t_sigaction.c revision 272345 
1/* $NetBSD: t_sigaction.c,v 1.2 2012/11/07 16:51:16 pgoyette 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 1.2 2012/11/07 16:51:16 pgoyette 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#include <atf-c/config.h>
44
45#include "../../../h_macros.h"
46
47static bool handler_called = false;
48
49static void
50handler(int signo)
51{
52    handler_called = true;
53}
54
55static void
56sa_resethand_child(const int flags)
57{
58    struct sigaction sa;
59
60    sa.sa_flags = flags;
61    sa.sa_handler = &handler;
62    sigemptyset(&sa.sa_mask);
63
64    sigaction(SIGUSR1, &sa, NULL);
65    kill(getpid(), SIGUSR1);
66    exit(handler_called ? EXIT_SUCCESS : EXIT_FAILURE);
67}
68
69static void
70wait_and_check_child(const pid_t pid, const char *fail_message)
71{
72	int status;
73
74	(void)waitpid(pid, &status, 0);
75
76	if (WIFEXITED(status))
77		ATF_CHECK_EQ(EXIT_SUCCESS, WEXITSTATUS(status));
78	else
79		atf_tc_fail("%s; raw exit status was %d", fail_message, status);
80}
81
82static void
83catch(int sig)
84{
85	return;
86}
87
88ATF_TC(sigaction_basic);
89ATF_TC_HEAD(sigaction_basic, tc)
90{
91
92	atf_tc_set_md_var(tc, "descr", "Checks for correct I&D cache"
93	    "synchronization after copying out the trampoline code.");
94}
95
96ATF_TC_BODY(sigaction_basic, tc)
97{
98	static struct sigaction sa;
99
100	sa.sa_handler = catch;
101
102	sigaction(SIGUSR1, &sa, 0);
103	kill(getpid(), SIGUSR1);
104	atf_tc_pass();
105}
106
107ATF_TC(sigaction_noflags);
108ATF_TC_HEAD(sigaction_noflags, tc)
109{
110	atf_tc_set_md_var(tc, "descr", "Checks programming a signal with "
111	    "sigaction(2) but without any flags");
112}
113
114ATF_TC_BODY(sigaction_noflags, tc)
115{
116	const pid_t pid = fork();
117	if (pid == -1)
118		atf_tc_fail_errno("fork(2) failed");
119	else if (pid == 0)
120		sa_resethand_child(0);
121	else
122		wait_and_check_child(pid, "Child process did not exit cleanly;"
123		    " it failed to process the signal");
124}
125
126ATF_TC(sigaction_resethand);
127ATF_TC_HEAD(sigaction_resethand, tc)
128{
129	atf_tc_set_md_var(tc, "descr", "Checks that SA_RESETHAND works");
130}
131
132ATF_TC_BODY(sigaction_resethand, tc)
133{
134	const pid_t pid = fork();
135	if (pid == -1)
136		atf_tc_fail_errno("fork(2) failed");
137	else if (pid == 0)
138		sa_resethand_child(SA_RESETHAND);
139	else {
140		wait_and_check_child(pid, "Child process did not exit cleanly;"
141		    " it either failed to process the signal or SA_RESETHAND"
142		    " is broken");
143	}
144}
145
146ATF_TP_ADD_TCS(tp)
147{
148
149	ATF_TP_ADD_TC(tp, sigaction_basic);
150	ATF_TP_ADD_TC(tp, sigaction_noflags);
151	ATF_TP_ADD_TC(tp, sigaction_resethand);
152
153	return atf_no_error();
154}
155