Алгоритми маршрутизації в мережах

signal(SIGALRM, sigalrm);

if (!background)

signal(SIGHUP, sigterm); /* SIGHUP fatal during debugging */

signal(SIGTERM, sigterm);

signal(SIGINT, sigterm);

signal(SIGUSR1, sigtrace_on);

signal(SIGUSR2, sigtrace_off);

/* get into the background */

#ifdef sgi

if (0 > _daemonize(background ? 0 : (_DF_NOCHDIR|_DF_NOFORK),

new_tracelevel == 0 ? -1 : STDOUT_FILENO,

new_tracelevel == 0 ? -1 : STDERR_FILENO,

-1))

BADERR(0, "_daemonize()");

#else

if (background && daemon(0, new_tracelevel) < 0)

BADERR(0,"daemon()");

#endif

mypid = getpid();

srandom((int)(clk.tv_sec ^ clk.tv_usec ^ mypid));

/* prepare socket connected to the kernel.

*/

rt_sock = socket(AF_ROUTE, SOCK_RAW, 0);

if (rt_sock < 0)

BADERR(1,"rt_sock = socket()");