1 /* $OpenBSD: t_getrusage.c,v 1.3 2021/12/13 16:56:48 deraadt Exp $ */ 2 /* $NetBSD: t_getrusage.c,v 1.8 2018/05/09 08:45:03 mrg Exp $ */ 3 4 /*- 5 * Copyright (c) 2011 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Jukka Ruohonen. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #include "macros.h" 34 35 #include <sys/resource.h> 36 #include <sys/time.h> 37 38 #include "atf-c.h" 39 #include <stdio.h> 40 #include <errno.h> 41 #include <limits.h> 42 #include <signal.h> 43 #include <stdint.h> 44 #include <stdlib.h> 45 #include <string.h> 46 #include <fcntl.h> 47 #include <sys/socket.h> 48 #include <netinet/in.h> 49 50 static void work(void); 51 static void sighandler(int); 52 53 static const size_t maxiter = 2000; 54 55 static void 56 sighandler(int signo __unused) 57 { 58 /* Nothing. */ 59 } 60 61 static void 62 work(void) 63 { 64 size_t n = UINT16_MAX * 10; 65 66 while (n > 0) { 67 #ifdef __or1k__ 68 asm volatile("l.nop"); /* Do something. */ 69 #elif defined(__ia64__) 70 asm volatile("nop 0"); /* Do something. */ 71 #else 72 asm volatile("nop"); /* Do something. */ 73 #endif 74 n--; 75 } 76 } 77 78 ATF_TC(getrusage_err); 79 ATF_TC_HEAD(getrusage_err, tc) 80 { 81 atf_tc_set_md_var(tc, "descr", "Test error conditions"); 82 } 83 84 ATF_TC_BODY(getrusage_err, tc) 85 { 86 struct rusage ru; 87 88 errno = 0; 89 90 ATF_REQUIRE(getrusage(INT_MAX, &ru) != 0); 91 ATF_REQUIRE(errno == EINVAL); 92 93 errno = 0; 94 95 ATF_REQUIRE(getrusage(RUSAGE_SELF, (void *)0) != 0); 96 ATF_REQUIRE(errno == EFAULT); 97 } 98 99 ATF_TC(getrusage_sig); 100 ATF_TC_HEAD(getrusage_sig, tc) 101 { 102 atf_tc_set_md_var(tc, "descr", "Test signal count with getrusage(2)"); 103 } 104 105 ATF_TC_BODY(getrusage_sig, tc) 106 { 107 struct rusage ru; 108 const long n = 5; 109 int i; 110 111 /* 112 * Test that signals are recorded. 113 */ 114 ATF_REQUIRE(signal(SIGUSR1, sighandler) != SIG_ERR); 115 116 for (i = 0; i < n; i++) 117 ATF_REQUIRE(raise(SIGUSR1) == 0); 118 119 (void)memset(&ru, 0, sizeof(struct rusage)); 120 ATF_REQUIRE(getrusage(RUSAGE_SELF, &ru) == 0); 121 122 if (n != ru.ru_nsignals) 123 atf_tc_fail("getrusage(2) did not record signals"); 124 } 125 126 ATF_TC(getrusage_maxrss); 127 ATF_TC_HEAD(getrusage_maxrss, tc) 128 { 129 atf_tc_set_md_var(tc, "descr", "Test maxrss growing with getrusage(2)"); 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 #ifndef __OpenBSD__ 209 atf_tc_expect_fail("PR kern/30115"); 210 #endif 211 212 for (i = 0; i < maxiter; i++) { 213 214 (void)memset(&ru1, 0, sizeof(struct rusage)); 215 (void)memset(&ru2, 0, sizeof(struct rusage)); 216 217 work(); 218 219 ATF_REQUIRE(getrusage(RUSAGE_SELF, &ru1) == 0); 220 221 work(); 222 223 ATF_REQUIRE(getrusage(RUSAGE_SELF, &ru2) == 0); 224 225 if (timercmp(&ru2.ru_utime, &ru1.ru_utime, <) != 0) 226 atf_tc_fail("user time went backwards"); 227 } 228 229 #ifndef __OpenBSD__ 230 atf_tc_fail("anticipated error did not occur"); 231 #endif 232 } 233 234 ATF_TC(getrusage_utime_zero); 235 ATF_TC_HEAD(getrusage_utime_zero, tc) 236 { 237 atf_tc_set_md_var(tc, "descr", "Test zero utime from getrusage(2)"); 238 } 239 240 ATF_TC_BODY(getrusage_utime_zero, tc) 241 { 242 struct rusage ru; 243 size_t i; 244 245 /* 246 * Test that getrusage(2) does not return 247 * zero user time for the calling process. 248 * 249 * See also (duplicate) PR port-amd64/41734. 250 */ 251 #ifndef __OpenBSD__ 252 atf_tc_expect_fail("PR kern/30115"); 253 #endif 254 255 for (i = 0; i < maxiter; i++) { 256 257 work(); 258 #ifdef __OpenBSD__ 259 } 260 #endif 261 262 (void)memset(&ru, 0, sizeof(struct rusage)); 263 264 ATF_REQUIRE(getrusage(RUSAGE_SELF, &ru) == 0); 265 266 if (ru.ru_utime.tv_sec == 0 && ru.ru_utime.tv_usec == 0) 267 atf_tc_fail("zero user time from getrusage(2)"); 268 #ifndef __OpenBSD__ 269 } 270 271 atf_tc_fail("anticipated error did not occur"); 272 #endif 273 } 274 275 ATF_TP_ADD_TCS(tp) 276 { 277 278 ATF_TP_ADD_TC(tp, getrusage_err); 279 ATF_TP_ADD_TC(tp, getrusage_sig); 280 ATF_TP_ADD_TC(tp, getrusage_maxrss); 281 ATF_TP_ADD_TC(tp, getrusage_msgsnd); 282 ATF_TP_ADD_TC(tp, getrusage_utime_back); 283 ATF_TP_ADD_TC(tp, getrusage_utime_zero); 284 285 return atf_no_error(); 286 } 287