#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>

/*
 * In the included file <sys/un.h> a sockaddr_un is defined as follows
 * struct sockaddr_un {
 *    short sun_family;
 *    char  sun_path[108];
 * };
 */

#include <stdio.h>

#define NAME "socket"

/*
 * This program creates a UNIX domain datagram socket, binds a name to it,
 * then reads from the socket.
 */

main()
{
     int sock, length;
     struct sockaddr_un name;
     char buf[1024];

     /* Create socket from which to read. */
     sock = socket(AF_UNIX, SOCK_DGRAM, 0);
     if (sock < 0) {
          perror("opening datagram socket");
          exit(1);
     }

     /* Create name. */
     name.sun_family = AF_UNIX;
     strcpy(name.sun_path, NAME);
     if (bind(sock, &name, sizeof(struct sockaddr_un))) {
          perror("binding name to datagram socket");
          exit(1);
     }
     printf("socket -->%s\n", NAME);

     /* Read from the socket */
     if (read(sock, buf, 1024) < 0)
          perror("receiving datagram packet");
     printf("-->%s\n", buf);
     close(sock);
     unlink(NAME);
}