1/* clock_settime with error checking.
2 Copyright (C) 2021-2022 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 <https://www.gnu.org/licenses/>. */
18
19#include <stdlib.h>
20#include <support/check.h>
21#include <support/xtime.h>
22
23void
24xclock_settime (clockid_t clockid,
25 const struct timespec *ts)
26{
27 if (getenv (SETTIME_ENV_NAME) == NULL)
28 FAIL_UNSUPPORTED ("clock_settime is executed only when "\
29 SETTIME_ENV_NAME" is set\n");
30
31 int ret = clock_settime (clock_id: clockid, tp: ts);
32 if (ret < 0)
33 FAIL_EXIT1 ("clock_settime (%d): %m", clockid);
34}
35

source code of glibc/support/xclock_settime.c