65 lines
1.3 KiB
C
65 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* Copyright (c) International Business Machines Corp., 2001,2005
|
|
* Ported to LTP: Wayne Boyer
|
|
* 06/2005 Test for alarm cleanup by Amos Waterland
|
|
*
|
|
* Copyright (c) 2018 Cyril Hrubis <chrubis@suse.cz>
|
|
*/
|
|
|
|
/*
|
|
* Test Description:
|
|
* The return value of the alarm system call should be equal to the
|
|
* amount previously remaining in the alarm clock.
|
|
* A SIGALRM signal should be received after the specified amount of
|
|
* time has elapsed.
|
|
*/
|
|
|
|
#include "tst_test.h"
|
|
|
|
static volatile int alarms_fired = 0;
|
|
|
|
static void run(void)
|
|
{
|
|
unsigned int ret;
|
|
|
|
alarms_fired = 0;
|
|
|
|
ret = alarm(10);
|
|
if (ret)
|
|
tst_res(TFAIL, "alarm() returned non-zero");
|
|
else
|
|
tst_res(TPASS, "alarm() returned zero");
|
|
|
|
sleep(1);
|
|
|
|
ret = alarm(1);
|
|
if (ret == 9)
|
|
tst_res(TPASS, "alarm() returned remainder correctly");
|
|
else
|
|
tst_res(TFAIL, "alarm() returned wrong remained %u", ret);
|
|
|
|
sleep(2);
|
|
|
|
if (alarms_fired == 1)
|
|
tst_res(TPASS, "alarm handler fired once");
|
|
else
|
|
tst_res(TFAIL, "alarm handler filred %u times", alarms_fired);
|
|
}
|
|
|
|
static void sighandler(int sig)
|
|
{
|
|
if (sig == SIGALRM)
|
|
alarms_fired++;
|
|
}
|
|
|
|
static void setup(void)
|
|
{
|
|
SAFE_SIGNAL(SIGALRM, sighandler);
|
|
}
|
|
|
|
static struct tst_test test = {
|
|
.test_all = run,
|
|
.setup = setup,
|
|
};
|