#include "config.h"
#include <sys/time.h>
#include "daemon/daemon.h"
#include "daemon/worker.h"
#include "daemon/remote.h"
#include "daemon/acl_list.h"
#include "util/log.h"
#include "util/config_file.h"
#include "util/data/msgreply.h"
#include "util/shm_side/shm_main.h"
#include "util/storage/lookup3.h"
#include "util/storage/slabhash.h"
#include "util/tcp_conn_limit.h"
#include "services/listen_dnsport.h"
#include "services/cache/rrset.h"
#include "services/cache/infra.h"
#include "services/localzone.h"
#include "services/view.h"
#include "services/modstack.h"
#include "services/authzone.h"
#include "util/module.h"
#include "util/random.h"
#include "util/tube.h"
#include "util/net_help.h"
#include "sldns/keyraw.h"
#include "respip/respip.h"
#include <signal.h>

Functions
int	ub_c_lex_destroy (void)
	remove buffers for parsing and init

static RETSIGTYPE	record_sigh (int sig)
	used when no other sighandling happens, so we don't die when multiple signals in quick succession are sent to us. More...

static void	signal_handling_record (void)
	Signal handling during the time when netevent is disabled. More...

static void	signal_handling_playback (struct worker *wrk)
	Replay old signals. More...

struct daemon *	daemon_init (void)
	Initialize daemon structure. More...

int	daemon_open_shared_ports (struct daemon *daemon)
	Open shared listening ports (if needed). More...

static void	daemon_setup_modules (struct daemon *daemon)
	Setup modules. More...

static int	daemon_get_shufport (struct daemon daemon, int shufport)
	Obtain allowed port numbers, concatenate the list, and shuffle them (ready to be handed out to threads). More...

static void	daemon_create_workers (struct daemon *daemon)
	Allocate empty worker structures. More...

static void *	thread_start (void *arg)
	Function to start one thread. More...

static void	daemon_start_others (struct daemon *daemon)
	Fork and init the other threads. More...

static void	daemon_stop_others (struct daemon *daemon)
	Stop the other threads. More...

void	daemon_fork (struct daemon *daemon)
	Fork workers and start service. More...

void	daemon_cleanup (struct daemon *daemon)
	Close off the worker thread information. More...

void	daemon_delete (struct daemon *daemon)
	Delete workers, close listening ports. More...

void	daemon_apply_cfg (struct daemon daemon, struct config_file cfg)
	Apply config settings. More...

Variables
static int	sig_record_quit = 0
	How many quit requests happened.

static int	sig_record_reload = 0
	How many reload requests happened.

Detailed Description

The daemon consists of global settings and a number of workers.

Function Documentation

◆ record_sigh()

static RETSIGTYPE record_sigh ( int sig )

static

used when no other sighandling happens, so we don't die when multiple signals in quick succession are sent to us.

Parameters

sig	signal number.

Returns: signal handler return type (void or int).

References sig_record_quit, and sig_record_reload.

Referenced by signal_handling_record().

◆ signal_handling_record()

static void signal_handling_record ( void )

static

Signal handling during the time when netevent is disabled.

Stores signals to replay later.

References log_err(), and record_sigh().

Referenced by daemon_cleanup().

◆ signal_handling_playback()

static void signal_handling_playback ( struct worker * wrk )

static

Replay old signals.

Parameters

wrk	worker that handles signals.

References sig_record_quit, sig_record_reload, and worker_sighandler().

◆ daemon_init()

struct daemon* daemon_init ( void )

Initialize daemon structure.

Returns: : The daemon structure, or NULL on error.

Referenced by run_daemon().

◆ daemon_open_shared_ports()

int daemon_open_shared_ports ( struct daemon * daemon )

Open shared listening ports (if needed).

The cfg member pointer must have been set for the daemon.

Parameters

daemon the daemon.

Returns: : false on error.

References daemon::cfg, config_file::control_port, daemon_remote_open_ports(), daemon::listening_port, listening_ports_free(), listening_ports_open(), log_assert, daemon::num_ports, config_file::num_threads, config_file::port, daemon::ports, daemon::rc_port, daemon::rc_ports, config_file::remote_control_enable, daemon::reuseport, and config_file::so_reuseport.

◆ daemon_setup_modules()

static void daemon_setup_modules ( struct daemon * daemon )

static

Setup modules.

setup module stack.

Parameters

daemon the daemon

References module_env::alloc, daemon::cfg, module_env::cfg, daemon::env, daemon::mods, modstack_setup(), config_file::module_conf, module_env::need_to_validate, daemon::superalloc, and module_env::worker.

◆ daemon_get_shufport()

static int daemon_get_shufport	(	struct daemon *	daemon,
		int *	shufport
	)

static

Obtain allowed port numbers, concatenate the list, and shuffle them (ready to be handed out to threads).

Parameters

daemon	the daemon. Uses rand and cfg.
shufport	the portlist output.

Returns: number of ports available.

References daemon::cfg, and config_file::outgoing_avail_ports.

◆ daemon_create_workers()

static void daemon_create_workers ( struct daemon * daemon )

static

Allocate empty worker structures.

With backptr and thread-number, from 0..numthread initialised. Used as user arguments to new threads. Creates the daemon random generator if it does not exist yet. The random generator stays existing between reloads with a unique state.

Parameters

daemon the daemon with (new) config settings.

References daemon::cfg, log_assert, daemon::rand, and ub_initstate().