octave-shane/gnulib-hg: lib/utimens.c annotate

annotate lib/utimens.c @ 9613:c4fa39bf5223

Don't redefine __attribute__ without a need.

author	Bruno Haible <bruno@clisp.org>
date	Sun, 13 Jan 2008 16:51:48 +0100
parents	bbbbbf4cd1c5
children	bbccff5988c3

rev	line source
6734 3e5ad4566013 * utimens.c (futimens): glibc futimesat messes up if /proc Paul Eggert <eggert@cs.ucla.edu> parents: 6440 diff changeset	1 /* Set file access and modification times.
3e5ad4566013 * utimens.c (futimens): glibc futimesat messes up if /proc Paul Eggert <eggert@cs.ucla.edu> parents: 6440 diff changeset	2
9613 c4fa39bf5223 Don't redefine __attribute__ without a need. Bruno Haible <bruno@clisp.org> parents: 9309 diff changeset	3 Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 Free Software
7897 b7a83a69ac23 * MODULES.html.sh (Support for systems lacking POSIX:2001): New Paul Eggert <eggert@cs.ucla.edu> parents: 7713 diff changeset	4 Foundation, Inc.
5147 3249aec7f48c Import from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	5
9309 bbbbbf4cd1c5 Change copyright notice from GPLv2+ to GPLv3+. Bruno Haible <bruno@clisp.org> parents: 8842 diff changeset	6 This program is free software: you can redistribute it and/or modify it
5147 3249aec7f48c Import from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	7 under the terms of the GNU General Public License as published by the
9309 bbbbbf4cd1c5 Change copyright notice from GPLv2+ to GPLv3+. Bruno Haible <bruno@clisp.org> parents: 8842 diff changeset	8 Free Software Foundation; either version 3 of the License, or any
5147 3249aec7f48c Import from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	9 later version.
3249aec7f48c Import from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	10
3249aec7f48c Import from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	11 This program is distributed in the hope that it will be useful,
3249aec7f48c Import from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	12 but WITHOUT ANY WARRANTY; without even the implied warranty of
3249aec7f48c Import from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
3249aec7f48c Import from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	14 GNU General Public License for more details.
3249aec7f48c Import from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	15
3249aec7f48c Import from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	16 You should have received a copy of the GNU General Public License
9309 bbbbbf4cd1c5 Change copyright notice from GPLv2+ to GPLv3+. Bruno Haible <bruno@clisp.org> parents: 8842 diff changeset	17 along with this program. If not, see <http://www.gnu.org/licenses/>. */
5147 3249aec7f48c Import from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	18
3249aec7f48c Import from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	19 /* Written by Paul Eggert. */
3249aec7f48c Import from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	20
3249aec7f48c Import from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	21 /* derived from a function in touch.c */
3249aec7f48c Import from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	22
7302 8a1a9361108c * _fpending.c: Include <config.h> unconditionally, since we no Paul Eggert <eggert@cs.ucla.edu> parents: 6819 diff changeset	23 #include <config.h>
5147 3249aec7f48c Import from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	24
3249aec7f48c Import from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	25 #include "utimens.h"
3249aec7f48c Import from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	26
5589 6ddb405e16b6 (futimens): Account for the fact that futimes Paul Eggert <eggert@cs.ucla.edu> parents: 5485 diff changeset	27 #include <errno.h>
6283 b377d8796118 * lib/utimens.c (futimens): Use futimesat if available. Paul Eggert <eggert@cs.ucla.edu> parents: 5848 diff changeset	28 #include <fcntl.h>
7897 b7a83a69ac23 * MODULES.html.sh (Support for systems lacking POSIX:2001): New Paul Eggert <eggert@cs.ucla.edu> parents: 7713 diff changeset	29 #include <sys/time.h>
6322 716071856296 Sync from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6297 diff changeset	30 #include <unistd.h>
5589 6ddb405e16b6 (futimens): Account for the fact that futimes Paul Eggert <eggert@cs.ucla.edu> parents: 5485 diff changeset	31
5147 3249aec7f48c Import from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	32 #if HAVE_UTIME_H
3249aec7f48c Import from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	33 # include <utime.h>
3249aec7f48c Import from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	34 #endif
3249aec7f48c Import from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	35
3249aec7f48c Import from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	36 /* Some systems (even some that do have <utime.h>) don't declare this
3249aec7f48c Import from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	37 structure anywhere. */
3249aec7f48c Import from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	38 #ifndef HAVE_STRUCT_UTIMBUF
3249aec7f48c Import from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	39 struct utimbuf
3249aec7f48c Import from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	40 {
3249aec7f48c Import from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	41 long actime;
3249aec7f48c Import from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	42 long modtime;
3249aec7f48c Import from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	43 };
3249aec7f48c Import from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	44 #endif
3249aec7f48c Import from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	45
6297 10379892281e * utimens.c (ENOSYS): Define if not already defined. Paul Eggert <eggert@cs.ucla.edu> parents: 6283 diff changeset	46 /* Some systems don't have ENOSYS. */
10379892281e * utimens.c (ENOSYS): Define if not already defined. Paul Eggert <eggert@cs.ucla.edu> parents: 6283 diff changeset	47 #ifndef ENOSYS
10379892281e * utimens.c (ENOSYS): Define if not already defined. Paul Eggert <eggert@cs.ucla.edu> parents: 6283 diff changeset	48 # ifdef ENOTSUP
10379892281e * utimens.c (ENOSYS): Define if not already defined. Paul Eggert <eggert@cs.ucla.edu> parents: 6283 diff changeset	49 # define ENOSYS ENOTSUP
10379892281e * utimens.c (ENOSYS): Define if not already defined. Paul Eggert <eggert@cs.ucla.edu> parents: 6283 diff changeset	50 # else
10379892281e * utimens.c (ENOSYS): Define if not already defined. Paul Eggert <eggert@cs.ucla.edu> parents: 6283 diff changeset	51 /* Some systems don't have ENOTSUP either. */
10379892281e * utimens.c (ENOSYS): Define if not already defined. Paul Eggert <eggert@cs.ucla.edu> parents: 6283 diff changeset	52 # define ENOSYS EINVAL
10379892281e * utimens.c (ENOSYS): Define if not already defined. Paul Eggert <eggert@cs.ucla.edu> parents: 6283 diff changeset	53 # endif
10379892281e * utimens.c (ENOSYS): Define if not already defined. Paul Eggert <eggert@cs.ucla.edu> parents: 6283 diff changeset	54 #endif
10379892281e * utimens.c (ENOSYS): Define if not already defined. Paul Eggert <eggert@cs.ucla.edu> parents: 6283 diff changeset	55
6819 3449832bdc37 * getdate.y (__attribute__): Don't define if already defined. Paul Eggert <eggert@cs.ucla.edu> parents: 6734 diff changeset	56 #ifndef __attribute__
9613 c4fa39bf5223 Don't redefine __attribute__ without a need. Bruno Haible <bruno@clisp.org> parents: 9309 diff changeset	57 # if __GNUC__ < 2 \|\| (__GNUC__ == 2 && __GNUC_MINOR__ < 8)
6819 3449832bdc37 * getdate.y (__attribute__): Don't define if already defined. Paul Eggert <eggert@cs.ucla.edu> parents: 6734 diff changeset	58 # define __attribute__(x)
3449832bdc37 * getdate.y (__attribute__): Don't define if already defined. Paul Eggert <eggert@cs.ucla.edu> parents: 6734 diff changeset	59 # endif
5485 863556283cee (__attribute__, ATTRIBUTE_UNUSED): New macros. Paul Eggert <eggert@cs.ucla.edu> parents: 5147 diff changeset	60 #endif
863556283cee (__attribute__, ATTRIBUTE_UNUSED): New macros. Paul Eggert <eggert@cs.ucla.edu> parents: 5147 diff changeset	61
863556283cee (__attribute__, ATTRIBUTE_UNUSED): New macros. Paul Eggert <eggert@cs.ucla.edu> parents: 5147 diff changeset	62 #ifndef ATTRIBUTE_UNUSED
863556283cee (__attribute__, ATTRIBUTE_UNUSED): New macros. Paul Eggert <eggert@cs.ucla.edu> parents: 5147 diff changeset	63 # define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
863556283cee (__attribute__, ATTRIBUTE_UNUSED): New macros. Paul Eggert <eggert@cs.ucla.edu> parents: 5147 diff changeset	64 #endif
863556283cee (__attribute__, ATTRIBUTE_UNUSED): New macros. Paul Eggert <eggert@cs.ucla.edu> parents: 5147 diff changeset	65
863556283cee (__attribute__, ATTRIBUTE_UNUSED): New macros. Paul Eggert <eggert@cs.ucla.edu> parents: 5147 diff changeset	66 /* Set the access and modification time stamps of FD (a.k.a. FILE) to be
863556283cee (__attribute__, ATTRIBUTE_UNUSED): New macros. Paul Eggert <eggert@cs.ucla.edu> parents: 5147 diff changeset	67 TIMESPEC[0] and TIMESPEC[1], respectively.
863556283cee (__attribute__, ATTRIBUTE_UNUSED): New macros. Paul Eggert <eggert@cs.ucla.edu> parents: 5147 diff changeset	68 FD must be either negative -- in which case it is ignored --
863556283cee (__attribute__, ATTRIBUTE_UNUSED): New macros. Paul Eggert <eggert@cs.ucla.edu> parents: 5147 diff changeset	69 or a file descriptor that is open on FILE.
6297 10379892281e * utimens.c (ENOSYS): Define if not already defined. Paul Eggert <eggert@cs.ucla.edu> parents: 6283 diff changeset	70 If FD is nonnegative, then FILE can be NULL, which means
10379892281e * utimens.c (ENOSYS): Define if not already defined. Paul Eggert <eggert@cs.ucla.edu> parents: 6283 diff changeset	71 use just futimes (or equivalent) instead of utimes (or equivalent),
10379892281e * utimens.c (ENOSYS): Define if not already defined. Paul Eggert <eggert@cs.ucla.edu> parents: 6283 diff changeset	72 and fail if on an old system without futimes (or equivalent).
10379892281e * utimens.c (ENOSYS): Define if not already defined. Paul Eggert <eggert@cs.ucla.edu> parents: 6283 diff changeset	73 If TIMESPEC is null, set the time stamps to the current time.
10379892281e * utimens.c (ENOSYS): Define if not already defined. Paul Eggert <eggert@cs.ucla.edu> parents: 6283 diff changeset	74 Return 0 on success, -1 (setting errno) on failure. */
5147 3249aec7f48c Import from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	75
3249aec7f48c Import from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	76 int
8842 7605663b153e * lib/utimens.c (gl_futimens): Rename from futimens, Jim Meyering <jim@meyering.net> parents: 7897 diff changeset	77 gl_futimens (int fd ATTRIBUTE_UNUSED,
7605663b153e * lib/utimens.c (gl_futimens): Rename from futimens, Jim Meyering <jim@meyering.net> parents: 7897 diff changeset	78 char const *file, struct timespec const timespec[2])
5147 3249aec7f48c Import from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	79 {
7712 aead3397193a * lib/utimens.c (futimens) [HAVE_BUGGY_NFS_TIME_STAMPS]: Add a Paul Eggert <eggert@cs.ucla.edu> parents: 7302 diff changeset	80 /* Some Linux-based NFS clients are buggy, and mishandle time stamps
aead3397193a * lib/utimens.c (futimens) [HAVE_BUGGY_NFS_TIME_STAMPS]: Add a Paul Eggert <eggert@cs.ucla.edu> parents: 7302 diff changeset	81 of files in NFS file systems in some cases. We have no
aead3397193a * lib/utimens.c (futimens) [HAVE_BUGGY_NFS_TIME_STAMPS]: Add a Paul Eggert <eggert@cs.ucla.edu> parents: 7302 diff changeset	82 configure-time test for this, but please see
aead3397193a * lib/utimens.c (futimens) [HAVE_BUGGY_NFS_TIME_STAMPS]: Add a Paul Eggert <eggert@cs.ucla.edu> parents: 7302 diff changeset	83 <http://bugs.gentoo.org/show_bug.cgi?id=132673> for references to
aead3397193a * lib/utimens.c (futimens) [HAVE_BUGGY_NFS_TIME_STAMPS]: Add a Paul Eggert <eggert@cs.ucla.edu> parents: 7302 diff changeset	84 some of the problems with Linux 2.6.16. If this affects you,
aead3397193a * lib/utimens.c (futimens) [HAVE_BUGGY_NFS_TIME_STAMPS]: Add a Paul Eggert <eggert@cs.ucla.edu> parents: 7302 diff changeset	85 compile with -DHAVE_BUGGY_NFS_TIME_STAMPS; this is reported to
aead3397193a * lib/utimens.c (futimens) [HAVE_BUGGY_NFS_TIME_STAMPS]: Add a Paul Eggert <eggert@cs.ucla.edu> parents: 7302 diff changeset	86 help in some cases, albeit at a cost in performance. But you
aead3397193a * lib/utimens.c (futimens) [HAVE_BUGGY_NFS_TIME_STAMPS]: Add a Paul Eggert <eggert@cs.ucla.edu> parents: 7302 diff changeset	87 really should upgrade your kernel to a fixed version, since the
aead3397193a * lib/utimens.c (futimens) [HAVE_BUGGY_NFS_TIME_STAMPS]: Add a Paul Eggert <eggert@cs.ucla.edu> parents: 7302 diff changeset	88 problem affects many applications. */
aead3397193a * lib/utimens.c (futimens) [HAVE_BUGGY_NFS_TIME_STAMPS]: Add a Paul Eggert <eggert@cs.ucla.edu> parents: 7302 diff changeset	89
aead3397193a * lib/utimens.c (futimens) [HAVE_BUGGY_NFS_TIME_STAMPS]: Add a Paul Eggert <eggert@cs.ucla.edu> parents: 7302 diff changeset	90 #if HAVE_BUGGY_NFS_TIME_STAMPS
7713 064005e1c3c3 Prefer fd < 0 to ! (0 <= fd). Paul Eggert <eggert@cs.ucla.edu> parents: 7712 diff changeset	91 if (fd < 0)
064005e1c3c3 Prefer fd < 0 to ! (0 <= fd). Paul Eggert <eggert@cs.ucla.edu> parents: 7712 diff changeset	92 sync ();
064005e1c3c3 Prefer fd < 0 to ! (0 <= fd). Paul Eggert <eggert@cs.ucla.edu> parents: 7712 diff changeset	93 else
7712 aead3397193a * lib/utimens.c (futimens) [HAVE_BUGGY_NFS_TIME_STAMPS]: Add a Paul Eggert <eggert@cs.ucla.edu> parents: 7302 diff changeset	94 fsync (fd);
aead3397193a * lib/utimens.c (futimens) [HAVE_BUGGY_NFS_TIME_STAMPS]: Add a Paul Eggert <eggert@cs.ucla.edu> parents: 7302 diff changeset	95 #endif
aead3397193a * lib/utimens.c (futimens) [HAVE_BUGGY_NFS_TIME_STAMPS]: Add a Paul Eggert <eggert@cs.ucla.edu> parents: 7302 diff changeset	96
5147 3249aec7f48c Import from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	97 /* There's currently no interface to set file timestamps with
3249aec7f48c Import from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	98 nanosecond resolution, so do the best we can, discarding any
3249aec7f48c Import from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	99 fractional part of the timestamp. */
6283 b377d8796118 * lib/utimens.c (futimens): Use futimesat if available. Paul Eggert <eggert@cs.ucla.edu> parents: 5848 diff changeset	100 #if HAVE_FUTIMESAT \|\| HAVE_WORKING_UTIMES
5147 3249aec7f48c Import from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	101 struct timeval timeval[2];
5485 863556283cee (__attribute__, ATTRIBUTE_UNUSED): New macros. Paul Eggert <eggert@cs.ucla.edu> parents: 5147 diff changeset	102 struct timeval const *t;
863556283cee (__attribute__, ATTRIBUTE_UNUSED): New macros. Paul Eggert <eggert@cs.ucla.edu> parents: 5147 diff changeset	103 if (timespec)
863556283cee (__attribute__, ATTRIBUTE_UNUSED): New macros. Paul Eggert <eggert@cs.ucla.edu> parents: 5147 diff changeset	104 {
863556283cee (__attribute__, ATTRIBUTE_UNUSED): New macros. Paul Eggert <eggert@cs.ucla.edu> parents: 5147 diff changeset	105 timeval[0].tv_sec = timespec[0].tv_sec;
863556283cee (__attribute__, ATTRIBUTE_UNUSED): New macros. Paul Eggert <eggert@cs.ucla.edu> parents: 5147 diff changeset	106 timeval[0].tv_usec = timespec[0].tv_nsec / 1000;
863556283cee (__attribute__, ATTRIBUTE_UNUSED): New macros. Paul Eggert <eggert@cs.ucla.edu> parents: 5147 diff changeset	107 timeval[1].tv_sec = timespec[1].tv_sec;
863556283cee (__attribute__, ATTRIBUTE_UNUSED): New macros. Paul Eggert <eggert@cs.ucla.edu> parents: 5147 diff changeset	108 timeval[1].tv_usec = timespec[1].tv_nsec / 1000;
863556283cee (__attribute__, ATTRIBUTE_UNUSED): New macros. Paul Eggert <eggert@cs.ucla.edu> parents: 5147 diff changeset	109 t = timeval;
863556283cee (__attribute__, ATTRIBUTE_UNUSED): New macros. Paul Eggert <eggert@cs.ucla.edu> parents: 5147 diff changeset	110 }
863556283cee (__attribute__, ATTRIBUTE_UNUSED): New macros. Paul Eggert <eggert@cs.ucla.edu> parents: 5147 diff changeset	111 else
863556283cee (__attribute__, ATTRIBUTE_UNUSED): New macros. Paul Eggert <eggert@cs.ucla.edu> parents: 5147 diff changeset	112 t = NULL;
6283 b377d8796118 * lib/utimens.c (futimens): Use futimesat if available. Paul Eggert <eggert@cs.ucla.edu> parents: 5848 diff changeset	113
6734 3e5ad4566013 * utimens.c (futimens): glibc futimesat messes up if /proc Paul Eggert <eggert@cs.ucla.edu> parents: 6440 diff changeset	114
3e5ad4566013 * utimens.c (futimens): glibc futimesat messes up if /proc Paul Eggert <eggert@cs.ucla.edu> parents: 6440 diff changeset	115 if (fd < 0)
3e5ad4566013 * utimens.c (futimens): glibc futimesat messes up if /proc Paul Eggert <eggert@cs.ucla.edu> parents: 6440 diff changeset	116 {
6283 b377d8796118 * lib/utimens.c (futimens): Use futimesat if available. Paul Eggert <eggert@cs.ucla.edu> parents: 5848 diff changeset	117 # if HAVE_FUTIMESAT
6734 3e5ad4566013 * utimens.c (futimens): glibc futimesat messes up if /proc Paul Eggert <eggert@cs.ucla.edu> parents: 6440 diff changeset	118 return futimesat (AT_FDCWD, file, t);
3e5ad4566013 * utimens.c (futimens): glibc futimesat messes up if /proc Paul Eggert <eggert@cs.ucla.edu> parents: 6440 diff changeset	119 # endif
3e5ad4566013 * utimens.c (futimens): glibc futimesat messes up if /proc Paul Eggert <eggert@cs.ucla.edu> parents: 6440 diff changeset	120 }
3e5ad4566013 * utimens.c (futimens): glibc futimesat messes up if /proc Paul Eggert <eggert@cs.ucla.edu> parents: 6440 diff changeset	121 else
3e5ad4566013 * utimens.c (futimens): glibc futimesat messes up if /proc Paul Eggert <eggert@cs.ucla.edu> parents: 6440 diff changeset	122 {
3e5ad4566013 * utimens.c (futimens): glibc futimesat messes up if /proc Paul Eggert <eggert@cs.ucla.edu> parents: 6440 diff changeset	123 /* If futimesat or futimes fails here, don't try to speed things
3e5ad4566013 * utimens.c (futimens): glibc futimesat messes up if /proc Paul Eggert <eggert@cs.ucla.edu> parents: 6440 diff changeset	124 up by returning right away. glibc can incorrectly fail with
3e5ad4566013 * utimens.c (futimens): glibc futimesat messes up if /proc Paul Eggert <eggert@cs.ucla.edu> parents: 6440 diff changeset	125 errno == ENOENT if /proc isn't mounted. Also, Mandrake 10.0
3e5ad4566013 * utimens.c (futimens): glibc futimesat messes up if /proc Paul Eggert <eggert@cs.ucla.edu> parents: 6440 diff changeset	126 in high security mode doesn't allow ordinary users to read
3e5ad4566013 * utimens.c (futimens): glibc futimesat messes up if /proc Paul Eggert <eggert@cs.ucla.edu> parents: 6440 diff changeset	127 /proc/self, so glibc incorrectly fails with errno == EACCES.
3e5ad4566013 * utimens.c (futimens): glibc futimesat messes up if /proc Paul Eggert <eggert@cs.ucla.edu> parents: 6440 diff changeset	128 If errno == EIO, EPERM, or EROFS, it's probably safe to fail
3e5ad4566013 * utimens.c (futimens): glibc futimesat messes up if /proc Paul Eggert <eggert@cs.ucla.edu> parents: 6440 diff changeset	129 right away, but these cases are rare enough that they're not
3e5ad4566013 * utimens.c (futimens): glibc futimesat messes up if /proc Paul Eggert <eggert@cs.ucla.edu> parents: 6440 diff changeset	130 worth optimizing, and who knows what other messed-up systems
3e5ad4566013 * utimens.c (futimens): glibc futimesat messes up if /proc Paul Eggert <eggert@cs.ucla.edu> parents: 6440 diff changeset	131 are out there? So play it safe and fall back on the code
3e5ad4566013 * utimens.c (futimens): glibc futimesat messes up if /proc Paul Eggert <eggert@cs.ucla.edu> parents: 6440 diff changeset	132 below. */
3e5ad4566013 * utimens.c (futimens): glibc futimesat messes up if /proc Paul Eggert <eggert@cs.ucla.edu> parents: 6440 diff changeset	133 # if HAVE_FUTIMESAT
3e5ad4566013 * utimens.c (futimens): glibc futimesat messes up if /proc Paul Eggert <eggert@cs.ucla.edu> parents: 6440 diff changeset	134 if (futimesat (fd, NULL, t) == 0)
3e5ad4566013 * utimens.c (futimens): glibc futimesat messes up if /proc Paul Eggert <eggert@cs.ucla.edu> parents: 6440 diff changeset	135 return 0;
6297 10379892281e * utimens.c (ENOSYS): Define if not already defined. Paul Eggert <eggert@cs.ucla.edu> parents: 6283 diff changeset	136 # elif HAVE_FUTIMES
5589 6ddb405e16b6 (futimens): Account for the fact that futimes Paul Eggert <eggert@cs.ucla.edu> parents: 5485 diff changeset	137 if (futimes (fd, t) == 0)
6ddb405e16b6 (futimens): Account for the fact that futimes Paul Eggert <eggert@cs.ucla.edu> parents: 5485 diff changeset	138 return 0;
6734 3e5ad4566013 * utimens.c (futimens): glibc futimesat messes up if /proc Paul Eggert <eggert@cs.ucla.edu> parents: 6440 diff changeset	139 # endif
5589 6ddb405e16b6 (futimens): Account for the fact that futimes Paul Eggert <eggert@cs.ucla.edu> parents: 5485 diff changeset	140 }
6297 10379892281e * utimens.c (ENOSYS): Define if not already defined. Paul Eggert <eggert@cs.ucla.edu> parents: 6283 diff changeset	141 #endif
5485 863556283cee (__attribute__, ATTRIBUTE_UNUSED): New macros. Paul Eggert <eggert@cs.ucla.edu> parents: 5147 diff changeset	142
6297 10379892281e * utimens.c (ENOSYS): Define if not already defined. Paul Eggert <eggert@cs.ucla.edu> parents: 6283 diff changeset	143 if (!file)
10379892281e * utimens.c (ENOSYS): Define if not already defined. Paul Eggert <eggert@cs.ucla.edu> parents: 6283 diff changeset	144 {
6734 3e5ad4566013 * utimens.c (futimens): glibc futimesat messes up if /proc Paul Eggert <eggert@cs.ucla.edu> parents: 6440 diff changeset	145 #if ! (HAVE_FUTIMESAT \|\| (HAVE_WORKING_UTIMES && HAVE_FUTIMES))
6297 10379892281e * utimens.c (ENOSYS): Define if not already defined. Paul Eggert <eggert@cs.ucla.edu> parents: 6283 diff changeset	146 errno = ENOSYS;
6734 3e5ad4566013 * utimens.c (futimens): glibc futimesat messes up if /proc Paul Eggert <eggert@cs.ucla.edu> parents: 6440 diff changeset	147 #endif
6322 716071856296 Sync from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6297 diff changeset	148
716071856296 Sync from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6297 diff changeset	149 /* Prefer EBADF to ENOSYS if both error numbers apply. */
716071856296 Sync from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6297 diff changeset	150 if (errno == ENOSYS)
716071856296 Sync from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6297 diff changeset	151 {
716071856296 Sync from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6297 diff changeset	152 int fd2 = dup (fd);
716071856296 Sync from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6297 diff changeset	153 int dup_errno = errno;
716071856296 Sync from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6297 diff changeset	154 if (0 <= fd2)
716071856296 Sync from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6297 diff changeset	155 close (fd2);
716071856296 Sync from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6297 diff changeset	156 errno = (fd2 < 0 && dup_errno == EBADF ? EBADF : ENOSYS);
716071856296 Sync from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6297 diff changeset	157 }
716071856296 Sync from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6297 diff changeset	158
6297 10379892281e * utimens.c (ENOSYS): Define if not already defined. Paul Eggert <eggert@cs.ucla.edu> parents: 6283 diff changeset	159 return -1;
10379892281e * utimens.c (ENOSYS): Define if not already defined. Paul Eggert <eggert@cs.ucla.edu> parents: 6283 diff changeset	160 }
5485 863556283cee (__attribute__, ATTRIBUTE_UNUSED): New macros. Paul Eggert <eggert@cs.ucla.edu> parents: 5147 diff changeset	161
6734 3e5ad4566013 * utimens.c (futimens): glibc futimesat messes up if /proc Paul Eggert <eggert@cs.ucla.edu> parents: 6440 diff changeset	162 #if HAVE_WORKING_UTIMES
6297 10379892281e * utimens.c (ENOSYS): Define if not already defined. Paul Eggert <eggert@cs.ucla.edu> parents: 6283 diff changeset	163 return utimes (file, t);
6734 3e5ad4566013 * utimens.c (futimens): glibc futimesat messes up if /proc Paul Eggert <eggert@cs.ucla.edu> parents: 6440 diff changeset	164 #else
6297 10379892281e * utimens.c (ENOSYS): Define if not already defined. Paul Eggert <eggert@cs.ucla.edu> parents: 6283 diff changeset	165 {
10379892281e * utimens.c (ENOSYS): Define if not already defined. Paul Eggert <eggert@cs.ucla.edu> parents: 6283 diff changeset	166 struct utimbuf utimbuf;
10379892281e * utimens.c (ENOSYS): Define if not already defined. Paul Eggert <eggert@cs.ucla.edu> parents: 6283 diff changeset	167 struct utimbuf const *ut;
10379892281e * utimens.c (ENOSYS): Define if not already defined. Paul Eggert <eggert@cs.ucla.edu> parents: 6283 diff changeset	168 if (timespec)
10379892281e * utimens.c (ENOSYS): Define if not already defined. Paul Eggert <eggert@cs.ucla.edu> parents: 6283 diff changeset	169 {
10379892281e * utimens.c (ENOSYS): Define if not already defined. Paul Eggert <eggert@cs.ucla.edu> parents: 6283 diff changeset	170 utimbuf.actime = timespec[0].tv_sec;
10379892281e * utimens.c (ENOSYS): Define if not already defined. Paul Eggert <eggert@cs.ucla.edu> parents: 6283 diff changeset	171 utimbuf.modtime = timespec[1].tv_sec;
10379892281e * utimens.c (ENOSYS): Define if not already defined. Paul Eggert <eggert@cs.ucla.edu> parents: 6283 diff changeset	172 ut = &utimbuf;
10379892281e * utimens.c (ENOSYS): Define if not already defined. Paul Eggert <eggert@cs.ucla.edu> parents: 6283 diff changeset	173 }
10379892281e * utimens.c (ENOSYS): Define if not already defined. Paul Eggert <eggert@cs.ucla.edu> parents: 6283 diff changeset	174 else
10379892281e * utimens.c (ENOSYS): Define if not already defined. Paul Eggert <eggert@cs.ucla.edu> parents: 6283 diff changeset	175 ut = NULL;
10379892281e * utimens.c (ENOSYS): Define if not already defined. Paul Eggert <eggert@cs.ucla.edu> parents: 6283 diff changeset	176
10379892281e * utimens.c (ENOSYS): Define if not already defined. Paul Eggert <eggert@cs.ucla.edu> parents: 6283 diff changeset	177 return utime (file, ut);
10379892281e * utimens.c (ENOSYS): Define if not already defined. Paul Eggert <eggert@cs.ucla.edu> parents: 6283 diff changeset	178 }
5147 3249aec7f48c Import from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	179 #endif
3249aec7f48c Import from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	180 }
5485 863556283cee (__attribute__, ATTRIBUTE_UNUSED): New macros. Paul Eggert <eggert@cs.ucla.edu> parents: 5147 diff changeset	181
863556283cee (__attribute__, ATTRIBUTE_UNUSED): New macros. Paul Eggert <eggert@cs.ucla.edu> parents: 5147 diff changeset	182 /* Set the access and modification time stamps of FILE to be
863556283cee (__attribute__, ATTRIBUTE_UNUSED): New macros. Paul Eggert <eggert@cs.ucla.edu> parents: 5147 diff changeset	183 TIMESPEC[0] and TIMESPEC[1], respectively. */
863556283cee (__attribute__, ATTRIBUTE_UNUSED): New macros. Paul Eggert <eggert@cs.ucla.edu> parents: 5147 diff changeset	184 int
863556283cee (__attribute__, ATTRIBUTE_UNUSED): New macros. Paul Eggert <eggert@cs.ucla.edu> parents: 5147 diff changeset	185 utimens (char const *file, struct timespec const timespec[2])
863556283cee (__attribute__, ATTRIBUTE_UNUSED): New macros. Paul Eggert <eggert@cs.ucla.edu> parents: 5147 diff changeset	186 {
8842 7605663b153e * lib/utimens.c (gl_futimens): Rename from futimens, Jim Meyering <jim@meyering.net> parents: 7897 diff changeset	187 return gl_futimens (-1, file, timespec);
5485 863556283cee (__attribute__, ATTRIBUTE_UNUSED): New macros. Paul Eggert <eggert@cs.ucla.edu> parents: 5147 diff changeset	188 }

Mercurial > hg > octave-shane > gnulib-hg

annotate lib/utimens.c @ 9613:c4fa39bf5223