1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright 2024 The FreeBSD Foundation
5 *
6 * This software was developed by Konstantin Belousov <kib@FreeBSD.org>
7 * under sponsorship from the FreeBSD Foundation.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 */
30
31 #include <atf-c.h>
32 #include <err.h>
33 #include <errno.h>
34 #include <signal.h>
35 #include <stdio.h>
36 #include <stdlib.h>
37 #include <pthread.h>
38 #include <unistd.h>
39
40 #define NTHREADS 330
41 static int value[NTHREADS];
42 static pthread_t thr[NTHREADS];
43 static pthread_barrier_t barrier;
44
45 static void
handler(int signo __unused,siginfo_t * info,void * data __unused)46 handler(int signo __unused, siginfo_t *info, void *data __unused)
47 {
48 pthread_t self;
49 int i;
50
51 /*
52 * Formally this is thread-unsafe but we know context from
53 * where the signal is sent.
54 */
55 self = pthread_self();
56 for (i = 0; i < NTHREADS; i++) {
57 if (pthread_equal(self, thr[i])) {
58 value[i] = info->si_value.sival_int;
59 pthread_exit(NULL);
60 }
61 }
62 }
63
64 static void *
threadfunc(void * arg __unused)65 threadfunc(void *arg __unused)
66 {
67 pthread_barrier_wait(&barrier);
68 for (;;)
69 pause();
70 }
71
72 ATF_TC(pthread_sigqueue);
ATF_TC_HEAD(pthread_sigqueue,tc)73 ATF_TC_HEAD(pthread_sigqueue, tc)
74 {
75 atf_tc_set_md_var(tc, "descr",
76 "Checks pthread_sigqueue(3) sigval delivery");
77 }
78
ATF_TC_BODY(pthread_sigqueue,tc)79 ATF_TC_BODY(pthread_sigqueue, tc)
80 {
81 struct sigaction sa;
82 union sigval sv;
83 int error, i;
84
85 error = pthread_barrier_init(&barrier, NULL, NTHREADS + 1);
86 ATF_REQUIRE_EQ(0, error);
87
88 memset(&sa, 0, sizeof(sa));
89 sa.sa_sigaction = handler;
90 sigemptyset(&sa.sa_mask);
91 sa.sa_flags = SA_SIGINFO;
92
93 if (sigaction(SIGUSR1, &sa, NULL) != 0)
94 atf_tc_fail("sigaction failed");
95
96 memset(&sv, 0, sizeof(sv));
97
98 for (i = 0; i < NTHREADS; i++) {
99 error = pthread_create(&thr[i], NULL, threadfunc, NULL);
100 ATF_REQUIRE_EQ(0, error);
101 }
102 error = pthread_barrier_wait(&barrier);
103 ATF_REQUIRE(error == 0 || error == PTHREAD_BARRIER_SERIAL_THREAD);
104
105 for (i = 0; i < NTHREADS; i++) {
106 sv.sival_int = i + 1000;
107 error = pthread_sigqueue(thr[i], SIGUSR1, sv);
108 ATF_REQUIRE_EQ(0, error);
109 error = pthread_join(thr[i], NULL);
110 ATF_REQUIRE_EQ(0, error);
111 }
112 for (i = 0; i < NTHREADS; i++)
113 ATF_REQUIRE_EQ(i + 1000, value[i]);
114 }
115
ATF_TP_ADD_TCS(tp)116 ATF_TP_ADD_TCS(tp)
117 {
118 ATF_TP_ADD_TC(tp, pthread_sigqueue);
119 return atf_no_error();
120 }
121