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glibc  2.9
settimeofday.c
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00001 /* Copyright (C) 1991,92,93,94,95,97,2001 Free Software Foundation, Inc.
00002    This file is part of the GNU C Library.
00003 
00004    The GNU C Library is free software; you can redistribute it and/or
00005    modify it under the terms of the GNU Lesser General Public
00006    License as published by the Free Software Foundation; either
00007    version 2.1 of the License, or (at your option) any later version.
00008 
00009    The GNU C Library is distributed in the hope that it will be useful,
00010    but WITHOUT ANY WARRANTY; without even the implied warranty of
00011    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012    Lesser General Public License for more details.
00013 
00014    You should have received a copy of the GNU Lesser General Public
00015    License along with the GNU C Library; if not, write to the Free
00016    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00017    02111-1307 USA.  */
00018 
00019 #include <errno.h>
00020 #include <sys/time.h>
00021 #include <hurd.h>
00022 #include <hurd/port.h>
00023 
00024 /* Set the current time of day and timezone information.
00025    This call is restricted to the super-user.  */
00026 int
00027 __settimeofday (tv, tz)
00028      const struct timeval *tv;
00029      const struct timezone *tz;
00030 {
00031   error_t err;
00032   mach_port_t hostpriv;
00033 
00034   if (tz != NULL)
00035     {
00036       errno = ENOSYS;
00037       return -1;
00038     }
00039 
00040   err = __get_privileged_ports (&hostpriv, NULL);
00041   if (err)
00042     return __hurd_fail (EPERM);
00043 
00044   /* `time_value_t' and `struct timeval' are in fact identical with the
00045      names changed.  */
00046   err = __host_set_time (hostpriv, *(time_value_t *) tv);
00047   __mach_port_deallocate (__mach_task_self (), hostpriv);
00048 
00049   if (err)
00050     return __hurd_fail (err);
00051 
00052   return 0;
00053 }
00054 
00055 weak_alias (__settimeofday, settimeofday)