1 /* $NetBSD: t_nanosleep.c,v 1.4 2017/01/13 21:15:14 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_nanosleep.c,v 1.4 2017/01/13 21:15:14 christos Exp $"); 33 34 #include <sys/time.h> 35 #include <sys/wait.h> 36 37 #include <atf-c.h> 38 #include <errno.h> 39 #include <time.h> 40 #include <signal.h> 41 #include <stdio.h> 42 #include <stdlib.h> 43 #include <string.h> 44 #include <sysexits.h> 45 #include <unistd.h> 46 47 static void 48 handler(int signo __unused) 49 { 50 /* Nothing. */ 51 } 52 53 static int got_info; 54 static void 55 info_handler(int signo __unused) 56 { 57 58 got_info = 1; 59 } 60 61 62 ATF_TC(nanosleep_basic); 63 ATF_TC_HEAD(nanosleep_basic, tc) 64 { 65 atf_tc_set_md_var(tc, "descr", "Test that nanosleep(2) works"); 66 } 67 68 ATF_TC_BODY(nanosleep_basic, tc) 69 { 70 static const size_t maxiter = 10; 71 struct timespec ts1, ts2, tsn; 72 size_t i; 73 74 for (i = 1; i < maxiter; i++) { 75 76 tsn.tv_sec = 0; 77 tsn.tv_nsec = i; 78 79 (void)memset(&ts1, 0, sizeof(struct timespec)); 80 (void)memset(&ts2, 0, sizeof(struct timespec)); 81 82 ATF_REQUIRE(clock_gettime(CLOCK_MONOTONIC, &ts1) == 0); 83 ATF_REQUIRE(nanosleep(&tsn, NULL) == 0); 84 ATF_REQUIRE(clock_gettime(CLOCK_MONOTONIC, &ts2) == 0); 85 86 /* 87 * Verify that we slept at least one nanosecond. 88 */ 89 if (timespeccmp(&ts2, &ts1, <=) != 0) { 90 91 (void)fprintf(stderr, 92 "sleep time:: sec %llu, nsec %lu\n\t\t" 93 "ts1: sec %llu, nsec %lu\n\t\t" 94 "ts2: sec %llu, nsec %lu\n", 95 (unsigned long long)tsn.tv_sec, tsn.tv_nsec, 96 (unsigned long long)ts1.tv_sec, ts1.tv_nsec, 97 (unsigned long long)ts2.tv_sec, ts2.tv_nsec); 98 99 atf_tc_fail_nonfatal("inaccuracies in sleep time " 100 "(resolution = %lu nsec)", tsn.tv_nsec); 101 } 102 } 103 } 104 105 ATF_TC(nanosleep_err); 106 ATF_TC_HEAD(nanosleep_err, tc) 107 { 108 atf_tc_set_md_var(tc, "descr", 109 "Test errors from nanosleep(2) (PR bin/14558)"); 110 } 111 112 ATF_TC_BODY(nanosleep_err, tc) 113 { 114 struct timespec ts; 115 116 ts.tv_sec = 1; 117 ts.tv_nsec = -1; 118 errno = 0; 119 ATF_REQUIRE_ERRNO(EINVAL, nanosleep(&ts, NULL) == -1); 120 121 ts.tv_sec = 1; 122 ts.tv_nsec = 1000000000; 123 errno = 0; 124 ATF_REQUIRE_ERRNO(EINVAL, nanosleep(&ts, NULL) == -1); 125 126 ts.tv_sec = -1; 127 ts.tv_nsec = 0; 128 errno = 0; 129 ATF_REQUIRE_ERRNO(0, nanosleep(&ts, NULL) == 0); 130 131 errno = 0; 132 ATF_REQUIRE_ERRNO(EFAULT, nanosleep((void *)-1, NULL) == -1); 133 } 134 135 ATF_TC(nanosleep_sig); 136 ATF_TC_HEAD(nanosleep_sig, tc) 137 { 138 atf_tc_set_md_var(tc, "descr", "Test signal for nanosleep(2)"); 139 } 140 141 ATF_TC_BODY(nanosleep_sig, tc) 142 { 143 struct timespec tsn, tsr; 144 pid_t pid; 145 int sta; 146 147 /* 148 * Test that a signal interrupts nanosleep(2). 149 * 150 * (In which case the return value should be -1 and the 151 * second parameter should contain the unslept time.) 152 */ 153 pid = fork(); 154 155 ATF_REQUIRE(pid >= 0); 156 ATF_REQUIRE(signal(SIGINT, handler) == 0); 157 158 if (pid == 0) { 159 160 tsn.tv_sec = 10; 161 tsn.tv_nsec = 0; 162 163 tsr.tv_sec = 0; 164 tsr.tv_nsec = 0; 165 166 errno = 0; 167 168 if (nanosleep(&tsn, &tsr) != -1) 169 _exit(EXIT_FAILURE); 170 171 if (errno != EINTR) 172 _exit(EXIT_FAILURE); 173 174 if (tsr.tv_sec == 0 && tsr.tv_nsec == 0) 175 _exit(EXIT_FAILURE); 176 177 _exit(EXIT_SUCCESS); 178 } 179 180 (void)sleep(1); 181 (void)kill(pid, SIGINT); 182 (void)wait(&sta); 183 184 if (WIFEXITED(sta) == 0 || WEXITSTATUS(sta) != EXIT_SUCCESS) 185 atf_tc_fail("signal did not interrupt nanosleep(2)"); 186 } 187 188 ATF_TC(nanosleep_eintr); 189 ATF_TC_HEAD(nanosleep_eintr, tc) 190 { 191 atf_tc_set_md_var(tc, "descr", "Test [EINTR] for nanosleep(2)"); 192 atf_tc_set_md_var(tc, "timeout", "7"); 193 } 194 195 ATF_TC_BODY(nanosleep_eintr, tc) 196 { 197 struct sigaction act; 198 struct timespec tso, ts; 199 pid_t pid; 200 int sta; 201 202 /* 203 * Test that [EINTR] properly handles rmtp for nanosleep(2). 204 */ 205 pid = fork(); 206 207 ATF_REQUIRE(pid >= 0); 208 209 got_info = 0; 210 211 if (pid == 0) { 212 act.sa_handler = info_handler; 213 sigemptyset(&act.sa_mask); 214 act.sa_flags = 0; /* Don't allow restart. */ 215 ATF_REQUIRE(sigaction(SIGINFO, &act, NULL) == 0); 216 217 tso.tv_sec = 5; 218 tso.tv_nsec = 0; 219 220 ts.tv_sec = tso.tv_sec; 221 ts.tv_nsec = tso.tv_nsec; 222 223 errno = 0; 224 while (nanosleep(&ts, &ts) != 0) { 225 ATF_REQUIRE_MSG(timespeccmp(&ts, &tso, <=), 226 "errno=%d ts=%0.9f should be <= last tso=%0.9f\n", 227 errno, 228 ts.tv_sec + ts.tv_nsec / 1e9, 229 tso.tv_sec + tso.tv_nsec / 1e9); 230 if (errno == EINTR && got_info == 1) { 231 got_info = 0; 232 errno = 0; 233 tso.tv_sec = ts.tv_sec; 234 tso.tv_nsec = ts.tv_nsec; 235 continue; 236 } 237 _exit(EXIT_FAILURE); 238 } 239 240 if (errno != 0) 241 _exit(EXIT_FAILURE); 242 243 _exit(EXIT_SUCCESS); 244 } 245 246 /* Flood the process with SIGINFO until it exits. */ 247 do { 248 for (int i = 0; i < 10; i++) 249 ATF_REQUIRE(kill(pid, SIGINFO) == 0); 250 ATF_REQUIRE(usleep(10000) == 0); 251 } while (waitpid(pid, &sta, WNOHANG) == 0); 252 253 ATF_REQUIRE(WIFEXITED(sta) == 1); 254 255 if (WEXITSTATUS(sta) != EXIT_SUCCESS) 256 atf_tc_fail("nanosleep(2) handled rtmp incorrectly"); 257 } 258 259 ATF_TP_ADD_TCS(tp) 260 { 261 262 ATF_TP_ADD_TC(tp, nanosleep_basic); 263 ATF_TP_ADD_TC(tp, nanosleep_err); 264 ATF_TP_ADD_TC(tp, nanosleep_sig); 265 ATF_TP_ADD_TC(tp, nanosleep_eintr); 266 267 return atf_no_error(); 268 } 269