1/* Copyright (C) 1992-2018 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 <stddef.h> /* For NULL. */
20#include <sys/time.h>
21#include <time.h>
22
23/* Set the system clock to *WHEN. */
24
25int
26stime (const time_t *when)
27{
28 struct timeval tv;
29
30 if (when == NULL)
31 {
32 __set_errno (EINVAL);
33 return -1;
34 }
35
36 tv.tv_sec = *when;
37 tv.tv_usec = 0;
38 return __settimeofday (&tv, (struct timezone *) 0);
39}
40