1 /* Copyright (C) 2003, 2004, 2005 Free Software Foundation, Inc.
3 This program is free software; you can redistribute it and/or modify it
4 under the terms of the GNU General Public License as published by the
5 Free Software Foundation; either version 2, or (at your option) any
8 This program is distributed in the hope that it will be useful,
9 but WITHOUT ANY WARRANTY; without even the implied warranty of
10 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 GNU General Public License for more details.
13 You should have received a copy of the GNU General Public License
14 along with this program; if not, write to the Free Software Foundation,
15 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
17 /* Written by Paul Eggert. */
19 /* derived from a function in touch.c */
34 /* Some systems (even some that do have <utime.h>) don't declare this
35 structure anywhere. */
36 #ifndef HAVE_STRUCT_UTIMBUF
44 #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 8) || __STRICT_ANSI__
45 # define __attribute__(x)
48 #ifndef ATTRIBUTE_UNUSED
49 # define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
52 /* Set the access and modification time stamps of FD (a.k.a. FILE) to be
53 TIMESPEC[0] and TIMESPEC[1], respectively.
54 FD must be either negative -- in which case it is ignored --
55 or a file descriptor that is open on FILE.
56 If TIMESPEC is null, set the time stamps to the current time. */
59 futimens (int fd ATTRIBUTE_UNUSED,
60 char const *file, struct timespec const timespec[2])
62 /* There's currently no interface to set file timestamps with
63 nanosecond resolution, so do the best we can, discarding any
64 fractional part of the timestamp. */
65 #if HAVE_FUTIMESAT || HAVE_WORKING_UTIMES
66 struct timeval timeval[2];
67 struct timeval const *t;
70 timeval[0].tv_sec = timespec[0].tv_sec;
71 timeval[0].tv_usec = timespec[0].tv_nsec / 1000;
72 timeval[1].tv_sec = timespec[1].tv_sec;
73 timeval[1].tv_usec = timespec[1].tv_nsec / 1000;
80 return fd < 0 ? futimesat (AT_FDCWD, file, t) : futimesat (fd, NULL, t);
85 if (futimes (fd, t) == 0)
88 /* On GNU/Linux without the futimes syscall and without /proc
89 mounted, glibc futimes fails with errno == ENOENT. Fall back
90 on utimes if we get a weird error number like that. */
101 return utimes (file, t);
106 struct utimbuf utimbuf;
107 struct utimbuf const *t;
110 utimbuf.actime = timespec[0].tv_sec;
111 utimbuf.modtime = timespec[1].tv_sec;
116 return utime (file, t);
121 /* Set the access and modification time stamps of FILE to be
122 TIMESPEC[0] and TIMESPEC[1], respectively. */
124 utimens (char const *file, struct timespec const timespec[2])
126 return futimens (-1, file, timespec);