1 /*
2  * Check decoding of sockaddr related arguments of recvfrom syscall.
3  *
4  * Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org>
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are 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 the
14  *    documentation and/or other materials provided with the distribution.
15  * 3. The name of the author may not be used to endorse or promote products
16  *    derived from this software without specific prior written permission.
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28  */
29 
30 #define TEST_SYSCALL_NAME recvfrom
31 #define TEST_SYSCALL_PREPARE send_un()
32 #define PREFIX_S_ARGS	, recv_buf, 1, 0
33 #define PREFIX_S_STR	", \"A\", 1, 0"
34 #define PREFIX_F_ARGS	, 0, 1, 0
35 #define PREFIX_F_STR	", NULL, 1, 0"
36 static void send_un(void);
37 static char recv_buf[1];
38 #include "sockname.c"
39 
40 static int cfd;
41 
42 static void
43 send_un(void)
44 {
45 	if (send(cfd, "A", 1, 0) != 1)
46 		perror_msg_and_skip("send");
47 }
48 
49 int
50 main(void)
51 {
52 	cfd = socket(AF_UNIX, SOCK_STREAM, 0);
53 	int lfd = socket(AF_UNIX, SOCK_STREAM, 0);
54 	if (cfd < 0 || lfd < 0)
55 		perror_msg_and_skip("socket");
56 
57 	struct sockaddr_un un = {
58 		.sun_family = AF_UNIX,
59 		.sun_path = TEST_SOCKET ".send"
60 	};
61 
62 	(void) unlink(un.sun_path);
63 	if (bind(cfd, (const void *) &un, sizeof(un)))
64 		perror_msg_and_skip("bind");
65 	(void) unlink(un.sun_path);
66 
67 	un.sun_path[sizeof(TEST_SOCKET) - 1] = '\0';
68 	(void) unlink(un.sun_path);
69 
70 	if (bind(lfd, (const void *) &un, sizeof(un)))
71 		perror_msg_and_skip("bind");
72 
73 	if (listen(lfd, 1))
74 		perror_msg_and_skip("listen");
75 
76 	if (connect(cfd, (const void *) &un, sizeof(un)))
77 		perror_msg_and_skip("connect");
78 
79 	int afd = accept(lfd, 0, 0);
80 	if (afd < 0)
81 		perror_msg_and_skip("accept");
82 
83 	(void) unlink(un.sun_path);
84 
85 	test_sockname_syscall(afd);
86 
87 	puts("+++ exited with 0 +++");
88 	return 0;
89 }
90