static RETSIGTYPE fatal_signal_handler(int a) {
struct sigaction act;
logger(LOG_ERR, "Got fatal signal %d (%s)", a, strsignal(a));
if(do_detach) {
logger(LOG_NOTICE, "Trying to re-execute in 5 seconds...");
act.sa_handler = fatal_signal_square;
act.sa_mask = emptysigset;
act.sa_flags = 0;
sigaction(SIGSEGV, &act, NULL);
close_network_connections();
sleep(5);
remove_pid(pidfilename);
execvp(g_argv[0], g_argv);
} else {
logger(LOG_NOTICE, "Not restarting.");
exit(1);
}
}
int main2(int argc, char **argv) {
InitializeCriticalSection(&mutex);
EnterCriticalSection(&mutex);
#endif
if(!detach())
return 1;
#ifdef HAVE_MLOCKALL
/* Lock all pages into memory if requested.
* This has to be done after daemon()/fork() so it works for child.
* No need to do that in parent as it's very short-lived. */
if(do_mlock && mlockall(MCL_CURRENT | MCL_FUTURE) != 0) {
logger(LOG_ERR, "System call `%s' failed: %s", "mlockall",
strerror(errno));
return 1;
}
#endif
/* Setup sockets and open device. */
if(!setup_network())
goto end;
/* Initiate all outgoing connections. */
try_outgoing_connections();
/* Change process priority */
char *priority = 0;
if(get_config_string(lookup_config(config_tree, "ProcessPriority"), &priority)) {
if(!strcasecmp(priority, "Normal")) {
if (setpriority(NORMAL_PRIORITY_CLASS) != 0) {
logger(LOG_ERR, "System call `%s' failed: %s",
"setpriority", strerror(errno));
goto end;
}
} else if(!strcasecmp(priority, "Low")) {
if (setpriority(BELOW_NORMAL_PRIORITY_CLASS) != 0) {
logger(LOG_ERR, "System call `%s' failed: %s",
"setpriority", strerror(errno));
goto end;
}
} else if(!strcasecmp(priority, "High")) {
if (setpriority(HIGH_PRIORITY_CLASS) != 0) {
logger(LOG_ERR, "System call `%s' failed: %s",
"setpriority", strerror(errno));
goto end;
}
} else {
logger(LOG_ERR, "Invalid priority `%s`!", priority);
goto end;
}
}
/* drop privileges */
if (!drop_privs())
goto end;
/* Start main loop. It only exits when tinc is killed. */
status = main_loop();
/* Shutdown properly. */
ifdebug(CONNECTIONS)
dump_device_stats();
close_network_connections();
end:
logger(LOG_NOTICE, "Terminating");
#ifndef HAVE_MINGW
remove_pid(pidfilename);
#endif
EVP_cleanup();
ENGINE_cleanup();
CRYPTO_cleanup_all_ex_data();
ERR_remove_state(0);
ERR_free_strings();
exit_configuration(&config_tree);
free_names();
return status;
}
int main2(int argc, char **argv) {
#endif
char *priority = NULL;
if(!detach())
return 1;
#ifdef HAVE_MLOCKALL
/* Lock all pages into memory if requested.
* This has to be done after daemon()/fork() so it works for child.
* No need to do that in parent as it's very short-lived. */
if(do_mlock && mlockall(MCL_CURRENT | MCL_FUTURE) != 0) {
logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s", "mlockall",
strerror(errno));
return 1;
}
#endif
/* Setup sockets and open device. */
if(!setup_network())
goto end;
/* Change process priority */
if(get_config_string(lookup_config(config_tree, "ProcessPriority"), &priority)) {
if(!strcasecmp(priority, "Normal")) {
if (setpriority(NORMAL_PRIORITY_CLASS) != 0) {
logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s", "setpriority", strerror(errno));
goto end;
}
} else if(!strcasecmp(priority, "Low")) {
if (setpriority(BELOW_NORMAL_PRIORITY_CLASS) != 0) {
logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s", "setpriority", strerror(errno));
goto end;
}
} else if(!strcasecmp(priority, "High")) {
if (setpriority(HIGH_PRIORITY_CLASS) != 0) {
logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s", "setpriority", strerror(errno));
goto end;
}
} else {
logger(DEBUG_ALWAYS, LOG_ERR, "Invalid priority `%s`!", priority);
goto end;
}
}
/* drop privileges */
if (!drop_privs())
goto end;
/* Start main loop. It only exits when tinc is killed. */
logger(DEBUG_ALWAYS, LOG_NOTICE, "Ready");
if(umbilical) { // snip!
write(umbilical, "", 1);
close(umbilical);
umbilical = 0;
}
try_outgoing_connections();
status = main_loop();
/* Shutdown properly. */
end:
close_network_connections();
logger(DEBUG_ALWAYS, LOG_NOTICE, "Terminating");
free(priority);
crypto_exit();
exit_configuration(&config_tree);
free(cmdline_conf);
free_names();
return status;
}