1#include <assert.h>
2#include <stddef.h>
3#include <string.h>
4#include <unistd.h>
5#include <sys/wait.h>
6#include <sys/socket.h>
7#include <sys/un.h>
8
9#define SUN_PATH "local-stream"
10int main(void)
11{
12	struct sockaddr_un addr = {
13		.sun_family = AF_UNIX,
14		.sun_path = SUN_PATH
15	};
16	socklen_t len = offsetof(struct sockaddr_un, sun_path) + sizeof SUN_PATH;
17
18	unlink(SUN_PATH);
19	close(0);
20	close(1);
21
22	assert(socket(PF_LOCAL, SOCK_STREAM, 0) == 0);
23	assert(bind(0, (struct sockaddr *) &addr, len) == 0);
24	assert(listen(0, 5) == 0);
25
26	memset(&addr, 0, sizeof addr);
27	assert(getsockname(0, (struct sockaddr *) &addr, &len) == 0);
28
29	pid_t pid = fork();
30	assert(pid >= 0);
31
32	if (pid) {
33		assert(accept(0, (struct sockaddr *) &addr, &len) == 1);
34		assert(close(0) == 0);
35		int status;
36		assert(waitpid(pid, &status, 0) == pid);
37		assert(status == 0);
38		assert(close(1) == 0);
39	} else {
40		assert(socket(PF_LOCAL, SOCK_STREAM, 0) == 1);
41		assert(close(0) == 0);
42		assert(connect(1, (struct sockaddr *) &addr, len) == 0);
43		assert(close(1) == 0);
44		return 0;
45	}
46
47	unlink(SUN_PATH);
48	return 0;
49}
50