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 #ifdef __FreeBSD__ 56 #define asm __asm 57 #endif 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 #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); 77 ATF_TC_HEAD(getrusage_err, tc) 78 { 79 atf_tc_set_md_var(tc, "descr", "Test error conditions"); 80 } 81 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); 98 ATF_TC_HEAD(getrusage_sig, tc) 99 { 100 atf_tc_set_md_var(tc, "descr", "Test signal count with getrusage(2)"); 101 } 102 103 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); 125 ATF_TC_HEAD(getrusage_utime_back, tc) 126 { 127 atf_tc_set_md_var(tc, "descr", "Test bogus values from getrusage(2)"); 128 } 129 130 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); 165 ATF_TC_HEAD(getrusage_utime_zero, tc) 166 { 167 atf_tc_set_md_var(tc, "descr", "Test zero utime from getrusage(2)"); 168 } 169 170 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 } 202 203 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