/* called to apply the new configuration once all I/O worker threads have finished */
static void
main_loop_reload_config_apply(void)
{
if (main_loop_is_terminating())
{
if (main_loop_new_config)
{
cfg_free(main_loop_new_config);
main_loop_new_config = NULL;
}
return;
}
main_loop_old_config->persist = persist_config_new();
cfg_deinit(main_loop_old_config);
cfg_persist_config_move(main_loop_old_config, main_loop_new_config);
if (cfg_init(main_loop_new_config))
{
msg_verbose("New configuration initialized");
persist_config_free(main_loop_new_config->persist);
main_loop_new_config->persist = NULL;
cfg_free(main_loop_old_config);
current_configuration = main_loop_new_config;
service_management_clear_status();
}
else
{
msg_error("Error initializing new configuration, reverting to old config");
service_management_publish_status("Error initializing new configuration, using the old config");
cfg_persist_config_move(main_loop_new_config, main_loop_old_config);
cfg_deinit(main_loop_new_config);
if (!cfg_init(main_loop_old_config))
{
/* hmm. hmmm, error reinitializing old configuration, we're hosed.
* Best is to kill ourselves in the hope that the supervisor
* restarts us.
*/
kill(getpid(), SIGQUIT);
g_assert_not_reached();
}
persist_config_free(main_loop_old_config->persist);
main_loop_old_config->persist = NULL;
cfg_free(main_loop_new_config);
current_configuration = main_loop_old_config;
goto finish;
}
/* this is already running with the new config in place */
app_post_config_loaded();
msg_notice("Configuration reload request received, reloading configuration");
finish:
main_loop_new_config = NULL;
main_loop_old_config = NULL;
return;
}
int
main(int argc, char *argv[])
{
gint rc;
GOptionContext *ctx;
GError *error = NULL;
z_mem_trace_init("syslog-ng.trace");
g_process_set_argv_space(argc, (gchar **) argv);
setup_caps();
resolved_configurable_paths_init(&resolvedConfigurablePaths);
ctx = g_option_context_new("syslog-ng");
g_process_add_option_group(ctx);
msg_add_option_group(ctx);
g_option_context_add_main_entries(ctx, syslogng_options, NULL);
main_loop_add_options(ctx);
if (!g_option_context_parse(ctx, &argc, &argv, &error))
{
fprintf(stderr, "Error parsing command line arguments: %s\n", error ? error->message : "Invalid arguments");
g_option_context_free(ctx);
return 1;
}
g_option_context_free(ctx);
if (argc > 1)
{
fprintf(stderr, "Excess number of arguments\n");
return 1;
}
if (display_version)
{
interactive_mode();
version();
return 0;
}
if (display_module_registry)
{
interactive_mode();
plugin_list_modules(stdout, TRUE);
return 0;
}
if(startup_debug_flag && debug_flag)
{
startup_debug_flag = FALSE;
}
if(startup_debug_flag)
{
debug_flag = TRUE;
}
if (debug_flag)
{
log_stderr = TRUE;
}
if (syntax_only || debug_flag)
{
g_process_set_mode(G_PM_FOREGROUND);
}
g_process_set_name("syslog-ng");
/* in this case we switch users early while retaining a limited set of
* credentials in order to initialize/reinitialize the configuration.
*/
g_process_start();
app_startup();
main_loop_init();
rc = main_loop_read_and_init_config();
if (rc)
{
g_process_startup_failed(rc, TRUE);
return rc;
}
else
{
if (syntax_only)
g_process_startup_failed(0, TRUE);
else
g_process_startup_ok();
}
/* we are running as a non-root user from this point */
app_post_daemonized();
app_post_config_loaded();
if(startup_debug_flag)
{
debug_flag = FALSE;
log_stderr = FALSE;
}
/* from now on internal messages are written to the system log as well */
main_loop_run();
main_loop_deinit();
app_shutdown();
z_mem_trace_dump();
g_process_finish();
return rc;
}
