sysdeps/mach/hurd/settimeofday.c

   1 /* Copyright (C) 1991-2014 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 <sys/time.h>
  20 #include <hurd.h>
  21 #include <hurd/port.h>
  22
  23 /* Set the current time of day and timezone information.
  24    This call is restricted to the super-user.  */
  25 int
  26 __settimeofday (tv, tz)
  27      const struct timeval *tv;
  28      const struct timezone *tz;
  29 {
  30   error_t err;
  31   mach_port_t hostpriv;
  32
  33   if (tz != NULL)
  34     {
  35       errno = ENOSYS;
  36       return -1;
  37     }
  38
  39   err = __get_privileged_ports (&hostpriv, NULL);
  40   if (err)
  41     return __hurd_fail (EPERM);
  42
  43   /* `time_value_t' and `struct timeval' are in fact identical with the
  44      names changed.  */
  45   err = __host_set_time (hostpriv, *(time_value_t *) tv);
  46   __mach_port_deallocate (__mach_task_self (), hostpriv);
  47
  48   if (err)
  49     return __hurd_fail (err);
  50
  51   return 0;
  52 }
  53
  54 weak_alias (__settimeofday, settimeofday)