Алгоритми маршрутизації в мережах, Детальна інформація

/* Historically, SIGALRM would cause the daemon to check for

* new and broken interfaces.

*/

ifinit_timer.tv_sec = now.tv_sec;

trace_act("SIGALRM");

}

/* watch for fatal signals */

void

sigterm(int sig)

{

stopint = sig;

(void)signal(sig, SIG_DFL); /* catch it only once */

}

void

fix_select(void)

{

struct interface *ifp;

FD_ZERO(&fdbits);

sock_max = 0;

FD_SET(rt_sock, &fdbits);

if (sock_max <= rt_sock)

sock_max = rt_sock+1;

if (rip_sock >= 0) {

FD_SET(rip_sock, &fdbits);

if (sock_max <= rip_sock)

sock_max = rip_sock+1;

}

for (ifp = ifnet; 0 != ifp; ifp = ifp->int_next) {

if (ifp->int_rip_sock >= 0) {

FD_SET(ifp->int_rip_sock, &fdbits);