/*
* main function
*/
int main(int argc, char *argv[])
{
int sock = -1, ret;
unsigned groups;
/* set option */
ret = set_options(argc, argv);
if(ret < 0)
close_exit(sock, 0, ret);
/* open log file */
ret = open_log(log_file);
if(ret < 0)
close_exit(sock, 0, ret);
/* open debug file */
if(log_opts & L_DEBUG) {
ret = open_dbg(dbg_file);
if(ret < 0)
close_exit(sock, 0, ret);
}
/* create lock file */
ret = open_lock();
if(ret < 0)
close_exit(sock, 0, ret);
/* set signal handlers */
ret = set_signal_handlers();
if(ret < 0)
close_exit(sock, 0, ret);
/* initizlize daemon */
ret = init_daemon();
if(ret < 0)
close_exit(sock, 0, ret);
rec_log("info: nield %s started(PID: %ld)", VERSION, (long)getpid());
/* write pid to lock file */
ret = write_lock();
if(ret < 0)
close_exit(sock, 0, ret);
/* open netlink socket to create list */
groups = 0;
sock = open_netlink_socket(groups, NETLINK_ROUTE);
if(sock < 0)
close_exit(sock, 1, ret);
/* request interface list */
ret = send_request(sock, RTM_GETLINK, AF_UNSPEC);
if(ret < 0)
close_exit(sock, 1, ret);
/* receive interface list */
ret = recv_reply(sock, RTM_GETLINK);
if(ret != 0)
close_exit(sock, 1, ret);
/* request bridge interface list */
ret = send_request(sock, RTM_GETLINK, AF_BRIDGE);
if(ret < 0)
close_exit(sock, 1, ret);
/* receive bridge interface list */
ret = recv_reply(sock, RTM_GETLINK);
if(ret != 0)
close_exit(sock, 1, ret);
/* request neighbor cache list */
ret = send_request(sock, RTM_GETNEIGH, AF_UNSPEC);
if(ret < 0)
close_exit(sock, 1, ret);
/* receive & create interface list */
ret = recv_reply(sock, RTM_GETNEIGH);
if(ret != 0)
close_exit(sock, 1, ret);
/* close socket */
close(sock);
/* set rtnetlink multicast groups */
groups = set_rtnetlink_groups();
sock = open_netlink_socket(groups, NETLINK_ROUTE);
if(sock < 0)
close_exit(sock, 1, ret);
/* recevie events */
ret = recv_events(sock);
close_exit(sock, 1, ret);
return(0);
}
void fatal(const char *op, const char *error)
{
fprintf(stderr, "%s: %s\n", op, error);
close_exit();
}