netlink.c

   1 /*
   2  * Copyright (C) 2007 Alejandro Mery <amery@geeks.cl>
   3  *
   4  * More information can be found in the files COPYING and README.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; version 3 of the License. A copy of the
   9  * GNU General Public License can be found in the file COPYING.
  10  */
  11
  12 #include "netlink.h"
  13
  14 #include <unistd.h>     // close()
  15 #include <stdio.h>      // perror()
  16
  17 int nl_open( link_t *self ) {
  18         // initialize
  19         memset(self, 0x00, sizeof(self));
  20
  21         // open the socket
  22         if ( (self->fd = socket( AF_NETLINK, SOCK_RAW, NETLINK_ROUTE )) < 0 ) {
  23                 perror("socket");
  24                 return -1;
  25         }
  26
  27         // bind it to the address
  28         self->sa.nl_family = AF_NETLINK;
  29         if ( bind( self->fd, (const struct sockaddr*) &self->sa, sizeof( self->sa ) ) < 0 ) {
  30                 perror("bind");
  31                 close( self->fd );
  32         }
  33
  34         return self->fd;
  35 }
  36
  37 inline int nl_close( link_t *self ) {
  38         return close( self->fd );
  39 }