glibc/sysdeps/posix/utimes.c

/* utimes -- Change access and modification times of file.  Posix version.
   Copyright (C) 1995-2020 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library 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
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <https://www.gnu.org/licenses/>.  */

#include <utime.h>
#include <sys/time.h>
#include <errno.h>
#include <stddef.h>

/* Change the access time of FILE to TVP[0] and
   the modification time of FILE to TVP[1].  */
int
__utimes (const char *file, const struct timeval tvp[2])
{
  struct utimbuf buf, *times;

  if (tvp)
    {
      times = &buf;
      buf.actime = tvp[0].tv_sec + tvp[0].tv_usec / 1000000;
      buf.modtime = tvp[1].tv_sec + tvp[1].tv_usec / 1000000;
    }
  else
    times = NULL;

  return utime (file, times);
}

weak_alias (__utimes, utimes)