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/*
* BIRD Internet Routing Daemon -- Unix Entry Point
*
* (c) 1998 Martin Mares <mj@ucw.cz>
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/signal.h>
#include "nest/bird.h"
#include "lib/lists.h"
#include "lib/resource.h"
#include "lib/socket.h"
#include "nest/route.h"
#include "nest/protocol.h"
#include "nest/iface.h"
#include "conf/conf.h"
#include "conf/filter.h"
#include "unix.h"
#include "krt.h"
/*
* Debugging
*/
static void
handle_sigusr(int sig)
{
debug("SIGUSR1: Debugging dump...\n\n");
sk_dump_all();
tm_dump_all();
if_dump_all();
neigh_dump_all();
rta_dump_all();
rt_dump_all();
protos_dump_all();
debug("\n");
}
static void
signal_init(void)
{
static struct sigaction sa;
sa.sa_handler = handle_sigusr;
sa.sa_flags = SA_RESTART;
if (sigaction(SIGUSR1, &sa, NULL) < 0)
die("sigaction: %m");
signal(SIGPIPE, SIG_IGN);
}
/*
* Reading the Configuration
*/
static int conf_fd;
static int
cf_read(byte *dest, unsigned int len)
{
int l = read(conf_fd, dest, len);
if (l < 0)
cf_error("Read error");
return l;
}
static void
read_config(void)
{
cf_lex_init_tables();
cf_allocate();
conf_fd = open(PATH_CONFIG, O_RDONLY);
if (conf_fd < 0)
die("Unable to open configuration file " PATH_CONFIG ": %m");
protos_preconfig();
cf_read_hook = cf_read;
cf_lex_init(1);
cf_parse();
protos_postconfig();
}
/*
* Hic Est main()
*/
int
main(void)
{
log(L_INFO "Launching BIRD 0.0.0...");
log_init_debug(NULL);
debug("Initializing.\n");
resource_init();
io_init();
rt_init();
if_init();
protos_build();
add_tail(&protocol_list, &proto_unix_kernel.n);
protos_init();
debug("Reading configuration file.\n");
read_config();
filters_init();
signal_init();
scan_if_init();
auto_router_id();
protos_start();
handle_sigusr(0);
debug("Entering I/O loop.\n");
io_loop();
bug("I/O loop died");
}
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