1 /* $NetBSD: t_getrusage.c,v 1.5 2017/01/13 20:31:06 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_getrusage.c,v 1.5 2017/01/13 20:31:06 christos 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 __unused)50 sighandler(int signo __unused)
51 {
52 /* Nothing. */
53 }
54
55 #ifdef __FreeBSD__
56 #define asm __asm
57 #endif
58
59 static void
work(void)60 work(void)
61 {
62 size_t n = UINT16_MAX * 10;
63
64 while (n > 0) {
65 #ifdef __or1k__
66 asm volatile("l.nop"); /* Do something. */
67 #elif defined(__ia64__)
68 asm volatile("nop 0"); /* Do something. */
69 #else
70 asm volatile("nop"); /* Do something. */
71 #endif
72 n--;
73 }
74 }
75
76 ATF_TC(getrusage_err);
ATF_TC_HEAD(getrusage_err,tc)77 ATF_TC_HEAD(getrusage_err, tc)
78 {
79 atf_tc_set_md_var(tc, "descr", "Test error conditions");
80 }
81
ATF_TC_BODY(getrusage_err,tc)82 ATF_TC_BODY(getrusage_err, tc)
83 {
84 struct rusage ru;
85
86 errno = 0;
87
88 ATF_REQUIRE(getrusage(INT_MAX, &ru) != 0);
89 ATF_REQUIRE(errno == EINVAL);
90
91 errno = 0;
92
93 ATF_REQUIRE(getrusage(RUSAGE_SELF, (void *)0) != 0);
94 ATF_REQUIRE(errno == EFAULT);
95 }
96
97 ATF_TC(getrusage_sig);
ATF_TC_HEAD(getrusage_sig,tc)98 ATF_TC_HEAD(getrusage_sig, tc)
99 {
100 atf_tc_set_md_var(tc, "descr", "Test signal count with getrusage(2)");
101 }
102
ATF_TC_BODY(getrusage_sig,tc)103 ATF_TC_BODY(getrusage_sig, tc)
104 {
105 struct rusage ru;
106 const long n = 5;
107 int i;
108
109 /*
110 * Test that signals are recorded.
111 */
112 ATF_REQUIRE(signal(SIGUSR1, sighandler) != SIG_ERR);
113
114 for (i = 0; i < n; i++)
115 ATF_REQUIRE(raise(SIGUSR1) == 0);
116
117 (void)memset(&ru, 0, sizeof(struct rusage));
118 ATF_REQUIRE(getrusage(RUSAGE_SELF, &ru) == 0);
119
120 if (n != ru.ru_nsignals)
121 atf_tc_fail("getrusage(2) did not record signals");
122 }
123
124 ATF_TC(getrusage_utime_back);
ATF_TC_HEAD(getrusage_utime_back,tc)125 ATF_TC_HEAD(getrusage_utime_back, tc)
126 {
127 atf_tc_set_md_var(tc, "descr", "Test bogus values from getrusage(2)");
128 }
129
ATF_TC_BODY(getrusage_utime_back,tc)130 ATF_TC_BODY(getrusage_utime_back, tc)
131 {
132 struct rusage ru1, ru2;
133 size_t i;
134
135 /*
136 * Test that two consecutive calls are sane.
137 */
138 #ifdef __NetBSD__
139 atf_tc_expect_fail("PR kern/30115");
140 #endif
141
142 for (i = 0; i < maxiter; i++) {
143
144 (void)memset(&ru1, 0, sizeof(struct rusage));
145 (void)memset(&ru2, 0, sizeof(struct rusage));
146
147 work();
148
149 ATF_REQUIRE(getrusage(RUSAGE_SELF, &ru1) == 0);
150
151 work();
152
153 ATF_REQUIRE(getrusage(RUSAGE_SELF, &ru2) == 0);
154
155 if (timercmp(&ru2.ru_utime, &ru1.ru_utime, <) != 0)
156 atf_tc_fail("user time went backwards");
157 }
158
159 #ifdef __NetBSD__
160 atf_tc_fail("anticipated error did not occur");
161 #endif
162 }
163
164 ATF_TC(getrusage_utime_zero);
ATF_TC_HEAD(getrusage_utime_zero,tc)165 ATF_TC_HEAD(getrusage_utime_zero, tc)
166 {
167 atf_tc_set_md_var(tc, "descr", "Test zero utime from getrusage(2)");
168 }
169
ATF_TC_BODY(getrusage_utime_zero,tc)170 ATF_TC_BODY(getrusage_utime_zero, tc)
171 {
172 struct rusage ru;
173 size_t i;
174
175 #ifdef __FreeBSD__
176 atf_tc_skip("this testcase passes/fails sporadically on FreeBSD/i386 "
177 "@ r273153 (at least)");
178 #endif
179
180 /*
181 * Test that getrusage(2) does not return
182 * zero user time for the calling process.
183 *
184 * See also (duplicate) PR port-amd64/41734.
185 */
186 atf_tc_expect_fail("PR kern/30115");
187
188 for (i = 0; i < maxiter; i++) {
189
190 work();
191
192 (void)memset(&ru, 0, sizeof(struct rusage));
193
194 ATF_REQUIRE(getrusage(RUSAGE_SELF, &ru) == 0);
195
196 if (ru.ru_utime.tv_sec == 0 && ru.ru_utime.tv_usec == 0)
197 atf_tc_fail("zero user time from getrusage(2)");
198 }
199
200 atf_tc_fail("anticipated error did not occur");
201 }
202
ATF_TP_ADD_TCS(tp)203 ATF_TP_ADD_TCS(tp)
204 {
205
206 ATF_TP_ADD_TC(tp, getrusage_err);
207 ATF_TP_ADD_TC(tp, getrusage_sig);
208 ATF_TP_ADD_TC(tp, getrusage_utime_back);
209 ATF_TP_ADD_TC(tp, getrusage_utime_zero);
210
211 return atf_no_error();
212 }
213