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tst: Add test for settimeofday

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This code brings test to check if time on target machine is properly set.
To avoid any issues with altering the time:

- The time, which was set before the test was executed is restored.

- The time is altered only when cross-test-ssh.sh is executed with
  --allow-time-setting flag

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
This commit is contained in:
Lukasz Majewski 2021-03-07 13:11:55 +01:00
parent 6b6a151c77
commit 6905404496
2 changed files with 57 additions and 1 deletions
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3
time/Makefile
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@ -48,7 +48,8 @@ tests := test_time clocktest tst-posixtz tst-strptime tst_wcsftime \
tst-strptime3 bug-getdate1 tst-strptime-whitespace tst-ftime \
tst-tzname tst-y2039 bug-mktime4 tst-strftime2 tst-strftime3 \
tst-clock tst-clock2 tst-clock_nanosleep tst-cpuclock1 \
tst-adjtime tst-ctime tst-difftime tst-mktime4 tst-clock_settime
tst-adjtime tst-ctime tst-difftime tst-mktime4 tst-clock_settime \
tst-settimeofday
include ../Rules

55
time/tst-settimeofday.c Normal file
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@ -0,0 +1,55 @@
/* Test for settimeofday
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/xtime.h>
#define TIMESPEC_SEC_Y2038_OV 0x7FFFFFFF
#define FUTURE_TIME (TIMESPEC_SEC_Y2038_OV - 10)
static int
do_test (void)
{
const struct timeval tv = { FUTURE_TIME, 0};
struct timespec tv_future, tv_now;
/* Check if altering target time is allowed. */
if (getenv (SETTIME_ENV_NAME) == NULL)
FAIL_UNSUPPORTED ("settimeofday is executed only when "\
SETTIME_ENV_NAME" is set\n");
tv_now = xclock_now (CLOCK_REALTIME);
int ret = settimeofday (&tv, NULL);
if (ret == -1)
FAIL_EXIT1 ("settimeofday failed: %m\n");
tv_future = xclock_now (CLOCK_REALTIME);
/* Restore old time value on target machine. */
xclock_settime (CLOCK_REALTIME, (const struct timespec*) &tv_now);
if (tv_future.tv_sec < tv.tv_sec)
FAIL_EXIT1 ("settimeofday set wrong time!\n");
return 0;
}
#include <support/test-driver.c>