1/* Test for clock_settime
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 <time.h>
20#include <support/check.h>
21#include <support/xtime.h>
22
23#define TIMESPEC_SEC_Y2038_OV 0x7FFFFFFF
24#define FUTURE_TIME (TIMESPEC_SEC_Y2038_OV - 10)
25
26static int
27do_test (void)
28{
29 const struct timespec tv = { FUTURE_TIME, 0};
30 struct timespec tv_future, tv_now;
31
32 tv_now = xclock_now(CLOCK_REALTIME);
33 xclock_settime(CLOCK_REALTIME, ts: &tv);
34 tv_future = xclock_now(CLOCK_REALTIME);
35
36 /* Restore old time value on target machine. */
37 xclock_settime(CLOCK_REALTIME, ts: (const struct timespec*) &tv_now);
38
39 if (tv_future.tv_sec < tv.tv_sec)
40 FAIL_EXIT1 ("clock_settime set wrong time!\n");
41
42 return 0;
43}
44
45#include <support/test-driver.c>
46

source code of glibc/time/tst-clock_settime.c