1 /* $NetBSD: h_spawnattr.c,v 1.1 2012/02/13 21:03:08 martin Exp $ */ 2 3 /*- 4 * Copyright (c) 2012 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles Zhang <charles@NetBSD.org> and 9 * Martin Husemann <martin@NetBSD.org>. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #include <errno.h> 34 #include <stdio.h> 35 #include <stdlib.h> 36 #include <signal.h> 37 #include <unistd.h> 38 39 /* 40 * Helper to test the hardcoded assumptions from t_spawnattr.c 41 * Exit with apropriate exit status and print diagnostics to 42 * stderr explaining what is wrong. 43 */ 44 int 45 main(int argc, char **argv) 46 { 47 int parent_pipe, res = EXIT_SUCCESS; 48 sigset_t sig; 49 struct sigaction act; 50 ssize_t rd; 51 char tmp; 52 53 sigemptyset(&sig); 54 if (sigprocmask(0, NULL, &sig) < 0) { 55 fprintf(stderr, "%s: sigprocmask error\n", getprogname()); 56 res = EXIT_FAILURE; 57 } 58 if (!sigismember(&sig, SIGUSR1)) { 59 fprintf(stderr, "%s: SIGUSR not in procmask\n", getprogname()); 60 res = EXIT_FAILURE; 61 } 62 if (sigaction(SIGUSR1, NULL, &act) < 0) { 63 fprintf(stderr, "%s: sigaction error\n", getprogname()); 64 res = EXIT_FAILURE; 65 } 66 if (act.sa_sigaction != (void *)SIG_DFL) { 67 fprintf(stderr, "%s: SIGUSR1 action != SIG_DFL\n", 68 getprogname()); 69 res = EXIT_FAILURE; 70 } 71 72 if (argc >= 2) { 73 parent_pipe = atoi(argv[1]); 74 if (parent_pipe > 2) { 75 printf("%s: waiting for command from parent on pipe " 76 "%d\n", getprogname(), parent_pipe); 77 rd = read(parent_pipe, &tmp, 1); 78 if (rd == 1) { 79 printf("%s: got command %c from parent\n", 80 getprogname(), tmp); 81 } else if (rd == -1) { 82 printf("%s: %d is no pipe, errno %d\n", 83 getprogname(), parent_pipe, errno); 84 res = EXIT_FAILURE; 85 } 86 } 87 } 88 89 return res; 90 } 91