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/* Test for ntp_gettime.
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/timex.h>
#include <support/check.h>
#include <support/xtime.h>
#ifndef NTP_GETTIME_SYSCALL
# define NTP_GETTIME_SYSCALL ntp_gettime
#endif
#define STR(__s) #__s
static int
do_test (void)
{
struct timespec tv_before_ntp, tv_after_ntp;
struct ntptimeval ntv;
/* To prevent seconds rollover (which is very unlikely though),
loop until we do match seconds values before and after
call to ntp_gettime. */
do
{
tv_before_ntp = xclock_now (CLOCK_REALTIME);
int ret = NTP_GETTIME_SYSCALL (&ntv);
if (ret == -1)
FAIL_EXIT1 (STR(NTP_GETTIME_SYSCALL)" failed: %m\n");
tv_after_ntp = xclock_now (CLOCK_REALTIME);
}
while (tv_after_ntp.tv_sec != tv_before_ntp.tv_sec);
TEST_COMPARE (tv_after_ntp.tv_sec, ntv.time.tv_sec);
return 0;
}
#include <support/test-driver.c>
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