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