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