1 /* $NetBSD: t_getrusage.c,v 1.9 2024/04/12 07:16:50 gson 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 1.9 2024/04/12 07:16:50 gson Exp $"); 33 34 #include <sys/resource.h> 35 #include <sys/time.h> 36 37 #include <atf-c.h> 38 #include <stdio.h> 39 #include <errno.h> 40 #include <limits.h> 41 #include <signal.h> 42 #include <stdint.h> 43 #include <stdlib.h> 44 #include <string.h> 45 #include <fcntl.h> 46 #include <sys/socket.h> 47 #include <netinet/in.h> 48 49 static void work(void); 50 static void sighandler(int); 51 52 static const size_t maxiter = 2000; 53 54 static void 55 sighandler(int signo __unused) 56 { 57 /* Nothing. */ 58 } 59 60 static void 61 work(void) 62 { 63 size_t n = UINT16_MAX * 10; 64 65 while (n > 0) { 66 #ifdef __or1k__ 67 asm volatile("l.nop"); /* Do something. */ 68 #elif defined(__ia64__) 69 asm volatile("nop 0"); /* Do something. */ 70 #else 71 asm volatile("nop"); /* Do something. */ 72 #endif 73 n--; 74 } 75 } 76 77 ATF_TC(getrusage_err); 78 ATF_TC_HEAD(getrusage_err, tc) 79 { 80 atf_tc_set_md_var(tc, "descr", "Test error conditions"); 81 } 82 83 ATF_TC_BODY(getrusage_err, tc) 84 { 85 struct rusage ru; 86 87 errno = 0; 88 89 ATF_REQUIRE(getrusage(INT_MAX, &ru) != 0); 90 ATF_REQUIRE(errno == EINVAL); 91 92 errno = 0; 93 94 ATF_REQUIRE(getrusage(RUSAGE_SELF, (void *)0) != 0); 95 ATF_REQUIRE(errno == EFAULT); 96 } 97 98 ATF_TC(getrusage_sig); 99 ATF_TC_HEAD(getrusage_sig, tc) 100 { 101 atf_tc_set_md_var(tc, "descr", "Test signal count with getrusage(2)"); 102 } 103 104 ATF_TC_BODY(getrusage_sig, tc) 105 { 106 struct rusage ru; 107 const long n = 5; 108 int i; 109 110 /* 111 * Test that signals are recorded. 112 */ 113 ATF_REQUIRE(signal(SIGUSR1, sighandler) != SIG_ERR); 114 115 for (i = 0; i < n; i++) 116 ATF_REQUIRE(raise(SIGUSR1) == 0); 117 118 (void)memset(&ru, 0, sizeof(struct rusage)); 119 ATF_REQUIRE(getrusage(RUSAGE_SELF, &ru) == 0); 120 121 if (n != ru.ru_nsignals) 122 atf_tc_fail("getrusage(2) did not record signals"); 123 } 124 125 ATF_TC(getrusage_maxrss); 126 ATF_TC_HEAD(getrusage_maxrss, tc) 127 { 128 atf_tc_set_md_var(tc, "descr", "Test maxrss growing with getrusage(2)"); 129 atf_tc_set_md_var(tc, "require.memory", "64M"); 130 } 131 132 ATF_TC_BODY(getrusage_maxrss, tc) 133 { 134 struct rusage ru; 135 long maxrss; 136 int i, fd; 137 138 #define DUMP_FILE "dump" 139 140 fd = open(DUMP_FILE, O_WRONLY|O_CREAT|O_TRUNC, 0222); 141 ATF_REQUIRE(fd != -1); 142 143 (void)memset(&ru, 0, sizeof(struct rusage)); 144 ATF_REQUIRE(getrusage(RUSAGE_SELF, &ru) == 0); 145 maxrss = ru.ru_maxrss; 146 147 #define CHUNK (1024 * 1024) 148 for (i = 0; i < 40; i++) { 149 void *p = malloc(CHUNK); 150 memset(p, 0, CHUNK); 151 write(fd, p, CHUNK); 152 } 153 close(fd); 154 unlink(DUMP_FILE); 155 156 ATF_REQUIRE(getrusage(RUSAGE_SELF, &ru) == 0); 157 ATF_REQUIRE_MSG(maxrss < ru.ru_maxrss, 158 "maxrss: %ld, ru.ru_maxrss: %ld", maxrss, ru.ru_maxrss); 159 } 160 161 ATF_TC(getrusage_msgsnd); 162 ATF_TC_HEAD(getrusage_msgsnd, tc) 163 { 164 atf_tc_set_md_var(tc, "descr", "Test send growing with getrusage(2)"); 165 } 166 167 ATF_TC_BODY(getrusage_msgsnd, tc) 168 { 169 struct rusage ru; 170 long msgsnd; 171 int s, i; 172 struct sockaddr_in sin; 173 174 ATF_REQUIRE(getrusage(RUSAGE_SELF, &ru) == 0); 175 msgsnd = ru.ru_msgsnd; 176 177 s = socket(AF_INET, SOCK_DGRAM, 0); 178 ATF_REQUIRE(s >= 0); 179 memset(&sin, 0, sizeof(sin)); 180 sin.sin_family = AF_INET; 181 sin.sin_len = sizeof(sin); 182 sin.sin_addr.s_addr = ntohl(INADDR_LOOPBACK); 183 sin.sin_port = htons(3333); 184 185 for (i = 0; i < 10; i++) 186 ATF_REQUIRE(sendto(s, &sin, sizeof(sin), 0, (void *)&sin, 187 (socklen_t)sizeof(sin)) != -1); 188 189 ATF_REQUIRE(getrusage(RUSAGE_SELF, &ru) == 0); 190 ATF_REQUIRE(msgsnd + 10 == ru.ru_msgsnd); 191 close(s); 192 } 193 194 ATF_TC(getrusage_utime_back); 195 ATF_TC_HEAD(getrusage_utime_back, tc) 196 { 197 atf_tc_set_md_var(tc, "descr", "Test bogus values from getrusage(2)"); 198 } 199 200 ATF_TC_BODY(getrusage_utime_back, tc) 201 { 202 struct rusage ru1, ru2; 203 size_t i; 204 205 /* 206 * Test that two consecutive calls are sane. 207 */ 208 atf_tc_expect_fail("PR kern/30115"); 209 210 for (i = 0; i < maxiter; i++) { 211 212 (void)memset(&ru1, 0, sizeof(struct rusage)); 213 (void)memset(&ru2, 0, sizeof(struct rusage)); 214 215 work(); 216 217 ATF_REQUIRE(getrusage(RUSAGE_SELF, &ru1) == 0); 218 219 work(); 220 221 ATF_REQUIRE(getrusage(RUSAGE_SELF, &ru2) == 0); 222 223 if (timercmp(&ru2.ru_utime, &ru1.ru_utime, <) != 0) 224 atf_tc_fail("user time went backwards"); 225 } 226 227 atf_tc_fail("anticipated error did not occur"); 228 } 229 230 ATF_TC(getrusage_utime_zero); 231 ATF_TC_HEAD(getrusage_utime_zero, tc) 232 { 233 atf_tc_set_md_var(tc, "descr", "Test zero utime from getrusage(2)"); 234 } 235 236 ATF_TC_BODY(getrusage_utime_zero, tc) 237 { 238 struct rusage ru; 239 size_t i; 240 241 /* 242 * Test that getrusage(2) does not return 243 * zero user time for the calling process. 244 * 245 * See also (duplicate) PR port-amd64/41734. 246 */ 247 atf_tc_expect_fail("PR kern/30115"); 248 249 for (i = 0; i < maxiter; i++) { 250 251 work(); 252 253 (void)memset(&ru, 0, sizeof(struct rusage)); 254 255 ATF_REQUIRE(getrusage(RUSAGE_SELF, &ru) == 0); 256 257 if (ru.ru_utime.tv_sec == 0 && ru.ru_utime.tv_usec == 0) 258 atf_tc_fail("zero user time from getrusage(2)"); 259 } 260 261 atf_tc_fail("anticipated error did not occur"); 262 } 263 264 ATF_TP_ADD_TCS(tp) 265 { 266 267 ATF_TP_ADD_TC(tp, getrusage_err); 268 ATF_TP_ADD_TC(tp, getrusage_sig); 269 ATF_TP_ADD_TC(tp, getrusage_maxrss); 270 ATF_TP_ADD_TC(tp, getrusage_msgsnd); 271 ATF_TP_ADD_TC(tp, getrusage_utime_back); 272 ATF_TP_ADD_TC(tp, getrusage_utime_zero); 273 274 return atf_no_error(); 275 } 276
Indexes created Sat Sep 20 22:09:52 GMT 2025