1 /*
2 * Copyright (c) International Business Machines Corp., 2001,2005
3 * 07/2001 Ported by Wayne Boyer
4 * 06/2005 Test for alarm cleanup by Amos Waterland
5 *
6 * Copyright (c) 2018 Cyril Hrubis <chrubis@suse.cz>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
16 * the GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23 /*
24 * Test Description:
25 * The return value of the alarm system call should be equal to the
26 * amount previously remaining in the alarm clock.
27 * A SIGALRM signal should be received after the specified amount of
28 * time has elapsed.
29 */
30
31 #include "tst_test.h"
32
33 static volatile int alarms_fired = 0;
34
run(void)35 static void run(void)
36 {
37 unsigned int ret;
38
39 alarms_fired = 0;
40
41 ret = alarm(10);
42 if (ret)
43 tst_res(TFAIL, "alarm() returned non-zero");
44 else
45 tst_res(TPASS, "alarm() returned zero");
46
47 sleep(1);
48
49 ret = alarm(1);
50 if (ret == 9)
51 tst_res(TPASS, "alarm() returned remainder correctly");
52 else
53 tst_res(TFAIL, "alarm() returned wrong remained %u", ret);
54
55 sleep(2);
56
57 if (alarms_fired == 1)
58 tst_res(TPASS, "alarm handler fired once");
59 else
60 tst_res(TFAIL, "alarm handler filred %u times", alarms_fired);
61 }
62
sighandler(int sig)63 static void sighandler(int sig)
64 {
65 if (sig == SIGALRM)
66 alarms_fired++;
67 }
68
setup(void)69 static void setup(void)
70 {
71 SAFE_SIGNAL(SIGALRM, sighandler);
72 }
73
74 static struct tst_test test = {
75 .test_all = run,
76 .setup = setup,
77 };
78