1*49a6e16fSderaadt /* $OpenBSD: t_getitimer.c,v 1.4 2021/12/13 16:56:48 deraadt Exp $ */
250b44919Sbluhm /* $NetBSD: t_getitimer.c,v 1.3 2019/07/13 12:44:02 gson Exp $ */
3a545a52cSbluhm
4a545a52cSbluhm /*-
5a545a52cSbluhm * Copyright (c) 2011 The NetBSD Foundation, Inc.
6a545a52cSbluhm * All rights reserved.
7a545a52cSbluhm *
8a545a52cSbluhm * This code is derived from software contributed to The NetBSD Foundation
9a545a52cSbluhm * by Jukka Ruohonen.
10a545a52cSbluhm *
11a545a52cSbluhm * Redistribution and use in source and binary forms, with or without
12a545a52cSbluhm * modification, are permitted provided that the following conditions
13a545a52cSbluhm * are met:
14a545a52cSbluhm * 1. Redistributions of source code must retain the above copyright
15a545a52cSbluhm * notice, this list of conditions and the following disclaimer.
16a545a52cSbluhm * 2. Redistributions in binary form must reproduce the above copyright
17a545a52cSbluhm * notice, this list of conditions and the following disclaimer in the
18a545a52cSbluhm * documentation and/or other materials provided with the distribution.
19a545a52cSbluhm *
20a545a52cSbluhm * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21a545a52cSbluhm * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22a545a52cSbluhm * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23a545a52cSbluhm * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24a545a52cSbluhm * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25a545a52cSbluhm * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26a545a52cSbluhm * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27a545a52cSbluhm * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28a545a52cSbluhm * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29a545a52cSbluhm * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30a545a52cSbluhm * POSSIBILITY OF SUCH DAMAGE.
31a545a52cSbluhm */
32a545a52cSbluhm
33a545a52cSbluhm #include "macros.h"
34a545a52cSbluhm
35a545a52cSbluhm #include <sys/time.h>
36a545a52cSbluhm
37a545a52cSbluhm #include "atf-c.h"
38a545a52cSbluhm #include <errno.h>
39a545a52cSbluhm #include <limits.h>
40a545a52cSbluhm #include <signal.h>
41a545a52cSbluhm #include <string.h>
42a545a52cSbluhm #include <unistd.h>
43a545a52cSbluhm
44a545a52cSbluhm static bool fail;
45a545a52cSbluhm static void sighandler(int);
46a545a52cSbluhm
47a545a52cSbluhm static void
sighandler(int signo)48a545a52cSbluhm sighandler(int signo)
49a545a52cSbluhm {
50a545a52cSbluhm
51a545a52cSbluhm if (signo == SIGALRM || signo == SIGVTALRM)
52a545a52cSbluhm fail = false;
53a545a52cSbluhm }
54a545a52cSbluhm
55a545a52cSbluhm ATF_TC(getitimer_empty);
ATF_TC_HEAD(getitimer_empty,tc)56a545a52cSbluhm ATF_TC_HEAD(getitimer_empty, tc)
57a545a52cSbluhm {
58a545a52cSbluhm atf_tc_set_md_var(tc, "descr", "getitimer(2) before setitimer(2)");
59a545a52cSbluhm }
60a545a52cSbluhm
ATF_TC_BODY(getitimer_empty,tc)61a545a52cSbluhm ATF_TC_BODY(getitimer_empty, tc)
62a545a52cSbluhm {
63a545a52cSbluhm struct itimerval it;
64a545a52cSbluhm
65a545a52cSbluhm /*
66a545a52cSbluhm * Verify that the passed structure remains
67a545a52cSbluhm * empty after calling getitimer(2) but before
68a545a52cSbluhm * actually arming the timer with setitimer(2).
69a545a52cSbluhm */
70a545a52cSbluhm (void)memset(&it, 0, sizeof(struct itimerval));
71a545a52cSbluhm
72a545a52cSbluhm ATF_REQUIRE(getitimer(ITIMER_REAL, &it) == 0);
73a545a52cSbluhm
74a545a52cSbluhm if (it.it_value.tv_sec != 0 || it.it_value.tv_usec != 0)
75a545a52cSbluhm goto fail;
76a545a52cSbluhm
77a545a52cSbluhm ATF_REQUIRE(getitimer(ITIMER_VIRTUAL, &it) == 0);
78a545a52cSbluhm
79a545a52cSbluhm if (it.it_value.tv_sec != 0 || it.it_value.tv_usec != 0)
80a545a52cSbluhm goto fail;
81a545a52cSbluhm
82a545a52cSbluhm ATF_REQUIRE(getitimer(ITIMER_PROF, &it) == 0);
83a545a52cSbluhm
84a545a52cSbluhm if (it.it_value.tv_sec != 0 || it.it_value.tv_usec != 0)
85a545a52cSbluhm goto fail;
86a545a52cSbluhm
87a545a52cSbluhm return;
88a545a52cSbluhm
89a545a52cSbluhm fail:
90a545a52cSbluhm atf_tc_fail("getitimer(2) modfied the timer before it was armed");
91a545a52cSbluhm }
92a545a52cSbluhm
93a545a52cSbluhm ATF_TC(getitimer_err);
ATF_TC_HEAD(getitimer_err,tc)94a545a52cSbluhm ATF_TC_HEAD(getitimer_err, tc)
95a545a52cSbluhm {
96a545a52cSbluhm atf_tc_set_md_var(tc, "descr", "Test errors from getitimer(2)");
97a545a52cSbluhm }
98a545a52cSbluhm
ATF_TC_BODY(getitimer_err,tc)99a545a52cSbluhm ATF_TC_BODY(getitimer_err, tc)
100a545a52cSbluhm {
101a545a52cSbluhm struct itimerval it;
102a545a52cSbluhm
103a545a52cSbluhm errno = 0;
104a545a52cSbluhm ATF_REQUIRE_ERRNO(EINVAL, getitimer(-1, &it) == -1);
105a545a52cSbluhm
106a545a52cSbluhm errno = 0;
107a545a52cSbluhm ATF_REQUIRE_ERRNO(EINVAL, getitimer(INT_MAX, &it) == -1);
108a545a52cSbluhm
109a545a52cSbluhm errno = 0;
110a545a52cSbluhm ATF_REQUIRE_ERRNO(EFAULT, getitimer(ITIMER_REAL, (void *)-1) == -1);
111a545a52cSbluhm }
112a545a52cSbluhm
113a545a52cSbluhm ATF_TC(setitimer_basic);
ATF_TC_HEAD(setitimer_basic,tc)114a545a52cSbluhm ATF_TC_HEAD(setitimer_basic, tc)
115a545a52cSbluhm {
116a545a52cSbluhm atf_tc_set_md_var(tc, "descr", "A basic test of setitimer(2)");
117a545a52cSbluhm }
118a545a52cSbluhm
ATF_TC_BODY(setitimer_basic,tc)119a545a52cSbluhm ATF_TC_BODY(setitimer_basic, tc)
120a545a52cSbluhm {
121a545a52cSbluhm struct itimerval it;
122a545a52cSbluhm
123a545a52cSbluhm it.it_value.tv_sec = 0;
124a545a52cSbluhm it.it_value.tv_usec = 100;
125a545a52cSbluhm
126a545a52cSbluhm it.it_interval.tv_sec = 0;
127a545a52cSbluhm it.it_interval.tv_usec = 0;
128a545a52cSbluhm
129a545a52cSbluhm fail = true;
130a545a52cSbluhm
131a545a52cSbluhm ATF_REQUIRE(signal(SIGALRM, sighandler) != SIG_ERR);
132a545a52cSbluhm ATF_REQUIRE(setitimer(ITIMER_REAL, &it, NULL) == 0);
133a545a52cSbluhm
134a545a52cSbluhm /*
135a545a52cSbluhm * Although the interaction between
136a545a52cSbluhm * setitimer(2) and sleep(3) can be
137a545a52cSbluhm * unspecified, it is assumed that one
138a545a52cSbluhm * second suspension will be enough for
139a545a52cSbluhm * the timer to fire.
140a545a52cSbluhm */
141a545a52cSbluhm (void)sleep(1);
142a545a52cSbluhm
143a545a52cSbluhm if (fail != false)
144a545a52cSbluhm atf_tc_fail("timer did not fire");
145a545a52cSbluhm }
146a545a52cSbluhm
147a545a52cSbluhm ATF_TC(setitimer_err);
ATF_TC_HEAD(setitimer_err,tc)148a545a52cSbluhm ATF_TC_HEAD(setitimer_err, tc)
149a545a52cSbluhm {
150a545a52cSbluhm atf_tc_set_md_var(tc, "descr", "Test errors from setitimer(2)"
151a545a52cSbluhm " (PR standards/44927)");
152a545a52cSbluhm }
153a545a52cSbluhm
ATF_TC_BODY(setitimer_err,tc)154a545a52cSbluhm ATF_TC_BODY(setitimer_err, tc)
155a545a52cSbluhm {
156a545a52cSbluhm struct itimerval it, ot;
157a545a52cSbluhm
158a545a52cSbluhm errno = 0;
159a545a52cSbluhm ATF_REQUIRE_ERRNO(EINVAL, setitimer(-1, &it, &ot) == -1);
160a545a52cSbluhm
161a545a52cSbluhm errno = 0;
162a545a52cSbluhm ATF_REQUIRE_ERRNO(EINVAL, setitimer(INT_MAX, &it, &ot) == -1);
163a545a52cSbluhm
164a545a52cSbluhm errno = 0;
165a545a52cSbluhm ATF_REQUIRE_ERRNO(EFAULT, setitimer(ITIMER_REAL,(void*)-1, &ot) == -1);
166a545a52cSbluhm }
167a545a52cSbluhm
168a545a52cSbluhm ATF_TC(setitimer_old);
ATF_TC_HEAD(setitimer_old,tc)169a545a52cSbluhm ATF_TC_HEAD(setitimer_old, tc)
170a545a52cSbluhm {
171a545a52cSbluhm atf_tc_set_md_var(tc, "descr", "Test old values from setitimer(2)");
172a545a52cSbluhm }
173a545a52cSbluhm
ATF_TC_BODY(setitimer_old,tc)174a545a52cSbluhm ATF_TC_BODY(setitimer_old, tc)
175a545a52cSbluhm {
176a545a52cSbluhm struct itimerval it, ot;
177a545a52cSbluhm
178a545a52cSbluhm /*
17950b44919Sbluhm * Make two calls; the second one should store the old
18050b44919Sbluhm * timer value which should be the same as that set in
18150b44919Sbluhm * the first call, or slightly less due to time passing
18250b44919Sbluhm * between the two calls.
183a545a52cSbluhm */
184a545a52cSbluhm it.it_value.tv_sec = 4;
18550b44919Sbluhm it.it_value.tv_usec = 999999;
186a545a52cSbluhm
187a545a52cSbluhm it.it_interval.tv_sec = 0;
188a545a52cSbluhm it.it_interval.tv_usec = 0;
189a545a52cSbluhm
190a545a52cSbluhm ATF_REQUIRE(setitimer(ITIMER_REAL, &it, &ot) == 0);
191a545a52cSbluhm
192a545a52cSbluhm it.it_value.tv_sec = 2;
193a545a52cSbluhm it.it_value.tv_usec = 1;
194a545a52cSbluhm
195a545a52cSbluhm it.it_interval.tv_sec = 0;
196a545a52cSbluhm it.it_interval.tv_usec = 0;
197a545a52cSbluhm
198a545a52cSbluhm ATF_REQUIRE(setitimer(ITIMER_REAL, &it, &ot) == 0);
199a545a52cSbluhm
20050b44919Sbluhm /* Check seconds only as microseconds may have decremented */
20150b44919Sbluhm if (ot.it_value.tv_sec != 4)
202a545a52cSbluhm atf_tc_fail("setitimer(2) did not store old values");
203a545a52cSbluhm }
204a545a52cSbluhm
ATF_TP_ADD_TCS(tp)205a545a52cSbluhm ATF_TP_ADD_TCS(tp)
206a545a52cSbluhm {
207a545a52cSbluhm
208a545a52cSbluhm ATF_TP_ADD_TC(tp, getitimer_empty);
209a545a52cSbluhm ATF_TP_ADD_TC(tp, getitimer_err);
210a545a52cSbluhm ATF_TP_ADD_TC(tp, setitimer_basic);
211a545a52cSbluhm ATF_TP_ADD_TC(tp, setitimer_err);
212a545a52cSbluhm ATF_TP_ADD_TC(tp, setitimer_old);
213a545a52cSbluhm
214a545a52cSbluhm return atf_no_error();
215a545a52cSbluhm }
216