1 /*- 2 * Copyright (c) 2014 Mark Johnston <markj@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 #ifdef __FBSDID 29 __FBSDID("$FreeBSD: head/lib/libproc/tests/target_prog.c 271937 2014-09-21 21:25:41Z markj $"); 30 #endif 31 __RCSID("$NetBSD: target_prog.c,v 1.2 2015/09/24 14:12:48 christos Exp $"); 32 33 #include <err.h> 34 #include <signal.h> 35 #include <stdlib.h> 36 #include <string.h> 37 #include <unistd.h> 38 39 static volatile sig_atomic_t saw; 40 41 static void 42 usr1(int sig __unused) 43 { 44 45 saw = 1; 46 } 47 48 int 49 main(int argc, char **argv) 50 { 51 52 if (argc == 1) 53 return (EXIT_SUCCESS); 54 if (argc == 2 && strcmp(argv[1], "-s") == 0) { 55 if (signal(SIGUSR1, usr1) == SIG_ERR) 56 err(1, "signal"); 57 if (kill(getpid(), SIGUSR1) != 0) 58 err(1, "kill"); 59 return (saw == 1 ? EXIT_SUCCESS : EXIT_FAILURE); 60 } 61 return (EXIT_FAILURE); 62 } 63