along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id: tincd.c,v 1.10.4.28 2000/11/15 01:06:13 zarq Exp $
+ $Id: tincd.c,v 1.10.4.29 2000/11/16 17:54:29 zarq Exp $
*/
#include "config.h"
static int kill_tincd = 0;
/* If zero, don't detach from the terminal. */
-static int do_detach = 1;
+extern int do_detach;
/* If nonzero, generate public/private keypair for this host/net. */
static int generate_keys = 0;
exit(1);
}
-/*
- Detach from current terminal, write pidfile, kill parent
-*/
-int detach(void)
-{
- int fd;
- pid_t pid;
-
- if(do_detach)
- {
- ppid = getpid();
-
- if((pid = fork()) < 0)
- {
- perror("fork");
- return -1;
- }
- if(pid) /* parent process */
- {
- signal(SIGTERM, parent_exit);
- sleep(600); /* wait 10 minutes */
- exit(1);
- }
- }
-
- if(write_pidfile())
- return -1;
-
- if(do_detach)
- {
- if((fd = open("/dev/tty", O_RDWR)) >= 0)
- {
- if(ioctl(fd, TIOCNOTTY, NULL))
- {
- perror("ioctl");
- return -1;
- }
- close(fd);
- }
-
- if(setsid() < 0)
- return -1;
-
- kill(ppid, SIGTERM);
- }
-
- chdir("/"); /* avoid keeping a mointpoint busy */
-
- openlog(identname, LOG_CONS | LOG_PID, LOG_DAEMON);
-
- if(debug_lvl > DEBUG_NOTHING)
- syslog(LOG_NOTICE, _("tincd %s (%s %s) starting, debug level %d"),
- VERSION, __DATE__, __TIME__, debug_lvl);
- else
- syslog(LOG_NOTICE, _("tincd %s starting"), VERSION);
-
- xalloc_fail_func = memory_full;
-
- return 0;
-}
-
/*
Close network connections, and terminate neatly
*/
}
}
-RETSIGTYPE
-sigterm_handler(int a)
-{
- if(debug_lvl > DEBUG_NOTHING)
- syslog(LOG_NOTICE, _("Got TERM signal"));
-
- cleanup_and_exit(0);
-}
-
-RETSIGTYPE
-sigquit_handler(int a)
-{
- if(debug_lvl > DEBUG_NOTHING)
- syslog(LOG_NOTICE, _("Got QUIT signal"));
- cleanup_and_exit(0);
-}
-
-RETSIGTYPE
-sigsegv_square(int a)
-{
- syslog(LOG_ERR, _("Got another SEGV signal: not restarting"));
- exit(0);
-}
-
-RETSIGTYPE
-sigsegv_handler(int a)
-{
- syslog(LOG_ERR, _("Got SEGV signal"));
- cp_trace();
-
- if(do_detach)
- {
- syslog(LOG_NOTICE, _("Trying to re-execute in 5 seconds..."));
- signal(SIGSEGV, sigsegv_square);
- close_network_connections();
- sleep(5);
- remove_pid(pidfilename);
- execvp(g_argv[0], g_argv);
- }
- else
- {
- syslog(LOG_NOTICE, _("Not restarting."));
- exit(0);
- }
-}
-
-RETSIGTYPE
-sighup_handler(int a)
-{
- if(debug_lvl > DEBUG_NOTHING)
- syslog(LOG_NOTICE, _("Got HUP signal"));
- sighup = 1;
-}
-
-RETSIGTYPE
-sigint_handler(int a)
-{
- if(debug_lvl > DEBUG_NOTHING)
- syslog(LOG_NOTICE, _("Got INT signal, exiting"));
- cleanup_and_exit(0);
-}
-
-RETSIGTYPE
-sigusr1_handler(int a)
-{
- dump_conn_list();
-}
-
-RETSIGTYPE
-sigusr2_handler(int a)
-{
- dump_subnet_list();
-}
-
-RETSIGTYPE
-sighuh(int a)
-{
- syslog(LOG_WARNING, _("Got unexpected signal %d (%s)"), a, strsignal(a));
- cp_trace();
-}
-
-void
-setup_signals(void)
-{
- int i;
-
- for(i=0;i<32;i++)
- signal(i,sighuh);
-
- if(signal(SIGTERM, SIG_IGN) != SIG_ERR)
- signal(SIGTERM, sigterm_handler);
- if(signal(SIGQUIT, SIG_IGN) != SIG_ERR)
- signal(SIGQUIT, sigquit_handler);
- if(signal(SIGSEGV, SIG_IGN) != SIG_ERR)
- signal(SIGSEGV, sigsegv_handler);
- if(signal(SIGHUP, SIG_IGN) != SIG_ERR)
- signal(SIGHUP, sighup_handler);
- signal(SIGPIPE, SIG_IGN);
- if(signal(SIGINT, SIG_IGN) != SIG_ERR)
- signal(SIGINT, sigint_handler);
- signal(SIGUSR1, sigusr1_handler);
- signal(SIGUSR2, sigusr2_handler);
- signal(SIGCHLD, SIG_IGN);
-}
-
-RETSIGTYPE parent_exit(int a)
-{
- exit(0);
-}