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
|
// SPDX-License-Identifier: GPL-2.0+
/* Create an AF_UNIX socket.
* Copyright (C) 2017 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*/
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/socket.h>
#include <sys/un.h>
#define offsetof(TYPE, MEMBER) ((size_t)&((TYPE *)0)->MEMBER)
int main(int argc, char *argv[])
{
struct sockaddr_un sun;
struct stat st;
size_t len, max;
int fd;
if (argc != 2) {
fprintf(stderr, "Format: %s <socketpath>\n", argv[0]);
exit(2);
}
max = sizeof(sun.sun_path);
len = strlen(argv[1]);
if (len >= max) {
fprintf(stderr, "Filename too long (max %zu)\n", max);
exit(2);
}
fd = socket(AF_UNIX, SOCK_DGRAM, 0);
if (fd < 0) {
perror("socket");
exit(1);
}
memset(&sun, 0, sizeof(sun));
sun.sun_family = AF_UNIX;
strcpy(sun.sun_path, argv[1]);
if (bind(fd, (struct sockaddr *)&sun, sizeof(sun)) == -1) {
perror("bind");
exit(1);
}
if (stat(argv[1], &st)) {
fprintf(stderr, "Couldn't stat socket after creation: %m\n");
exit(1);
}
exit(0);
}
|
