fclose.c

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/home/opencoverage/opencoverage/guest-scripts/coreutils/src/gnulib/lib/fclose.c

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/* fclose replacement.

This program is free software: you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation; either version 3 of the License, or

(at your option) any later version.

This program is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

GNU General Public License for more details.

You should have received a copy of the GNU General Public License

along with this program. If not, see <https://www.gnu.org/licenses/>. */

#include <config.h>

/* Specification. */

#include <stdio.h>

#include <errno.h>

#include <unistd.h>

#include "freading.h"

#if HAVE_MSVC_INVALID_PARAMETER_HANDLER

# include "msvc-inval.h"

#endif

#undef fclose

#if HAVE_MSVC_INVALID_PARAMETER_HANDLER

static int

fclose_nothrow (FILE *fp)

{

int result;

TRY_MSVC_INVAL

{

result = fclose (fp);

}

CATCH_MSVC_INVAL

{

result = EOF;

errno = EBADF;

}

DONE_MSVC_INVAL;

return result;

}

#else

# define fclose_nothrow fclose

#endif

/* Override fclose() to call the overridden fflush() or close(). */

int

rpl_fclose (FILE *fp)

{

int saved_errno = 0;

int fd;

int result = 0;

/* Don't change behavior on memstreams. */

fd = fileno (fp);

if (fd < 0)

fd < 0	Description
TRUE	never evaluated
FALSE	evaluated 90762 times by 106 tests Evaluated by: [ b2sum base32 base64 basename cat chcon chgrp chmod chown chroot cksum comm cp csplit cut date dd df dir dircolors dirname du echo env ...

0-90762

return fclose_nothrow (fp);

never executed: return fclose (fp);

/* We only need to flush the file if it is not reading or if it is

seekable. This only guarantees the file position of input files

if the fflush module is also in use. */

if ((!freading (fp) || lseek (fileno (fp), 0, SEEK_CUR) != -1)

!(__freading (fp) != 0)	Description
TRUE	evaluated 79246 times by 106 tests Evaluated by: [ b2sum base32 base64 basename cat chcon chgrp chmod chown chroot cksum comm cp csplit cut date dd df dir dircolors dirname du echo env ...
FALSE	evaluated 11516 times by 39 tests Evaluated by: b2sum base32 base64 cksum comm cp cut date df dircolors du expand fmt fold ginstall join ln md5sum mv nl od paste pr ptx rm ...

lseek (fileno ..., 0, 1 ) != -1	Description
TRUE	evaluated 8312 times by 39 tests Evaluated by: b2sum base32 base64 cksum comm cp cut date df dircolors du expand fmt fold ginstall join ln md5sum mv nl od paste pr ptx rm ...
FALSE	evaluated 3204 times by 25 tests Evaluated by: base32 base64 cksum cp cut expand fold md5sum mv nl od paste pr rm sha1sum sha224sum sha256sum sha384sum sha512sum shuf sort sum tsort unexpand uniq

3204-79246

&& fflush (fp))

rpl_fflush (fp)	Description
TRUE	evaluated 4 times by 1 test Evaluated by: mktemp
FALSE	evaluated 87554 times by 106 tests Evaluated by: [ b2sum base32 base64 basename cat chcon chgrp chmod chown chroot cksum comm cp csplit cut date dd df dir dircolors dirname du echo env ...

4-87554

saved_errno = errno;

executed 4 times by 1 test: saved_errno = (*__errno_location ()) ;

Executed by:

mktemp

/* fclose() calls close(), but we need to also invoke all hooks that our

overridden close() function invokes. See lib/close.c. */

#if WINDOWS_SOCKETS

/* Call the overridden close(), then the original fclose().

Note about multithread-safety: There is a race condition where some

other thread could open fd between our close and fclose. */

if (close (fd) < 0 && saved_errno == 0)

saved_errno = errno;

fclose_nothrow (fp); /* will fail with errno = EBADF,

if we did not lose a race */

#else /* !WINDOWS_SOCKETS */

/* Call fclose() and invoke all hooks of the overridden close(). */

# if REPLACE_FCHDIR

/* Note about multithread-safety: There is a race condition here as well.

Some other thread could open fd between our calls to fclose and

_gl_unregister_fd. */

result = fclose_nothrow (fp);

if (result == 0)

_gl_unregister_fd (fd);

# else

/* No race condition here. */

100

result = fclose_nothrow (fp);

101

# endif

102

103

#endif /* !WINDOWS_SOCKETS */

104

105

if (saved_errno != 0)

saved_errno != 0	Description
TRUE	evaluated 4 times by 1 test Evaluated by: mktemp
FALSE	evaluated 90758 times by 106 tests Evaluated by: [ b2sum base32 base64 basename cat chcon chgrp chmod chown chroot cksum comm cp csplit cut date dd df dir dircolors dirname du echo env ...