1/* Obsolete set system time. Linux version.
2 Copyright (C) 2019-2023 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
18
19#include <errno.h>
20#include <sys/time.h>
21#include <stddef.h>
22#include <sysdep.h>
23
24/* Set the system-wide timezone.
25 This call is restricted to the super-user.
26 This operation is considered obsolete, kernel support may not be
27 available on all architectures. */
28int
29__settimezone (const struct timezone *tz)
30{
31#ifdef __NR_settimeofday
32 return INLINE_SYSCALL_CALL (settimeofday, NULL, tz);
33#else
34 __set_errno (ENOSYS);
35 return -1;
36#endif
37}
38