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