1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2023 Andreas Bock <andreas.bock@virtual-arts-software.de>
5 * Copyright (c) 2023 Mark Johnston <markj@FreeBSD.org>
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are
9 * met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in
14 *    the documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#include <sys/event.h>
30#include <sys/wait.h>
31
32#include <err.h>
33#include <signal.h>
34#include <unistd.h>
35
36#include <atf-c.h>
37
38/*
39 * A regression test for bugzilla 275286.
40 */
41ATF_TC_WITHOUT_HEAD(shared_table_filt_sig);
42ATF_TC_BODY(shared_table_filt_sig, tc)
43{
44	struct sigaction sa;
45	pid_t pid;
46	int error, status;
47
48	sa.sa_handler = SIG_IGN;
49	sigemptyset(&sa.sa_mask);
50	sa.sa_flags = 0;
51	error = sigaction(SIGINT, &sa, NULL);
52	ATF_REQUIRE(error == 0);
53
54	pid = rfork(RFPROC);
55	ATF_REQUIRE(pid != -1);
56	if (pid == 0) {
57		struct kevent ev;
58		int kq;
59
60		kq = kqueue();
61		if (kq < 0)
62			err(1, "kqueue");
63		EV_SET(&ev, SIGINT, EVFILT_SIGNAL, EV_ADD | EV_ENABLE, 0, 0,
64		    NULL);
65		if (kevent(kq, &ev, 1, NULL, 0, NULL) < 0)
66			err(2, "kevent");
67		if (kevent(kq, NULL, 0, &ev, 1, NULL) < 0)
68			err(3, "kevent");
69		_exit(0);
70	}
71
72	/* Wait for the child to block in kevent(). */
73	usleep(100000);
74
75	error = kill(pid, SIGINT);
76	ATF_REQUIRE(error == 0);
77
78	error = waitpid(pid, &status, 0);
79	ATF_REQUIRE(error != -1);
80	ATF_REQUIRE(WIFEXITED(status));
81	ATF_REQUIRE_EQ(WEXITSTATUS(status), 0);
82}
83
84ATF_TP_ADD_TCS(tp)
85{
86	ATF_TP_ADD_TC(tp, shared_table_filt_sig);
87
88	return (atf_no_error());
89}
90