t_sigaction.c revision 276478 
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
50static bool handler_called = false;
51
52static void
53#ifdef __FreeBSD__
54handler(int signo __unused)
55#else
56handler(int signo)
57#endif
58{
59    handler_called = true;
60}
61
62static void
63sa_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
76static void
77wait_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
89static void
90#ifdef __FreeBSD__
91catch(int sig __unused)
92#else
93catch(int sig)
94#endif
95{
96	return;
97}
98
99ATF_TC(sigaction_basic);
100ATF_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
107ATF_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
118ATF_TC(sigaction_noflags);
119ATF_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
125ATF_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
137ATF_TC(sigaction_resethand);
138ATF_TC_HEAD(sigaction_resethand, tc)
139{
140	atf_tc_set_md_var(tc, "descr", "Checks that SA_RESETHAND works");
141}
142
143ATF_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
157ATF_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