1 /* $OpenBSD: t_getitimer.c,v 1.2 2019/11/22 15:59:53 bluhm Exp $ */ 2 /* $NetBSD: t_getitimer.c,v 1.3 2019/07/13 12:44:02 gson 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/cdefs.h> 36 __RCSID("$NetBSD: t_getitimer.c,v 1.2 2012/03/22 18:20:46 christos Exp $"); 37 38 #include <sys/time.h> 39 40 #include "atf-c.h" 41 #include <errno.h> 42 #include <limits.h> 43 #include <signal.h> 44 #include <string.h> 45 #include <unistd.h> 46 47 static bool fail; 48 static void sighandler(int); 49 50 static void 51 sighandler(int signo) 52 { 53 54 if (signo == SIGALRM || signo == SIGVTALRM) 55 fail = false; 56 } 57 58 ATF_TC(getitimer_empty); 59 ATF_TC_HEAD(getitimer_empty, tc) 60 { 61 atf_tc_set_md_var(tc, "descr", "getitimer(2) before setitimer(2)"); 62 } 63 64 ATF_TC_BODY(getitimer_empty, tc) 65 { 66 struct itimerval it; 67 68 /* 69 * Verify that the passed structure remains 70 * empty after calling getitimer(2) but before 71 * actually arming the timer with setitimer(2). 72 */ 73 (void)memset(&it, 0, sizeof(struct itimerval)); 74 75 ATF_REQUIRE(getitimer(ITIMER_REAL, &it) == 0); 76 77 if (it.it_value.tv_sec != 0 || it.it_value.tv_usec != 0) 78 goto fail; 79 80 ATF_REQUIRE(getitimer(ITIMER_VIRTUAL, &it) == 0); 81 82 if (it.it_value.tv_sec != 0 || it.it_value.tv_usec != 0) 83 goto fail; 84 85 ATF_REQUIRE(getitimer(ITIMER_PROF, &it) == 0); 86 87 if (it.it_value.tv_sec != 0 || it.it_value.tv_usec != 0) 88 goto fail; 89 90 return; 91 92 fail: 93 atf_tc_fail("getitimer(2) modfied the timer before it was armed"); 94 } 95 96 ATF_TC(getitimer_err); 97 ATF_TC_HEAD(getitimer_err, tc) 98 { 99 atf_tc_set_md_var(tc, "descr", "Test errors from getitimer(2)"); 100 } 101 102 ATF_TC_BODY(getitimer_err, tc) 103 { 104 struct itimerval it; 105 106 errno = 0; 107 ATF_REQUIRE_ERRNO(EINVAL, getitimer(-1, &it) == -1); 108 109 errno = 0; 110 ATF_REQUIRE_ERRNO(EINVAL, getitimer(INT_MAX, &it) == -1); 111 112 errno = 0; 113 ATF_REQUIRE_ERRNO(EFAULT, getitimer(ITIMER_REAL, (void *)-1) == -1); 114 } 115 116 ATF_TC(setitimer_basic); 117 ATF_TC_HEAD(setitimer_basic, tc) 118 { 119 atf_tc_set_md_var(tc, "descr", "A basic test of setitimer(2)"); 120 } 121 122 ATF_TC_BODY(setitimer_basic, tc) 123 { 124 struct itimerval it; 125 126 it.it_value.tv_sec = 0; 127 it.it_value.tv_usec = 100; 128 129 it.it_interval.tv_sec = 0; 130 it.it_interval.tv_usec = 0; 131 132 fail = true; 133 134 ATF_REQUIRE(signal(SIGALRM, sighandler) != SIG_ERR); 135 ATF_REQUIRE(setitimer(ITIMER_REAL, &it, NULL) == 0); 136 137 /* 138 * Although the interaction between 139 * setitimer(2) and sleep(3) can be 140 * unspecified, it is assumed that one 141 * second suspension will be enough for 142 * the timer to fire. 143 */ 144 (void)sleep(1); 145 146 if (fail != false) 147 atf_tc_fail("timer did not fire"); 148 } 149 150 ATF_TC(setitimer_err); 151 ATF_TC_HEAD(setitimer_err, tc) 152 { 153 atf_tc_set_md_var(tc, "descr", "Test errors from setitimer(2)" 154 " (PR standards/44927)"); 155 } 156 157 ATF_TC_BODY(setitimer_err, tc) 158 { 159 struct itimerval it, ot; 160 161 errno = 0; 162 ATF_REQUIRE_ERRNO(EINVAL, setitimer(-1, &it, &ot) == -1); 163 164 errno = 0; 165 ATF_REQUIRE_ERRNO(EINVAL, setitimer(INT_MAX, &it, &ot) == -1); 166 167 errno = 0; 168 ATF_REQUIRE_ERRNO(EFAULT, setitimer(ITIMER_REAL,(void*)-1, &ot) == -1); 169 } 170 171 ATF_TC(setitimer_old); 172 ATF_TC_HEAD(setitimer_old, tc) 173 { 174 atf_tc_set_md_var(tc, "descr", "Test old values from setitimer(2)"); 175 } 176 177 ATF_TC_BODY(setitimer_old, tc) 178 { 179 struct itimerval it, ot; 180 181 /* 182 * Make two calls; the second one should store the old 183 * timer value which should be the same as that set in 184 * the first call, or slightly less due to time passing 185 * between the two calls. 186 */ 187 it.it_value.tv_sec = 4; 188 it.it_value.tv_usec = 999999; 189 190 it.it_interval.tv_sec = 0; 191 it.it_interval.tv_usec = 0; 192 193 ATF_REQUIRE(setitimer(ITIMER_REAL, &it, &ot) == 0); 194 195 it.it_value.tv_sec = 2; 196 it.it_value.tv_usec = 1; 197 198 it.it_interval.tv_sec = 0; 199 it.it_interval.tv_usec = 0; 200 201 ATF_REQUIRE(setitimer(ITIMER_REAL, &it, &ot) == 0); 202 203 /* Check seconds only as microseconds may have decremented */ 204 if (ot.it_value.tv_sec != 4) 205 atf_tc_fail("setitimer(2) did not store old values"); 206 } 207 208 ATF_TP_ADD_TCS(tp) 209 { 210 211 ATF_TP_ADD_TC(tp, getitimer_empty); 212 ATF_TP_ADD_TC(tp, getitimer_err); 213 ATF_TP_ADD_TC(tp, setitimer_basic); 214 ATF_TP_ADD_TC(tp, setitimer_err); 215 ATF_TP_ADD_TC(tp, setitimer_old); 216 217 return atf_no_error(); 218 } 219