66 lines
1.2 KiB
C
66 lines
1.2 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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* Copyright (C) 2017 Cyril Hrubis <chrubis@suse.cz>
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* Ported to LTP: Wayne Boyer
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*/
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/*
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* Check the functionality of the Alarm system call when the time input
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* parameter is zero.
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*
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* Expected Result:
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* The previously specified alarm request should be cancelled and the
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* SIGALRM should not be received.
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*/
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#include <stdio.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <errno.h>
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#include <string.h>
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#include <signal.h>
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#include "tst_test.h"
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static volatile int alarms_received = 0;
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static void sigproc(int sig)
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{
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if (sig == SIGALRM)
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alarms_received++;
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}
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static void setup(void)
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{
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SAFE_SIGNAL(SIGALRM, sigproc);
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}
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static void verify_alarm(void)
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{
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int ret;
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alarm(2);
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sleep(1);
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ret = alarm(0);
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/* Wait for signal SIGALRM */
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sleep(2);
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if (alarms_received)
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tst_res(TFAIL, "Received %i alarms", alarms_received);
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else
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tst_res(TPASS, "Received 0 alarms");
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if (ret == 1)
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tst_res(TPASS, "alarm(0) returned 1");
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else
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tst_res(TFAIL, "alarm(0) returned %i, expected 1", ret);
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}
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static struct tst_test test = {
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.setup = setup,
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.test_all = verify_alarm,
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};
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