unbound.c File Reference

Main program to start the DNS resolver daemon. More...

#include "config.h"
#include <sys/time.h>
#include "util/log.h"
#include "daemon/daemon.h"
#include "daemon/remote.h"
#include "util/config_file.h"
#include "util/storage/slabhash.h"
#include "services/listen_dnsport.h"
#include "services/cache/rrset.h"
#include "services/cache/infra.h"
#include "util/fptr_wlist.h"
#include "util/data/msgreply.h"
#include "util/module.h"
#include "util/net_help.h"
#include "util/ub_event.h"
#include <signal.h>
#include <fcntl.h>
#include <openssl/crypto.h>
#include <openssl/ssl.h>

Functions
static void	print_build_options (void)
	print build options.
static void	usage (void)
	print usage.
int	replay_var_compare (const void *ATTR_UNUSED(a), const void *ATTR_UNUSED(b))
static void	checkrlimits (struct config_file *cfg)
	check file descriptor count
static void	apply_settings (struct daemon *daemon, struct config_file *cfg, int cmdline_verbose, int debug_mode)
	set verbosity, check rlimits, cache settings
static void	detach (void)
	detach from command line
static void	setup_sslctxs (struct daemon *daemon, struct config_file *cfg)
static void	perform_setup (struct daemon *daemon, struct config_file *cfg, int debug_mode, const char **cfgfile, int need_pidfile)
	daemonize, drop user privileges and chroot if needed
static void	run_daemon (const char *cfgfile, int cmdline_verbose, int debug_mode, int need_pidfile)
	Run the daemon.
int	main (int argc, char *argv[])
	main program.

Variables
int	optind
	getopt global, in case header files fail to declare it.
char *	optarg
	getopt global, in case header files fail to declare it.

Detailed Description

Main program to start the DNS resolver daemon.

Function Documentation

run_daemon()

static void run_daemon ( const char *  cfgfile, int  cmdline_verbose, int  debug_mode, int  need_pidfile  )

static

Run the daemon.

Parameters

cfgfile	the config file name.
cmdline_verbose	verbosity resulting from commandline -v. These increase verbosity as specified in the config file.
debug_mode	if set, do not daemonize.
need_pidfile	if false, no pidfile is checked or created.

References apply_settings(), daemon::cfg, daemon::cfgfile, daemon::chroot, config_file::chrootdir, config_auto_slab_values(), config_create(), config_delete(), config_lookup_uid(), config_read(), daemon_cleanup(), daemon_delete(), daemon_fork(), daemon_init(), daemon_open_shared_ports(), fatal_exit(), log_init(), log_warn(), config_file::logfile, daemon::need_to_exit, perform_setup(), daemon::pidfile, config_file::use_syslog, VERB_ALGO, VERB_OPS, and verbose().

Referenced by main().

main()

int main	(	int	argc,
		char *	argv[]
	)

main program.

Set options given commandline arguments.

Parameters

argc	number of commandline arguments.
argv	array of commandline arguments.

Returns

: exit status of the program.

References daemon::cfgfile, fatal_exit(), log_get_lock(), log_ident_set(), log_ident_set_default(), log_init(), optarg, optind, print_build_options(), run_daemon(), usage(), verbosity, and wsvc_command_option().