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 30 int main(void)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