1 /* $OpenBSD: t_getitimer.c,v 1.4 2021/12/13 16:56:48 deraadt 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/time.h> 36 37 #include "atf-c.h" 38 #include <errno.h> 39 #include <limits.h> 40 #include <signal.h> 41 #include <string.h> 42 #include <unistd.h> 43 44 static bool fail; 45 static void sighandler(int); 46 47 static void 48 sighandler(int signo) 49 { 50 51 if (signo == SIGALRM || signo == SIGVTALRM) 52 fail = false; 53 } 54 55 ATF_TC(getitimer_empty); 56 ATF_TC_HEAD(getitimer_empty, tc) 57 { 58 atf_tc_set_md_var(tc, "descr", "getitimer(2) before setitimer(2)"); 59 } 60 61 ATF_TC_BODY(getitimer_empty, tc) 62 { 63 struct itimerval it; 64 65 /* 66 * Verify that the passed structure remains 67 * empty after calling getitimer(2) but before 68 * actually arming the timer with setitimer(2). 69 */ 70 (void)memset(&it, 0, sizeof(struct itimerval)); 71 72 ATF_REQUIRE(getitimer(ITIMER_REAL, &it) == 0); 73 74 if (it.it_value.tv_sec != 0 || it.it_value.tv_usec != 0) 75 goto fail; 76 77 ATF_REQUIRE(getitimer(ITIMER_VIRTUAL, &it) == 0); 78 79 if (it.it_value.tv_sec != 0 || it.it_value.tv_usec != 0) 80 goto fail; 81 82 ATF_REQUIRE(getitimer(ITIMER_PROF, &it) == 0); 83 84 if (it.it_value.tv_sec != 0 || it.it_value.tv_usec != 0) 85 goto fail; 86 87 return; 88 89 fail: 90 atf_tc_fail("getitimer(2) modfied the timer before it was armed"); 91 } 92 93 ATF_TC(getitimer_err); 94 ATF_TC_HEAD(getitimer_err, tc) 95 { 96 atf_tc_set_md_var(tc, "descr", "Test errors from getitimer(2)"); 97 } 98 99 ATF_TC_BODY(getitimer_err, tc) 100 { 101 struct itimerval it; 102 103 errno = 0; 104 ATF_REQUIRE_ERRNO(EINVAL, getitimer(-1, &it) == -1); 105 106 errno = 0; 107 ATF_REQUIRE_ERRNO(EINVAL, getitimer(INT_MAX, &it) == -1); 108 109 errno = 0; 110 ATF_REQUIRE_ERRNO(EFAULT, getitimer(ITIMER_REAL, (void *)-1) == -1); 111 } 112 113 ATF_TC(setitimer_basic); 114 ATF_TC_HEAD(setitimer_basic, tc) 115 { 116 atf_tc_set_md_var(tc, "descr", "A basic test of setitimer(2)"); 117 } 118 119 ATF_TC_BODY(setitimer_basic, tc) 120 { 121 struct itimerval it; 122 123 it.it_value.tv_sec = 0; 124 it.it_value.tv_usec = 100; 125 126 it.it_interval.tv_sec = 0; 127 it.it_interval.tv_usec = 0; 128 129 fail = true; 130 131 ATF_REQUIRE(signal(SIGALRM, sighandler) != SIG_ERR); 132 ATF_REQUIRE(setitimer(ITIMER_REAL, &it, NULL) == 0); 133 134 /* 135 * Although the interaction between 136 * setitimer(2) and sleep(3) can be 137 * unspecified, it is assumed that one 138 * second suspension will be enough for 139 * the timer to fire. 140 */ 141 (void)sleep(1); 142 143 if (fail != false) 144 atf_tc_fail("timer did not fire"); 145 } 146 147 ATF_TC(setitimer_err); 148 ATF_TC_HEAD(setitimer_err, tc) 149 { 150 atf_tc_set_md_var(tc, "descr", "Test errors from setitimer(2)" 151 " (PR standards/44927)"); 152 } 153 154 ATF_TC_BODY(setitimer_err, tc) 155 { 156 struct itimerval it, ot; 157 158 errno = 0; 159 ATF_REQUIRE_ERRNO(EINVAL, setitimer(-1, &it, &ot) == -1); 160 161 errno = 0; 162 ATF_REQUIRE_ERRNO(EINVAL, setitimer(INT_MAX, &it, &ot) == -1); 163 164 errno = 0; 165 ATF_REQUIRE_ERRNO(EFAULT, setitimer(ITIMER_REAL,(void*)-1, &ot) == -1); 166 } 167 168 ATF_TC(setitimer_old); 169 ATF_TC_HEAD(setitimer_old, tc) 170 { 171 atf_tc_set_md_var(tc, "descr", "Test old values from setitimer(2)"); 172 } 173 174 ATF_TC_BODY(setitimer_old, tc) 175 { 176 struct itimerval it, ot; 177 178 /* 179 * Make two calls; the second one should store the old 180 * timer value which should be the same as that set in 181 * the first call, or slightly less due to time passing 182 * between the two calls. 183 */ 184 it.it_value.tv_sec = 4; 185 it.it_value.tv_usec = 999999; 186 187 it.it_interval.tv_sec = 0; 188 it.it_interval.tv_usec = 0; 189 190 ATF_REQUIRE(setitimer(ITIMER_REAL, &it, &ot) == 0); 191 192 it.it_value.tv_sec = 2; 193 it.it_value.tv_usec = 1; 194 195 it.it_interval.tv_sec = 0; 196 it.it_interval.tv_usec = 0; 197 198 ATF_REQUIRE(setitimer(ITIMER_REAL, &it, &ot) == 0); 199 200 /* Check seconds only as microseconds may have decremented */ 201 if (ot.it_value.tv_sec != 4) 202 atf_tc_fail("setitimer(2) did not store old values"); 203 } 204 205 ATF_TP_ADD_TCS(tp) 206 { 207 208 ATF_TP_ADD_TC(tp, getitimer_empty); 209 ATF_TP_ADD_TC(tp, getitimer_err); 210 ATF_TP_ADD_TC(tp, setitimer_basic); 211 ATF_TP_ADD_TC(tp, setitimer_err); 212 ATF_TP_ADD_TC(tp, setitimer_old); 213 214 return atf_no_error(); 215 } 216