61 lines
1.1 KiB
C
61 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) International Business Machines Corp., 2001
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* Author: Wayne Boyer
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*
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* Test Description:
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* By the SIGALRM signal, check whether the previously specified alarm request
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* was cleared in the child process or not.
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*/
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#include <unistd.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <signal.h>
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#include "tst_test.h"
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static volatile int alarm_cnt = 0;
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static void verify_alarm(void)
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{
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pid_t pid;
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alarm_cnt = 0;
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TEST(alarm(1));
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pid = SAFE_FORK();
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sleep(3);
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if (pid == 0) {
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if (alarm_cnt == 0) {
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tst_res(TPASS, "alarm() request cleared in child");
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} else {
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tst_res(TFAIL, "alarm() request not cleared in "
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"child; alarms received:%d", alarm_cnt);
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}
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exit(0);
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}
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if (alarm_cnt != 1)
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tst_res(TFAIL, "Sigalarms in parent %i, expected 1", alarm_cnt);
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else
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tst_res(TPASS, "Got 1 sigalarm in parent");
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}
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static void sighandler(int sig LTP_ATTRIBUTE_UNUSED)
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{
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alarm_cnt++;
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}
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static void setup(void)
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{
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SAFE_SIGNAL(SIGALRM, sighandler);
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}
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static struct tst_test test = {
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.test_all = verify_alarm,
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.setup = setup,
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.forks_child = 1,
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};
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