1 /* $NetBSD: t_threadjmp.c,v 1.2 2017/01/14 21:08:17 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 2008 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 /* 30 * Copyright (c) 1994 Christopher G. Demetriou 31 * All rights reserved. 32 * 33 * Redistribution and use in source and binary forms, with or without 34 * modification, are permitted provided that the following conditions 35 * are met: 36 * 1. Redistributions of source code must retain the above copyright 37 * notice, this list of conditions and the following disclaimer. 38 * 2. Redistributions in binary form must reproduce the above copyright 39 * notice, this list of conditions and the following disclaimer in the 40 * documentation and/or other materials provided with the distribution. 41 * 3. All advertising materials mentioning features or use of this software 42 * must display the following acknowledgement: 43 * This product includes software developed for the 44 * NetBSD Project. See http://www.NetBSD.org/ for 45 * information about NetBSD. 46 * 4. The name of the author may not be used to endorse or promote products 47 * derived from this software without specific prior written permission. 48 * 49 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 50 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 51 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 52 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 53 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 54 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 55 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 56 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 57 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 58 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 59 * 60 * <<Id: LICENSE,v 1.2 2000/06/14 15:57:33 cgd Exp>> 61 */ 62 63 #include <sys/cdefs.h> 64 __COPYRIGHT("@(#) Copyright (c) 2008\ 65 The NetBSD Foundation, inc. All rights reserved."); 66 __RCSID("$NetBSD: t_threadjmp.c,v 1.2 2017/01/14 21:08:17 christos Exp $"); 67 68 #include <sys/types.h> 69 70 #include <errno.h> 71 #include <setjmp.h> 72 #include <signal.h> 73 #include <stdio.h> 74 #include <stdlib.h> 75 #include <string.h> 76 #include <unistd.h> 77 78 #include <pthread.h> 79 80 #include <atf-c.h> 81 82 #define REQUIRE_ERRNO(x) ATF_REQUIRE_MSG(x, "%s", strerror(errno)) 83 84 #define TEST_SETJMP 0 85 #define TEST_U_SETJMP 1 86 #define TEST_SIGSETJMP_SAVE 2 87 #define TEST_SIGSETJMP_NOSAVE 3 88 89 static pthread_t myself = NULL; 90 91 static int expectsignal; 92 93 static void 94 aborthandler(int signo __unused) 95 { 96 ATF_REQUIRE(myself == pthread_self()); 97 ATF_REQUIRE_MSG(expectsignal, "kill(SIGABRT) succeeded"); 98 atf_tc_pass(); 99 } 100 101 static void 102 h_check(int test) 103 { 104 struct sigaction sa; 105 jmp_buf jb; 106 sigjmp_buf sjb; 107 sigset_t ss; 108 int i, x; 109 110 myself = pthread_self(); 111 i = getpid(); 112 113 if (test == TEST_SETJMP || test == TEST_SIGSETJMP_SAVE) 114 expectsignal = 0; 115 else if (test == TEST_U_SETJMP || test == TEST_SIGSETJMP_NOSAVE) 116 expectsignal = 1; 117 else 118 atf_tc_fail("unknown test"); 119 120 sa.sa_handler = aborthandler; 121 sigemptyset(&sa.sa_mask); 122 sa.sa_flags = 0; 123 REQUIRE_ERRNO(sigaction(SIGABRT, &sa, NULL) != -1); 124 REQUIRE_ERRNO(sigemptyset(&ss) != -1); 125 REQUIRE_ERRNO(sigaddset(&ss, SIGABRT) != -1); 126 REQUIRE_ERRNO(sigprocmask(SIG_BLOCK, &ss, NULL) != -1); 127 ATF_REQUIRE(myself == pthread_self()); 128 129 if (test == TEST_SETJMP) 130 x = setjmp(jb); 131 else if (test == TEST_U_SETJMP) 132 x = _setjmp(jb); 133 else 134 x = sigsetjmp(sjb, !expectsignal); 135 136 if (x != 0) { 137 ATF_REQUIRE(myself == pthread_self()); 138 ATF_REQUIRE_MSG(x == i, "setjmp returned wrong value"); 139 kill(i, SIGABRT); 140 ATF_REQUIRE_MSG(!expectsignal, "kill(SIGABRT) failed"); 141 ATF_REQUIRE(myself == pthread_self()); 142 atf_tc_pass(); 143 } 144 145 ATF_REQUIRE(myself == pthread_self()); 146 REQUIRE_ERRNO(sigprocmask(SIG_UNBLOCK, &ss, NULL) != -1); 147 148 if (test == TEST_SETJMP) 149 longjmp(jb, i); 150 else if (test == TEST_U_SETJMP) 151 _longjmp(jb, i); 152 else 153 siglongjmp(sjb, i); 154 155 atf_tc_fail("jmp failed"); 156 } 157 158 ATF_TC(setjmp); 159 ATF_TC_HEAD(setjmp, tc) 160 { 161 atf_tc_set_md_var(tc, "descr", 162 "Checks pthread_self() and setjmp(3)"); 163 } 164 ATF_TC_BODY(setjmp, tc) 165 { 166 h_check(TEST_SETJMP); 167 } 168 169 ATF_TC(_setjmp); 170 ATF_TC_HEAD(_setjmp, tc) 171 { 172 atf_tc_set_md_var(tc, "descr", 173 "Checks pthread_self() and _setjmp(3)"); 174 } 175 ATF_TC_BODY(_setjmp, tc) 176 { 177 h_check(TEST_U_SETJMP); 178 } 179 180 ATF_TC(sigsetjmp_save); 181 ATF_TC_HEAD(sigsetjmp_save, tc) 182 { 183 atf_tc_set_md_var(tc, "descr", 184 "Checks pthread_self() and sigsetjmp(3) with savemask enabled"); 185 } 186 ATF_TC_BODY(sigsetjmp_save, tc) 187 { 188 h_check(TEST_SIGSETJMP_SAVE); 189 } 190 191 ATF_TC(sigsetjmp_nosave); 192 ATF_TC_HEAD(sigsetjmp_nosave, tc) 193 { 194 atf_tc_set_md_var(tc, "descr", 195 "Checks pthread_self() and sigsetjmp(3) with savemask disabled"); 196 } 197 ATF_TC_BODY(sigsetjmp_nosave, tc) 198 { 199 h_check(TEST_SIGSETJMP_NOSAVE); 200 } 201 202 ATF_TP_ADD_TCS(tp) 203 { 204 205 /* 206 * These test cases try to verify setjmp and friends in a program 207 * linked with pthreads, and verify that pthread_self() stays 208 * consistent throughout the program. A setcontext() call invoked 209 * by *setjmp() might clobber the TLS special register used to 210 * implement pthread_self(). 211 */ 212 ATF_TP_ADD_TC(tp, setjmp); 213 ATF_TP_ADD_TC(tp, _setjmp); 214 ATF_TP_ADD_TC(tp, sigsetjmp_save); 215 ATF_TP_ADD_TC(tp, sigsetjmp_nosave); 216 217 return atf_no_error(); 218 } 219