sysdeps/unix/stime.c

   1 /* Copyright (C) 1992, 1996, 1997, 2001 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */
  18
  19 #include <errno.h>
  20 #include <stddef.h>             /* For NULL.  */
  21 #include <sys/time.h>
  22 #include <time.h>
  23
  24 /* Set the system clock to *WHEN.  */
  25
  26 int
  27 stime (when)
  28      const time_t *when;
  29 {
  30   struct timeval tv;
  31
  32   if (when == NULL)
  33     {
  34       __set_errno (EINVAL);
  35       return -1;
  36     }
  37
  38   tv.tv_sec = *when;
  39   tv.tv_usec = 0;
  40   return __settimeofday (&tv, (struct timezone *) 0);
  41 }