sysdeps/unix/stime.c

   1 /* Copyright (C) 1992-2017 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, see
  16    <http://www.gnu.org/licenses/>.  */
  17
  18 #include <errno.h>
  19 #include <stddef.h>             /* For NULL.  */
  20 #include <sys/time.h>
  21 #include <time.h>
  22
  23 /* Set the system clock to *WHEN.  */
  24
  25 int
  26 stime (const time_t *when)
  27 {
  28   struct timeval tv;
  29
  30   if (when == NULL)
  31     {
  32       __set_errno (EINVAL);
  33       return -1;
  34     }
  35
  36   tv.tv_sec = *when;
  37   tv.tv_usec = 0;
  38   return __settimeofday (&tv, (struct timezone *) 0);
  39 }