mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-30 08:40:07 +00:00
4de01867dc
The tst-clock_adjtime can be adjusted to be reused for also testing adjtimex. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
62 lines
1.9 KiB
C
62 lines
1.9 KiB
C
/* Test for clock_adjtime
|
|
Copyright (C) 2021 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 Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <time.h>
|
|
#include <stdlib.h>
|
|
#include <sys/time.h>
|
|
#include <support/check.h>
|
|
#include <support/timespec.h>
|
|
|
|
#ifndef ADJTIME_CALL
|
|
# define ADJTIME_CALL(__clock, __timex) clock_adjtime (__clock, __timex)
|
|
#endif
|
|
|
|
static int
|
|
do_test (void)
|
|
{
|
|
struct timespec tv_then, tv_now;
|
|
struct timex delta;
|
|
|
|
/* Check if altering target time is allowed. */
|
|
if (getenv (SETTIME_ENV_NAME) == NULL)
|
|
FAIL_UNSUPPORTED ("clock_adjtime is executed only when "\
|
|
SETTIME_ENV_NAME" is set\n");
|
|
|
|
tv_then = xclock_now (CLOCK_REALTIME);
|
|
|
|
/* Setup time value to adjust - 1 sec. */
|
|
delta.time.tv_sec = 1;
|
|
delta.time.tv_usec = 0;
|
|
delta.modes = ADJ_SETOFFSET;
|
|
|
|
int ret = ADJTIME_CALL (CLOCK_REALTIME, &delta);
|
|
if (ret == -1)
|
|
FAIL_EXIT1 ("clock_adjtime failed: %m\n");
|
|
|
|
tv_now = xclock_now (CLOCK_REALTIME);
|
|
|
|
/* Check if clock_adjtime adjusted the system time. */
|
|
struct timespec r = timespec_sub (tv_now, tv_then);
|
|
TEST_COMPARE (support_timespec_check_in_range
|
|
((struct timespec) { 1, 0 }, r, 0.9, 1.1), 1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#include <support/test-driver.c>
|