54 lines
862 B
C
54 lines
862 B
C
|
// SPDX-License-Identifier: GPL-2.0-or-later
|
||
|
|
/*
|
||
|
|
* Copyright (c) International Business Machines Corp., 2001
|
||
|
|
* Author: Wayne Boyer
|
||
|
|
* Copyright (c) Linux Test Project, 2002-2022
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*\
|
||
|
|
* [Description]
|
||
|
|
*
|
||
|
|
* Verify that SIGALRM signal scheduled by alarm() in the parent process
|
||
|
|
* is not delivered to the child process.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include "tst_test.h"
|
||
|
|
|
||
|
|
static volatile int alarm_cnt;
|
||
|
|
|
||
|
|
static void verify_alarm(void)
|
||
|
|
{
|
||
|
|
pid_t pid;
|
||
|
|
|
||
|
|
alarm_cnt = 0;
|
||
|
|
|
||
|
|
TST_EXP_PASS_SILENT(alarm(1));
|
||
|
|
pid = SAFE_FORK();
|
||
|
|
|
||
|
|
sleep(3);
|
||
|
|
|
||
|
|
if (pid == 0) {
|
||
|
|
TST_EXP_EQ_LU(alarm_cnt, 0);
|
||
|
|
exit(0);
|
||
|
|
}
|
||
|
|
|
||
|
|
TST_EXP_EQ_LU(alarm_cnt, 1);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void sighandler(int sig LTP_ATTRIBUTE_UNUSED)
|
||
|
|
{
|
||
|
|
alarm_cnt++;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void setup(void)
|
||
|
|
{
|
||
|
|
SAFE_SIGNAL(SIGALRM, sighandler);
|
||
|
|
}
|
||
|
|
|
||
|
|
static struct tst_test test = {
|
||
|
|
.test_all = verify_alarm,
|
||
|
|
.setup = setup,
|
||
|
|
.forks_child = 1,
|
||
|
|
};
|