

6541 rc = unixCurrentTimeInt64(0, &i); -

6542 *prNow = i/86400000.0; -

6543

return rc;

never executed: return rc;

6544 } -

6545 #else -

6546 # define unixCurrentTime 0 -

6547 #endif -

6548 -

6549 /* -

6550 ** The xGetLastError() method is designed to return a better -

6551 ** low-level error message when operating-system problems come up -

6552 ** during SQLite operation. Only the integer return code is currently -

6553 ** used. -

6554 */ -

6555 static int unixGetLastError(sqlite3_vfs *NotUsed, int NotUsed2, char *NotUsed3){ -

6556 UNUSED_PARAMETER(NotUsed); -

6557 UNUSED_PARAMETER(NotUsed2); -

6558 UNUSED_PARAMETER(NotUsed3); -

6559

return errno;

executed 664 times by 1 test: return (*__errno_location ()) ;

Executed by:

Self test (438)

664

6560 } -

6561 -

6562 -

6563 /* -

6564 ************************ End of sqlite3_vfs methods *************************** -

6565 ******************************************************************************/ -

6566 -

6567 /****************************************************************************** -

6568 ************************** Begin Proxy Locking ******************************** -

6569 ** -

6570 ** Proxy locking is a "uber-locking-method" in this sense: It uses the -

6571 ** other locking methods on secondary lock files. Proxy locking is a -

6572 ** meta-layer over top of the primitive locking implemented above. For -

6573 ** this reason, the division that implements of proxy locking is deferred -

6574 ** until late in the file (here) after all of the other I/O methods have -

6575 ** been defined - so that the primitive locking methods are available -

6576 ** as services to help with the implementation of proxy locking. -

6577 ** -

6578 **** -

6579 ** -

6580 ** The default locking schemes in SQLite use byte-range locks on the -

6581 ** database file to coordinate safe, concurrent access by multiple readers -

6582 ** and writers [http://sqlite.org/lockingv3.html]. The five file locking -

6583 ** states (UNLOCKED, PENDING, SHARED, RESERVED, EXCLUSIVE) are implemented -

6584 ** as POSIX read & write locks over fixed set of locations (via fsctl), -

6585 ** on AFP and SMB only exclusive byte-range locks are available via fsctl -

6586 ** with _IOWR('z', 23, struct ByteRangeLockPB2) to track the same 5 states. -

6587 ** To simulate a F_RDLCK on the shared range, on AFP a randomly selected -

6588 ** address in the shared range is taken for a SHARED lock, the entire -

6589 ** shared range is taken for an EXCLUSIVE lock): -

6590 ** -

6591 ** PENDING_BYTE 0x40000000 -

6592 ** RESERVED_BYTE 0x40000001 -

6593 ** SHARED_RANGE 0x40000002 -> 0x40000200 -

6594 ** -

6595 ** This works well on the local file system, but shows a nearly 100x -

6596 ** slowdown in read performance on AFP because the AFP client disables -

6597 ** the read cache when byte-range locks are present. Enabling the read -

6598 ** cache exposes a cache coherency problem that is present on all OS X -

6599 ** supported network file systems. NFS and AFP both observe the -

6600 ** close-to-open semantics for ensuring cache coherency -

6601 ** [http://nfs.sourceforge.net/#faq_a8], which does not effectively -

6602 ** address the requirements for concurrent database access by multiple -

6603 ** readers and writers -

6604 ** [http://www.nabble.com/SQLite-on-NFS-cache-coherency-td15655701.html]. -

6605 ** -

6606 ** To address the performance and cache coherency issues, proxy file locking -

6607 ** changes the way database access is controlled by limiting access to a -

6608 ** single host at a time and moving file locks off of the database file -

6609 ** and onto a proxy file on the local file system. -

6610 ** -

6611 ** -

6612 ** Using proxy locks -

6613 ** ----------------- -

6614 ** -

6615 ** C APIs -

6616 ** -

6617 ** sqlite3_file_control(db, dbname, SQLITE_FCNTL_SET_LOCKPROXYFILE, -

6618 ** <proxy_path> | ":auto:"); -

6619 ** sqlite3_file_control(db, dbname, SQLITE_FCNTL_GET_LOCKPROXYFILE, -

6620 ** &<proxy_path>); -

6621 ** -

6622 ** -

6623 ** SQL pragmas -

6624 ** -

6625 ** PRAGMA [database.]lock_proxy_file=<proxy_path> | :auto: -

6626 ** PRAGMA [database.]lock_proxy_file -

6627 ** -

6628 ** Specifying ":auto:" means that if there is a conch file with a matching -

6629 ** host ID in it, the proxy path in the conch file will be used, otherwise -

6630 ** a proxy path based on the user's temp dir -

6631 ** (via confstr(_CS_DARWIN_USER_TEMP_DIR,...)) will be used and the -

6632 ** actual proxy file name is generated from the name and path of the -

6633 ** database file. For example: -

6634 ** -

6635 ** For database path "/Users/me/foo.db" -

6636 ** The lock path will be "<tmpdir>/sqliteplocks/_Users_me_foo.db:auto:") -

6637 ** -

6638 ** Once a lock proxy is configured for a database connection, it can not -

6639 ** be removed, however it may be switched to a different proxy path via -

6640 ** the above APIs (assuming the conch file is not being held by another -

6641 ** connection or process). -

6642 ** -

6643 ** -

6644 ** How proxy locking works -

6645 ** ----------------------- -

6646 ** -

6647 ** Proxy file locking relies primarily on two new supporting files: -

6648 ** -

6649 ** * conch file to limit access to the database file to a single host -

6650 ** at a time -

6651 ** -

6652 ** * proxy file to act as a proxy for the advisory locks normally -

6653 ** taken on the database -

6654 ** -

6655 ** The conch file - to use a proxy file, sqlite must first "hold the conch" -

6656 ** by taking an sqlite-style shared lock on the conch file, reading the -

6657 ** contents and comparing the host's unique host ID (see below) and lock -

6658 ** proxy path against the values stored in the conch. The conch file is -

6659 ** stored in the same directory as the database file and the file name -

6660 ** is patterned after the database file name as ".<databasename>-conch". -

6661 ** If the conch file does not exist, or its contents do not match the -

6662 ** host ID and/or proxy path, then the lock is escalated to an exclusive -

6663 ** lock and the conch file contents is updated with the host ID and proxy -

6664 ** path and the lock is downgraded to a shared lock again. If the conch -

6665 ** is held by another process (with a shared lock), the exclusive lock -

6666 ** will fail and SQLITE_BUSY is returned. -

6667 ** -

6668 ** The proxy file - a single-byte file used for all advisory file locks -

6669 ** normally taken on the database file. This allows for safe sharing -

6670 ** of the database file for multiple readers and writers on the same -

6671 ** host (the conch ensures that they all use the same local lock file). -

6672 ** -

6673 ** Requesting the lock proxy does not immediately take the conch, it is -

6674 ** only taken when the first request to lock database file is made. -

6675 ** This matches the semantics of the traditional locking behavior, where -

6676 ** opening a connection to a database file does not take a lock on it. -

6677 ** The shared lock and an open file descriptor are maintained until -

6678 ** the connection to the database is closed. -

6679 ** -

6680 ** The proxy file and the lock file are never deleted so they only need -

6681 ** to be created the first time they are used. -

6682 ** -

6683 ** Configuration options -

6684 ** --------------------- -

6685 ** -

6686 ** SQLITE_PREFER_PROXY_LOCKING -

6687 ** -

6688 ** Database files accessed on non-local file systems are -

6689 ** automatically configured for proxy locking, lock files are -

6690 ** named automatically using the same logic as -

6691 ** PRAGMA lock_proxy_file=":auto:" -

6692 ** -

6693 ** SQLITE_PROXY_DEBUG -

6694 ** -

6695 ** Enables the logging of error messages during host id file -

6696 ** retrieval and creation -

6697 ** -

6698 ** LOCKPROXYDIR -

6699 ** -

6700 ** Overrides the default directory used for lock proxy files that -

6701 ** are named automatically via the ":auto:" setting -

6702 ** -

6703 ** SQLITE_DEFAULT_PROXYDIR_PERMISSIONS -

6704 ** -

6705 ** Permissions to use when creating a directory for storing the -

6706 ** lock proxy files, only used when LOCKPROXYDIR is not set. -

6707 ** -

6708 ** -

6709 ** As mentioned above, when compiled with SQLITE_PREFER_PROXY_LOCKING, -

6710 ** setting the environment variable SQLITE_FORCE_PROXY_LOCKING to 1 will -

6711 ** force proxy locking to be used for every database file opened, and 0 -

6712 ** will force automatic proxy locking to be disabled for all database -

6713 ** files (explicitly calling the SQLITE_FCNTL_SET_LOCKPROXYFILE pragma or -

6714 ** sqlite_file_control API is not affected by SQLITE_FORCE_PROXY_LOCKING). -

6715 */ -

6716 -

6717 /* -

6718 ** Proxy locking is only available on MacOSX -

6719 */ -

6720 #if defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE -

6721 -

6722 /* -

6723 ** The proxyLockingContext has the path and file structures for the remote -

6724 ** and local proxy files in it -

6725 */ -

6726 typedef struct proxyLockingContext proxyLockingContext; -

6727 struct proxyLockingContext { -

6728 unixFile *conchFile; /* Open conch file */ -

6729 char *conchFilePath; /* Name of the conch file */ -

6730 unixFile *lockProxy; /* Open proxy lock file */ -

6731 char *lockProxyPath; /* Name of the proxy lock file */ -

6732 char *dbPath; /* Name of the open file */ -

6733 int conchHeld; /* 1 if the conch is held, -1 if lockless */ -

6734 int nFails; /* Number of conch taking failures */ -

6735 void *oldLockingContext; /* Original lockingcontext to restore on close */ -

6736 sqlite3_io_methods const *pOldMethod; /* Original I/O methods for close */ -

6737 }; -

6738 -

6739 /* -

6740 ** The proxy lock file path for the database at dbPath is written into lPath, -

6741 ** which must point to valid, writable memory large enough for a maxLen length -

6742 ** file path. -

6743 */ -

6744 static int proxyGetLockPath(const char *dbPath, char *lPath, size_t maxLen){ -

6745 int len; -

6746 int dbLen; -

6747 int i; -

6748 -

6749 #ifdef LOCKPROXYDIR -

6750 len = strlcpy(lPath, LOCKPROXYDIR, maxLen); -

6751 #else -

6752 # ifdef _CS_DARWIN_USER_TEMP_DIR -

6753 { -

6754 if( !confstr(_CS_DARWIN_USER_TEMP_DIR, lPath, maxLen) ){ -

6755 OSTRACE(("GETLOCKPATH failed %s errno=%d pid=%d\n", -

6756 lPath, errno, osGetpid(0))); -

6757 return SQLITE_IOERR_LOCK; -

6758 } -

6759 len = strlcat(lPath, "sqliteplocks", maxLen); -

6760 } -

6761 # else -

6762 len = strlcpy(lPath, "/tmp/", maxLen); -

6763 # endif -

6764 #endif -

6765 -

6766 if( lPath[len-1]!='/' ){ -

6767 len = strlcat(lPath, "/", maxLen); -

6768 } -

6769 -

6770 /* transform the db path to a unique cache name */ -

6771 dbLen = (int)strlen(dbPath); -

6772 for( i=0; i<dbLen && (i+len+7)<(int)maxLen; i++){ -

6773 char c = dbPath[i]; -

6774 lPath[i+len] = (c=='/')?'_':c; -

6775 } -

6776 lPath[i+len]='\0'; -

6777 strlcat(lPath, ":auto:", maxLen); -

6778 OSTRACE(("GETLOCKPATH proxy lock path=%s pid=%d\n", lPath, osGetpid(0))); -

6779 return SQLITE_OK; -

6780 } -

6781 -

6782 /* -

6783 ** Creates the lock file and any missing directories in lockPath -

6784 */ -

6785 static int proxyCreateLockPath(const char *lockPath){ -

6786 int i, len; -

6787 char buf[MAXPATHLEN]; -

6788 int start = 0; -

6789 -

6790 assert(lockPath!=NULL); -

6791 /* try to create all the intermediate directories */ -

6792 len = (int)strlen(lockPath); -

6793 buf[0] = lockPath[0]; -

6794 for( i=1; i<len; i++ ){ -

6795 if( lockPath[i] == '/' && (i - start > 0) ){ -

6796 /* only mkdir if leaf dir != "." or "/" or ".." */ -

6797 if( i-start>2 || (i-start==1 && buf[start] != '.' && buf[start] != '/') -

6798 || (i-start==2 && buf[start] != '.' && buf[start+1] != '.') ){ -

6799 buf[i]='\0'; -

6800 if( osMkdir(buf, SQLITE_DEFAULT_PROXYDIR_PERMISSIONS) ){ -

6801 int err=errno; -

6802 if( err!=EEXIST ) { -

6803 OSTRACE(("CREATELOCKPATH FAILED creating %s, " -

6804 "'%s' proxy lock path=%s pid=%d\n", -

6805 buf, strerror(err), lockPath, osGetpid(0))); -

6806 return err; -

6807 } -

6808 } -

6809 } -

6810 start=i+1; -

6811 } -

6812 buf[i] = lockPath[i]; -

6813 } -

6814 OSTRACE(("CREATELOCKPATH proxy lock path=%s pid=%d\n",lockPath,osGetpid(0))); -

6815 return 0; -

6816 } -

6817 -

6818 /* -

6819 ** Create a new VFS file descriptor (stored in memory obtained from -

6820 ** sqlite3_malloc) and open the file named "path" in the file descriptor. -

6821 ** -

6822 ** The caller is responsible not only for closing the file descriptor -

6823 ** but also for freeing the memory associated with the file descriptor. -

6824 */ -

6825 static int proxyCreateUnixFile( -

6826 const char *path, /* path for the new unixFile */ -

6827 unixFile **ppFile, /* unixFile created and returned by ref */ -

6828 int islockfile /* if non zero missing dirs will be created */ -

6829 ) { -

6830 int fd = -1; -

6831 unixFile *pNew; -

6832 int rc = SQLITE_OK; -

6833 int openFlags = O_RDWR | O_CREAT; -

6834 sqlite3_vfs dummyVfs; -

6835 int terrno = 0; -

6836 UnixUnusedFd *pUnused = NULL; -

6837 -

6838 /* 1. first try to open/create the file -

6839 ** 2. if that fails, and this is a lock file (not-conch), try creating -

6840 ** the parent directories and then try again. -

6841 ** 3. if that fails, try to open the file read-only -

6842 ** otherwise return BUSY (if lock file) or CANTOPEN for the conch file -

6843 */ -

6844 pUnused = findReusableFd(path, openFlags); -

6845 if( pUnused ){ -

6846 fd = pUnused->fd; -

6847 }else{ -

6848 pUnused = sqlite3_malloc64(sizeof(*pUnused)); -

6849 if( !pUnused ){ -

6850 return SQLITE_NOMEM_BKPT; -

6851 } -

6852 } -

6853 if( fd<0 ){ -

6854 fd = robust_open(path, openFlags, 0); -

6855 terrno = errno; -

6856 if( fd<0 && errno==ENOENT && islockfile ){ -

6857 if( proxyCreateLockPath(path) == SQLITE_OK ){ -

6858 fd = robust_open(path, openFlags, 0); -

6859 } -

6860 } -

6861 } -

6862 if( fd<0 ){ -

6863 openFlags = O_RDONLY; -

6864 fd = robust_open(path, openFlags, 0); -

6865 terrno = errno; -

6866 } -

6867 if( fd<0 ){ -

6868 if( islockfile ){ -

6869 return SQLITE_BUSY; -

6870 } -

6871 switch (terrno) { -

6872 case EACCES: -

6873 return SQLITE_PERM; -

6874 case EIO: -

6875 return SQLITE_IOERR_LOCK; /* even though it is the conch */ -

6876 default: -

6877 return SQLITE_CANTOPEN_BKPT; -

6878 } -

6879 } -

6880 -

6881 pNew = (unixFile *)sqlite3_malloc64(sizeof(*pNew)); -

6882 if( pNew==NULL ){ -

6883 rc = SQLITE_NOMEM_BKPT; -

6884 goto end_create_proxy; -

6885 } -

6886 memset(pNew, 0, sizeof(unixFile)); -

6887 pNew->openFlags = openFlags; -

6888 memset(&dummyVfs, 0, sizeof(dummyVfs)); -

6889 dummyVfs.pAppData = (void*)&autolockIoFinder; -

6890 dummyVfs.zName = "dummy"; -

6891 pUnused->fd = fd; -

6892 pUnused->flags = openFlags; -

6893 pNew->pPreallocatedUnused = pUnused; -

6894 -

6895 rc = fillInUnixFile(&dummyVfs, fd, (sqlite3_file*)pNew, path, 0); -

6896 if( rc==SQLITE_OK ){ -

6897 *ppFile = pNew; -

6898 return SQLITE_OK; -

6899 } -

6900 end_create_proxy: -

6901 robust_close(pNew, fd, __LINE__); -

6902 sqlite3_free(pNew); -

6903 sqlite3_free(pUnused); -

6904 return rc; -

6905 } -

6906 -

6907 #ifdef SQLITE_TEST -

6908 /* simulate multiple hosts by creating unique hostid file paths */ -

6909 int sqlite3_hostid_num = 0; -

6910 #endif -

6911 -

6912 #define PROXY_HOSTIDLEN 16 /* conch file host id length */ -

6913 -

6914 #ifdef HAVE_GETHOSTUUID -

6915 /* Not always defined in the headers as it ought to be */ -

6916 extern int gethostuuid(uuid_t id, const struct timespec *wait); -

6917 #endif -

6918 -

6919 /* get the host ID via gethostuuid(), pHostID must point to PROXY_HOSTIDLEN -

6920 ** bytes of writable memory. -

6921 */ -

6922 static int proxyGetHostID(unsigned char *pHostID, int *pError){ -

6923 assert(PROXY_HOSTIDLEN == sizeof(uuid_t)); -

6924 memset(pHostID, 0, PROXY_HOSTIDLEN); -

6925 #ifdef HAVE_GETHOSTUUID -

6926 { -

6927 struct timespec timeout = {1, 0}; /* 1 sec timeout */ -

6928 if( gethostuuid(pHostID, &timeout) ){ -

6929 int err = errno; -

6930 if( pError ){ -

6931 *pError = err; -

6932 } -

6933 return SQLITE_IOERR; -

6934 } -

6935 } -

6936 #else -

6937 UNUSED_PARAMETER(pError); -

6938 #endif -

6939 #ifdef SQLITE_TEST -

6940 /* simulate multiple hosts by creating unique hostid file paths */ -

6941 if( sqlite3_hostid_num != 0){ -

6942 pHostID[0] = (char)(pHostID[0] + (char)(sqlite3_hostid_num & 0xFF)); -

6943 } -

6944 #endif -

6945 -

6946 return SQLITE_OK; -

6947 } -

6948 -

6949 /* The conch file contains the header, host id and lock file path -

6950 */ -

6951 #define PROXY_CONCHVERSION 2 /* 1-byte header, 16-byte host id, path */ -

6952 #define PROXY_HEADERLEN 1 /* conch file header length */ -

6953 #define PROXY_PATHINDEX (PROXY_HEADERLEN+PROXY_HOSTIDLEN) -

6954 #define PROXY_MAXCONCHLEN (PROXY_HEADERLEN+PROXY_HOSTIDLEN+MAXPATHLEN) -

6955 -

6956 /* -

6957 ** Takes an open conch file, copies the contents to a new path and then moves -

6958 ** it back. The newly created file's file descriptor is assigned to the -

6959 ** conch file structure and finally the original conch file descriptor is -

6960 ** closed. Returns zero if successful. -

6961 */ -

6962 static int proxyBreakConchLock(unixFile *pFile, uuid_t myHostID){ -

6963 proxyLockingContext *pCtx = (proxyLockingContext *)pFile->lockingContext; -

6964 unixFile *conchFile = pCtx->conchFile; -

6965 char tPath[MAXPATHLEN]; -

6966 char buf[PROXY_MAXCONCHLEN]; -

6967 char *cPath = pCtx->conchFilePath; -

6968 size_t readLen = 0; -

6969 size_t pathLen = 0; -

6970 char errmsg[64] = ""; -

6971 int fd = -1; -

6972 int rc = -1; -

6973 UNUSED_PARAMETER(myHostID); -

6974 -

6975 /* create a new path by replace the trailing '-conch' with '-break' */ -

6976 pathLen = strlcpy(tPath, cPath, MAXPATHLEN); -

6977 if( pathLen>MAXPATHLEN || pathLen<6 || -

6978 (strlcpy(&tPath[pathLen-5], "break", 6) != 5) ){ -

6979 sqlite3_snprintf(sizeof(errmsg),errmsg,"path error (len %d)",(int)pathLen); -

6980 goto end_breaklock; -

6981 } -

6982 /* read the conch content */ -

6983 readLen = osPread(conchFile->h, buf, PROXY_MAXCONCHLEN, 0); -

6984 if( readLen<PROXY_PATHINDEX ){ -

6985 sqlite3_snprintf(sizeof(errmsg),errmsg,"read error (len %d)",(int)readLen); -

6986 goto end_breaklock; -

6987 } -

6988 /* write it out to the temporary break file */ -

6989 fd = robust_open(tPath, (O_RDWR|O_CREAT|O_EXCL), 0); -

6990 if( fd<0 ){ -

6991 sqlite3_snprintf(sizeof(errmsg), errmsg, "create failed (%d)", errno); -

6992 goto end_breaklock; -

6993 } -

6994 if( osPwrite(fd, buf, readLen, 0) != (ssize_t)readLen ){ -

6995 sqlite3_snprintf(sizeof(errmsg), errmsg, "write failed (%d)", errno); -

6996 goto end_breaklock; -

6997 } -

6998 if( rename(tPath, cPath) ){ -

6999 sqlite3_snprintf(sizeof(errmsg), errmsg, "rename failed (%d)", errno); -

7000 goto end_breaklock; -

7001 } -

7002 rc = 0; -

7003 fprintf(stderr, "broke stale lock on %s\n", cPath); -

7004 robust_close(pFile, conchFile->h, __LINE__); -

7005 conchFile->h = fd; -

7006 conchFile->openFlags = O_RDWR | O_CREAT; -

7007 -

7008 end_breaklock: -

7009 if( rc ){ -

7010 if( fd>=0 ){ -

7011 osUnlink(tPath); -

7012 robust_close(pFile, fd, __LINE__); -

7013 } -

7014 fprintf(stderr, "failed to break stale lock on %s, %s\n", cPath, errmsg); -

7015 } -

7016 return rc; -

7017 } -

7018 -

7019 /* Take the requested lock on the conch file and break a stale lock if the -

7020 ** host id matches. -

7021 */ -

7022 static int proxyConchLock(unixFile *pFile, uuid_t myHostID, int lockType){ -

7023 proxyLockingContext *pCtx = (proxyLockingContext *)pFile->lockingContext; -

7024 unixFile *conchFile = pCtx->conchFile; -

7025 int rc = SQLITE_OK; -

7026 int nTries = 0; -

7027 struct timespec conchModTime; -

7028 -

7029 memset(&conchModTime, 0, sizeof(conchModTime)); -

7030 do { -

7031 rc = conchFile->pMethod->xLock((sqlite3_file*)conchFile, lockType); -

7032 nTries ++; -

7033 if( rc==SQLITE_BUSY ){ -

7034 /* If the lock failed (busy): -

7035 * 1st try: get the mod time of the conch, wait 0.5s and try again. -

7036 * 2nd try: fail if the mod time changed or host id is different, wait -

7037 * 10 sec and try again -

7038 * 3rd try: break the lock unless the mod time has changed. -

7039 */ -

7040 struct stat buf; -

7041 if( osFstat(conchFile->h, &buf) ){ -

7042 storeLastErrno(pFile, errno); -

7043 return SQLITE_IOERR_LOCK; -

7044 } -

7045 -

7046 if( nTries==1 ){ -

7047 conchModTime = buf.st_mtimespec; -

7048 usleep(500000); /* wait 0.5 sec and try the lock again*/ -

7049 continue; -

7050 } -

7051 -

7052 assert( nTries>1 ); -

7053 if( conchModTime.tv_sec != buf.st_mtimespec.tv_sec || -

7054 conchModTime.tv_nsec != buf.st_mtimespec.tv_nsec ){ -

7055 return SQLITE_BUSY; -

7056 } -

7057 -

7058 if( nTries==2 ){ -

7059 char tBuf[PROXY_MAXCONCHLEN]; -

7060 int len = osPread(conchFile->h, tBuf, PROXY_MAXCONCHLEN, 0); -

7061 if( len<0 ){ -

7062 storeLastErrno(pFile, errno); -

7063 return SQLITE_IOERR_LOCK; -

7064 } -

7065 if( len>PROXY_PATHINDEX && tBuf[0]==(char)PROXY_CONCHVERSION){ -

7066 /* don't break the lock if the host id doesn't match */ -

7067 if( 0!=memcmp(&tBuf[PROXY_HEADERLEN], myHostID, PROXY_HOSTIDLEN) ){ -

7068 return SQLITE_BUSY; -

7069 } -

7070 }else{ -

7071 /* don't break the lock on short read or a version mismatch */ -

7072 return SQLITE_BUSY; -

7073 } -

7074 usleep(10000000); /* wait 10 sec and try the lock again */ -

7075 continue; -

7076 } -

7077 -

7078 assert( nTries==3 ); -

7079 if( 0==proxyBreakConchLock(pFile, myHostID) ){ -

7080 rc = SQLITE_OK; -

7081 if( lockType==EXCLUSIVE_LOCK ){ -

7082 rc = conchFile->pMethod->xLock((sqlite3_file*)conchFile, SHARED_LOCK); -

7083 } -

7084 if( !rc ){ -

7085 rc = conchFile->pMethod->xLock((sqlite3_file*)conchFile, lockType); -

7086 } -

7087 } -

7088 } -

7089 } while( rc==SQLITE_BUSY && nTries<3 ); -

7090 -

7091 return rc; -

7092 } -

7093 -

7094 /* Takes the conch by taking a shared lock and read the contents conch, if -

7095 ** lockPath is non-NULL, the host ID and lock file path must match. A NULL -

7096 ** lockPath means that the lockPath in the conch file will be used if the -

7097 ** host IDs match, or a new lock path will be generated automatically -

7098 ** and written to the conch file. -

7099 */ -

7100 static int proxyTakeConch(unixFile *pFile){ -

7101 proxyLockingContext *pCtx = (proxyLockingContext *)pFile->lockingContext; -

7102 -

7103 if( pCtx->conchHeld!=0 ){ -

7104 return SQLITE_OK; -

7105 }else{ -

7106 unixFile *conchFile = pCtx->conchFile; -

7107 uuid_t myHostID; -

7108 int pError = 0; -

7109 char readBuf[PROXY_MAXCONCHLEN]; -

7110 char lockPath[MAXPATHLEN]; -

7111 char *tempLockPath = NULL; -

7112 int rc = SQLITE_OK; -

7113 int createConch = 0; -

7114 int hostIdMatch = 0; -

7115 int readLen = 0; -

7116 int tryOldLockPath = 0; -

7117 int forceNewLockPath = 0; -

7118 -

7119 OSTRACE(("TAKECONCH %d for %s pid=%d\n", conchFile->h, -

7120 (pCtx->lockProxyPath ? pCtx->lockProxyPath : ":auto:"), -

7121 osGetpid(0))); -

7122 -

7123 rc = proxyGetHostID(myHostID, &pError); -

7124 if( (rc&0xff)==SQLITE_IOERR ){ -

7125 storeLastErrno(pFile, pError); -

7126 goto end_takeconch; -

7127 } -

7128 rc = proxyConchLock(pFile, myHostID, SHARED_LOCK); -

7129 if( rc!=SQLITE_OK ){ -

7130 goto end_takeconch; -

7131 } -

7132 /* read the existing conch file */ -

7133 readLen = seekAndRead((unixFile*)conchFile, 0, readBuf, PROXY_MAXCONCHLEN); -

7134 if( readLen<0 ){ -

7135 /* I/O error: lastErrno set by seekAndRead */ -

7136 storeLastErrno(pFile, conchFile->lastErrno); -

7137 rc = SQLITE_IOERR_READ; -

7138 goto end_takeconch; -

7139 }else if( readLen<=(PROXY_HEADERLEN+PROXY_HOSTIDLEN) || -

7140 readBuf[0]!=(char)PROXY_CONCHVERSION ){ -

7141 /* a short read or version format mismatch means we need to create a new -

7142 ** conch file. -

7143 */ -

7144 createConch = 1; -

7145 } -

7146 /* if the host id matches and the lock path already exists in the conch -

7147 ** we'll try to use the path there, if we can't open that path, we'll -

7148 ** retry with a new auto-generated path -

7149 */ -

7150 do { /* in case we need to try again for an :auto: named lock file */ -

7151 -

7152 if( !createConch && !forceNewLockPath ){ -

7153 hostIdMatch = !memcmp(&readBuf[PROXY_HEADERLEN], myHostID, -

7154 PROXY_HOSTIDLEN); -

7155 /* if the conch has data compare the contents */ -

7156 if( !pCtx->lockProxyPath ){ -

7157 /* for auto-named local lock file, just check the host ID and we'll -

7158 ** use the local lock file path that's already in there -

7159 */ -

7160 if( hostIdMatch ){ -

7161 size_t pathLen = (readLen - PROXY_PATHINDEX); -

7162 -

7163 if( pathLen>=MAXPATHLEN ){ -

7164 pathLen=MAXPATHLEN-1; -

7165 } -

7166 memcpy(lockPath, &readBuf[PROXY_PATHINDEX], pathLen); -

7167 lockPath[pathLen] = 0; -

7168 tempLockPath = lockPath; -

7169 tryOldLockPath = 1; -

7170 /* create a copy of the lock path if the conch is taken */ -

7171 goto end_takeconch; -

7172 } -

7173 }else if( hostIdMatch -

7174 && !strncmp(pCtx->lockProxyPath, &readBuf[PROXY_PATHINDEX], -

7175 readLen-PROXY_PATHINDEX) -

7176 ){ -

7177 /* conch host and lock path match */ -

7178 goto end_takeconch; -

7179 } -

7180 } -

7181 -

7182 /* if the conch isn't writable and doesn't match, we can't take it */ -

7183 if( (conchFile->openFlags&O_RDWR) == 0 ){ -

7184 rc = SQLITE_BUSY; -

7185 goto end_takeconch; -

7186 } -

7187 -

7188 /* either the conch didn't match or we need to create a new one */ -

7189 if( !pCtx->lockProxyPath ){ -

7190 proxyGetLockPath(pCtx->dbPath, lockPath, MAXPATHLEN); -

7191 tempLockPath = lockPath; -

7192 /* create a copy of the lock path _only_ if the conch is taken */ -

7193 } -

7194 -

7195 /* update conch with host and path (this will fail if other process -

7196 ** has a shared lock already), if the host id matches, use the big -

7197 ** stick. -

7198 */ -

7199 futimes(conchFile->h, NULL); -

7200 if( hostIdMatch && !createConch ){ -

7201 if( conchFile->pInode && conchFile->pInode->nShared>1 ){ -

7202 /* We are trying for an exclusive lock but another thread in this -

7203 ** same process is still holding a shared lock. */ -

7204 rc = SQLITE_BUSY; -

7205 } else { -

7206 rc = proxyConchLock(pFile, myHostID, EXCLUSIVE_LOCK); -

7207 } -

7208 }else{ -

7209 rc = proxyConchLock(pFile, myHostID, EXCLUSIVE_LOCK); -

7210 } -

7211 if( rc==SQLITE_OK ){ -

7212 char writeBuffer[PROXY_MAXCONCHLEN]; -

7213 int writeSize = 0; -

7214 -

7215 writeBuffer[0] = (char)PROXY_CONCHVERSION; -

7216 memcpy(&writeBuffer[PROXY_HEADERLEN], myHostID, PROXY_HOSTIDLEN); -

7217 if( pCtx->lockProxyPath!=NULL ){ -

7218 strlcpy(&writeBuffer[PROXY_PATHINDEX], pCtx->lockProxyPath, -

7219 MAXPATHLEN); -

7220 }else{ -

7221 strlcpy(&writeBuffer[PROXY_PATHINDEX], tempLockPath, MAXPATHLEN); -

7222 } -

7223 writeSize = PROXY_PATHINDEX + strlen(&writeBuffer[PROXY_PATHINDEX]); -

7224 robust_ftruncate(conchFile->h, writeSize); -

7225 rc = unixWrite((sqlite3_file *)conchFile, writeBuffer, writeSize, 0); -

7226 full_fsync(conchFile->h,0,0); -

7227 /* If we created a new conch file (not just updated the contents of a -

7228 ** valid conch file), try to match the permissions of the database -

7229 */ -

7230 if( rc==SQLITE_OK && createConch ){ -

7231 struct stat buf; -

7232 int err = osFstat(pFile->h, &buf); -

7233 if( err==0 ){ -

7234 mode_t cmode = buf.st_mode&(S_IRUSR|S_IWUSR | S_IRGRP|S_IWGRP | -

7235 S_IROTH|S_IWOTH); -

7236 /* try to match the database file R/W permissions, ignore failure */ -

7237 #ifndef SQLITE_PROXY_DEBUG -

7238 osFchmod(conchFile->h, cmode); -

7239 #else -

7240 do{ -

7241 rc = osFchmod(conchFile->h, cmode); -

7242 }while( rc==(-1) && errno==EINTR ); -

7243 if( rc!=0 ){ -

7244 int code = errno; -

7245 fprintf(stderr, "fchmod %o FAILED with %d %s\n", -

7246 cmode, code, strerror(code)); -

7247 } else { -

7248 fprintf(stderr, "fchmod %o SUCCEDED\n",cmode); -

7249 } -

7250 }else{ -

7251 int code = errno; -

7252 fprintf(stderr, "STAT FAILED[%d] with %d %s\n", -

7253 err, code, strerror(code)); -

7254 #endif -

7255 } -

7256 } -

7257 } -

7258 conchFile->pMethod->xUnlock((sqlite3_file*)conchFile, SHARED_LOCK); -

7259 -

7260 end_takeconch: -

7261 OSTRACE(("TRANSPROXY: CLOSE %d\n", pFile->h)); -

7262 if( rc==SQLITE_OK && pFile->openFlags ){ -

7263 int fd; -

7264 if( pFile->h>=0 ){ -

7265 robust_close(pFile, pFile->h, __LINE__); -

7266 } -

7267 pFile->h = -1; -

7268 fd = robust_open(pCtx->dbPath, pFile->openFlags, 0); -

7269 OSTRACE(("TRANSPROXY: OPEN %d\n", fd)); -

7270 if( fd>=0 ){ -

7271 pFile->h = fd; -

7272 }else{ -

7273 rc=SQLITE_CANTOPEN_BKPT; /* SQLITE_BUSY? proxyTakeConch called -

7274 during locking */ -

7275 } -

7276 } -

7277 if( rc==SQLITE_OK && !pCtx->lockProxy ){ -

7278 char *path = tempLockPath ? tempLockPath : pCtx->lockProxyPath; -

7279 rc = proxyCreateUnixFile(path, &pCtx->lockProxy, 1); -

7280 if( rc!=SQLITE_OK && rc!=SQLITE_NOMEM && tryOldLockPath ){ -

7281 /* we couldn't create the proxy lock file with the old lock file path -

7282 ** so try again via auto-naming -

7283 */ -

7284 forceNewLockPath = 1; -

7285 tryOldLockPath = 0; -

7286 continue; /* go back to the do {} while start point, try again */ -

7287 } -

7288 } -

7289 if( rc==SQLITE_OK ){ -

7290 /* Need to make a copy of path if we extracted the value -

7291 ** from the conch file or the path was allocated on the stack -

7292 */ -

7293 if( tempLockPath ){ -

7294 pCtx->lockProxyPath = sqlite3DbStrDup(0, tempLockPath); -

7295 if( !pCtx->lockProxyPath ){ -

7296 rc = SQLITE_NOMEM_BKPT; -

7297 } -

7298 } -

7299 } -

7300 if( rc==SQLITE_OK ){ -

7301 pCtx->conchHeld = 1; -

7302 -

7303 if( pCtx->lockProxy->pMethod == &afpIoMethods ){ -

7304 afpLockingContext *afpCtx; -

7305 afpCtx = (afpLockingContext *)pCtx->lockProxy->lockingContext; -

7306 afpCtx->dbPath = pCtx->lockProxyPath; -

7307 } -

7308 } else { -

7309 conchFile->pMethod->xUnlock((sqlite3_file*)conchFile, NO_LOCK); -

7310 } -

7311 OSTRACE(("TAKECONCH %d %s\n", conchFile->h, -

7312 rc==SQLITE_OK?"ok":"failed")); -

7313 return rc; -

7314 } while (1); /* in case we need to retry the :auto: lock file - -

7315 ** we should never get here except via the 'continue' call. */ -

7316 } -

7317 } -

7318 -

7319 /* -

7320 ** If pFile holds a lock on a conch file, then release that lock. -

7321 */ -

7322 static int proxyReleaseConch(unixFile *pFile){ -

7323 int rc = SQLITE_OK; /* Subroutine return code */ -

7324 proxyLockingContext *pCtx; /* The locking context for the proxy lock */ -

7325 unixFile *conchFile; /* Name of the conch file */ -

7326 -

7327 pCtx = (proxyLockingContext *)pFile->lockingContext; -

7328 conchFile = pCtx->conchFile; -

7329 OSTRACE(("RELEASECONCH %d for %s pid=%d\n", conchFile->h, -

7330 (pCtx->lockProxyPath ? pCtx->lockProxyPath : ":auto:"), -

7331 osGetpid(0))); -

7332 if( pCtx->conchHeld>0 ){ -

7333 rc = conchFile->pMethod->xUnlock((sqlite3_file*)conchFile, NO_LOCK); -

7334 } -

7335 pCtx->conchHeld = 0; -

7336 OSTRACE(("RELEASECONCH %d %s\n", conchFile->h, -

7337 (rc==SQLITE_OK ? "ok" : "failed"))); -

7338 return rc; -

7339 } -

7340 -

7341 /* -

7342 ** Given the name of a database file, compute the name of its conch file. -

7343 ** Store the conch filename in memory obtained from sqlite3_malloc64(). -

7344 ** Make *pConchPath point to the new name. Return SQLITE_OK on success -

7345 ** or SQLITE_NOMEM if unable to obtain memory. -

7346 ** -

7347 ** The caller is responsible for ensuring that the allocated memory -

7348 ** space is eventually freed. -

7349 ** -

7350 ** *pConchPath is set to NULL if a memory allocation error occurs. -

7351 */ -

7352 static int proxyCreateConchPathname(char *dbPath, char **pConchPath){ -

7353 int i; /* Loop counter */ -

7354 int len = (int)strlen(dbPath); /* Length of database filename - dbPath */ -

7355 char *conchPath; /* buffer in which to construct conch name */ -

7356 -

7357 /* Allocate space for the conch filename and initialize the name to -

7358 ** the name of the original database file. */ -

7359 *pConchPath = conchPath = (char *)sqlite3_malloc64(len + 8); -

7360 if( conchPath==0 ){ -

7361 return SQLITE_NOMEM_BKPT; -

7362 } -

7363 memcpy(conchPath, dbPath, len+1); -

7364 -

7365 /* now insert a "." before the last / character */ -

7366 for( i=(len-1); i>=0; i-- ){ -

7367 if( conchPath[i]=='/' ){ -

7368 i++; -

7369 break; -

7370 } -

7371 } -

7372 conchPath[i]='.'; -

7373 while ( i<len ){ -

7374 conchPath[i+1]=dbPath[i]; -

7375 i++; -

7376 } -

7377 -

7378 /* append the "-conch" suffix to the file */ -

7379 memcpy(&conchPath[i+1], "-conch", 7); -

7380 assert( (int)strlen(conchPath) == len+7 ); -

7381 -

7382 return SQLITE_OK; -

7383 } -

7384 -

7385 -

7386 /* Takes a fully configured proxy locking-style unix file and switches -

7387 ** the local lock file path -

7388 */ -

7389 static int switchLockProxyPath(unixFile *pFile, const char *path) { -

7390 proxyLockingContext *pCtx = (proxyLockingContext*)pFile->lockingContext; -

7391 char *oldPath = pCtx->lockProxyPath; -

7392 int rc = SQLITE_OK; -

7393 -

7394 if( pFile->eFileLock!=NO_LOCK ){ -

7395 return SQLITE_BUSY; -

7396 } -

7397 -

7398 /* nothing to do if the path is NULL, :auto: or matches the existing path */ -

7399 if( !path || path[0]=='\0' || !strcmp(path, ":auto:") || -

7400 (oldPath && !strncmp(oldPath, path, MAXPATHLEN)) ){ -

7401 return SQLITE_OK; -

7402 }else{ -

7403 unixFile *lockProxy = pCtx->lockProxy; -

7404 pCtx->lockProxy=NULL; -

7405 pCtx->conchHeld = 0; -

7406 if( lockProxy!=NULL ){ -

7407 rc=lockProxy->pMethod->xClose((sqlite3_file *)lockProxy); -

7408 if( rc ) return rc; -

7409 sqlite3_free(lockProxy); -

7410 } -

7411 sqlite3_free(oldPath); -

7412 pCtx->lockProxyPath = sqlite3DbStrDup(0, path); -

7413 } -

7414 -

7415 return rc; -

7416 } -

7417 -

7418 /* -

7419 ** pFile is a file that has been opened by a prior xOpen call. dbPath -

7420 ** is a string buffer at least MAXPATHLEN+1 characters in size. -

7421 ** -

7422 ** This routine find the filename associated with pFile and writes it -

7423 ** int dbPath. -

7424 */ -

7425 static int proxyGetDbPathForUnixFile(unixFile *pFile, char *dbPath){ -

7426 #if defined(__APPLE__) -

7427 if( pFile->pMethod == &afpIoMethods ){ -

7428 /* afp style keeps a reference to the db path in the filePath field -

7429 ** of the struct */ -

7430 assert( (int)strlen((char*)pFile->lockingContext)<=MAXPATHLEN ); -

7431 strlcpy(dbPath, ((afpLockingContext *)pFile->lockingContext)->dbPath, -

7432 MAXPATHLEN); -

7433 } else -

7434 #endif -

7435 if( pFile->pMethod == &dotlockIoMethods ){ -

7436 /* dot lock style uses the locking context to store the dot lock -

7437 ** file path */ -

7438 int len = strlen((char *)pFile->lockingContext) - strlen(DOTLOCK_SUFFIX); -

7439 memcpy(dbPath, (char *)pFile->lockingContext, len + 1); -

7440 }else{ -

7441 /* all other styles use the locking context to store the db file path */ -

7442 assert( strlen((char*)pFile->lockingContext)<=MAXPATHLEN ); -

7443 strlcpy(dbPath, (char *)pFile->lockingContext, MAXPATHLEN); -

7444 } -

7445 return SQLITE_OK; -

7446 } -

7447 -

7448 /* -

7449 ** Takes an already filled in unix file and alters it so all file locking -

7450 ** will be performed on the local proxy lock file. The following fields -

7451 ** are preserved in the locking context so that they can be restored and -

7452 ** the unix structure properly cleaned up at close time: -

7453 ** ->lockingContext -

7454 ** ->pMethod -

7455 */ -

7456 static int proxyTransformUnixFile(unixFile *pFile, const char *path) { -

7457 proxyLockingContext *pCtx; -

7458 char dbPath[MAXPATHLEN+1]; /* Name of the database file */ -

7459 char *lockPath=NULL; -

7460 int rc = SQLITE_OK; -

7461 -

7462 if( pFile->eFileLock!=NO_LOCK ){ -

7463 return SQLITE_BUSY; -

7464 } -

7465 proxyGetDbPathForUnixFile(pFile, dbPath); -

7466 if( !path || path[0]=='\0' || !strcmp(path, ":auto:") ){ -

7467 lockPath=NULL; -

7468 }else{ -

7469 lockPath=(char *)path; -

7470 } -

7471 -

7472 OSTRACE(("TRANSPROXY %d for %s pid=%d\n", pFile->h, -

7473 (lockPath ? lockPath : ":auto:"), osGetpid(0))); -

7474 -

7475 pCtx = sqlite3_malloc64( sizeof(*pCtx) ); -

7476 if( pCtx==0 ){ -

7477 return SQLITE_NOMEM_BKPT; -

7478 } -

7479 memset(pCtx, 0, sizeof(*pCtx)); -

7480 -

7481 rc = proxyCreateConchPathname(dbPath, &pCtx->conchFilePath); -

7482 if( rc==SQLITE_OK ){ -

7483 rc = proxyCreateUnixFile(pCtx->conchFilePath, &pCtx->conchFile, 0); -

7484 if( rc==SQLITE_CANTOPEN && ((pFile->openFlags&O_RDWR) == 0) ){ -

7485 /* if (a) the open flags are not O_RDWR, (b) the conch isn't there, and -

7486 ** (c) the file system is read-only, then enable no-locking access. -

7487 ** Ugh, since O_RDONLY==0x0000 we test for !O_RDWR since unixOpen asserts -

7488 ** that openFlags will have only one of O_RDONLY or O_RDWR. -

7489 */ -

7490 struct statfs fsInfo; -

7491 struct stat conchInfo; -

7492 int goLockless = 0; -

7493 -

7494 if( osStat(pCtx->conchFilePath, &conchInfo) == -1 ) { -

7495 int err = errno; -

7496 if( (err==ENOENT) && (statfs(dbPath, &fsInfo) != -1) ){ -

7497 goLockless = (fsInfo.f_flags&MNT_RDONLY) == MNT_RDONLY; -

7498 } -

7499 } -

7500 if( goLockless ){ -

7501 pCtx->conchHeld = -1; /* read only FS/ lockless */ -

7502 rc = SQLITE_OK; -

7503 } -

7504 } -

7505 } -

7506 if( rc==SQLITE_OK && lockPath ){ -

7507 pCtx->lockProxyPath = sqlite3DbStrDup(0, lockPath); -

7508 } -

7509 -

7510 if( rc==SQLITE_OK ){ -

7511 pCtx->dbPath = sqlite3DbStrDup(0, dbPath); -

7512 if( pCtx->dbPath==NULL ){ -

7513 rc = SQLITE_NOMEM_BKPT; -

7514 } -

7515 } -

7516 if( rc==SQLITE_OK ){ -

7517 /* all memory is allocated, proxys are created and assigned, -

7518 ** switch the locking context and pMethod then return. -

7519 */ -

7520 pCtx->oldLockingContext = pFile->lockingContext; -

7521 pFile->lockingContext = pCtx; -

7522 pCtx->pOldMethod = pFile->pMethod; -

7523 pFile->pMethod = &proxyIoMethods; -

7524 }else{ -

7525 if( pCtx->conchFile ){ -

7526 pCtx->conchFile->pMethod->xClose((sqlite3_file *)pCtx->conchFile); -

7527 sqlite3_free(pCtx->conchFile); -

7528 } -

7529 sqlite3DbFree(0, pCtx->lockProxyPath); -

7530 sqlite3_free(pCtx->conchFilePath); -

7531 sqlite3_free(pCtx); -

7532 } -

7533 OSTRACE(("TRANSPROXY %d %s\n", pFile->h, -

7534 (rc==SQLITE_OK ? "ok" : "failed"))); -

7535 return rc; -

7536 } -

7537 -

7538 -

7539 /* -

7540 ** This routine handles sqlite3_file_control() calls that are specific -

7541 ** to proxy locking. -

7542 */ -

7543 static int proxyFileControl(sqlite3_file *id, int op, void *pArg){ -

7544 switch( op ){ -

7545 case SQLITE_FCNTL_GET_LOCKPROXYFILE: { -

7546 unixFile *pFile = (unixFile*)id; -

7547 if( pFile->pMethod == &proxyIoMethods ){ -

7548 proxyLockingContext *pCtx = (proxyLockingContext*)pFile->lockingContext; -

7549 proxyTakeConch(pFile); -

7550 if( pCtx->lockProxyPath ){ -

7551 *(const char **)pArg = pCtx->lockProxyPath; -

7552 }else{ -

7553 *(const char **)pArg = ":auto: (not held)"; -

7554 } -

7555 } else { -

7556 *(const char **)pArg = NULL; -

7557 } -

7558 return SQLITE_OK; -

7559 } -

7560 case SQLITE_FCNTL_SET_LOCKPROXYFILE: { -

7561 unixFile *pFile = (unixFile*)id; -

7562 int rc = SQLITE_OK; -

7563 int isProxyStyle = (pFile->pMethod == &proxyIoMethods); -

7564 if( pArg==NULL || (const char *)pArg==0 ){ -

7565 if( isProxyStyle ){ -

7566 /* turn off proxy locking - not supported. If support is added for -

7567 ** switching proxy locking mode off then it will need to fail if -

7568 ** the journal mode is WAL mode. -

7569 */ -

7570 rc = SQLITE_ERROR /*SQLITE_PROTOCOL? SQLITE_MISUSE?*/; -

7571 }else{ -

7572 /* turn off proxy locking - already off - NOOP */ -

7573 rc = SQLITE_OK; -

7574 } -

7575 }else{ -

7576 const char *proxyPath = (const char *)pArg; -

7577 if( isProxyStyle ){ -

7578 proxyLockingContext *pCtx = -

7579 (proxyLockingContext*)pFile->lockingContext; -

7580 if( !strcmp(pArg, ":auto:") -

7581 || (pCtx->lockProxyPath && -

7582 !strncmp(pCtx->lockProxyPath, proxyPath, MAXPATHLEN)) -

7583 ){ -

7584 rc = SQLITE_OK; -

7585 }else{ -

7586 rc = switchLockProxyPath(pFile, proxyPath); -

7587 } -

7588 }else{ -

7589 /* turn on proxy file locking */ -

7590 rc = proxyTransformUnixFile(pFile, proxyPath); -

7591 } -

7592 } -

7593 return rc; -

7594 } -

7595 default: { -

7596 assert( 0 ); /* The call assures that only valid opcodes are sent */ -

7597 } -

7598 } -

7599 /*NOTREACHED*/ -

7600 return SQLITE_ERROR; -

7601 } -

7602 -

7603 /* -

7604 ** Within this division (the proxying locking implementation) the procedures -

7605 ** above this point are all utilities. The lock-related methods of the -

7606 ** proxy-locking sqlite3_io_method object follow. -

7607 */ -

7608 -

7609 -

7610 /* -

7611 ** This routine checks if there is a RESERVED lock held on the specified -

7612 ** file by this or any other process. If such a lock is held, set *pResOut -

7613 ** to a non-zero value otherwise *pResOut is set to zero. The return value -

7614 ** is set to SQLITE_OK unless an I/O error occurs during lock checking. -

7615 */ -

7616 static int proxyCheckReservedLock(sqlite3_file *id, int *pResOut) { -

7617 unixFile *pFile = (unixFile*)id; -

7618 int rc = proxyTakeConch(pFile); -

7619 if( rc==SQLITE_OK ){ -

7620 proxyLockingContext *pCtx = (proxyLockingContext *)pFile->lockingContext; -

7621 if( pCtx->conchHeld>0 ){ -

7622 unixFile *proxy = pCtx->lockProxy; -

7623 return proxy->pMethod->xCheckReservedLock((sqlite3_file*)proxy, pResOut); -

7624 }else{ /* conchHeld < 0 is lockless */ -

7625 pResOut=0; -

7626 } -

7627 } -

7628 return rc; -

7629 } -

7630 -

7631 /* -

7632 ** Lock the file with the lock specified by parameter eFileLock - one -

7633 ** of the following: -

7634 ** -

7635 ** (1) SHARED_LOCK -

7636 ** (2) RESERVED_LOCK -

7637 ** (3) PENDING_LOCK -

7638 ** (4) EXCLUSIVE_LOCK -

7639 ** -

7640 ** Sometimes when requesting one lock state, additional lock states -

7641 ** are inserted in between. The locking might fail on one of the later -

7642 ** transitions leaving the lock state different from what it started but -

7643 ** still short of its goal. The following chart shows the allowed -

7644 ** transitions and the inserted intermediate states: -

7645 ** -

7646 ** UNLOCKED -> SHARED -

7647 ** SHARED -> RESERVED -

7648 ** SHARED -> (PENDING) -> EXCLUSIVE -

7649 ** RESERVED -> (PENDING) -> EXCLUSIVE -

7650 ** PENDING -> EXCLUSIVE -

7651 ** -

7652 ** This routine will only increase a lock. Use the sqlite3OsUnlock() -

7653 ** routine to lower a locking level. -

7654 */ -

7655 static int proxyLock(sqlite3_file *id, int eFileLock) { -

7656 unixFile *pFile = (unixFile*)id; -

7657 int rc = proxyTakeConch(pFile); -

7658 if( rc==SQLITE_OK ){ -

7659 proxyLockingContext *pCtx = (proxyLockingContext *)pFile->lockingContext; -

7660 if( pCtx->conchHeld>0 ){ -

7661 unixFile *proxy = pCtx->lockProxy; -

7662 rc = proxy->pMethod->xLock((sqlite3_file*)proxy, eFileLock); -

7663 pFile->eFileLock = proxy->eFileLock; -

7664 }else{ -

7665 /* conchHeld < 0 is lockless */ -

7666 } -

7667 } -

7668 return rc; -

7669 } -

7670 -

7671 -

7672 /* -

7673 ** Lower the locking level on file descriptor pFile to eFileLock. eFileLock -

7674 ** must be either NO_LOCK or SHARED_LOCK. -

7675 ** -

7676 ** If the locking level of the file descriptor is already at or below -

7677 ** the requested locking level, this routine is a no-op. -

7678 */ -

7679 static int proxyUnlock(sqlite3_file *id, int eFileLock) { -

7680 unixFile *pFile = (unixFile*)id; -

7681 int rc = proxyTakeConch(pFile); -

7682 if( rc==SQLITE_OK ){ -

7683 proxyLockingContext *pCtx = (proxyLockingContext *)pFile->lockingContext; -

7684 if( pCtx->conchHeld>0 ){ -

7685 unixFile *proxy = pCtx->lockProxy; -

7686 rc = proxy->pMethod->xUnlock((sqlite3_file*)proxy, eFileLock); -

7687 pFile->eFileLock = proxy->eFileLock; -

7688 }else{ -

7689 /* conchHeld < 0 is lockless */ -

7690 } -

7691 } -

7692 return rc; -

7693 } -

7694 -

7695 /* -

7696 ** Close a file that uses proxy locks. -

7697 */ -

7698 static int proxyClose(sqlite3_file *id) { -

7699 if( ALWAYS(id) ){ -

7700 unixFile *pFile = (unixFile*)id; -

7701 proxyLockingContext *pCtx = (proxyLockingContext *)pFile->lockingContext; -

7702 unixFile *lockProxy = pCtx->lockProxy; -

7703 unixFile *conchFile = pCtx->conchFile; -

7704 int rc = SQLITE_OK; -

7705 -

7706 if( lockProxy ){ -

7707 rc = lockProxy->pMethod->xUnlock((sqlite3_file*)lockProxy, NO_LOCK); -

7708 if( rc ) return rc; -

7709 rc = lockProxy->pMethod->xClose((sqlite3_file*)lockProxy); -

7710 if( rc ) return rc; -

7711 sqlite3_free(lockProxy); -

7712 pCtx->lockProxy = 0; -

7713 } -

7714 if( conchFile ){ -

7715 if( pCtx->conchHeld ){ -

7716 rc = proxyReleaseConch(pFile); -

7717 if( rc ) return rc; -

7718 } -

7719 rc = conchFile->pMethod->xClose((sqlite3_file*)conchFile); -

7720 if( rc ) return rc; -

7721 sqlite3_free(conchFile); -

7722 } -

7723 sqlite3DbFree(0, pCtx->lockProxyPath); -

7724 sqlite3_free(pCtx->conchFilePath); -

7725 sqlite3DbFree(0, pCtx->dbPath); -

7726 /* restore the original locking context and pMethod then close it */ -

7727 pFile->lockingContext = pCtx->oldLockingContext; -

7728 pFile->pMethod = pCtx->pOldMethod; -

7729 sqlite3_free(pCtx); -

7730 return pFile->pMethod->xClose(id); -

7731 } -

7732 return SQLITE_OK; -

7733 } -

7734 -

7735 -

7736 -

7737 #endif /* defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE */ -

7738 /* -

7739 ** The proxy locking style is intended for use with AFP filesystems. -

7740 ** And since AFP is only supported on MacOSX, the proxy locking is also -

7741 ** restricted to MacOSX. -

7742 ** -

7743 ** -

7744 ******************* End of the proxy lock implementation ********************** -

7745 ******************************************************************************/ -

7746 -

7747 /* -

7748 ** Initialize the operating system interface. -

7749 ** -

7750 ** This routine registers all VFS implementations for unix-like operating -

7751 ** systems. This routine, and the sqlite3_os_end() routine that follows, -

7752 ** should be the only routines in this file that are visible from other -

7753 ** files. -

7754 ** -

7755 ** This routine is called once during SQLite initialization and by a -

7756 ** single thread. The memory allocation and mutex subsystems have not -

7757 ** necessarily been initialized when this routine is called, and so they -

7758 ** should not be used. -

7759 */ -

7760 int sqlite3_os_init(void){ -

7761 /* -

7762 ** The following macro defines an initializer for an sqlite3_vfs object. -

7763 ** The name of the VFS is NAME. The pAppData is a pointer to a pointer -

7764 ** to the "finder" function. (pAppData is a pointer to a pointer because -

7765 ** silly C90 rules prohibit a void* from being cast to a function pointer -

7766 ** and so we have to go through the intermediate pointer to avoid problems -

7767 ** when compiling with -pedantic-errors on GCC.) -

7768 ** -

7769 ** The FINDER parameter to this macro is the name of the pointer to the -

7770 ** finder-function. The finder-function returns a pointer to the -

7771 ** sqlite_io_methods object that implements the desired locking -

7772 ** behaviors. See the division above that contains the IOMETHODS -

7773 ** macro for addition information on finder-functions. -

7774 ** -

7775 ** Most finders simply return a pointer to a fixed sqlite3_io_methods -

7776 ** object. But the "autolockIoFinder" available on MacOSX does a little -

7777 ** more than that; it looks at the filesystem type that hosts the -

7778 ** database file and tries to choose an locking method appropriate for -

7779 ** that filesystem time. -

7780 */ -

7781 #define UNIXVFS(VFSNAME, FINDER) { \ -

7782 3, /* iVersion */ \ -

7783 sizeof(unixFile), /* szOsFile */ \ -

7784 MAX_PATHNAME, /* mxPathname */ \ -

7785 0, /* pNext */ \ -

7786 VFSNAME, /* zName */ \ -

7787 (void*)&FINDER, /* pAppData */ \ -

7788 unixOpen, /* xOpen */ \ -

7789 unixDelete, /* xDelete */ \ -

7790 unixAccess, /* xAccess */ \ -

7791 unixFullPathname, /* xFullPathname */ \ -

7792 unixDlOpen, /* xDlOpen */ \ -

7793 unixDlError, /* xDlError */ \ -

7794 unixDlSym, /* xDlSym */ \ -

7795 unixDlClose, /* xDlClose */ \ -

7796 unixRandomness, /* xRandomness */ \ -

7797 unixSleep, /* xSleep */ \ -

7798 unixCurrentTime, /* xCurrentTime */ \ -

7799 unixGetLastError, /* xGetLastError */ \ -

7800 unixCurrentTimeInt64, /* xCurrentTimeInt64 */ \ -

7801 unixSetSystemCall, /* xSetSystemCall */ \ -

7802 unixGetSystemCall, /* xGetSystemCall */ \ -

7803 unixNextSystemCall, /* xNextSystemCall */ \ -

7804 } -

7805 -

7806 /* -

7807 ** All default VFSes for unix are contained in the following array. -

7808 ** -

7809 ** Note that the sqlite3_vfs.pNext field of the VFS object is modified -

7810 ** by the SQLite core when the VFS is registered. So the following -

7811 ** array cannot be const. -

7812 */ -

7813 static sqlite3_vfs aVfs[] = { -

7814 #if SQLITE_ENABLE_LOCKING_STYLE && defined(__APPLE__) -

7815 UNIXVFS("unix", autolockIoFinder ), -

7816 #elif OS_VXWORKS -

7817 UNIXVFS("unix", vxworksIoFinder ), -

7818 #else -

7819 UNIXVFS("unix", posixIoFinder ), -

7820 #endif -

7821 UNIXVFS("unix-none", nolockIoFinder ), -

7822 UNIXVFS("unix-dotfile", dotlockIoFinder ), -

7823 UNIXVFS("unix-excl", posixIoFinder ), -

7824 #if OS_VXWORKS -

7825 UNIXVFS("unix-namedsem", semIoFinder ), -

7826 #endif -

7827 #if SQLITE_ENABLE_LOCKING_STYLE || OS_VXWORKS -

7828 UNIXVFS("unix-posix", posixIoFinder ), -

7829 #endif -

7830 #if SQLITE_ENABLE_LOCKING_STYLE -

7831 UNIXVFS("unix-flock", flockIoFinder ), -

7832 #endif -

7833 #if SQLITE_ENABLE_LOCKING_STYLE && defined(__APPLE__) -

7834 UNIXVFS("unix-afp", afpIoFinder ), -

7835 UNIXVFS("unix-nfs", nfsIoFinder ), -

7836 UNIXVFS("unix-proxy", proxyIoFinder ), -

7837 #endif -

7838 }; -

7839 unsigned int i; /* Loop counter */ -

7840 -

7841 /* Double-check that the aSyscall[] array has been constructed -

7842 ** correctly. See ticket [bb3a86e890c8e96ab] */ -

7843 assert( ArraySize(aSyscall)==29 ); -

7844 -

7845 /* Register all VFSes defined in the aVfs[] array */ -

7846

for(i=0; i<(sizeof(aVfs)/sizeof(sqlite3_vfs)); i++){

i<(sizeof(aVfs...(sqlite3_vfs))

Description

TRUE

evaluated 2120 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

FALSE

evaluated 530 times by 438 tests

Evaluated by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

530-2120

7847 sqlite3_vfs_register(&aVfs[i], i==0); -

7848

}

executed 2120 times by 438 tests: end of block

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

2120

7849 unixBigLock = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_VFS1); -

7850

return SQLITE_OK;

executed 530 times by 438 tests: return 0;

Executed by:

Self test
Self test (10)
Self test (100)
Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (106)
Self test (107)
Self test (108)
Self test (109)
Self test (11)
Self test (110)
Self test (111)
Self test (112)
Self test (113)
Self test (114)
Self test (115)
Self test (116)
Self test (117)
Self test (118)
Self test (119)
Self test (12)
Self test (120)
...

530

7851 } -

7852 -

7853 /* -

7854 ** Shutdown the operating system interface. -

7855 ** -

7856 ** Some operating systems might need to do some cleanup in this routine, -

7857 ** to release dynamically allocated objects. But not on unix. -

7858 ** This routine is a no-op for unix. -

7859 */ -

7860 int sqlite3_os_end(void){ -

7861 unixBigLock = 0; -

7862

return SQLITE_OK;

executed 93 times by 6 tests: return 0;

Executed by:

Self test (101)
Self test (102)
Self test (103)
Self test (104)
Self test (105)
Self test (438)

7863 } -

7864 -

7865 #endif /* SQLITE_OS_UNIX */ -

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