File: recvfrom.c

package info (click to toggle)
strace 6.13%2Bds-1
  • links: PTS, VCS
  • area: main
  • in suites: trixie
  • size: 71,488 kB
  • sloc: ansic: 176,497; sh: 9,675; makefile: 4,133; cpp: 885; awk: 353; perl: 267; exp: 62; sed: 9
file content (69 lines) | stat: -rw-r--r-- 1,484 bytes parent folder | download | duplicates (9)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
/*
 * Check decoding of sockaddr related arguments of recvfrom syscall.
 *
 * Copyright (c) 2016-2021 Dmitry V. Levin <ldv@strace.io>
 * All rights reserved.
 *
 * SPDX-License-Identifier: GPL-2.0-or-later
 */

#define TEST_SYSCALL_NAME recvfrom
#define TEST_SYSCALL_PREPARE send_un()
#define PREFIX_S_ARGS	, recv_buf, 1, 0
#define PREFIX_S_STR	", \"A\", 1, 0"
#define PREFIX_F_ARGS	, 0, 1, 0
#define PREFIX_F_STR	", NULL, 1, 0"
static void send_un(void);
static char recv_buf[1];
#include "sockname.c"

static int cfd;

static void
send_un(void)
{
	if (send(cfd, "A", 1, 0) != 1)
		perror_msg_and_skip("send");
}

int
main(void)
{
	cfd = socket(AF_UNIX, SOCK_STREAM, 0);
	int lfd = socket(AF_UNIX, SOCK_STREAM, 0);
	if (cfd < 0 || lfd < 0)
		perror_msg_and_skip("socket");

	struct sockaddr_un un = {
		.sun_family = AF_UNIX,
		.sun_path = TEST_SOCKET ".send"
	};

	(void) unlink(un.sun_path);
	if (bind(cfd, (const void *) &un, sizeof(un)))
		perror_msg_and_skip("bind");
	(void) unlink(un.sun_path);

	un.sun_path[sizeof(TEST_SOCKET) - 1] = '\0';
	(void) unlink(un.sun_path);

	if (bind(lfd, (const void *) &un, sizeof(un)))
		perror_msg_and_skip("bind");

	if (listen(lfd, 1))
		perror_msg_and_skip("listen");

	if (connect(cfd, (const void *) &un, sizeof(un)))
		perror_msg_and_skip("connect");

	int afd = accept(lfd, 0, 0);
	if (afd < 0)
		perror_msg_and_skip("accept");

	(void) unlink(un.sun_path);

	test_sockname_syscall(afd);

	puts("+++ exited with 0 +++");
	return 0;
}