sysdeps/mach/hurd/settimeofday.c

   1 /* Copyright (C) 1991, 1992, 1993, 1994, 1995 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 Library General Public License as
   6 published by the Free Software Foundation; either version 2 of the
   7 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 Library General Public License for more details.
  13
  14 You should have received a copy of the GNU Library General Public
  15 License along with the GNU C Library; see the file COPYING.LIB.  If
  16 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  17 Cambridge, MA 02139, USA.  */
  18
  19 #include <ansidecl.h>
  20 #include <errno.h>
  21 #include <sys/time.h>
  22 #include <hurd.h>
  23 #include <hurd/port.h>
  24
  25 /* Set the current time of day and timezone information.
  26    This call is restricted to the super-user.  */
  27 int
  28 DEFUN(__settimeofday, (tv, tz),
  29       CONST struct timeval *tv AND CONST struct timezone *tz)
  30 {
  31   error_t err;
  32   mach_port_t hostpriv, devmaster;
  33
  34   if (tz != NULL)
  35     {
  36       errno = ENOSYS;
  37       return -1;
  38     }
  39
  40   if (err = __USEPORT (PROC, __proc_getprivports (port,
  41                                                   &hostpriv, &devmaster)))
  42     return __hurd_fail (err);
  43   __mach_port_deallocate (__mach_task_self (), devmaster);
  44
  45   /* `time_value_t' and `struct timeval' are in fact identical with the
  46      names changed.  */
  47   err = __host_set_time (hostpriv, *(time_value_t *) tv);
  48   __mach_port_deallocate (__mach_task_self (), hostpriv);
  49
  50   if (err)
  51     return __hurd_fail (err);
  52
  53   return 0;
  54 }
  55
  56 weak_alias (__settimeofday, settimeofday)