1 /* $NetBSD: t_alarm.c,v 1.2 2011/05/10 06:58:17 jruoho Exp $ */
2
3 /*-
4 * Copyright (c) 2011 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jukka Ruohonen.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31 #include <sys/cdefs.h>
32 __RCSID("$NetBSD: t_alarm.c,v 1.2 2011/05/10 06:58:17 jruoho Exp $");
33
34 #include <sys/wait.h>
35
36 #include <atf-c.h>
37 #include <stdlib.h>
38 #include <signal.h>
39 #include <unistd.h>
40
41 static bool fail;
42 static void handler(int);
43
44 static void
handler(int signo)45 handler(int signo)
46 {
47
48 if (signo == SIGALRM)
49 fail = false;
50 }
51
52 ATF_TC(alarm_basic);
ATF_TC_HEAD(alarm_basic,tc)53 ATF_TC_HEAD(alarm_basic, tc)
54 {
55 atf_tc_set_md_var(tc, "descr", "A basic test of alarm(3)");
56 }
57
ATF_TC_BODY(alarm_basic,tc)58 ATF_TC_BODY(alarm_basic, tc)
59 {
60
61 ATF_REQUIRE(signal(SIGALRM, handler) == 0);
62
63 fail = true;
64
65 (void)alarm(1);
66 (void)sleep(2);
67
68 if (fail != false)
69 atf_tc_fail("alarm(3) failed to deliver signal");
70 }
71
72 ATF_TC(alarm_fork);
ATF_TC_HEAD(alarm_fork,tc)73 ATF_TC_HEAD(alarm_fork, tc)
74 {
75 atf_tc_set_md_var(tc, "descr", "Does fork(2) clear a pending alarm?");
76 }
77
ATF_TC_BODY(alarm_fork,tc)78 ATF_TC_BODY(alarm_fork, tc)
79 {
80 unsigned int rv;
81 pid_t pid;
82 int sta;
83
84 /*
85 * Any pending alarms should be
86 * cleared in the child process.
87 */
88 (void)alarm(60);
89
90 pid = fork();
91 ATF_REQUIRE(pid >= 0);
92
93 if (pid == 0) {
94
95 rv = alarm(0);
96
97 if (rv != 0)
98 _exit(EXIT_FAILURE);
99
100 _exit(EXIT_SUCCESS);
101 }
102
103 (void)alarm(0);
104 (void)wait(&sta);
105
106 if (WIFEXITED(sta) == 0 || WEXITSTATUS(sta) != EXIT_SUCCESS)
107 atf_tc_fail("pending alarm was not cleared for child");
108 }
109
110 ATF_TC(alarm_previous);
ATF_TC_HEAD(alarm_previous,tc)111 ATF_TC_HEAD(alarm_previous, tc)
112 {
113 atf_tc_set_md_var(tc, "descr", "Test return value from alarm(3)");
114 }
115
ATF_TC_BODY(alarm_previous,tc)116 ATF_TC_BODY(alarm_previous, tc)
117 {
118 unsigned int rv;
119
120 /*
121 * See that alarm(3) returns the amount
122 * left on the timer from the previous call.
123 */
124 rv = alarm(60);
125
126 if (rv != 0)
127 goto fail;
128
129 rv = alarm(0);
130
131 if (rv < 50)
132 goto fail;
133
134 (void)alarm(0);
135
136 return;
137
138 fail:
139 atf_tc_fail("invalid return value from alarm(3)");
140 }
141
ATF_TP_ADD_TCS(tp)142 ATF_TP_ADD_TCS(tp)
143 {
144
145 ATF_TP_ADD_TC(tp, alarm_basic);
146 ATF_TP_ADD_TC(tp, alarm_fork);
147 ATF_TP_ADD_TC(tp, alarm_previous);
148
149 return atf_no_error();
150 }
151