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Diffstat (limited to 'contrib/cpio/lib/utimens.c')
| -rw-r--r-- | contrib/cpio/lib/utimens.c | 189 |
1 files changed, 0 insertions, 189 deletions
diff --git a/contrib/cpio/lib/utimens.c b/contrib/cpio/lib/utimens.c deleted file mode 100644 index 7e3175a49516..000000000000 --- a/contrib/cpio/lib/utimens.c +++ /dev/null @@ -1,189 +0,0 @@ -/* Set file access and modification times. - - Copyright (C) 2003, 2004, 2005, 2006, 2007 Free Software - Foundation, Inc. - - 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 2, 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, write to the Free Software Foundation, - Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ - -/* Written by Paul Eggert. */ - -/* derived from a function in touch.c */ - -#include <config.h> - -#include "utimens.h" - -#include <errno.h> -#include <fcntl.h> -#include <sys/time.h> -#include <unistd.h> - -#if HAVE_UTIME_H -# include <utime.h> -#endif - -/* Some systems (even some that do have <utime.h>) don't declare this - structure anywhere. */ -#ifndef HAVE_STRUCT_UTIMBUF -struct utimbuf -{ - long actime; - long modtime; -}; -#endif - -/* Some systems don't have ENOSYS. */ -#ifndef ENOSYS -# ifdef ENOTSUP -# define ENOSYS ENOTSUP -# else -/* Some systems don't have ENOTSUP either. */ -# define ENOSYS EINVAL -# endif -#endif - -#ifndef __attribute__ -# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 8) || __STRICT_ANSI__ -# define __attribute__(x) -# endif -#endif - -#ifndef ATTRIBUTE_UNUSED -# define ATTRIBUTE_UNUSED __attribute__ ((__unused__)) -#endif - -/* Set the access and modification time stamps of FD (a.k.a. FILE) to be - TIMESPEC[0] and TIMESPEC[1], respectively. - FD must be either negative -- in which case it is ignored -- - or a file descriptor that is open on FILE. - If FD is nonnegative, then FILE can be NULL, which means - use just futimes (or equivalent) instead of utimes (or equivalent), - and fail if on an old system without futimes (or equivalent). - If TIMESPEC is null, set the time stamps to the current time. - Return 0 on success, -1 (setting errno) on failure. */ - -int -gl_futimens (int fd ATTRIBUTE_UNUSED, - char const *file, struct timespec const timespec[2]) -{ - /* Some Linux-based NFS clients are buggy, and mishandle time stamps - of files in NFS file systems in some cases. We have no - configure-time test for this, but please see - <http://bugs.gentoo.org/show_bug.cgi?id=132673> for references to - some of the problems with Linux 2.6.16. If this affects you, - compile with -DHAVE_BUGGY_NFS_TIME_STAMPS; this is reported to - help in some cases, albeit at a cost in performance. But you - really should upgrade your kernel to a fixed version, since the - problem affects many applications. */ - -#if HAVE_BUGGY_NFS_TIME_STAMPS - if (fd < 0) - sync (); - else - fsync (fd); -#endif - - /* There's currently no interface to set file timestamps with - nanosecond resolution, so do the best we can, discarding any - fractional part of the timestamp. */ -#if HAVE_FUTIMESAT || HAVE_WORKING_UTIMES - struct timeval timeval[2]; - struct timeval const *t; - if (timespec) - { - timeval[0].tv_sec = timespec[0].tv_sec; - timeval[0].tv_usec = timespec[0].tv_nsec / 1000; - timeval[1].tv_sec = timespec[1].tv_sec; - timeval[1].tv_usec = timespec[1].tv_nsec / 1000; - t = timeval; - } - else - t = NULL; - - - if (fd < 0) - { -# if HAVE_FUTIMESAT - return futimesat (AT_FDCWD, file, t); -# endif - } - else - { - /* If futimesat or futimes fails here, don't try to speed things - up by returning right away. glibc can incorrectly fail with - errno == ENOENT if /proc isn't mounted. Also, Mandrake 10.0 - in high security mode doesn't allow ordinary users to read - /proc/self, so glibc incorrectly fails with errno == EACCES. - If errno == EIO, EPERM, or EROFS, it's probably safe to fail - right away, but these cases are rare enough that they're not - worth optimizing, and who knows what other messed-up systems - are out there? So play it safe and fall back on the code - below. */ -# if HAVE_FUTIMESAT - if (futimesat (fd, NULL, t) == 0) - return 0; -# elif HAVE_FUTIMES - if (futimes (fd, t) == 0) - return 0; -# endif - } -#endif - - if (!file) - { -#if ! (HAVE_FUTIMESAT || (HAVE_WORKING_UTIMES && HAVE_FUTIMES)) - errno = ENOSYS; -#endif - - /* Prefer EBADF to ENOSYS if both error numbers apply. */ - if (errno == ENOSYS) - { - int fd2 = dup (fd); - int dup_errno = errno; - if (0 <= fd2) - close (fd2); - errno = (fd2 < 0 && dup_errno == EBADF ? EBADF : ENOSYS); - } - - return -1; - } - -#if HAVE_WORKING_UTIMES - return utimes (file, t); -#else - { - struct utimbuf utimbuf; - struct utimbuf const *ut; - if (timespec) - { - utimbuf.actime = timespec[0].tv_sec; - utimbuf.modtime = timespec[1].tv_sec; - ut = &utimbuf; - } - else - ut = NULL; - - return utime (file, ut); - } -#endif -} - -/* Set the access and modification time stamps of FILE to be - TIMESPEC[0] and TIMESPEC[1], respectively. */ -int -utimens (char const *file, struct timespec const timespec[2]) -{ - return gl_futimens (-1, file, timespec); -} |