#include <err.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>

#define check(expr) if ((expr) == -1) err(1, "%s", #expr);

int main(int argc, char *argv[]) {
	struct sockaddr_un sun;
	int fd;

	memset(&sun, 0, sizeof(sun));
	sun.sun_family = AF_LOCAL;
	strncpy(sun.sun_path, "/tmp/test.sock", sizeof(sun.sun_path));
	unlink(sun.sun_path);

	check(fd = socket(sun.sun_family, SOCK_DGRAM, 0));
	check(bind(fd, (struct sockaddr *)&sun, SUN_LEN(&sun)));
	check(listen(fd, 10));
	close(fd);
	return 0;
}