1 /* $NetBSD: t_getrusage.c,v 1.3 2014/09/03 19:24:12 matt 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_getrusage.c,v 1.3 2014/09/03 19:24:12 matt Exp $");
33
34 #include <sys/resource.h>
35 #include <sys/time.h>
36
37 #include <atf-c.h>
38 #include <errno.h>
39 #include <limits.h>
40 #include <signal.h>
41 #include <stdint.h>
42 #include <string.h>
43
44 static void work(void);
45 static void sighandler(int);
46
47 static const size_t maxiter = 2000;
48
49 static void
sighandler(int signo)50 sighandler(int signo)
51 {
52 /* Nothing. */
53 }
54
55 static void
work(void)56 work(void)
57 {
58 size_t n = UINT16_MAX * 10;
59
60 while (n > 0) {
61 #ifdef __or1k__
62 asm volatile("l.nop"); /* Do something. */
63 #else
64 asm volatile("nop"); /* Do something. */
65 #endif
66 n--;
67 }
68 }
69
70 ATF_TC(getrusage_err);
ATF_TC_HEAD(getrusage_err,tc)71 ATF_TC_HEAD(getrusage_err, tc)
72 {
73 atf_tc_set_md_var(tc, "descr", "Test error conditions");
74 }
75
ATF_TC_BODY(getrusage_err,tc)76 ATF_TC_BODY(getrusage_err, tc)
77 {
78 struct rusage ru;
79
80 errno = 0;
81
82 ATF_REQUIRE(getrusage(INT_MAX, &ru) != 0);
83 ATF_REQUIRE(errno == EINVAL);
84
85 errno = 0;
86
87 ATF_REQUIRE(getrusage(RUSAGE_SELF, (void *)0) != 0);
88 ATF_REQUIRE(errno == EFAULT);
89 }
90
91 ATF_TC(getrusage_sig);
ATF_TC_HEAD(getrusage_sig,tc)92 ATF_TC_HEAD(getrusage_sig, tc)
93 {
94 atf_tc_set_md_var(tc, "descr", "Test signal count with getrusage(2)");
95 }
96
ATF_TC_BODY(getrusage_sig,tc)97 ATF_TC_BODY(getrusage_sig, tc)
98 {
99 struct rusage ru;
100 const long n = 5;
101 int i;
102
103 /*
104 * Test that signals are recorded.
105 */
106 ATF_REQUIRE(signal(SIGUSR1, sighandler) != SIG_ERR);
107
108 for (i = 0; i < n; i++)
109 ATF_REQUIRE(raise(SIGUSR1) == 0);
110
111 (void)memset(&ru, 0, sizeof(struct rusage));
112 ATF_REQUIRE(getrusage(RUSAGE_SELF, &ru) == 0);
113
114 if (n != ru.ru_nsignals)
115 atf_tc_fail("getrusage(2) did not record signals");
116 }
117
118 ATF_TC(getrusage_utime_back);
ATF_TC_HEAD(getrusage_utime_back,tc)119 ATF_TC_HEAD(getrusage_utime_back, tc)
120 {
121 atf_tc_set_md_var(tc, "descr", "Test bogus values from getrusage(2)");
122 }
123
ATF_TC_BODY(getrusage_utime_back,tc)124 ATF_TC_BODY(getrusage_utime_back, tc)
125 {
126 struct rusage ru1, ru2;
127 size_t i;
128
129 /*
130 * Test that two consecutive calls are sane.
131 */
132 atf_tc_expect_fail("PR kern/30115");
133
134 for (i = 0; i < maxiter; i++) {
135
136 (void)memset(&ru1, 0, sizeof(struct rusage));
137 (void)memset(&ru2, 0, sizeof(struct rusage));
138
139 work();
140
141 ATF_REQUIRE(getrusage(RUSAGE_SELF, &ru1) == 0);
142
143 work();
144
145 ATF_REQUIRE(getrusage(RUSAGE_SELF, &ru2) == 0);
146
147 if (timercmp(&ru2.ru_utime, &ru1.ru_utime, <) != 0)
148 atf_tc_fail("user time went backwards");
149 }
150
151 atf_tc_fail("anticipated error did not occur");
152 }
153
154 ATF_TC(getrusage_utime_zero);
ATF_TC_HEAD(getrusage_utime_zero,tc)155 ATF_TC_HEAD(getrusage_utime_zero, tc)
156 {
157 atf_tc_set_md_var(tc, "descr", "Test zero utime from getrusage(2)");
158 }
159
ATF_TC_BODY(getrusage_utime_zero,tc)160 ATF_TC_BODY(getrusage_utime_zero, tc)
161 {
162 struct rusage ru;
163 size_t i;
164
165 /*
166 * Test that getrusage(2) does not return
167 * zero user time for the calling process.
168 *
169 * See also (duplicate) PR port-amd64/41734.
170 */
171 atf_tc_expect_fail("PR kern/30115");
172
173 for (i = 0; i < maxiter; i++) {
174
175 work();
176
177 (void)memset(&ru, 0, sizeof(struct rusage));
178
179 ATF_REQUIRE(getrusage(RUSAGE_SELF, &ru) == 0);
180
181 if (ru.ru_utime.tv_sec == 0 && ru.ru_utime.tv_usec == 0)
182 atf_tc_fail("zero user time from getrusage(2)");
183 }
184
185 atf_tc_fail("anticipated error did not occur");
186 }
187
ATF_TP_ADD_TCS(tp)188 ATF_TP_ADD_TCS(tp)
189 {
190
191 ATF_TP_ADD_TC(tp, getrusage_err);
192 ATF_TP_ADD_TC(tp, getrusage_sig);
193 ATF_TP_ADD_TC(tp, getrusage_utime_back);
194 ATF_TP_ADD_TC(tp, getrusage_utime_zero);
195
196 return atf_no_error();
197 }
198