1 /* $NetBSD: t_sigaction.c,v 1.5 2017/01/13 21:30:41 christos 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 1.5 2017/01/13 21:30:41 christos 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 #include "h_macros.h"
45
46 static bool handler_called = false;
47
48 static void
handler(int signo __unused)49 handler(int signo __unused)
50 {
51 handler_called = true;
52 }
53
54 static void
sa_resethand_child(const int flags)55 sa_resethand_child(const int flags)
56 {
57 struct sigaction sa;
58
59 sa.sa_flags = flags;
60 sa.sa_handler = &handler;
61 sigemptyset(&sa.sa_mask);
62
63 sigaction(SIGUSR1, &sa, NULL);
64 kill(getpid(), SIGUSR1);
65 exit(handler_called ? EXIT_SUCCESS : EXIT_FAILURE);
66 }
67
68 static void
wait_and_check_child(const pid_t pid,const char * fail_message)69 wait_and_check_child(const pid_t pid, const char *fail_message)
70 {
71 int status;
72
73 (void)waitpid(pid, &status, 0);
74
75 if (WIFEXITED(status))
76 ATF_CHECK_EQ(EXIT_SUCCESS, WEXITSTATUS(status));
77 else
78 atf_tc_fail("%s; raw exit status was %d", fail_message, status);
79 }
80
81 static void
catch(int sig __unused)82 catch(int sig __unused)
83 {
84 return;
85 }
86
87 ATF_TC(sigaction_basic);
ATF_TC_HEAD(sigaction_basic,tc)88 ATF_TC_HEAD(sigaction_basic, tc)
89 {
90
91 atf_tc_set_md_var(tc, "descr", "Checks for correct I&D cache"
92 "synchronization after copying out the trampoline code.");
93 }
94
ATF_TC_BODY(sigaction_basic,tc)95 ATF_TC_BODY(sigaction_basic, tc)
96 {
97 static struct sigaction sa;
98
99 sa.sa_handler = catch;
100
101 sigaction(SIGUSR1, &sa, 0);
102 kill(getpid(), SIGUSR1);
103 atf_tc_pass();
104 }
105
106 ATF_TC(sigaction_noflags);
ATF_TC_HEAD(sigaction_noflags,tc)107 ATF_TC_HEAD(sigaction_noflags, tc)
108 {
109 atf_tc_set_md_var(tc, "descr", "Checks programming a signal with "
110 "sigaction(2) but without any flags");
111 }
112
ATF_TC_BODY(sigaction_noflags,tc)113 ATF_TC_BODY(sigaction_noflags, tc)
114 {
115 const pid_t pid = fork();
116 if (pid == -1)
117 atf_tc_fail_errno("fork(2) failed");
118 else if (pid == 0)
119 sa_resethand_child(0);
120 else
121 wait_and_check_child(pid, "Child process did not exit cleanly;"
122 " it failed to process the signal");
123 }
124
125 ATF_TC(sigaction_resethand);
ATF_TC_HEAD(sigaction_resethand,tc)126 ATF_TC_HEAD(sigaction_resethand, tc)
127 {
128 atf_tc_set_md_var(tc, "descr", "Checks that SA_RESETHAND works");
129 }
130
ATF_TC_BODY(sigaction_resethand,tc)131 ATF_TC_BODY(sigaction_resethand, tc)
132 {
133 const pid_t pid = fork();
134 if (pid == -1)
135 atf_tc_fail_errno("fork(2) failed");
136 else if (pid == 0)
137 sa_resethand_child(SA_RESETHAND);
138 else {
139 wait_and_check_child(pid, "Child process did not exit cleanly;"
140 " it either failed to process the signal or SA_RESETHAND"
141 " is broken");
142 }
143 }
144
ATF_TP_ADD_TCS(tp)145 ATF_TP_ADD_TCS(tp)
146 {
147
148 ATF_TP_ADD_TC(tp, sigaction_basic);
149 ATF_TP_ADD_TC(tp, sigaction_noflags);
150 ATF_TP_ADD_TC(tp, sigaction_resethand);
151
152 return atf_no_error();
153 }
154