sysdeps/mach/hurd/settimeofday.c

   1 /* Copyright (C) 1991-2018 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 (const struct timeval *tv, const struct timezone *tz)
  27 {
  28   error_t err;
  29   mach_port_t hostpriv;
  30
  31   if (tz != NULL)
  32     {
  33       errno = ENOSYS;
  34       return -1;
  35     }
  36
  37   err = __get_privileged_ports (&hostpriv, NULL);
  38   if (err)
  39     return __hurd_fail (EPERM);
  40
  41   /* `time_value_t' and `struct timeval' are in fact identical with the
  42      names changed.  */
  43   err = __host_set_time (hostpriv, *(time_value_t *) tv);
  44   __mach_port_deallocate (__mach_task_self (), hostpriv);
  45
  46   if (err)
  47     return __hurd_fail (err);
  48
  49   return 0;
  50 }
  51
  52 weak_alias (__settimeofday, settimeofday)