1/*
2 * Copyright (c) 2013-2016 Dmitry V. Levin <ldv@altlinux.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 *    derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28#include "tests.h"
29#include <assert.h>
30#include <stddef.h>
31#include <string.h>
32#include <signal.h>
33#include <unistd.h>
34#include <sys/wait.h>
35#include <sys/socket.h>
36#include <sys/un.h>
37
38static void
39handler(int sig)
40{
41	assert(close(1) == 0);
42	_exit(0);
43}
44
45int
46main(int ac, const char **av)
47{
48	struct sockaddr_un addr = {
49		.sun_family = AF_UNIX,
50	};
51	socklen_t len;
52
53	assert(ac == 2);
54	assert(strlen(av[1]) > 0);
55
56	strncpy(addr.sun_path, av[1], sizeof(addr.sun_path));
57	len = offsetof(struct sockaddr_un, sun_path) + strlen(av[1]) + 1;
58	if (len > sizeof(addr))
59		len = sizeof(addr);
60
61	unlink(av[1]);
62	close(0);
63	close(1);
64
65	if (socket(AF_UNIX, SOCK_STREAM, 0))
66		perror_msg_and_skip("socket");
67	if (bind(0, (struct sockaddr *) &addr, len))
68		perror_msg_and_skip("bind");
69	if (listen(0, 5))
70		perror_msg_and_skip("listen");
71
72	memset(&addr, 0, sizeof addr);
73	assert(getsockname(0, (struct sockaddr *) &addr, &len) == 0);
74	if (len > sizeof(addr))
75		len = sizeof(addr);
76
77	pid_t pid = fork();
78	if (pid < 0)
79		perror_msg_and_fail("fork");
80
81	if (pid) {
82		assert(accept(0, (struct sockaddr *) &addr, &len) == 1);
83		assert(close(0) == 0);
84		assert(kill(pid, SIGUSR1) == 0);
85		int status;
86		assert(waitpid(pid, &status, 0) == pid);
87		assert(status == 0);
88		assert(close(1) == 0);
89	} else {
90		sigset_t set;
91		sigemptyset(&set);
92		sigaddset(&set, SIGUSR1);
93
94		assert(sigprocmask(SIG_BLOCK, &set, NULL) == 0);
95		assert(signal(SIGUSR1, handler) != SIG_ERR);
96		assert(socket(AF_UNIX, SOCK_STREAM, 0) == 1);
97		assert(close(0) == 0);
98		assert(connect(1, (struct sockaddr *) &addr, len) == 0);
99		assert(sigprocmask(SIG_UNBLOCK, &set, NULL) == 0);
100		assert(pause() == 99);
101		return 1;
102	}
103
104	unlink(av[1]);
105	return 0;
106}
107