| #include <stddef.h> |
| #include <stdio.h> |
| #include <errno.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <sys/socket.h> |
| #include <sys/un.h> |
| |
| int |
| make_named_socket (const char *filename) |
| { |
| struct sockaddr_un name; |
| int sock; |
| size_t size; |
| |
| /* Create the socket. */ |
| sock = socket (PF_LOCAL, SOCK_DGRAM, 0); |
| if (sock < 0) |
| { |
| perror ("socket"); |
| exit (EXIT_FAILURE); |
| } |
| |
| /* Bind a name to the socket. */ |
| name.sun_family = AF_LOCAL; |
| strncpy (name.sun_path, filename, sizeof (name.sun_path)); |
| name.sun_path[sizeof (name.sun_path) - 1] = '\0'; |
| |
| /* The size of the address is |
| the offset of the start of the filename, |
| plus its length, |
| plus one for the terminating null byte. |
| Alternatively you can just do: |
| size = SUN_LEN (&name); |
| */ |
| size = (offsetof (struct sockaddr_un, sun_path) |
| + strlen (name.sun_path) + 1); |
| |
| if (bind (sock, (struct sockaddr *) &name, size) < 0) |
| { |
| perror ("bind"); |
| exit (EXIT_FAILURE); |
| } |
| |
| return sock; |
| } |