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 ATF_TC(nanosleep_basic); 54 ATF_TC_HEAD(nanosleep_basic, tc) 55 { 56 atf_tc_set_md_var(tc, "descr", "Test that nanosleep(2) works"); 57 } 58 59 ATF_TC_BODY(nanosleep_basic, tc) 60 { 61 static const size_t maxiter = 10; 62 struct timespec ts1, ts2, tsn; 63 size_t i; 64 65 for (i = 1; i < maxiter; i++) { 66 67 tsn.tv_sec = 0; 68 tsn.tv_nsec = i; 69 70 (void)memset(&ts1, 0, sizeof(struct timespec)); 71 (void)memset(&ts2, 0, sizeof(struct timespec)); 72 73 ATF_REQUIRE(clock_gettime(CLOCK_MONOTONIC, &ts1) == 0); 74 ATF_REQUIRE(nanosleep(&tsn, NULL) == 0); 75 ATF_REQUIRE(clock_gettime(CLOCK_MONOTONIC, &ts2) == 0); 76 77 /* 78 * Verify that we slept at least one nanosecond. 79 */ 80 if (timespeccmp(&ts2, &ts1, <=) != 0) { 81 82 (void)fprintf(stderr, 83 "sleep time:: sec %llu, nsec %lu\n\t\t" 84 "ts1: sec %llu, nsec %lu\n\t\t" 85 "ts2: sec %llu, nsec %lu\n", 86 (unsigned long long)tsn.tv_sec, tsn.tv_nsec, 87 (unsigned long long)ts1.tv_sec, ts1.tv_nsec, 88 (unsigned long long)ts2.tv_sec, ts2.tv_nsec); 89 90 atf_tc_fail_nonfatal("inaccuracies in sleep time " 91 "(resolution = %lu nsec)", tsn.tv_nsec); 92 } 93 } 94 } 95 96 ATF_TC(nanosleep_err); 97 ATF_TC_HEAD(nanosleep_err, tc) 98 { 99 atf_tc_set_md_var(tc, "descr", 100 "Test errors from nanosleep(2) (PR bin/14558)"); 101 } 102 103 ATF_TC_BODY(nanosleep_err, tc) 104 { 105 struct timespec ts; 106 107 ts.tv_sec = 1; 108 ts.tv_nsec = -1; 109 errno = 0; 110 ATF_REQUIRE_ERRNO(EINVAL, nanosleep(&ts, NULL) == -1); 111 112 ts.tv_sec = 1; 113 ts.tv_nsec = 1000000000; 114 errno = 0; 115 ATF_REQUIRE_ERRNO(EINVAL, nanosleep(&ts, NULL) == -1); 116 117 ts.tv_sec = -1; 118 ts.tv_nsec = 0; 119 errno = 0; 120 ATF_REQUIRE_ERRNO(0, nanosleep(&ts, NULL) == 0); 121 122 errno = 0; 123 ATF_REQUIRE_ERRNO(EFAULT, nanosleep((void *)-1, NULL) == -1); 124 } 125 126 ATF_TC(nanosleep_sig); 127 ATF_TC_HEAD(nanosleep_sig, tc) 128 { 129 atf_tc_set_md_var(tc, "descr", "Test signal for nanosleep(2)"); 130 } 131 132 ATF_TC_BODY(nanosleep_sig, tc) 133 { 134 struct timespec tsn, tsr; 135 pid_t pid; 136 int sta; 137 138 /* 139 * Test that a signal interrupts nanosleep(2). 140 * 141 * (In which case the return value should be -1 and the 142 * second parameter should contain the unslept time.) 143 */ 144 pid = fork(); 145 146 ATF_REQUIRE(pid >= 0); 147 ATF_REQUIRE(signal(SIGINT, handler) == 0); 148 149 if (pid == 0) { 150 151 tsn.tv_sec = 10; 152 tsn.tv_nsec = 0; 153 154 tsr.tv_sec = 0; 155 tsr.tv_nsec = 0; 156 157 errno = 0; 158 159 if (nanosleep(&tsn, &tsr) != -1) 160 _exit(EXIT_FAILURE); 161 162 if (errno != EINTR) 163 _exit(EXIT_FAILURE); 164 165 if (tsr.tv_sec == 0 && tsr.tv_nsec == 0) 166 _exit(EXIT_FAILURE); 167 168 _exit(EXIT_SUCCESS); 169 } 170 171 (void)sleep(1); 172 (void)kill(pid, SIGINT); 173 (void)wait(&sta); 174 175 if (WIFEXITED(sta) == 0 || WEXITSTATUS(sta) != EXIT_SUCCESS) 176 atf_tc_fail("signal did not interrupt nanosleep(2)"); 177 } 178 179 ATF_TP_ADD_TCS(tp) 180 { 181 182 ATF_TP_ADD_TC(tp, nanosleep_basic); 183 ATF_TP_ADD_TC(tp, nanosleep_err); 184 ATF_TP_ADD_TC(tp, nanosleep_sig); 185 186 return atf_no_error(); 187 } 188