glibc/sysdeps/unix/sysv/settimeofday.c
1995-02-18 01:27:10 +00:00

48 lines
1.4 KiB
C

/* Copyright (C) 1992, 1995 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#include <ansidecl.h>
#include <errno.h>
#include <sys/time.h>
/* Set the current time of day and timezone information.
This call is restricted to the super-user. */
int
DEFUN(__settimeofday, (tv, tz),
CONST struct timeval *tv AND CONST struct timezone *tz)
{
time_t when;
if (tv == NULL)
{
errno = EINVAL;
return -1;
}
if (tz != NULL || tv->tv_usec % 1000000 != 0)
{
errno = ENOSYS;
return -1;
}
when = tv->tv_sec + (tv->tv_usec / 1000000);
return stime (&when);
}
weak_alias (__settimeofday, settimeofday)