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
sighandler(int signo)49 sighandler(int signo)
50 {
51
52 if (signo == SIGALRM || signo == SIGVTALRM)
53 fired = 1;
54 }
55
56 ATF_TC(getitimer_empty);
ATF_TC_HEAD(getitimer_empty,tc)57 ATF_TC_HEAD(getitimer_empty, tc)
58 {
59 atf_tc_set_md_var(tc, "descr", "getitimer(2) before setitimer(2)");
60 }
61
ATF_TC_BODY(getitimer_empty,tc)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);
ATF_TC_HEAD(getitimer_err,tc)95 ATF_TC_HEAD(getitimer_err, tc)
96 {
97 atf_tc_set_md_var(tc, "descr", "Test errors from getitimer(2)");
98 }
99
ATF_TC_BODY(getitimer_err,tc)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);
ATF_TC_HEAD(setitimer_basic,tc)115 ATF_TC_HEAD(setitimer_basic, tc)
116 {
117 atf_tc_set_md_var(tc, "descr", "A basic test of setitimer(2)");
118 }
119
ATF_TC_BODY(setitimer_basic,tc)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);
ATF_TC_HEAD(setitimer_err,tc)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
ATF_TC_BODY(setitimer_err,tc)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);
ATF_TC_HEAD(setitimer_old,tc)169 ATF_TC_HEAD(setitimer_old, tc)
170 {
171 atf_tc_set_md_var(tc, "descr", "Test old values from setitimer(2)");
172 }
173
ATF_TC_BODY(setitimer_old,tc)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);
ATF_TC_HEAD(setitimer_invalidtime,tc)206 ATF_TC_HEAD(setitimer_invalidtime, tc)
207 {
208 atf_tc_set_md_var(tc, "descr", "Test invalid values in setitimer(2)");
209 }
210
ATF_TC_BODY(setitimer_invalidtime,tc)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
ATF_TP_ADD_TCS(tp)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