1 /* $NetBSD: t_getitimer.c,v 1.5 2024/12/19 20:07:16 riastradh 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_getitimer.c,v 1.5 2024/12/19 20:07:16 riastradh Exp $"); 33 34 #include <sys/time.h> 35 36 #include <atf-c.h> 37 #include <errno.h> 38 #include <limits.h> 39 #include <signal.h> 40 #include <string.h> 41 #include <unistd.h> 42 43 #include "h_macros.h" 44 45 static sig_atomic_t fired; 46 static void sighandler(int); 47 48 static void 49 sighandler(int signo) 50 { 51 52 if (signo == SIGALRM || signo == SIGVTALRM) 53 fired = 1; 54 } 55 56 ATF_TC(getitimer_empty); 57 ATF_TC_HEAD(getitimer_empty, tc) 58 { 59 atf_tc_set_md_var(tc, "descr", "getitimer(2) before setitimer(2)"); 60 } 61 62 ATF_TC_BODY(getitimer_empty, tc) 63 { 64 struct itimerval it; 65 66 /* 67 * Verify that the passed structure remains 68 * empty after calling getitimer(2) but before 69 * actually arming the timer with setitimer(2). 70 */ 71 (void)memset(&it, 0, sizeof(struct itimerval)); 72 73 ATF_REQUIRE(getitimer(ITIMER_REAL, &it) == 0); 74 75 if (it.it_value.tv_sec != 0 || it.it_value.tv_usec != 0) 76 goto fail; 77 78 ATF_REQUIRE(getitimer(ITIMER_VIRTUAL, &it) == 0); 79 80 if (it.it_value.tv_sec != 0 || it.it_value.tv_usec != 0) 81 goto fail; 82 83 ATF_REQUIRE(getitimer(ITIMER_PROF, &it) == 0); 84 85 if (it.it_value.tv_sec != 0 || it.it_value.tv_usec != 0) 86 goto fail; 87 88 return; 89 90 fail: 91 atf_tc_fail("getitimer(2) modified the timer before it was armed"); 92 } 93 94 ATF_TC(getitimer_err); 95 ATF_TC_HEAD(getitimer_err, tc) 96 { 97 atf_tc_set_md_var(tc, "descr", "Test errors from getitimer(2)"); 98 } 99 100 ATF_TC_BODY(getitimer_err, tc) 101 { 102 struct itimerval it; 103 104 errno = 0; 105 ATF_REQUIRE_ERRNO(EINVAL, getitimer(-1, &it) == -1); 106 107 errno = 0; 108 ATF_REQUIRE_ERRNO(EINVAL, getitimer(INT_MAX, &it) == -1); 109 110 errno = 0; 111 ATF_REQUIRE_ERRNO(EFAULT, getitimer(ITIMER_REAL, (void *)-1) == -1); 112 } 113 114 ATF_TC(setitimer_basic); 115 ATF_TC_HEAD(setitimer_basic, tc) 116 { 117 atf_tc_set_md_var(tc, "descr", "A basic test of setitimer(2)"); 118 } 119 120 ATF_TC_BODY(setitimer_basic, tc) 121 { 122 struct itimerval it; 123 124 it.it_value.tv_sec = 0; 125 it.it_value.tv_usec = 100; 126 127 it.it_interval.tv_sec = 0; 128 it.it_interval.tv_usec = 0; 129 130 fired = 0; 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 (!fired) 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_TC(setitimer_invalidtime); 206 ATF_TC_HEAD(setitimer_invalidtime, tc) 207 { 208 atf_tc_set_md_var(tc, "descr", "Test invalid values in setitimer(2)"); 209 } 210 211 ATF_TC_BODY(setitimer_invalidtime, tc) 212 { 213 const struct itimerval it[] = { 214 [0] = { .it_value = {-1, 0} }, 215 [1] = { .it_value = {0, -1} }, 216 [2] = { .it_value = {0, 1000001} }, 217 [3] = { .it_value = {1, 0}, .it_interval = {-1, 0} }, 218 [4] = { .it_value = {1, 0}, .it_interval = {0, -1} }, 219 [5] = { .it_value = {1, 0}, .it_interval = {0, 1000001} }, 220 }; 221 sigset_t sigs, mask; 222 unsigned i; 223 224 RL(sigemptyset(&sigs)); 225 RL(sigaddset(&sigs, SIGALRM)); 226 RL(sigprocmask(SIG_BLOCK, &sigs, &mask)); 227 228 for (i = 0; i < __arraycount(it); i++) { 229 fprintf(stderr, "case %u\n", i); 230 ATF_CHECK_ERRNO(EINVAL, 231 setitimer(ITIMER_REAL, &it[i], NULL) == -1); 232 } 233 234 /* Wait up to 2sec to make sure no timer got set anyway. */ 235 ATF_CHECK_ERRNO(EAGAIN, 236 sigtimedwait(&sigs, NULL, &(const struct timespec){2, 0}) == -1); 237 RL(sigprocmask(SIG_SETMASK, &mask, NULL)); 238 } 239 240 ATF_TP_ADD_TCS(tp) 241 { 242 243 ATF_TP_ADD_TC(tp, getitimer_empty); 244 ATF_TP_ADD_TC(tp, getitimer_err); 245 ATF_TP_ADD_TC(tp, setitimer_basic); 246 ATF_TP_ADD_TC(tp, setitimer_err); 247 ATF_TP_ADD_TC(tp, setitimer_old); 248 ATF_TP_ADD_TC(tp, setitimer_invalidtime); 249 250 return atf_no_error(); 251 } 252