81 lines
1.5 KiB
C
81 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/* Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved.
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* Author: Billy Jean Horne
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*
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* Test Description:
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* 1) alarm() return UINT_MAX if seconds is UINT_MAX.
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* 2) alarm() return UINT_MAX/2 if seconds is UINT_MAX/2.
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* 3) alarm() return UINT_MAX/4 if seconds is UINT_MAX/4.
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*/
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#include <unistd.h>
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#include <errno.h>
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#include <sys/signal.h>
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#include <limits.h>
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#include "tst_test.h"
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static volatile int alarms_received;
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static struct tcase {
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char *str;
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unsigned int sec;
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} tcases[] = {
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{"INT_MAX", INT_MAX},
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{"UINT_MAX/2", UINT_MAX/2},
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{"UINT_MAX/4", UINT_MAX/4},
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};
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static void verify_alarm(unsigned int n)
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{
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struct tcase *tc = &tcases[n];
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unsigned int ret;
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alarms_received = 0;
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ret = alarm(tc->sec);
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if (ret != 0) {
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tst_res(TFAIL,
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"alarm(%u) returned %ld, when 0 was ",
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tc->sec, TST_RET);
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return;
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}
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TEST(alarm(0));
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if (alarms_received == 1) {
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tst_res(TFAIL,
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"alarm(%u) signal was received for value %s",
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tc->sec, tc->str);
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return;
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}
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if (tc->sec != TST_RET) {
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tst_res(TFAIL,
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"alarm(%u) returned %ld as unexpected",
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tc->sec, TST_RET);
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return;
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}
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tst_res(TPASS,
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"alarm(%u) returned %ld as expected "
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"for value %s",
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tc->sec, TST_RET, tc->str);
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}
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static void sighandler(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, sighandler);
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}
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static struct tst_test test = {
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.tcnt = ARRAY_SIZE(tcases),
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.test = verify_alarm,
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.setup = setup,
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};
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