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55 lines
1.8 KiB
C
55 lines
1.8 KiB
C
/* futimes -- change access and modification times of open file. Linux version.
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Copyright (C) 2002-2015 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <sysdep.h>
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#include <string.h>
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#include <time.h>
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#include <utime.h>
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#include <sys/time.h>
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#include <_itoa.h>
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#include <fcntl.h>
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/* Change the access time of the file associated with FD to TVP[0] and
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the modification time of FILE to TVP[1].
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Starting with 2.6.22 the Linux kernel has the utimensat syscall which
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can be used to implement futimes. */
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int
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__futimes (int fd, const struct timeval tvp[2])
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{
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/* The utimensat system call expects timespec not timeval. */
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struct timespec ts[2];
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if (tvp != NULL)
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{
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if (tvp[0].tv_usec < 0 || tvp[0].tv_usec >= 1000000
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|| tvp[1].tv_usec < 0 || tvp[1].tv_usec >= 1000000)
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{
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__set_errno (EINVAL);
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return -1;
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}
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TIMEVAL_TO_TIMESPEC (&tvp[0], &ts[0]);
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TIMEVAL_TO_TIMESPEC (&tvp[1], &ts[1]);
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}
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return INLINE_SYSCALL (utimensat, 4, fd, NULL, tvp ? &ts : NULL, 0);
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}
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weak_alias (__futimes, futimes)
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