OpenCoverage

truncate.c

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1/* truncate -- truncate or extend the length of files.-
2 Copyright (C) 2008-2018 Free Software Foundation, Inc.-
3-
4 This program is free software: you can redistribute it and/or modify-
5 it under the terms of the GNU General Public License as published by-
6 the Free Software Foundation, either version 3 of the License, or-
7 (at your option) any later version.-
8-
9 This program is distributed in the hope that it will be useful,-
10 but WITHOUT ANY WARRANTY; without even the implied warranty of-
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the-
12 GNU General Public License for more details.-
13-
14 You should have received a copy of the GNU General Public License-
15 along with this program. If not, see <https://www.gnu.org/licenses/>. */-
16-
17/* Written by Pádraig Brady-
18-
19 This is backwards compatible with the FreeBSD utility, but is more-
20 flexible wrt the size specifications and the use of long options,-
21 to better fit the "GNU" environment. */-
22-
23#include <config.h> /* sets _FILE_OFFSET_BITS=64 etc. */-
24#include <stdio.h>-
25#include <getopt.h>-
26#include <sys/types.h>-
27-
28#include "system.h"-
29#include "die.h"-
30#include "error.h"-
31#include "quote.h"-
32#include "stat-size.h"-
33#include "xdectoint.h"-
34-
35/* The official name of this program (e.g., no 'g' prefix). */-
36#define PROGRAM_NAME "truncate"-
37-
38#define AUTHORS proper_name ("Padraig Brady")-
39-
40/* (-c) If true, don't create if not already there */-
41static bool no_create;-
42-
43/* (-o) If true, --size refers to blocks not bytes */-
44static bool block_mode;-
45-
46/* (-r) Reference file to use size from */-
47static char const *ref_file;-
48-
49static struct option const longopts[] =-
50{-
51 {"no-create", no_argument, NULL, 'c'},-
52 {"io-blocks", no_argument, NULL, 'o'},-
53 {"reference", required_argument, NULL, 'r'},-
54 {"size", required_argument, NULL, 's'},-
55 {GETOPT_HELP_OPTION_DECL},-
56 {GETOPT_VERSION_OPTION_DECL},-
57 {NULL, 0, NULL, 0}-
58};-
59-
60typedef enum-
61{ rm_abs = 0, rm_rel, rm_min, rm_max, rm_rdn, rm_rup } rel_mode_t;-
62-
63void-
64usage (int status)-
65{-
66 if (status != EXIT_SUCCESS)
status != 0Description
TRUEevaluated 9 times by 1 test
Evaluated by:
  • truncate
FALSEevaluated 9 times by 1 test
Evaluated by:
  • truncate
9
67 emit_try_help ();
executed 9 times by 1 test: end of block
Executed by:
  • truncate
9
68 else-
69 {-
70 printf (_("Usage: %s OPTION... FILE...\n"), program_name);-
71 fputs (_("\-
72Shrink or extend the size of each FILE to the specified size\n\-
73\n\-
74A FILE argument that does not exist is created.\n\-
75\n\-
76If a FILE is larger than the specified size, the extra data is lost.\n\-
77If a FILE is shorter, it is extended and the extended part (hole)\n\-
78reads as zero bytes.\n\-
79"), stdout);-
80-
81 emit_mandatory_arg_note ();-
82-
83 fputs (_("\-
84 -c, --no-create do not create any files\n\-
85"), stdout);-
86 fputs (_("\-
87 -o, --io-blocks treat SIZE as number of IO blocks instead of bytes\n\-
88"), stdout);-
89 fputs (_("\-
90 -r, --reference=RFILE base size on RFILE\n\-
91 -s, --size=SIZE set or adjust the file size by SIZE bytes\n"), stdout);-
92 fputs (HELP_OPTION_DESCRIPTION, stdout);-
93 fputs (VERSION_OPTION_DESCRIPTION, stdout);-
94 emit_size_note ();-
95 fputs (_("\n\-
96SIZE may also be prefixed by one of the following modifying characters:\n\-
97'+' extend by, '-' reduce by, '<' at most, '>' at least,\n\-
98'/' round down to multiple of, '%' round up to multiple of.\n"), stdout);-
99 emit_ancillary_info (PROGRAM_NAME);-
100 }
executed 9 times by 1 test: end of block
Executed by:
  • truncate
9
101 exit (status);
executed 18 times by 1 test: exit (status);
Executed by:
  • truncate
18
102}-
103-
104/* return true on success, false on error. */-
105static bool-
106do_ftruncate (int fd, char const *fname, off_t ssize, off_t rsize,-
107 rel_mode_t rel_mode)-
108{-
109 struct stat sb;-
110 off_t nsize;-
111-
112 if ((block_mode || (rel_mode && rsize < 0)) && fstat (fd, &sb) != 0)
block_modeDescription
TRUEevaluated 1 time by 1 test
Evaluated by:
  • truncate
FALSEevaluated 37 times by 1 test
Evaluated by:
  • truncate
rel_modeDescription
TRUEevaluated 6 times by 1 test
Evaluated by:
  • truncate
FALSEevaluated 31 times by 1 test
Evaluated by:
  • truncate
rsize < 0Description
TRUEevaluated 5 times by 1 test
Evaluated by:
  • truncate
FALSEevaluated 1 time by 1 test
Evaluated by:
  • truncate
fstat (fd, &sb) != 0Description
TRUEnever evaluated
FALSEevaluated 6 times by 1 test
Evaluated by:
  • truncate
0-37
113 {-
114 error (0, errno, _("cannot fstat %s"), quoteaf (fname));-
115 return false;
never executed: return 0 ;
0
116 }-
117 if (block_mode)
block_modeDescription
TRUEevaluated 1 time by 1 test
Evaluated by:
  • truncate
FALSEevaluated 37 times by 1 test
Evaluated by:
  • truncate
1-37
118 {-
119 off_t const blksize = ST_BLKSIZE (sb);
0 < (sb).st_blksizeDescription
TRUEevaluated 1 time by 1 test
Evaluated by:
  • truncate
FALSEnever evaluated
(sb).st_blksiz..._t)-1) / 8 + 1Description
TRUEevaluated 1 time by 1 test
Evaluated by:
  • truncate
FALSEnever evaluated
0-1
120 if (ssize < OFF_T_MIN / blksize || ssize > OFF_T_MAX / blksize)
ssize < ((off_...)))) / blksizeDescription
TRUEnever evaluated
FALSEevaluated 1 time by 1 test
Evaluated by:
  • truncate
ssize > ((off_...1))) / blksizeDescription
TRUEevaluated 1 time by 1 test
Evaluated by:
  • truncate
FALSEnever evaluated
0-1
121 {-
122 error (0, 0,-
123 _("overflow in %" PRIdMAX-
124 " * %" PRIdMAX " byte blocks for file %s"),-
125 (intmax_t) ssize, (intmax_t) blksize,-
126 quoteaf (fname));-
127 return false;
executed 1 time by 1 test: return 0 ;
Executed by:
  • truncate
1
128 }-
129 ssize *= blksize;-
130 }
never executed: end of block
0
131 if (rel_mode)
rel_modeDescription
TRUEevaluated 6 times by 1 test
Evaluated by:
  • truncate
FALSEevaluated 31 times by 1 test
Evaluated by:
  • truncate
6-31
132 {-
133 uintmax_t fsize;-
134-
135 if (0 <= rsize)
0 <= rsizeDescription
TRUEevaluated 1 time by 1 test
Evaluated by:
  • truncate
FALSEevaluated 5 times by 1 test
Evaluated by:
  • truncate
1-5
136 fsize = rsize;
executed 1 time by 1 test: fsize = rsize;
Executed by:
  • truncate
1
137 else-
138 {-
139 off_t file_size;-
140 if (usable_st_size (&sb))
usable_st_size (&sb)Description
TRUEevaluated 5 times by 1 test
Evaluated by:
  • truncate
FALSEnever evaluated
0-5
141 {-
142 file_size = sb.st_size;-
143 if (file_size < 0)
file_size < 0Description
TRUEnever evaluated
FALSEevaluated 5 times by 1 test
Evaluated by:
  • truncate
0-5
144 {-
145 /* Sanity check. Overflow is the only reason I can think-
146 this would ever go negative. */-
147 error (0, 0, _("%s has unusable, apparently negative size"),-
148 quoteaf (fname));-
149 return false;
never executed: return 0 ;
0
150 }-
151 }
executed 5 times by 1 test: end of block
Executed by:
  • truncate
5
152 else-
153 {-
154 file_size = lseek (fd, 0, SEEK_END);-
155 if (file_size < 0)
file_size < 0Description
TRUEnever evaluated
FALSEnever evaluated
0
156 {-
157 error (0, errno, _("cannot get the size of %s"),-
158 quoteaf (fname));-
159 return false;
never executed: return 0 ;
0
160 }-
161 }
never executed: end of block
0
162 fsize = file_size;-
163 }
executed 5 times by 1 test: end of block
Executed by:
  • truncate
5
164-
165 if (rel_mode == rm_min)
rel_mode == rm_minDescription
TRUEevaluated 1 time by 1 test
Evaluated by:
  • truncate
FALSEevaluated 5 times by 1 test
Evaluated by:
  • truncate
1-5
166 nsize = MAX (fsize, (uintmax_t) ssize);
executed 1 time by 1 test: nsize = ((( fsize )>( (uintmax_t) ssize ))?( fsize ):( (uintmax_t) ssize )) ;
Executed by:
  • truncate
(( fsize )>( (...ax_t) ssize ))Description
TRUEnever evaluated
FALSEevaluated 1 time by 1 test
Evaluated by:
  • truncate
0-1
167 else if (rel_mode == rm_max)
rel_mode == rm_maxDescription
TRUEnever evaluated
FALSEevaluated 5 times by 1 test
Evaluated by:
  • truncate
0-5
168 nsize = MIN (fsize, (uintmax_t) ssize);
never executed: nsize = ((( fsize )<( (uintmax_t) ssize ))?( fsize ):( (uintmax_t) ssize )) ;
(( fsize )<( (...ax_t) ssize ))Description
TRUEnever evaluated
FALSEnever evaluated
0
169 else if (rel_mode == rm_rdn)
rel_mode == rm_rdnDescription
TRUEnever evaluated
FALSEevaluated 5 times by 1 test
Evaluated by:
  • truncate
0-5
170 /* 0..ssize-1 -> 0 */-
171 nsize = (fsize / ssize) * ssize;
never executed: nsize = (fsize / ssize) * ssize;
0
172 else if (rel_mode == rm_rup)
rel_mode == rm_rupDescription
TRUEnever evaluated
FALSEevaluated 5 times by 1 test
Evaluated by:
  • truncate
0-5
173 /* 1..ssize -> ssize */-
174 {-
175 /* Here ssize>=1 && fsize>=0 */-
176 uintmax_t const overflow = ((fsize + ssize - 1) / ssize) * ssize;-
177 if (overflow > OFF_T_MAX)
overflow > ((o... 1) * 2 + 1)))Description
TRUEnever evaluated
FALSEnever evaluated
0
178 {-
179 error (0, 0, _("overflow rounding up size of file %s"),-
180 quoteaf (fname));-
181 return false;
never executed: return 0 ;
0
182 }-
183 nsize = overflow;-
184 }
never executed: end of block
0
185 else-
186 {-
187 if (ssize > OFF_T_MAX - (off_t)fsize)
ssize > ((off_...- (off_t)fsizeDescription
TRUEevaluated 1 time by 1 test
Evaluated by:
  • truncate
FALSEevaluated 4 times by 1 test
Evaluated by:
  • truncate
1-4
188 {-
189 error (0, 0, _("overflow extending size of file %s"),-
190 quoteaf (fname));-
191 return false;
executed 1 time by 1 test: return 0 ;
Executed by:
  • truncate
1
192 }-
193 nsize = fsize + ssize;-
194 }
executed 4 times by 1 test: end of block
Executed by:
  • truncate
4
195 }-
196 else-
197 nsize = ssize;
executed 31 times by 1 test: nsize = ssize;
Executed by:
  • truncate
31
198 if (nsize < 0)
nsize < 0Description
TRUEevaluated 1 time by 1 test
Evaluated by:
  • truncate
FALSEevaluated 35 times by 1 test
Evaluated by:
  • truncate
1-35
199 nsize = 0;
executed 1 time by 1 test: nsize = 0;
Executed by:
  • truncate
1
200-
201 if (ftruncate (fd, nsize) == -1) /* note updates mtime & ctime */
ftruncate (fd, nsize) == -1Description
TRUEevaluated 1 time by 1 test
Evaluated by:
  • truncate
FALSEevaluated 35 times by 1 test
Evaluated by:
  • truncate
1-35
202 {-
203 error (0, errno,-
204 _("failed to truncate %s at %" PRIdMAX " bytes"), quoteaf (fname),-
205 (intmax_t) nsize);-
206 return false;
executed 1 time by 1 test: return 0 ;
Executed by:
  • truncate
1
207 }-
208-
209 return true;
executed 35 times by 1 test: return 1 ;
Executed by:
  • truncate
35
210}-
211-
212int-
213main (int argc, char **argv)-
214{-
215 bool got_size = false;-
216 bool errors = false;-
217 off_t size IF_LINT ( = 0);-
218 off_t rsize = -1;-
219 rel_mode_t rel_mode = rm_abs;-
220 int c, fd = -1, oflags;-
221 char const *fname;-
222-
223 initialize_main (&argc, &argv);-
224 set_program_name (argv[0]);-
225 setlocale (LC_ALL, "");-
226 bindtextdomain (PACKAGE, LOCALEDIR);-
227 textdomain (PACKAGE);-
228-
229 atexit (close_stdout);-
230-
231 while ((c = getopt_long (argc, argv, "cor:s:", longopts, NULL)) != -1)
(c = getopt_lo... *)0) )) != -1Description
TRUEevaluated 92 times by 1 test
Evaluated by:
  • truncate
FALSEevaluated 48 times by 1 test
Evaluated by:
  • truncate
48-92
232 {-
233 switch (c)-
234 {-
235 case 'c':
executed 3 times by 1 test: case 'c':
Executed by:
  • truncate
3
236 no_create = true;-
237 break;
executed 3 times by 1 test: break;
Executed by:
  • truncate
3
238-
239 case 'o':
executed 4 times by 1 test: case 'o':
Executed by:
  • truncate
4
240 block_mode = true;-
241 break;
executed 4 times by 1 test: break;
Executed by:
  • truncate
4
242-
243 case 'r':
executed 8 times by 1 test: case 'r':
Executed by:
  • truncate
8
244 ref_file = optarg;-
245 break;
executed 8 times by 1 test: break;
Executed by:
  • truncate
8
246-
247 case 's':
executed 53 times by 1 test: case 's':
Executed by:
  • truncate
53
248 /* skip any whitespace */-
249 while (isspace (to_uchar (*optarg)))
((*__ctype_b_l...int) _ISspace)Description
TRUEevaluated 3 times by 1 test
Evaluated by:
  • truncate
FALSEevaluated 53 times by 1 test
Evaluated by:
  • truncate
3-53
250 optarg++;
executed 3 times by 1 test: optarg++;
Executed by:
  • truncate
3
251 switch (*optarg)-
252 {-
253 case '<':
never executed: case '<':
0
254 rel_mode = rm_max;-
255 optarg++;-
256 break;
never executed: break;
0
257 case '>':
executed 3 times by 1 test: case '>':
Executed by:
  • truncate
3
258 rel_mode = rm_min;-
259 optarg++;-
260 break;
executed 3 times by 1 test: break;
Executed by:
  • truncate
3
261 case '/':
executed 1 time by 1 test: case '/':
Executed by:
  • truncate
1
262 rel_mode = rm_rdn;-
263 optarg++;-
264 break;
executed 1 time by 1 test: break;
Executed by:
  • truncate
1
265 case '%':
executed 1 time by 1 test: case '%':
Executed by:
  • truncate
1
266 rel_mode = rm_rup;-
267 optarg++;-
268 break;
executed 1 time by 1 test: break;
Executed by:
  • truncate
1
269 }-
270 /* skip any whitespace */-
271 while (isspace (to_uchar (*optarg)))
((*__ctype_b_l...int) _ISspace)Description
TRUEevaluated 1 time by 1 test
Evaluated by:
  • truncate
FALSEevaluated 53 times by 1 test
Evaluated by:
  • truncate
1-53
272 optarg++;
executed 1 time by 1 test: optarg++;
Executed by:
  • truncate
1
273 if (*optarg == '+' || *optarg == '-')
*optarg == '+'Description
TRUEevaluated 7 times by 1 test
Evaluated by:
  • truncate
FALSEevaluated 46 times by 1 test
Evaluated by:
  • truncate
*optarg == '-'Description
TRUEevaluated 4 times by 1 test
Evaluated by:
  • truncate
FALSEevaluated 42 times by 1 test
Evaluated by:
  • truncate
4-46
274 {-
275 if (rel_mode)
rel_modeDescription
TRUEevaluated 2 times by 1 test
Evaluated by:
  • truncate
FALSEevaluated 9 times by 1 test
Evaluated by:
  • truncate
2-9
276 {-
277 error (0, 0, _("multiple relative modifiers specified"));-
278 /* Note other combinations are flagged as invalid numbers */-
279 usage (EXIT_FAILURE);-
280 }
never executed: end of block
0
281 rel_mode = rm_rel;-
282 }
executed 9 times by 1 test: end of block
Executed by:
  • truncate
9
283 /* Support dd BLOCK size suffixes + lowercase g,t,m for bsd compat.-
284 Note we don't support dd's b=512, c=1, w=2 or 21x512MiB formats. */-
285 size = xdectoimax (optarg, OFF_T_MIN, OFF_T_MAX, "EgGkKmMPtTYZ0",-
286 _("Invalid number"), 0);-
287 /* Rounding to multiple of 0 is nonsensical */-
288 if ((rel_mode == rm_rup || rel_mode == rm_rdn) && size == 0)
rel_mode == rm_rupDescription
TRUEevaluated 1 time by 1 test
Evaluated by:
  • truncate
FALSEevaluated 44 times by 1 test
Evaluated by:
  • truncate
rel_mode == rm_rdnDescription
TRUEevaluated 1 time by 1 test
Evaluated by:
  • truncate
FALSEevaluated 43 times by 1 test
Evaluated by:
  • truncate
size == 0Description
TRUEevaluated 2 times by 1 test
Evaluated by:
  • truncate
FALSEnever evaluated
0-44
289 die (EXIT_FAILURE, 0, _("division by zero"));
executed 2 times by 1 test: ((!!sizeof (struct { _Static_assert ( 1 , "verify_expr (" "1" ", " "(error (1, 0, dcgettext (((void *)0), \"division by zero\", 5)), assume (false))" ")"); int _gl_dummy; })) ? ((error ( 1 , 0, dcgettext (((void *)0), "division by zero" , 5) ), (( 0 ) ? (void) 0 : __builtin_unreachable ()))) : ((error ( 1 , 0, dcgettext (((void *)0), "division by zero" , 5) ), (( 0 ) ? (void) 0 : __builtin_unreachable ()))));
Executed by:
  • truncate
2
290 got_size = true;-
291 break;
executed 43 times by 1 test: break;
Executed by:
  • truncate
43
292-
293 case_GETOPT_HELP_CHAR;
never executed: break;
executed 9 times by 1 test: case GETOPT_HELP_CHAR:
Executed by:
  • truncate
0-9
294-
295 case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
executed 12 times by 1 test: exit ( 0 );
Executed by:
  • truncate
never executed: break;
executed 12 times by 1 test: case GETOPT_VERSION_CHAR:
Executed by:
  • truncate
0-12
296-
297 default:
executed 3 times by 1 test: default:
Executed by:
  • truncate
3
298 usage (EXIT_FAILURE);-
299 }
never executed: end of block
0
300 }-
301-
302 argv += optind;-
303 argc -= optind;-
304-
305 /* must specify either size or reference file */-
306 if (!ref_file && !got_size)
!ref_fileDescription
TRUEevaluated 42 times by 1 test
Evaluated by:
  • truncate
FALSEevaluated 6 times by 1 test
Evaluated by:
  • truncate
!got_sizeDescription
TRUEevaluated 1 time by 1 test
Evaluated by:
  • truncate
FALSEevaluated 41 times by 1 test
Evaluated by:
  • truncate
1-42
307 {-
308 error (0, 0, _("you must specify either %s or %s"),-
309 quote_n (0, "--size"), quote_n (1, "--reference"));-
310 usage (EXIT_FAILURE);-
311 }
never executed: end of block
0
312 /* must specify a relative size with a reference file */-
313 if (ref_file && got_size && !rel_mode)
ref_fileDescription
TRUEevaluated 6 times by 1 test
Evaluated by:
  • truncate
FALSEevaluated 41 times by 1 test
Evaluated by:
  • truncate
got_sizeDescription
TRUEevaluated 2 times by 1 test
Evaluated by:
  • truncate
FALSEevaluated 4 times by 1 test
Evaluated by:
  • truncate
!rel_modeDescription
TRUEevaluated 1 time by 1 test
Evaluated by:
  • truncate
FALSEevaluated 1 time by 1 test
Evaluated by:
  • truncate
1-41
314 {-
315 error (0, 0, _("you must specify a relative %s with %s"),-
316 quote_n (0, "--size"), quote_n (1, "--reference"));-
317 usage (EXIT_FAILURE);-
318 }
never executed: end of block
0
319 /* block_mode without size is not valid */-
320 if (block_mode && !got_size)
block_modeDescription
TRUEevaluated 2 times by 1 test
Evaluated by:
  • truncate
FALSEevaluated 44 times by 1 test
Evaluated by:
  • truncate
!got_sizeDescription
TRUEevaluated 1 time by 1 test
Evaluated by:
  • truncate
FALSEevaluated 1 time by 1 test
Evaluated by:
  • truncate
1-44
321 {-
322 error (0, 0, _("%s was specified but %s was not"),-
323 quote_n (0, "--io-blocks"), quote_n (1, "--size"));-
324 usage (EXIT_FAILURE);-
325 }
never executed: end of block
0
326 /* must specify at least 1 file */-
327 if (argc < 1)
argc < 1Description
TRUEevaluated 1 time by 1 test
Evaluated by:
  • truncate
FALSEevaluated 44 times by 1 test
Evaluated by:
  • truncate
1-44
328 {-
329 error (0, 0, _("missing file operand"));-
330 usage (EXIT_FAILURE);-
331 }
never executed: end of block
0
332-
333 if (ref_file)
ref_fileDescription
TRUEevaluated 4 times by 1 test
Evaluated by:
  • truncate
FALSEevaluated 40 times by 1 test
Evaluated by:
  • truncate
4-40
334 {-
335 struct stat sb;-
336 off_t file_size = -1;-
337 if (stat (ref_file, &sb) != 0)
stat (ref_file, &sb) != 0Description
TRUEnever evaluated
FALSEevaluated 4 times by 1 test
Evaluated by:
  • truncate
0-4
338 die (EXIT_FAILURE, errno, _("cannot stat %s"), quoteaf (ref_file));
never executed: ((!!sizeof (struct { _Static_assert ( 1 , "verify_expr (" "1" ", " "(error (1, (*__errno_location ()), dcgettext (((void *)0), \"cannot stat %s\", 5), quotearg_style (shell_escape_always_quoting_style, ref_file)), assume (false))" ")"); int _gl_dummy; }))...le)), (( 0 ) ? (void) 0 : __builtin_unreachable ()))) : ((error ( 1 , (*__errno_location ()) , dcgettext (((void *)0), "cannot stat %s" , 5) , quotearg_style (shell_escape_always_quoting_style, ref_file)), (( 0 ) ? (void) 0 : __builtin_unreachable ()))));
0
339 if (usable_st_size (&sb))
usable_st_size (&sb)Description
TRUEevaluated 4 times by 1 test
Evaluated by:
  • truncate
FALSEnever evaluated
0-4
340 file_size = sb.st_size;
executed 4 times by 1 test: file_size = sb.st_size;
Executed by:
  • truncate
4
341 else-
342 {-
343 int ref_fd = open (ref_file, O_RDONLY);-
344 if (0 <= ref_fd)
0 <= ref_fdDescription
TRUEnever evaluated
FALSEnever evaluated
0
345 {-
346 off_t file_end = lseek (ref_fd, 0, SEEK_END);-
347 int saved_errno = errno;-
348 close (ref_fd); /* ignore failure */-
349 if (0 <= file_end)
0 <= file_endDescription
TRUEnever evaluated
FALSEnever evaluated
0
350 file_size = file_end;
never executed: file_size = file_end;
0
351 else-
352 {-
353 /* restore, in case close clobbered it. */-
354 errno = saved_errno;-
355 }
never executed: end of block
0
356 }-
357 }
never executed: end of block
0
358 if (file_size < 0)
file_size < 0Description
TRUEnever evaluated
FALSEevaluated 4 times by 1 test
Evaluated by:
  • truncate
0-4
359 die (EXIT_FAILURE, errno, _("cannot get the size of %s"),
never executed: ((!!sizeof (struct { _Static_assert ( 1 , "verify_expr (" "1" ", " "(error (1, (*__errno_location ()), dcgettext (((void *)0), \"cannot get the size of %s\", 5), quotearg_style (shell_escape_always_quoting_style, ref_file)), assume (false))" ")"); int _gl... ? (void) 0 : __builtin_unreachable ()))) : ((error ( 1 , (*__errno_location ()) , dcgettext (((void *)0), "cannot get the size of %s" , 5) , quotearg_style (shell_escape_always_quoting_style, ref_file)), (( 0 ) ? (void) 0 : __builtin_unreachable ())))) ;
0
360 quoteaf (ref_file));
never executed: ((!!sizeof (struct { _Static_assert ( 1 , "verify_expr (" "1" ", " "(error (1, (*__errno_location ()), dcgettext (((void *)0), \"cannot get the size of %s\", 5), quotearg_style (shell_escape_always_quoting_style, ref_file)), assume (false))" ")"); int _gl... ? (void) 0 : __builtin_unreachable ()))) : ((error ( 1 , (*__errno_location ()) , dcgettext (((void *)0), "cannot get the size of %s" , 5) , quotearg_style (shell_escape_always_quoting_style, ref_file)), (( 0 ) ? (void) 0 : __builtin_unreachable ())))) ;
0
361 if (!got_size)
!got_sizeDescription
TRUEevaluated 3 times by 1 test
Evaluated by:
  • truncate
FALSEevaluated 1 time by 1 test
Evaluated by:
  • truncate
1-3
362 size = file_size;
executed 3 times by 1 test: size = file_size;
Executed by:
  • truncate
3
363 else-
364 rsize = file_size;
executed 1 time by 1 test: rsize = file_size;
Executed by:
  • truncate
1
365 }-
366-
367 oflags = O_WRONLY | (no_create ? 0 : O_CREAT) | O_NONBLOCK;-
368-
369 while ((fname = *argv++) != NULL)
(fname = *argv...!= ((void *)0)Description
TRUEevaluated 44 times by 1 test
Evaluated by:
  • truncate
FALSEevaluated 44 times by 1 test
Evaluated by:
  • truncate
44
370 {-
371 if ((fd = open (fname, oflags, MODE_RW_UGO)) == -1)
(fd = open (fn...> 3) ))) == -1Description
TRUEevaluated 6 times by 1 test
Evaluated by:
  • truncate
FALSEevaluated 38 times by 1 test
Evaluated by:
  • truncate
6-38
372 {-
373 /* 'truncate -s0 -c no-such-file' shouldn't gen error-
374 'truncate -s0 no-such-dir/file' should gen ENOENT error-
375 'truncate -s0 no-such-dir/' should gen EISDIR error-
376 'truncate -s0 .' should gen EISDIR error */-
377 if (!(no_create && errno == ENOENT))
no_createDescription
TRUEevaluated 1 time by 1 test
Evaluated by:
  • truncate
FALSEevaluated 5 times by 1 test
Evaluated by:
  • truncate
(*__errno_location ()) == 2Description
TRUEevaluated 1 time by 1 test
Evaluated by:
  • truncate
FALSEnever evaluated
0-5
378 {-
379 error (0, errno, _("cannot open %s for writing"),-
380 quoteaf (fname));-
381 errors = true;-
382 }
executed 5 times by 1 test: end of block
Executed by:
  • truncate
5
383 continue;
executed 6 times by 1 test: continue;
Executed by:
  • truncate
6
384 }-
385-
386-
387 if (fd != -1)
fd != -1Description
TRUEevaluated 38 times by 1 test
Evaluated by:
  • truncate
FALSEnever evaluated
0-38
388 {-
389 errors |= !do_ftruncate (fd, fname, size, rsize, rel_mode);-
390 if (close (fd) != 0)
close (fd) != 0Description
TRUEnever evaluated
FALSEevaluated 38 times by 1 test
Evaluated by:
  • truncate
0-38
391 {-
392 error (0, errno, _("failed to close %s"), quoteaf (fname));-
393 errors = true;-
394 }
never executed: end of block
0
395 }
executed 38 times by 1 test: end of block
Executed by:
  • truncate
38
396 }
executed 38 times by 1 test: end of block
Executed by:
  • truncate
38
397-
398 return errors ? EXIT_FAILURE : EXIT_SUCCESS;
executed 44 times by 1 test: return errors ? 1 : 0 ;
Executed by:
  • truncate
44
399}-
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