xref: /freebsd/contrib/netbsd-tests/lib/libc/sys/t_sigaction.c (revision 59e2ff550c448126b988150ce800cdf73bb5103e)
1 /* $NetBSD: t_sigaction.c,v 1.3 2014/11/04 00:20:19 justin 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 1.3 2014/11/04 00:20:19 justin 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 
44 #ifdef __NetBSD__
45 #include "../../../h_macros.h"
46 #else
47 #include "h_macros.h"
48 #endif
49 
50 static bool handler_called = false;
51 
52 static void
53 #ifdef __FreeBSD__
54 handler(int signo __unused)
55 #else
56 handler(int signo)
57 #endif
58 {
59     handler_called = true;
60 }
61 
62 static void
63 sa_resethand_child(const int flags)
64 {
65     struct sigaction sa;
66 
67     sa.sa_flags = flags;
68     sa.sa_handler = &handler;
69     sigemptyset(&sa.sa_mask);
70 
71     sigaction(SIGUSR1, &sa, NULL);
72     kill(getpid(), SIGUSR1);
73     exit(handler_called ? EXIT_SUCCESS : EXIT_FAILURE);
74 }
75 
76 static void
77 wait_and_check_child(const pid_t pid, const char *fail_message)
78 {
79 	int status;
80 
81 	(void)waitpid(pid, &status, 0);
82 
83 	if (WIFEXITED(status))
84 		ATF_CHECK_EQ(EXIT_SUCCESS, WEXITSTATUS(status));
85 	else
86 		atf_tc_fail("%s; raw exit status was %d", fail_message, status);
87 }
88 
89 static void
90 #ifdef __FreeBSD__
91 catch(int sig __unused)
92 #else
93 catch(int sig)
94 #endif
95 {
96 	return;
97 }
98 
99 ATF_TC(sigaction_basic);
100 ATF_TC_HEAD(sigaction_basic, tc)
101 {
102 
103 	atf_tc_set_md_var(tc, "descr", "Checks for correct I&D cache"
104 	    "synchronization after copying out the trampoline code.");
105 }
106 
107 ATF_TC_BODY(sigaction_basic, tc)
108 {
109 	static struct sigaction sa;
110 
111 	sa.sa_handler = catch;
112 
113 	sigaction(SIGUSR1, &sa, 0);
114 	kill(getpid(), SIGUSR1);
115 	atf_tc_pass();
116 }
117 
118 ATF_TC(sigaction_noflags);
119 ATF_TC_HEAD(sigaction_noflags, tc)
120 {
121 	atf_tc_set_md_var(tc, "descr", "Checks programming a signal with "
122 	    "sigaction(2) but without any flags");
123 }
124 
125 ATF_TC_BODY(sigaction_noflags, tc)
126 {
127 	const pid_t pid = fork();
128 	if (pid == -1)
129 		atf_tc_fail_errno("fork(2) failed");
130 	else if (pid == 0)
131 		sa_resethand_child(0);
132 	else
133 		wait_and_check_child(pid, "Child process did not exit cleanly;"
134 		    " it failed to process the signal");
135 }
136 
137 ATF_TC(sigaction_resethand);
138 ATF_TC_HEAD(sigaction_resethand, tc)
139 {
140 	atf_tc_set_md_var(tc, "descr", "Checks that SA_RESETHAND works");
141 }
142 
143 ATF_TC_BODY(sigaction_resethand, tc)
144 {
145 	const pid_t pid = fork();
146 	if (pid == -1)
147 		atf_tc_fail_errno("fork(2) failed");
148 	else if (pid == 0)
149 		sa_resethand_child(SA_RESETHAND);
150 	else {
151 		wait_and_check_child(pid, "Child process did not exit cleanly;"
152 		    " it either failed to process the signal or SA_RESETHAND"
153 		    " is broken");
154 	}
155 }
156 
157 ATF_TP_ADD_TCS(tp)
158 {
159 
160 	ATF_TP_ADD_TC(tp, sigaction_basic);
161 	ATF_TP_ADD_TC(tp, sigaction_noflags);
162 	ATF_TP_ADD_TC(tp, sigaction_resethand);
163 
164 	return atf_no_error();
165 }
166