/**
* main() - entry point
*
* Declare VRRP instance, init daemon
* and launch state machine
*/
int main(int argc, char *argv[])
{
signal_setup();
/* Current VRRP instance */
struct vrrp vrrp;
struct vrrp_net vnet;
/* Init VRRP instance */
vrrp_init(&vrrp);
vrrp_net_init(&vnet);
/* cmdline options */
if (! !vrrp_options(&vrrp, &vnet, argc, argv))
exit(EXIT_FAILURE);
/* pidfile init && check */
if (pidfile_init(vrrp.vrid) != 0)
exit(EXIT_FAILURE);
pidfile_check(vrrp.vrid);
/* logs */
log_open("uvrrpd", (char const *) loglevel);
/* open sockets */
if ((vrrp_net_socket(&vnet) != 0) || (vrrp_net_socket_xmit(&vnet) != 0))
exit(EXIT_FAILURE);
/* hook script */
if (vrrp_exec_init(&vrrp) != 0)
exit(EXIT_FAILURE);
/* advertisement pkt */
if (vrrp_adv_init(&vnet, &vrrp) != 0)
exit(EXIT_FAILURE);
/* net topology */
if (vnet.family == AF_INET) {
if (vrrp_arp_init(&vnet) != 0)
exit(EXIT_FAILURE);
}
else if (vnet.family == AF_INET6) {
if (vrrp_na_init(&vnet) != 0)
exit(EXIT_FAILURE);
}
/* daemonize */
if (background) {
daemon(0, (log_trigger(NULL) > LOG_INFO));
}
else
chdir("/");
/* pidfile */
pidfile(vrrp.vrid);
/* process */
set_bit(KEEP_GOING, ®);
while (test_bit(KEEP_GOING, ®) && !vrrp_process(&vrrp, &vnet));
/* shutdown */
vrrp_adv_cleanup(&vnet);
if (vnet.family == AF_INET)
vrrp_arp_cleanup(&vnet);
else /* AF_INET6 */
vrrp_na_cleanup(&vnet);
vrrp_cleanup(&vrrp);
vrrp_exec_cleanup(&vrrp);
vrrp_net_cleanup(&vnet);
log_close();
free(loglevel);
pidfile_unlink();
free(pidfile_name);
return EXIT_SUCCESS;
}
void log_open(char const *app, char const *level)
{
openlog(app ? app : "-", LOG_PERROR | LOG_PID, LOG_DAEMON);
log_trigger(level);
}