1 /* $NetBSD: t_nanosleep.c,v 1.3 2013/03/31 16:47:16 christos 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_nanosleep.c,v 1.3 2013/03/31 16:47:16 christos Exp $");
33
34 #include <sys/time.h>
35 #include <sys/wait.h>
36
37 #include <atf-c.h>
38 #include <errno.h>
39 #include <time.h>
40 #include <signal.h>
41 #include <stdio.h>
42 #include <stdlib.h>
43 #include <string.h>
44 #include <sysexits.h>
45 #include <unistd.h>
46
47 static void
48 #ifdef __FreeBSD__
handler(int signo __unused)49 handler(int signo __unused)
50 #else
51 handler(int signo)
52 #endif
53 {
54 /* Nothing. */
55 }
56
57 ATF_TC(nanosleep_basic);
ATF_TC_HEAD(nanosleep_basic,tc)58 ATF_TC_HEAD(nanosleep_basic, tc)
59 {
60 atf_tc_set_md_var(tc, "descr", "Test that nanosleep(2) works");
61 }
62
ATF_TC_BODY(nanosleep_basic,tc)63 ATF_TC_BODY(nanosleep_basic, tc)
64 {
65 static const size_t maxiter = 10;
66 struct timespec ts1, ts2, tsn;
67 size_t i;
68
69 for (i = 1; i < maxiter; i++) {
70
71 tsn.tv_sec = 0;
72 tsn.tv_nsec = i;
73
74 (void)memset(&ts1, 0, sizeof(struct timespec));
75 (void)memset(&ts2, 0, sizeof(struct timespec));
76
77 ATF_REQUIRE(clock_gettime(CLOCK_MONOTONIC, &ts1) == 0);
78 ATF_REQUIRE(nanosleep(&tsn, NULL) == 0);
79 ATF_REQUIRE(clock_gettime(CLOCK_MONOTONIC, &ts2) == 0);
80
81 /*
82 * Verify that we slept at least one nanosecond.
83 */
84 if (timespeccmp(&ts2, &ts1, <=) != 0) {
85
86 (void)fprintf(stderr,
87 "sleep time:: sec %llu, nsec %lu\n\t\t"
88 "ts1: sec %llu, nsec %lu\n\t\t"
89 "ts2: sec %llu, nsec %lu\n",
90 (unsigned long long)tsn.tv_sec, tsn.tv_nsec,
91 (unsigned long long)ts1.tv_sec, ts1.tv_nsec,
92 (unsigned long long)ts2.tv_sec, ts2.tv_nsec);
93
94 atf_tc_fail_nonfatal("inaccuracies in sleep time "
95 "(resolution = %lu nsec)", tsn.tv_nsec);
96 }
97 }
98 }
99
100 ATF_TC(nanosleep_err);
ATF_TC_HEAD(nanosleep_err,tc)101 ATF_TC_HEAD(nanosleep_err, tc)
102 {
103 atf_tc_set_md_var(tc, "descr",
104 "Test errors from nanosleep(2) (PR bin/14558)");
105 }
106
ATF_TC_BODY(nanosleep_err,tc)107 ATF_TC_BODY(nanosleep_err, tc)
108 {
109 struct timespec ts;
110
111 ts.tv_sec = 1;
112 ts.tv_nsec = -1;
113 errno = 0;
114 ATF_REQUIRE_ERRNO(EINVAL, nanosleep(&ts, NULL) == -1);
115
116 ts.tv_sec = 1;
117 ts.tv_nsec = 1000000000;
118 errno = 0;
119 ATF_REQUIRE_ERRNO(EINVAL, nanosleep(&ts, NULL) == -1);
120
121 ts.tv_sec = -1;
122 ts.tv_nsec = 0;
123 errno = 0;
124 ATF_REQUIRE_ERRNO(0, nanosleep(&ts, NULL) == 0);
125
126 errno = 0;
127 ATF_REQUIRE_ERRNO(EFAULT, nanosleep((void *)-1, NULL) == -1);
128 }
129
130 ATF_TC(nanosleep_sig);
ATF_TC_HEAD(nanosleep_sig,tc)131 ATF_TC_HEAD(nanosleep_sig, tc)
132 {
133 atf_tc_set_md_var(tc, "descr", "Test signal for nanosleep(2)");
134 }
135
ATF_TC_BODY(nanosleep_sig,tc)136 ATF_TC_BODY(nanosleep_sig, tc)
137 {
138 struct timespec tsn, tsr;
139 pid_t pid;
140 int sta;
141
142 /*
143 * Test that a signal interrupts nanosleep(2).
144 *
145 * (In which case the return value should be -1 and the
146 * second parameter should contain the unslept time.)
147 */
148 pid = fork();
149
150 ATF_REQUIRE(pid >= 0);
151 ATF_REQUIRE(signal(SIGINT, handler) == 0);
152
153 if (pid == 0) {
154
155 tsn.tv_sec = 10;
156 tsn.tv_nsec = 0;
157
158 tsr.tv_sec = 0;
159 tsr.tv_nsec = 0;
160
161 errno = 0;
162
163 if (nanosleep(&tsn, &tsr) != -1)
164 _exit(EXIT_FAILURE);
165
166 if (errno != EINTR)
167 _exit(EXIT_FAILURE);
168
169 if (tsr.tv_sec == 0 && tsr.tv_nsec == 0)
170 _exit(EXIT_FAILURE);
171
172 _exit(EXIT_SUCCESS);
173 }
174
175 (void)sleep(1);
176 (void)kill(pid, SIGINT);
177 (void)wait(&sta);
178
179 if (WIFEXITED(sta) == 0 || WEXITSTATUS(sta) != EXIT_SUCCESS)
180 atf_tc_fail("signal did not interrupt nanosleep(2)");
181 }
182
ATF_TP_ADD_TCS(tp)183 ATF_TP_ADD_TCS(tp)
184 {
185
186 ATF_TP_ADD_TC(tp, nanosleep_basic);
187 ATF_TP_ADD_TC(tp, nanosleep_err);
188 ATF_TP_ADD_TC(tp, nanosleep_sig);
189
190 return atf_no_error();
191 }
192