1 /* $NetBSD: t_sigaction.c,v 1.1 2011/10/15 07:00:48 jruoho Exp $ */ 2 3 /*- 4 * Copyright (c) 2010 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __COPYRIGHT("@(#) Copyright (c) 2010\ 31 The NetBSD Foundation, inc. All rights reserved."); 32 __RCSID("$NetBSD: t_sigaction.c,v 1.1 2011/10/15 07:00:48 jruoho Exp $"); 33 34 #include <sys/wait.h> 35 36 #include <signal.h> 37 #include <stdbool.h> 38 #include <stdlib.h> 39 #include <string.h> 40 #include <unistd.h> 41 42 #include <atf-c.h> 43 #include <atf-c/config.h> 44 45 #include "../../../h_macros.h" 46 47 static bool handler_called = false; 48 49 static void 50 handler(int signo) 51 { 52 handler_called = true; 53 } 54 55 static void 56 sa_resethand_child(const int flags) 57 { 58 struct sigaction sa; 59 60 sa.sa_flags = flags; 61 sa.sa_handler = &handler; 62 sigemptyset(&sa.sa_mask); 63 64 sigaction(SIGUSR1, &sa, NULL); 65 kill(getpid(), SIGUSR1); 66 exit(handler_called ? EXIT_SUCCESS : EXIT_FAILURE); 67 } 68 69 static void 70 wait_and_check_child(const pid_t pid, const char *fail_message) 71 { 72 int status; 73 74 (void)waitpid(pid, &status, 0); 75 76 if (WIFEXITED(status)) 77 ATF_CHECK_EQ(EXIT_SUCCESS, WEXITSTATUS(status)); 78 else 79 atf_tc_fail("%s; raw exit status was %d", fail_message, status); 80 } 81 82 ATF_TC(sigaction_noflags); 83 ATF_TC_HEAD(sigaction_noflags, tc) 84 { 85 atf_tc_set_md_var(tc, "descr", "Checks programming a signal with " 86 "sigaction(2) but without any flags"); 87 } 88 89 ATF_TC_BODY(sigaction_noflags, tc) 90 { 91 const pid_t pid = fork(); 92 if (pid == -1) 93 atf_tc_fail_errno("fork(2) failed"); 94 else if (pid == 0) 95 sa_resethand_child(0); 96 else 97 wait_and_check_child(pid, "Child process did not exit cleanly;" 98 " it failed to process the signal"); 99 } 100 101 ATF_TC(sigaction_resethand); 102 ATF_TC_HEAD(sigaction_resethand, tc) 103 { 104 atf_tc_set_md_var(tc, "descr", "Checks that SA_RESETHAND works"); 105 } 106 107 ATF_TC_BODY(sigaction_resethand, tc) 108 { 109 const pid_t pid = fork(); 110 if (pid == -1) 111 atf_tc_fail_errno("fork(2) failed"); 112 else if (pid == 0) 113 sa_resethand_child(SA_RESETHAND); 114 else { 115 wait_and_check_child(pid, "Child process did not exit cleanly;" 116 " it either failed to process the signal or SA_RESETHAND" 117 " is broken"); 118 } 119 } 120 121 ATF_TP_ADD_TCS(tp) 122 { 123 124 ATF_TP_ADD_TC(tp, sigaction_noflags); 125 ATF_TP_ADD_TC(tp, sigaction_resethand); 126 127 return atf_no_error(); 128 } 129