1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22/*
23 * Copyright 2017 Li-Wen Hsu <lwhsu@FreeBSD.org>
24 */
25
26#include <signal.h>
27#include <stdio.h>
28#include <unistd.h>
29
30int
31main(void)
32{
33
34    sigset_t set;
35    siginfo_t info;
36    struct timespec timeout;
37
38    (void)sigemptyset(&set);
39    (void)sigaddset(&set, SIGHUP);
40    timeout.tv_sec = 1;
41    timeout.tv_nsec = 0;
42
43    for (;;)
44        (void)sigtimedwait(&set, &info, &timeout);
45
46    return (0);
47}
48