t_threadjmp.c revision 314817 
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
89static pthread_t myself = NULL;
90
91static int expectsignal;
92
93static void
94aborthandler(int signo __unused)
95{
96	ATF_REQUIRE(myself == pthread_self());
97	ATF_REQUIRE_MSG(expectsignal, "kill(SIGABRT) succeeded");
98	atf_tc_pass();
99}
100
101static void
102h_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
158ATF_TC(setjmp);
159ATF_TC_HEAD(setjmp, tc)
160{
161	atf_tc_set_md_var(tc, "descr",
162	    "Checks pthread_self() and setjmp(3)");
163}
164ATF_TC_BODY(setjmp, tc)
165{
166	h_check(TEST_SETJMP);
167}
168
169ATF_TC(_setjmp);
170ATF_TC_HEAD(_setjmp, tc)
171{
172	atf_tc_set_md_var(tc, "descr",
173	    "Checks pthread_self() and _setjmp(3)");
174}
175ATF_TC_BODY(_setjmp, tc)
176{
177	h_check(TEST_U_SETJMP);
178}
179
180ATF_TC(sigsetjmp_save);
181ATF_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}
186ATF_TC_BODY(sigsetjmp_save, tc)
187{
188	h_check(TEST_SIGSETJMP_SAVE);
189}
190
191ATF_TC(sigsetjmp_nosave);
192ATF_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}
197ATF_TC_BODY(sigsetjmp_nosave, tc)
198{
199	h_check(TEST_SIGSETJMP_NOSAVE);
200}
201
202ATF_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