module.h File Reference

Asterisk module definitions. More...

#include "asterisk/utils.h"

Include dependency graph for module.h:

Go to the source code of this file.

Data Structures
struct	ast_module_info

Macros
#define	AST_MODULE_CONFIG   "modules.conf"
	Module configuration file. More...
#define	AST_MODULE_INFO(keystr, flags_to_set, desc, fields...)
#define	AST_MODULE_INFO_STANDARD(keystr, desc)
#define	AST_MODULE_INFO_STANDARD_DEPRECATED(keystr, desc)
#define	AST_MODULE_INFO_STANDARD_EXTENDED(keystr, desc)
#define	ast_module_ref(mod)   __ast_module_ref(mod, __FILE__, __LINE__, __PRETTY_FUNCTION__)
	Hold a reference to the module. More...
#define	ast_module_running_ref(mod)    __ast_module_running_ref(mod, __FILE__, __LINE__, __PRETTY_FUNCTION__)
	Hold a reference to the module if it is running. More...
#define	ast_module_shutdown_ref(mod)   __ast_module_shutdown_ref(mod, __FILE__, __LINE__, __PRETTY_FUNCTION__)
	Prevent unload of the module before shutdown. More...
#define	ast_module_unref(mod)   __ast_module_unref(mod, __FILE__, __LINE__, __PRETTY_FUNCTION__)
	Release a reference to the module. More...
#define	ast_module_user_add(chan)   __ast_module_user_add(AST_MODULE_SELF, chan)
#define	ast_module_user_hangup_all()   __ast_module_user_hangup_all(AST_MODULE_SELF)
#define	ast_module_user_remove(user)   __ast_module_user_remove(AST_MODULE_SELF, user)
#define	ast_register_application(app, execute, synopsis, description)   ast_register_application2(app, execute, synopsis, description, AST_MODULE_SELF)
	Register an application. More...
#define	ast_register_application_xml(app, execute)   ast_register_application(app, execute, NULL, NULL)
	Register an application using XML documentation. More...
#define	ASTERISK_GPL_KEY   "This paragraph is copyright (c) 2006 by Digium, Inc. \In order for your module to load, it must return this \key via a function called \"key\". Any code which \includes this paragraph must be licensed under the GNU \General Public License version 2 or later (at your \option). In addition to Digium's general reservations \of rights, Digium expressly reserves the right to \allow other parties to license this paragraph under \different terms. Any use of Digium, Inc. trademarks or \logos (including \"Asterisk\" or \"Digium\") without \express written permission of Digium, Inc. is prohibited.\n"
	The text the key() function should return. More...
#define	SCOPED_MODULE_USE(module)    RAII_VAR(struct ast_module *, __self__ ## __LINE__, ast_module_ref(module), ast_module_unref)

Enumerations
enum	ast_module_flags { AST_MODFLAG_DEFAULT = 0 , AST_MODFLAG_GLOBAL_SYMBOLS = (1 << 0) , AST_MODFLAG_LOAD_ORDER = (1 << 1) }
enum	ast_module_helper_type {   AST_MODULE_HELPER_LOADED = 0 , AST_MODULE_HELPER_RELOAD = 1 , AST_MODULE_HELPER_LOAD , AST_MODULE_HELPER_UNLOAD ,   AST_MODULE_HELPER_RUNNING }
enum	ast_module_load_priority {   AST_MODPRI_REALTIME_DEPEND = 10 , AST_MODPRI_REALTIME_DEPEND2 = 20 , AST_MODPRI_REALTIME_DRIVER = 30 , AST_MODPRI_CORE = 40 ,   AST_MODPRI_TIMING = 50 , AST_MODPRI_CHANNEL_DEPEND = 60 , AST_MODPRI_CHANNEL_DRIVER = 70 , AST_MODPRI_APP_DEPEND = 80 ,   AST_MODPRI_DEVSTATE_PROVIDER = 90 , AST_MODPRI_DEVSTATE_PLUGIN = 100 , AST_MODPRI_CDR_DRIVER = 110 , AST_MODPRI_DEFAULT = 128 ,   AST_MODPRI_DEVSTATE_CONSUMER = 150 }
enum	ast_module_load_result {   AST_MODULE_LOAD_SUCCESS = 0 , AST_MODULE_LOAD_DECLINE = 1 , AST_MODULE_LOAD_SKIP = 2 , AST_MODULE_LOAD_PRIORITY = 3 ,   AST_MODULE_LOAD_FAILURE = -1 }
enum	ast_module_reload_result {   AST_MODULE_RELOAD_SUCCESS = 0 , AST_MODULE_RELOAD_QUEUED , AST_MODULE_RELOAD_NOT_FOUND , AST_MODULE_RELOAD_ERROR ,   AST_MODULE_RELOAD_IN_PROGRESS , AST_MODULE_RELOAD_UNINITIALIZED , AST_MODULE_RELOAD_NOT_IMPLEMENTED }
	Possible return types for ast_module_reload. More...
enum	ast_module_support_level { AST_MODULE_SUPPORT_UNKNOWN , AST_MODULE_SUPPORT_CORE , AST_MODULE_SUPPORT_EXTENDED , AST_MODULE_SUPPORT_DEPRECATED }
enum	ast_module_unload_mode { AST_FORCE_SOFT = 0 , AST_FORCE_FIRM = 1 , AST_FORCE_HARD = 2 }

Functions
struct ast_module *	__ast_module_ref (struct ast_module *mod, const char *file, int line, const char *func)
struct ast_module *	__ast_module_running_ref (struct ast_module *mod, const char *file, int line, const char *func)
void	__ast_module_shutdown_ref (struct ast_module *mod, const char *file, int line, const char *func)
void	__ast_module_unref (struct ast_module *mod, const char *file, int line, const char *func)
struct ast_module_user *	__ast_module_user_add (struct ast_module *, struct ast_channel *)
void	__ast_module_user_hangup_all (struct ast_module *)
void	__ast_module_user_remove (struct ast_module *, struct ast_module_user *)
enum ast_module_load_result	ast_load_resource (const char *resource_name)
	Load a module. More...
int	ast_loader_register (int(*updater)(void))
	Add a procedure to be run when modules have been updated. More...
int	ast_loader_unregister (int(*updater)(void))
	Remove a procedure to be run when modules are updated. More...
int	ast_module_check (const char *name)
	Check if module with the name given is loaded. More...
char *	ast_module_helper (const char *line, const char *word, int pos, int state, int rpos, enum ast_module_helper_type type)
	Match modules names for the Asterisk cli. More...
const char *	ast_module_name (const struct ast_module *mod)
	Get the name of a module. More...
void	ast_module_register (const struct ast_module_info *)
enum ast_module_reload_result	ast_module_reload (const char *name)
	Reload asterisk modules. More...
const char *	ast_module_support_level_to_string (enum ast_module_support_level support_level)
void	ast_module_unregister (const struct ast_module_info *)
int	ast_refresh_resource (const char *resource_name, enum ast_module_unload_mode force, int recursive)
	Unload and load a module again. More...
int	ast_register_application2 (const char *app, int(*execute)(struct ast_channel *, const char *), const char *synopsis, const char *description, void *mod)
	Register an application. More...
int	ast_unload_resource (const char *resource_name, enum ast_module_unload_mode)
	Unload a module. More...
int	ast_unregister_application (const char *app)
	Unregister an application. More...
int	ast_update_module_list (int(*modentry)(const char *module, const char *description, int usecnt, const char *status, const char *like, enum ast_module_support_level support_level), const char *like)
	Ask for a list of modules, descriptions, use counts and status. More...
int	ast_update_module_list_condition (int(*modentry)(const char *module, const char *description, int usecnt, const char *status, const char *like, enum ast_module_support_level support_level, void *data, const char *condition), const char *like, void *data, const char *condition)
	Ask for a list of modules, descriptions, use counts and status. More...
int	ast_update_module_list_data (int(*modentry)(const char *module, const char *description, int usecnt, const char *status, const char *like, enum ast_module_support_level support_level, void *data), const char *like, void *data)
	Ask for a list of modules, descriptions, use counts and status. More...
void	ast_update_use_count (void)
	Notify when usecount has been changed. More...

Variables
static const struct ast_module_info *	ast_module_info

Detailed Description

Asterisk module definitions.

This file contains the definitons for functions Asterisk modules should provide and some other module related functions.

Definition in file module.h.

Macro Definition Documentation

AST_MODULE_CONFIG

#define AST_MODULE_CONFIG   "modules.conf"

Module configuration file.

Definition at line 59 of file module.h.

AST_MODULE_INFO

#define AST_MODULE_INFO	(		keystr,
			flags_to_set,
			desc,
			fields...
	)

Examples

app_skel.c.

Definition at line 557 of file module.h.

AST_MODULE_INFO_STANDARD

#define AST_MODULE_INFO_STANDARD	(		keystr,
			desc
	)

Definition at line 581 of file module.h.

AST_MODULE_INFO_STANDARD_DEPRECATED

#define AST_MODULE_INFO_STANDARD_DEPRECATED	(		keystr,
			desc
	)

Definition at line 597 of file module.h.

AST_MODULE_INFO_STANDARD_EXTENDED

#define AST_MODULE_INFO_STANDARD_EXTENDED	(		keystr,
			desc
	)

Definition at line 589 of file module.h.

ast_module_ref

#define ast_module_ref

(

mod

)

__ast_module_ref(mod, __FILE__, __LINE__, __PRETTY_FUNCTION__)

Hold a reference to the module.

Parameters

mod	Module to reference

Returns

mod

Note

A module reference will prevent the module from being unloaded.

Definition at line 457 of file module.h.

ast_module_running_ref

#define ast_module_running_ref

(

mod

)

__ast_module_running_ref(mod, __FILE__, __LINE__, __PRETTY_FUNCTION__)

Hold a reference to the module if it is running.

Parameters

mod	Module to reference

Return values

mod	if running
NULL	if not running

The returned pointer should be released with ast_module_unref.

Note

A module reference will prevent the module from being unloaded.

Definition at line 469 of file module.h.

ast_module_shutdown_ref

#define ast_module_shutdown_ref

(

mod

)

__ast_module_shutdown_ref(mod, __FILE__, __LINE__, __PRETTY_FUNCTION__)

Prevent unload of the module before shutdown.

Parameters

mod	Module to hold

Note

This should not be balanced by a call to ast_module_unref.

Definition at line 478 of file module.h.

ast_module_unref

#define ast_module_unref

(

mod

)

__ast_module_unref(mod, __FILE__, __LINE__, __PRETTY_FUNCTION__)

Release a reference to the module.

Parameters

mod	Module to release

Definition at line 483 of file module.h.

ast_module_user_add

#define ast_module_user_add

(

chan

)

__ast_module_user_add(AST_MODULE_SELF, chan)

Definition at line 440 of file module.h.

ast_module_user_hangup_all

#define ast_module_user_hangup_all

(

)

__ast_module_user_hangup_all(AST_MODULE_SELF)

Definition at line 442 of file module.h.

ast_module_user_remove

#define ast_module_user_remove

(

user

)

__ast_module_user_remove(AST_MODULE_SELF, user)

Definition at line 441 of file module.h.

ast_register_application

#define ast_register_application	(		app,
			execute,
			synopsis,
			description
	)		ast_register_application2(app, execute, synopsis, description, AST_MODULE_SELF)

Register an application.

Parameters

app	Short name of the application
execute	a function callback to execute the application. It should return non-zero if the channel needs to be hung up.
synopsis	a short description (one line synopsis) of the application
description	long description with all of the details about the use of the application

This registers an application with Asterisk's internal application list.

Note

The individual applications themselves are responsible for registering and unregistering and unregistering their own CLI commands.

Return values

0	success
-1	failure.

Definition at line 624 of file module.h.

ast_register_application_xml

#define ast_register_application_xml	(		app,
			execute
	)		ast_register_application(app, execute, NULL, NULL)

Register an application using XML documentation.

Parameters

app	Short name of the application
execute	a function callback to execute the application. It should return non-zero if the channel needs to be hung up.

This registers an application with Asterisk's internal application list.

Note

The individual applications themselves are responsible for registering and unregistering and unregistering their own CLI commands.

Return values

0	success
-1	failure.

Examples

app_skel.c.

Definition at line 640 of file module.h.

ASTERISK_GPL_KEY

#define ASTERISK_GPL_KEY   "This paragraph is copyright (c) 2006 by Digium, Inc. \In order for your module to load, it must return this \key via a function called \"key\". Any code which \includes this paragraph must be licensed under the GNU \General Public License version 2 or later (at your \option). In addition to Digium's general reservations \of rights, Digium expressly reserves the right to \allow other parties to license this paragraph under \different terms. Any use of Digium, Inc. trademarks or \logos (including \"Asterisk\" or \"Digium\") without \express written permission of Digium, Inc. is prohibited.\n"

The text the key() function should return.

Examples

app_skel.c.

Definition at line 46 of file module.h.

SCOPED_MODULE_USE

#define SCOPED_MODULE_USE

(

module

)

RAII_VAR(struct ast_module *, __self__ ## __LINE__, ast_module_ref(module), ast_module_unref)

Macro to safely ref and unref the self module for the current scope

Definition at line 679 of file module.h.

Enumeration Type Documentation

ast_module_flags

enum ast_module_flags

Enumerator
AST_MODFLAG_DEFAULT
AST_MODFLAG_GLOBAL_SYMBOLS
AST_MODFLAG_LOAD_ORDER

Definition at line 328 of file module.h.

                      {
    AST_MODFLAG_DEFAULT = 0,
    AST_MODFLAG_GLOBAL_SYMBOLS = (1 << 0),
    AST_MODFLAG_LOAD_ORDER = (1 << 1),
};

ast_module_helper_type

enum ast_module_helper_type

Used to specify which modules should be returned by ast_module_helper.

Enumerator
AST_MODULE_HELPER_LOADED	Modules that are loaded by dlopen.
AST_MODULE_HELPER_RELOAD	Running modules that include a reload callback.
AST_MODULE_HELPER_LOAD	Modules that can be loaded or started.
AST_MODULE_HELPER_UNLOAD	Modules that can be unloaded.
AST_MODULE_HELPER_RUNNING	Running modules

Definition at line 127 of file module.h.

                            {
    /*! Modules that are loaded by dlopen. */
    AST_MODULE_HELPER_LOADED = 0,
    /*! Running modules that include a reload callback. */
    AST_MODULE_HELPER_RELOAD = 1,
    /*! Modules that can be loaded or started. */
    AST_MODULE_HELPER_LOAD,
    /*! Modules that can be unloaded. */
    AST_MODULE_HELPER_UNLOAD,
    /*! Running modules */
    AST_MODULE_HELPER_RUNNING,
};

ast_module_load_priority

enum ast_module_load_priority

Enumerator
AST_MODPRI_REALTIME_DEPEND	Dependency for a realtime driver
AST_MODPRI_REALTIME_DEPEND2	Second level dependency for a realtime driver (func_curl needs res_curl, but is needed by res_config_curl)
AST_MODPRI_REALTIME_DRIVER	A realtime driver, which provides configuration services for other modules
AST_MODPRI_CORE	A core module originally meant to start between preload and load.
AST_MODPRI_TIMING	Dependency for a channel (MOH needs timing interfaces to be fully loaded)
AST_MODPRI_CHANNEL_DEPEND	Channel driver dependency (may depend upon realtime, e.g. MOH)
AST_MODPRI_CHANNEL_DRIVER	Channel drivers (provide devicestate)
AST_MODPRI_APP_DEPEND	Dependency for an application
AST_MODPRI_DEVSTATE_PROVIDER	Applications and other modules that provide devicestate (e.g. meetme)
AST_MODPRI_DEVSTATE_PLUGIN	Plugin for a module that provides devstate (e.g. res_calendar_*)
AST_MODPRI_CDR_DRIVER	CDR or CEL backend
AST_MODPRI_DEFAULT	Modules not otherwise defined (such as most apps) will load here
AST_MODPRI_DEVSTATE_CONSUMER	Certain modules, which consume devstate, need to load after all others (e.g. app_queue)

Definition at line 334 of file module.h.

                              {
    AST_MODPRI_REALTIME_DEPEND =    10,  /*!< Dependency for a realtime driver */
    AST_MODPRI_REALTIME_DEPEND2 =   20,  /*!< Second level dependency for a realtime driver (func_curl needs res_curl, but is needed by res_config_curl) */
    AST_MODPRI_REALTIME_DRIVER =    30,  /*!< A realtime driver, which provides configuration services for other modules */
    AST_MODPRI_CORE =               40,  /*!< A core module originally meant to start between preload and load. */
    AST_MODPRI_TIMING =             50,  /*!< Dependency for a channel (MOH needs timing interfaces to be fully loaded) */
    AST_MODPRI_CHANNEL_DEPEND =     60,  /*!< Channel driver dependency (may depend upon realtime, e.g. MOH) */
    AST_MODPRI_CHANNEL_DRIVER =     70,  /*!< Channel drivers (provide devicestate) */
    AST_MODPRI_APP_DEPEND =         80,  /*!< Dependency for an application */
    AST_MODPRI_DEVSTATE_PROVIDER =  90,  /*!< Applications and other modules that _provide_ devicestate (e.g. meetme) */
    AST_MODPRI_DEVSTATE_PLUGIN =   100,  /*!< Plugin for a module that provides devstate (e.g. res_calendar_*) */
    AST_MODPRI_CDR_DRIVER =        110,  /*!< CDR or CEL backend */
    AST_MODPRI_DEFAULT =           128,  /*!< Modules not otherwise defined (such as most apps) will load here */
    AST_MODPRI_DEVSTATE_CONSUMER = 150,  /*!< Certain modules, which consume devstate, need to load after all others (e.g. app_queue) */
};

ast_module_load_result

enum ast_module_load_result

Enumerator
AST_MODULE_LOAD_SUCCESS	Module is loaded and configured.
AST_MODULE_LOAD_DECLINE	Module has failed to load, may be in an inconsistent state. This value is used when a module fails to start but does not risk system-wide stability. Declined modules will prevent any other dependent module from starting.
AST_MODULE_LOAD_SKIP
AST_MODULE_LOAD_PRIORITY
AST_MODULE_LOAD_FAILURE	Module could not be loaded properly. This return should only be returned by modules for unrecoverable failures that cause the whole system to become unstable. In almost all cases AST_MODULE_LOAD_DECLINE should be used instead. Warning Returning this code from any module will cause startup to abort. If startup is already completed this code has the same effect as AST_MODULE_LOAD_DECLINE.

Definition at line 68 of file module.h.

                            {
    /*! Module is loaded and configured. */
    AST_MODULE_LOAD_SUCCESS = 0,
    /*!
     * \brief Module has failed to load, may be in an inconsistent state.
     *
     * This value is used when a module fails to start but does not risk
     * system-wide stability.  Declined modules will prevent any other
     * dependent module from starting.
     */
    AST_MODULE_LOAD_DECLINE = 1,
    /*! \internal
     * \brief Module was skipped for some reason.
     *
     * \note For loader.c use only. Should never be returned by modules.
     */
    AST_MODULE_LOAD_SKIP = 2,
    /*! \internal
     * \brief Module is not loaded yet, but is added to priority list.
     *
     * \note For loader.c use only. Should never be returned by modules.
     */
    AST_MODULE_LOAD_PRIORITY = 3,
    /*!
     * \brief Module could not be loaded properly.
     *
     * This return should only be returned by modules for unrecoverable
     * failures that cause the whole system to become unstable.  In almost
     * all cases \ref AST_MODULE_LOAD_DECLINE should be used instead.
     *
     * \warning Returning this code from any module will cause startup to abort.
     * If startup is already completed this code has the same effect as
     * \ref AST_MODULE_LOAD_DECLINE.
     */
    AST_MODULE_LOAD_FAILURE = -1,
};

ast_module_reload_result

enum ast_module_reload_result

Possible return types for ast_module_reload.

Since

12

Enumerator
AST_MODULE_RELOAD_SUCCESS	The module was reloaded succesfully
AST_MODULE_RELOAD_QUEUED	The module reload request was queued
AST_MODULE_RELOAD_NOT_FOUND	The requested module was not found
AST_MODULE_RELOAD_ERROR	An error occurred while reloading the module
AST_MODULE_RELOAD_IN_PROGRESS	A module reload request is already in progress
AST_MODULE_RELOAD_UNINITIALIZED	The module has not been initialized
AST_MODULE_RELOAD_NOT_IMPLEMENTED	This module doesn't support reloading

Definition at line 109 of file module.h.

                              {
    AST_MODULE_RELOAD_SUCCESS = 0,      /*!< The module was reloaded succesfully */
    AST_MODULE_RELOAD_QUEUED,           /*!< The module reload request was queued */
    AST_MODULE_RELOAD_NOT_FOUND,        /*!< The requested module was not found */
    AST_MODULE_RELOAD_ERROR,            /*!< An error occurred while reloading the module */
    AST_MODULE_RELOAD_IN_PROGRESS,      /*!< A module reload request is already in progress */
    AST_MODULE_RELOAD_UNINITIALIZED,    /*!< The module has not been initialized */
    AST_MODULE_RELOAD_NOT_IMPLEMENTED,  /*!< This module doesn't support reloading */
};

ast_module_support_level

enum ast_module_support_level

Enumerator
AST_MODULE_SUPPORT_UNKNOWN
AST_MODULE_SUPPORT_CORE
AST_MODULE_SUPPORT_EXTENDED
AST_MODULE_SUPPORT_DEPRECATED

Definition at line 119 of file module.h.

                              {
    AST_MODULE_SUPPORT_UNKNOWN,
    AST_MODULE_SUPPORT_CORE,
    AST_MODULE_SUPPORT_EXTENDED,
    AST_MODULE_SUPPORT_DEPRECATED,
};

ast_module_unload_mode

enum ast_module_unload_mode

Enumerator
AST_FORCE_SOFT	Softly unload a module, only if not in use
AST_FORCE_FIRM	Firmly unload a module, even if in use
AST_FORCE_HARD	as FIRM, plus dlclose() on the module. Not recommended as it may cause crashes

Definition at line 61 of file module.h.

                            {
    AST_FORCE_SOFT = 0, /*!< Softly unload a module, only if not in use */
    AST_FORCE_FIRM = 1, /*!< Firmly unload a module, even if in use */
    AST_FORCE_HARD = 2, /*!< as FIRM, plus dlclose() on the module. Not recommended
                as it may cause crashes */
};

Function Documentation

__ast_module_ref()

struct ast_module * __ast_module_ref	(	struct ast_module *	mod,
		const char *	file,
		int	line,
		const char *	func
	)

Definition at line 2877 of file loader.c.

{
    if (!mod) {
        return NULL;
    }
 
    if (mod->ref_debug) {
        __ao2_ref(mod->ref_debug, +1, "", file, line, func);
    }
 
    ast_atomic_fetchadd_int(&mod->usecount, +1);
    ast_update_use_count();
 
    return mod;
}

References __ao2_ref(), ast_atomic_fetchadd_int(), ast_update_use_count(), make_ari_stubs::file, NULL, ast_module::ref_debug, and ast_module::usecount.

Referenced by __ast_module_running_ref(), and __ast_module_shutdown_ref().

__ast_module_running_ref()

struct ast_module * __ast_module_running_ref	(	struct ast_module *	mod,
		const char *	file,
		int	line,
		const char *	func
	)

Definition at line 2893 of file loader.c.

{
    if (!mod || !mod->flags.running) {
        return NULL;
    }
 
    return __ast_module_ref(mod, file, line, func);
}

References __ast_module_ref(), make_ari_stubs::file, ast_module::flags, NULL, and ast_module::running.

__ast_module_shutdown_ref()

void __ast_module_shutdown_ref	(	struct ast_module *	mod,
		const char *	file,
		int	line,
		const char *	func
	)

Definition at line 2903 of file loader.c.

{
    if (!mod || mod->flags.keepuntilshutdown) {
        return;
    }
 
    __ast_module_ref(mod, file, line, func);
    mod->flags.keepuntilshutdown = 1;
}

References __ast_module_ref(), make_ari_stubs::file, ast_module::flags, and ast_module::keepuntilshutdown.

__ast_module_unref()

void __ast_module_unref	(	struct ast_module *	mod,
		const char *	file,
		int	line,
		const char *	func
	)

Definition at line 2913 of file loader.c.

{
    if (!mod) {
        return;
    }
 
    if (mod->ref_debug) {
        __ao2_ref(mod->ref_debug, -1, "", file, line, func);
    }
 
    ast_atomic_fetchadd_int(&mod->usecount, -1);
    ast_update_use_count();
}

References __ao2_ref(), ast_atomic_fetchadd_int(), ast_update_use_count(), make_ari_stubs::file, ast_module::ref_debug, and ast_module::usecount.

__ast_module_user_add()

struct ast_module_user * __ast_module_user_add	(	struct ast_module *	mod,
		struct ast_channel *	chan
	)

Definition at line 809 of file loader.c.

{
    struct ast_module_user *u;
 
    u = ast_calloc(1, sizeof(*u));
    if (!u) {
        return NULL;
    }
 
    u->chan = chan;
 
    AST_LIST_LOCK(&mod->users);
    AST_LIST_INSERT_HEAD(&mod->users, u, entry);
    AST_LIST_UNLOCK(&mod->users);
 
    if (mod->ref_debug) {
        ao2_ref(mod->ref_debug, +1);
    }
 
    ast_atomic_fetchadd_int(&mod->usecount, +1);
 
    ast_update_use_count();
 
    return u;
}

References ao2_ref, ast_atomic_fetchadd_int(), ast_calloc, AST_LIST_INSERT_HEAD, AST_LIST_LOCK, AST_LIST_UNLOCK, ast_update_use_count(), ast_module_user::chan, ast_module_user::entry, NULL, ast_module::ref_debug, ast_module::usecount, and ast_module::users.

Referenced by ast_func_read(), ast_func_read2(), ast_func_write(), and pbx_exec().

__ast_module_user_hangup_all()

void __ast_module_user_hangup_all

(

struct ast_module *

mod

)

Definition at line 862 of file loader.c.

{
    struct ast_module_user *u;
 
    AST_LIST_LOCK(&mod->users);
    while ((u = AST_LIST_REMOVE_HEAD(&mod->users, entry))) {
        if (u->chan) {
            ast_softhangup(u->chan, AST_SOFTHANGUP_APPUNLOAD);
        }
 
        if (mod->ref_debug) {
            ao2_ref(mod->ref_debug, -1);
        }
 
        ast_atomic_fetchadd_int(&mod->usecount, -1);
        ast_free(u);
    }
    AST_LIST_UNLOCK(&mod->users);
 
    ast_update_use_count();
}

References ao2_ref, ast_atomic_fetchadd_int(), ast_free, AST_LIST_LOCK, AST_LIST_REMOVE_HEAD, AST_LIST_UNLOCK, ast_softhangup(), AST_SOFTHANGUP_APPUNLOAD, ast_update_use_count(), ast_module_user::chan, ast_module_user::entry, ast_module::ref_debug, ast_module::usecount, and ast_module::users.

Referenced by auto_unload_resource().

__ast_module_user_remove()

void __ast_module_user_remove	(	struct ast_module *	mod,
		struct ast_module_user *	u
	)

Definition at line 835 of file loader.c.

{
    if (!u) {
        return;
    }
 
    AST_LIST_LOCK(&mod->users);
    u = AST_LIST_REMOVE(&mod->users, u, entry);
    AST_LIST_UNLOCK(&mod->users);
    if (!u) {
        /*
         * Was not in the list.  Either a bad pointer or
         * __ast_module_user_hangup_all() has been called.
         */
        return;
    }
 
    if (mod->ref_debug) {
        ao2_ref(mod->ref_debug, -1);
    }
 
    ast_atomic_fetchadd_int(&mod->usecount, -1);
    ast_free(u);
 
    ast_update_use_count();
}

References ao2_ref, ast_atomic_fetchadd_int(), ast_free, AST_LIST_LOCK, AST_LIST_REMOVE, AST_LIST_UNLOCK, ast_update_use_count(), ast_module_user::entry, ast_module::ref_debug, ast_module::usecount, and ast_module::users.

Referenced by ast_func_read(), ast_func_read2(), ast_func_write(), and pbx_exec().

ast_load_resource()

enum ast_module_load_result ast_load_resource

(

const char *

resource_name

)

Load a module.

Parameters

resource_name

The name of the module to load.

This function is run by the PBX to load the modules. It performs all loading and initialization tasks. Basically, to load a module, just give it the name of the module and it will do the rest.

Returns

See possible enum values for ast_module_load_result.

Definition at line 1987 of file loader.c.

{
    struct ast_module *mod;
    enum ast_module_load_result res;
 
    /* If we're trying to load a module that previously declined to load,
     * transparently unload it first so we dlclose, then dlopen it afresh.
     * Otherwise, we won't actually load a (potentially) updated module. */
    mod = find_resource(resource_name, 0);
    if (mod && mod->flags.declined) {
        ast_debug(1, "Module %s previously declined to load, unloading it first before loading again\n", resource_name);
        ast_unload_resource(resource_name, 0);
    }
 
    AST_DLLIST_LOCK(&module_list);
    res = load_resource(resource_name, 0, NULL, 0, 0);
    if (!res) {
        ast_test_suite_event_notify("MODULE_LOAD", "Message: %s", resource_name);
    }
    AST_DLLIST_UNLOCK(&module_list);
 
    return res;
}

References ast_debug, AST_DLLIST_LOCK, AST_DLLIST_UNLOCK, ast_test_suite_event_notify, ast_unload_resource(), ast_module::declined, find_resource(), ast_module::flags, load_resource(), and NULL.

Referenced by ast_ari_asterisk_load_module(), ast_refresh_resource(), auto_unload_resource(), handle_load(), and manager_moduleload().

ast_loader_register()

int ast_loader_register

(

int(*)(void)

updater

)

Add a procedure to be run when modules have been updated.

Parameters

updater

The function to run when modules have been updated.

This function adds the given function to a linked list of functions to be run when the modules are updated.

Return values

0	on success
-1	on failure.

Definition at line 2845 of file loader.c.

{
    struct loadupdate *tmp;
 
    if (!(tmp = ast_malloc(sizeof(*tmp))))
        return -1;
 
    tmp->updater = v;
    AST_LIST_LOCK(&updaters);
    AST_LIST_INSERT_HEAD(&updaters, tmp, entry);
    AST_LIST_UNLOCK(&updaters);
 
    return 0;
}

References AST_LIST_INSERT_HEAD, AST_LIST_LOCK, AST_LIST_UNLOCK, ast_malloc, loadupdate::entry, and loadupdate::updater.

ast_loader_unregister()

int ast_loader_unregister

(

int(*)(void)

updater

)

Remove a procedure to be run when modules are updated.

Parameters

updater

The updater function to unregister.

This removes the given function from the updater list.

Return values

0	on success
-1	on failure.

Definition at line 2860 of file loader.c.

{
    struct loadupdate *cur;
 
    AST_LIST_LOCK(&updaters);
    AST_LIST_TRAVERSE_SAFE_BEGIN(&updaters, cur, entry) {
        if (cur->updater == v)  {
            AST_LIST_REMOVE_CURRENT(entry);
            break;
        }
    }
    AST_LIST_TRAVERSE_SAFE_END;
    AST_LIST_UNLOCK(&updaters);
 
    return cur ? 0 : -1;
}

References AST_LIST_LOCK, AST_LIST_REMOVE_CURRENT, AST_LIST_TRAVERSE_SAFE_BEGIN, AST_LIST_TRAVERSE_SAFE_END, AST_LIST_UNLOCK, loadupdate::entry, and loadupdate::updater.

ast_module_check()

int ast_module_check

(

const char *

name

)

Check if module with the name given is loaded.

Parameters

name	Module name, like "chan_pjsip.so"

Return values

1	if true
0	if false

Check if module with the name given is loaded.

Definition at line 2832 of file loader.c.

{
    struct ast_module *cur;
 
    if (ast_strlen_zero(name))
        return 0;       /* FALSE */
 
    cur = find_resource(name, 1);
 
    return (cur != NULL);
}

References ast_strlen_zero(), find_resource(), name, and NULL.

Referenced by ast_ari_asterisk_get_module(), ast_ari_asterisk_load_module(), ast_ari_asterisk_reload_module(), ast_ari_asterisk_unload_module(), AST_TEST_DEFINE(), ifmodule_read(), load_module(), and manager_modulecheck().

ast_module_helper()

char * ast_module_helper	(	const char *	line,
		const char *	word,
		int	pos,
		int	state,
		int	rpos,
		enum ast_module_helper_type	type
	)

Match modules names for the Asterisk cli.

Parameters

line	Unused by this function, but this should be the line we are matching.
word	The partial name to match.
pos	The position the word we are completing is in.
state	The possible match to return.
rpos	The position we should be matching. This should be the same as pos.
type	The type of action that will be performed by CLI.

Return values

A	possible completion of the partial match.
NULL	if no matches were found or Asterisk is not yet fully booted.

Definition at line 1537 of file loader.c.

{
    struct ast_module *mod;
    int which = 0;
    int wordlen = strlen(word);
    char *ret = NULL;
 
    if (pos != rpos) {
        return NULL;
    }
 
    /* Tab completion can't be used during startup, or CLI and loader will deadlock. */
    if (!ast_test_flag(&ast_options, AST_OPT_FLAG_FULLY_BOOTED)) {
        return NULL;
    }
 
    if (type == AST_MODULE_HELPER_LOAD) {
        module_load_helper(word);
 
        return NULL;
    }
 
    AST_DLLIST_LOCK(&module_list);
    AST_DLLIST_TRAVERSE(&module_list, mod, entry) {
        if (!module_matches_helper_type(mod, type)) {
            continue;
        }
 
        if (!strncasecmp(word, mod->resource, wordlen) && ++which > state) {
            ret = ast_strdup(mod->resource);
            break;
        }
    }
    AST_DLLIST_UNLOCK(&module_list);
 
    return ret;
}

References AST_DLLIST_LOCK, AST_DLLIST_TRAVERSE, AST_DLLIST_UNLOCK, AST_MODULE_HELPER_LOAD, AST_OPT_FLAG_FULLY_BOOTED, ast_options, ast_strdup, ast_test_flag, ast_module::entry, module_load_helper(), module_matches_helper_type(), NULL, ast_module::resource, and type.

Referenced by handle_debug(), handle_load(), handle_modlist(), handle_refresh(), handle_reload(), handle_trace(), and handle_unload().

ast_module_name()

const char * ast_module_name

(

const struct ast_module *

mod

)

Get the name of a module.

Parameters

mod	A pointer to the module.

Returns

the name of the module

Return values

NULL	if mod or mod->info is NULL

Definition at line 624 of file loader.c.

{
    if (!mod || !mod->info) {
        return NULL;
    }
 
    return mod->info->name;
}

References ast_module::info, ast_module_info::name, and NULL.

Referenced by acf_retrieve_docs(), ast_register_application2(), graceful_unload_possible(), resource_list_recursive_decline(), start_resource_list(), and unload_dynamic_module().

ast_module_register()

void ast_module_register

(

const struct ast_module_info *

info

)

Definition at line 668 of file loader.c.

{
    struct ast_module *mod;
 
    if (!loader_ready) {
        mod = ast_std_calloc(1, sizeof(*mod) + strlen(info->name) + 1);
        if (!mod) {
            /* We haven't even reached main() yet, if we can't
             * allocate memory at this point just give up. */
            fprintf(stderr, "Allocation failure during startup.\n");
            exit(2);
        }
        strcpy(mod->resource, info->name); /* safe */
        mod->info = info;
        mod->flags.builtin = 1;
        AST_DLLIST_INSERT_TAIL(&builtin_module_list, mod, entry);
 
        /* ast_module_register for built-in modules is run again during module preload. */
        return;
    }
 
    /*
     * This lock protects resource_being_loaded as well as the module
     * list.  Normally we already have a lock on module_list when we
     * begin the load but locking again from here prevents corruption
     * if an asterisk module is dlopen'ed from outside the module loader.
     */
    AST_DLLIST_LOCK(&module_list);
    mod = resource_being_loaded;
    if (!mod) {
        AST_DLLIST_UNLOCK(&module_list);
        return;
    }
 
    ast_debug(5, "Registering module %s\n", info->name);
 
    /* This tells load_dynamic_module that we're registered. */
    resource_being_loaded = NULL;
 
    mod->info = info;
    if (ast_opt_ref_debug) {
        mod->ref_debug = ao2_t_alloc_options(0, NULL, AO2_ALLOC_OPT_LOCK_NOLOCK, info->name);
    }
    AST_LIST_HEAD_INIT(&mod->users);
    AST_VECTOR_INIT(&mod->requires, 0);
    AST_VECTOR_INIT(&mod->optional_modules, 0);
    AST_VECTOR_INIT(&mod->enhances, 0);
    AST_VECTOR_INIT(&mod->reffed_deps, 0);
 
    AST_DLLIST_INSERT_TAIL(&module_list, mod, entry);
    AST_DLLIST_UNLOCK(&module_list);
 
    /* give the module a copy of its own handle, for later use in registrations and the like */
    *((struct ast_module **) &(info->self)) = mod;
 
#if defined(HAVE_PERMANENT_DLOPEN)
    if (mod->flags.builtin != 1) {
        struct info_list_obj *obj_tmp = ao2_find(info_list, info->name,
            OBJ_SEARCH_KEY);
 
        if (!obj_tmp) {
            obj_tmp = info_list_obj_alloc(info->name, info);
            if (obj_tmp) {
                ao2_link(info_list, obj_tmp);
                ao2_ref(obj_tmp, -1);
            }
        } else {
            ao2_ref(obj_tmp, -1);
        }
    }
#endif
}

References AO2_ALLOC_OPT_LOCK_NOLOCK, ao2_find, ao2_link, ao2_ref, ao2_t_alloc_options, ast_debug, AST_DLLIST_INSERT_TAIL, AST_DLLIST_LOCK, AST_DLLIST_UNLOCK, AST_LIST_HEAD_INIT, ast_opt_ref_debug, ast_std_calloc(), AST_VECTOR_INIT, ast_module::builtin, builtin_module_list, ast_module::enhances, ast_module::entry, ast_module::flags, sip_to_pjsip::info(), ast_module::info, loader_ready, NULL, OBJ_SEARCH_KEY, ast_module::optional_modules, ast_module::ref_debug, ast_module::reffed_deps, ast_module::requires, ast_module::resource, resource_being_loaded, and ast_module::users.

Referenced by loader_builtin_init().

ast_module_reload()

enum ast_module_reload_result ast_module_reload

(

const char *

name

)

Reload asterisk modules.

Parameters

name	the name of the module to reload

This function reloads the specified module, or if no modules are specified, it will reload all loaded modules.

Note

Modules are reloaded using their reload() functions, not unloading them and loading them again.

Return values

The	ast_module_reload_result status of the module load request

Definition at line 1730 of file loader.c.

{
    struct ast_module *cur;
    enum ast_module_reload_result res = AST_MODULE_RELOAD_NOT_FOUND;
    size_t name_baselen = name ? resource_name_baselen(name) : 0;
 
    /* If we aren't fully booted, we just pretend we reloaded but we queue this
       up to run once we are booted up. */
    if (!modules_loaded) {
        queue_reload_request(name);
        res = AST_MODULE_RELOAD_QUEUED;
        goto module_reload_exit;
    }
 
    if (ast_mutex_trylock(&reloadlock)) {
        ast_verb(3, "The previous reload command didn't finish yet\n");
        res = AST_MODULE_RELOAD_IN_PROGRESS;
        goto module_reload_exit;
    }
    ast_sd_notify("RELOADING=1");
    ast_lastreloadtime = ast_tvnow();
 
    if (ast_opt_lock_confdir) {
        int try;
        int lockres;
        for (try = 1, lockres = AST_LOCK_TIMEOUT; try < 6 && (lockres == AST_LOCK_TIMEOUT); try++) {
            lockres = ast_lock_path(ast_config_AST_CONFIG_DIR);
            if (lockres == AST_LOCK_TIMEOUT) {
                ast_log(LOG_WARNING, "Failed to grab lock on %s, try %d\n", ast_config_AST_CONFIG_DIR, try);
            }
        }
        if (lockres != AST_LOCK_SUCCESS) {
            ast_log(AST_LOG_WARNING, "Cannot grab lock on %s\n", ast_config_AST_CONFIG_DIR);
            res = AST_MODULE_RELOAD_ERROR;
            goto module_reload_done;
        }
    }
 
    AST_DLLIST_LOCK(&module_list);
    AST_DLLIST_TRAVERSE(&module_list, cur, entry) {
        const struct ast_module_info *info = cur->info;
 
        if (name && resource_name_match(name, name_baselen, cur->resource)) {
            continue;
        }
 
        if (!cur->flags.running || cur->flags.declined) {
            if (res == AST_MODULE_RELOAD_NOT_FOUND) {
                res = AST_MODULE_RELOAD_UNINITIALIZED;
            }
            if (!name) {
                continue;
            }
            break;
        }
 
        if (!info->reload) {    /* cannot be reloaded */
            if (res == AST_MODULE_RELOAD_NOT_FOUND) {
                res = AST_MODULE_RELOAD_NOT_IMPLEMENTED;
            }
            if (!name) {
                continue;
            }
            break;
        }
        ast_verb(3, "Reloading module '%s' (%s)\n", cur->resource, info->description);
        if (info->reload() == AST_MODULE_LOAD_SUCCESS) {
            res = AST_MODULE_RELOAD_SUCCESS;
        } else if (res == AST_MODULE_RELOAD_NOT_FOUND) {
            res = AST_MODULE_RELOAD_ERROR;
        }
        if (name) {
            break;
        }
    }
    AST_DLLIST_UNLOCK(&module_list);
 
    if (ast_opt_lock_confdir) {
        ast_unlock_path(ast_config_AST_CONFIG_DIR);
    }
module_reload_done:
    ast_mutex_unlock(&reloadlock);
    ast_sd_notify("READY=1");
 
module_reload_exit:
    publish_reload_message(name, res);
    return res;
}

References ast_config_AST_CONFIG_DIR, AST_DLLIST_LOCK, AST_DLLIST_TRAVERSE, AST_DLLIST_UNLOCK, ast_lastreloadtime, ast_lock_path(), AST_LOCK_SUCCESS, AST_LOCK_TIMEOUT, ast_log, AST_LOG_WARNING, AST_MODULE_LOAD_SUCCESS, AST_MODULE_RELOAD_ERROR, AST_MODULE_RELOAD_IN_PROGRESS, AST_MODULE_RELOAD_NOT_FOUND, AST_MODULE_RELOAD_NOT_IMPLEMENTED, AST_MODULE_RELOAD_QUEUED, AST_MODULE_RELOAD_SUCCESS, AST_MODULE_RELOAD_UNINITIALIZED, ast_mutex_trylock, ast_mutex_unlock, ast_opt_lock_confdir, ast_sd_notify(), ast_tvnow(), ast_unlock_path(), ast_verb, ast_module::declined, ast_module::entry, ast_module::flags, sip_to_pjsip::info(), ast_module::info, LOG_WARNING, modules_loaded, name, publish_reload_message(), queue_reload_request(), reloadlock, ast_module::resource, resource_name_baselen(), resource_name_match(), and ast_module::running.

Referenced by action_reload(), action_updateconfig(), ast_ari_asterisk_reload_module(), ast_process_pending_reloads(), handle_cli_ael_reload(), handle_cli_moh_reload(), handle_core_reload(), handle_reload(), manager_moduleload(), monitor_sig_flags(), and reload_exec().

ast_module_support_level_to_string()

const char * ast_module_support_level_to_string

(

enum ast_module_support_level

support_level

)

Definition at line 2934 of file loader.c.

{
    return support_level_map[support_level];
}

References support_level_map.

Referenced by identify_module(), modlist_modentry(), and process_module_list().

ast_module_unregister()

void ast_module_unregister

(

const struct ast_module_info *

info

)

Definition at line 777 of file loader.c.

{
    struct ast_module *mod = NULL;
 
    /* it is assumed that the users list in the module structure
       will already be empty, or we cannot have gotten to this
       point
    */
    AST_DLLIST_LOCK(&module_list);
    AST_DLLIST_TRAVERSE_BACKWARDS_SAFE_BEGIN(&module_list, mod, entry) {
        if (mod->info == info) {
            AST_DLLIST_REMOVE_CURRENT(entry);
            break;
        }
    }
    AST_DLLIST_TRAVERSE_BACKWARDS_SAFE_END;
    AST_DLLIST_UNLOCK(&module_list);
 
    if (mod && !mod->usecount) {
        /*
         * We are intentionally leaking mod if usecount is not zero.
         * This is necessary if the module is being forcefully unloaded.
         * In addition module_destroy is not safe to run after exit()
         * is called.  ast_module_unregister is run during cleanup of
         * the process when libc releases each module's shared object
         * library.
         */
        ast_debug(5, "Unregistering module %s\n", info->name);
        module_destroy(mod);
    }
}

References ast_debug, AST_DLLIST_LOCK, AST_DLLIST_REMOVE_CURRENT, AST_DLLIST_TRAVERSE_BACKWARDS_SAFE_BEGIN, AST_DLLIST_TRAVERSE_BACKWARDS_SAFE_END, AST_DLLIST_UNLOCK, ast_module::entry, sip_to_pjsip::info(), ast_module::info, module_destroy(), NULL, and ast_module::usecount.

ast_refresh_resource()

int ast_refresh_resource	(	const char *	resource_name,
		enum ast_module_unload_mode	force,
		int	recursive
	)

Unload and load a module again.

Parameters

resource_name	The name of the module to unload.
ast_module_unload_mode	The force flag. This should be set using one of the AST_FORCE flags.
recursive	Attempt to recursively unload any dependents of this module if that will allow the module to unload, and load them back again afterwards.

Return values

0	on success.
1	on error unloading modules.
-1	on error loading modules back.

Definition at line 1416 of file loader.c.

{
    if (recursive) {
        /* Recursively unload dependents of this module and then load them back again */
        int res, i;
        struct ast_vector_const_string dependents;
        AST_VECTOR_INIT(&dependents, 0);
        res = auto_unload_resource(resource_name, force, recursive, &dependents);
        if (res) {
            AST_VECTOR_FREE(&dependents);
            return 1;
        }
        /* Start by loading the target again. */
        if (ast_load_resource(resource_name)) {
            ast_log(LOG_WARNING, "Failed to load module '%s' again automatically\n", resource_name);
            AST_VECTOR_FREE(&dependents);
            return -1;
        }
        res = 0;
        /* Finally, load again any modules we had to unload in order to refresh the target.
         * We must load modules in the reverse order that we unloaded them,
         * to preserve dependency requirements. */
        for (i = 0; i < AST_VECTOR_SIZE(&dependents); i++) {
            const char *depname = AST_VECTOR_GET(&dependents, i);
            int mres = ast_load_resource(depname);
            if (mres) {
                ast_log(LOG_WARNING, "Could not load module '%s' again automatically\n", depname);
            }
            res |= mres;
        }
        AST_VECTOR_FREE(&dependents);
        return res ? -1 : 0;
    }
 
    /* Simple case: just unload and load the module again */
    if (ast_unload_resource(resource_name, force)) {
        return 1;
    }
    return ast_load_resource(resource_name);
}

References ast_load_resource(), ast_log, ast_unload_resource(), AST_VECTOR_FREE, AST_VECTOR_GET, AST_VECTOR_INIT, AST_VECTOR_SIZE, auto_unload_resource(), and LOG_WARNING.

Referenced by handle_refresh(), and manager_moduleload().

ast_register_application2()

int ast_register_application2	(	const char *	app,
		int(*)(struct ast_channel *, const char *)	execute,
		const char *	synopsis,
		const char *	description,
		void *	mod
	)

Register an application.

Parameters

app	Short name of the application
execute	a function callback to execute the application. It should return non-zero if the channel needs to be hung up.
synopsis	a short description (one line synopsis) of the application
description	long description with all of the details about the use of the application
mod	module this application belongs to

This registers an application with Asterisk's internal application list.

Note

The individual applications themselves are responsible for registering and unregistering and unregistering their own CLI commands.

Return values

0	success
-1	failure.

Register an application.

Definition at line 104 of file pbx_app.c.

{
    struct ast_app *tmp;
    struct ast_app *cur;
    int length;
#ifdef AST_XML_DOCS
    char *tmpxml;
#endif
 
    AST_RWLIST_WRLOCK(&apps);
    cur = pbx_findapp_nolock(app);
    if (cur) {
        ast_log(LOG_WARNING, "Already have an application '%s'\n", app);
        AST_RWLIST_UNLOCK(&apps);
        return -1;
    }
 
    length = sizeof(*tmp) + strlen(app) + 1;
 
    if (!(tmp = ast_calloc(1, length))) {
        AST_RWLIST_UNLOCK(&apps);
        return -1;
    }
 
    if (ast_string_field_init(tmp, 128)) {
        AST_RWLIST_UNLOCK(&apps);
        ast_free(tmp);
        return -1;
    }
 
    strcpy(tmp->name, app);
    tmp->execute = execute;
    tmp->module = mod;
 
#ifdef AST_XML_DOCS
    /* Try to lookup the docs in our XML documentation database */
    if (ast_strlen_zero(synopsis) && ast_strlen_zero(description)) {
        /* load synopsis */
        tmpxml = ast_xmldoc_build_synopsis("application", app, ast_module_name(tmp->module));
        ast_string_field_set(tmp, synopsis, tmpxml);
        ast_free(tmpxml);
 
        /* load since */
        tmpxml = ast_xmldoc_build_since("application", app, ast_module_name(tmp->module));
        ast_string_field_set(tmp, since, tmpxml);
        ast_free(tmpxml);
 
        /* load description */
        tmpxml = ast_xmldoc_build_description("application", app, ast_module_name(tmp->module));
        ast_string_field_set(tmp, description, tmpxml);
        ast_free(tmpxml);
 
        /* load syntax */
        tmpxml = ast_xmldoc_build_syntax("application", app, ast_module_name(tmp->module));
        ast_string_field_set(tmp, syntax, tmpxml);
        ast_free(tmpxml);
 
        /* load arguments */
        tmpxml = ast_xmldoc_build_arguments("application", app, ast_module_name(tmp->module));
        ast_string_field_set(tmp, arguments, tmpxml);
        ast_free(tmpxml);
 
        /* load seealso */
        tmpxml = ast_xmldoc_build_seealso("application", app, ast_module_name(tmp->module));
        ast_string_field_set(tmp, seealso, tmpxml);
        ast_free(tmpxml);
        tmp->docsrc = AST_XML_DOC;
    } else {
#endif
        ast_string_field_set(tmp, synopsis, synopsis);
        ast_string_field_set(tmp, description, description);
#ifdef AST_XML_DOCS
        tmp->docsrc = AST_STATIC_DOC;
    }
#endif
 
    /* Store in alphabetical order */
    AST_RWLIST_TRAVERSE_SAFE_BEGIN(&apps, cur, list) {
        if (strcasecmp(tmp->name, cur->name) < 0) {
            AST_RWLIST_INSERT_BEFORE_CURRENT(tmp, list);
            break;
        }
    }
    AST_RWLIST_TRAVERSE_SAFE_END;
    if (!cur)
        AST_RWLIST_INSERT_TAIL(&apps, tmp, list);
 
    ast_verb(5, "Registered application '" COLORIZE_FMT "'\n", COLORIZE(COLOR_BRCYAN, 0, tmp->name));
 
    AST_RWLIST_UNLOCK(&apps);
 
    return 0;
}

References app, ast_app::arguments, ast_calloc, ast_free, ast_log, ast_module_name(), AST_RWLIST_INSERT_BEFORE_CURRENT, AST_RWLIST_INSERT_TAIL, AST_RWLIST_TRAVERSE_SAFE_BEGIN, AST_RWLIST_TRAVERSE_SAFE_END, AST_RWLIST_UNLOCK, AST_RWLIST_WRLOCK, AST_STATIC_DOC, ast_string_field_init, ast_string_field_set, ast_strlen_zero(), ast_verb, AST_XML_DOC, ast_xmldoc_build_arguments(), ast_xmldoc_build_description(), ast_xmldoc_build_seealso(), ast_xmldoc_build_since(), ast_xmldoc_build_synopsis(), ast_xmldoc_build_syntax(), COLOR_BRCYAN, COLORIZE, COLORIZE_FMT, ast_app::description, ast_app::docsrc, execute(), ast_app::execute, LOG_WARNING, pbx_findapp_nolock(), ast_app::seealso, ast_app::since, synopsis, and ast_app::syntax.

Referenced by ast_msg_init(), load_module(), load_pbx_builtins(), and load_pbx_variables().

ast_unload_resource()

int ast_unload_resource	(	const char *	resource_name,
		enum	ast_module_unload_mode
	)

Unload a module.

Parameters

resource_name	The name of the module to unload.
ast_module_unload_mode	The force flag. This should be set using one of the AST_FORCE flags.

This function unloads a module. It will only unload modules that are not in use (usecount not zero), unless AST_FORCE_FIRM or AST_FORCE_HARD is specified. Setting AST_FORCE_FIRM or AST_FORCE_HARD will unload the module regardless of consequences (NOT RECOMMENDED).

Return values

0	on success.
-1	on error.

Definition at line 1457 of file loader.c.

{
    return auto_unload_resource(resource_name, force, 0, NULL);
}

References auto_unload_resource(), and NULL.

Referenced by ast_ari_asterisk_unload_module(), ast_load_resource(), ast_refresh_resource(), auto_unload_resource(), handle_unload(), manager_moduleload(), and unload_module().

ast_unregister_application()

int ast_unregister_application

(

const char *

app

)

Unregister an application.

Parameters

app	name of the application (does not have to be the same string as the one that was registered)

This unregisters an application from Asterisk's internal application list.

Return values

0	success
-1	failure

Examples

app_skel.c.

Definition at line 392 of file pbx_app.c.

{
    struct ast_app *cur;
    int cmp;
 
    /* Anticipate need for conlock in unreference_cached_app(), in order to avoid
     * possible deadlock with pbx_extension_helper()/pbx_findapp()
     */
    ast_rdlock_contexts();
 
    AST_RWLIST_WRLOCK(&apps);
    AST_RWLIST_TRAVERSE_SAFE_BEGIN(&apps, cur, list) {
        cmp = strcasecmp(app, cur->name);
        if (cmp > 0) {
            continue;
        }
        if (!cmp) {
            /* Found it. */
            unreference_cached_app(cur);
            AST_RWLIST_REMOVE_CURRENT(list);
            ast_verb(5, "Unregistered application '%s'\n", cur->name);
            ast_string_field_free_memory(cur);
            ast_free(cur);
            break;
        }
        /* Not in container. */
        cur = NULL;
        break;
    }
    AST_RWLIST_TRAVERSE_SAFE_END;
    AST_RWLIST_UNLOCK(&apps);
 
    ast_unlock_contexts();
 
    return cur ? 0 : -1;
}

References app, ast_free, ast_rdlock_contexts(), AST_RWLIST_REMOVE_CURRENT, AST_RWLIST_TRAVERSE_SAFE_BEGIN, AST_RWLIST_TRAVERSE_SAFE_END, AST_RWLIST_UNLOCK, AST_RWLIST_WRLOCK, ast_string_field_free_memory, ast_unlock_contexts(), ast_verb, NULL, and unreference_cached_app().

Referenced by __unload_module(), load_module(), message_shutdown(), unload_module(), unload_parking_applications(), unload_pbx_builtins(), and unload_pbx_variables().

ast_update_module_list()

int ast_update_module_list	(	int(*)(const char *module, const char *description, int usecnt, const char *status, const char *like, enum ast_module_support_level support_level)	modentry,
		const char *	like
	)

Ask for a list of modules, descriptions, use counts and status.

Parameters

modentry	A callback to an updater function.
like

For each of the modules loaded, modentry will be executed with the resource, description, and usecount values of each particular module.

Returns

the number of modules loaded

Definition at line 2746 of file loader.c.

{
    int total_mod_loaded = 0;
    struct module_vector alpha_module_list;
 
    AST_DLLIST_LOCK(&module_list);
 
    if (!alpha_module_list_create(&alpha_module_list)) {
        int idx;
 
        for (idx = 0; idx < AST_VECTOR_SIZE(&alpha_module_list); idx++) {
            struct ast_module *cur = AST_VECTOR_GET(&alpha_module_list, idx);
 
            total_mod_loaded += modentry(cur->resource, cur->info->description, cur->usecount,
                cur->flags.running ? "Running" : "Not Running", like, cur->info->support_level);
        }
    }
 
    AST_DLLIST_UNLOCK(&module_list);
    AST_VECTOR_FREE(&alpha_module_list);
 
    return total_mod_loaded;
}

References alpha_module_list_create(), AST_DLLIST_LOCK, AST_DLLIST_UNLOCK, AST_VECTOR_FREE, AST_VECTOR_GET, AST_VECTOR_SIZE, ast_module_info::description, ast_module::flags, ast_module::info, ast_module::resource, ast_module::running, ast_module_info::support_level, and ast_module::usecount.

Referenced by ast_var_Modules(), and handle_modlist().

ast_update_module_list_condition()

int ast_update_module_list_condition	(	int(*)(const char *module, const char *description, int usecnt, const char *status, const char *like, enum ast_module_support_level support_level, void *data, const char *condition)	modentry,
		const char *	like,
		void *	data,
		const char *	condition
	)

Ask for a list of modules, descriptions, use counts and status.

Parameters

modentry	A callback to an updater function
like
data	Data passed into the callback for manipulation
condition	The condition to meet

For each of the modules loaded, modentry will be executed with the resource, description, and usecount values of each particular module.

Returns

the number of conditions met

Since

13.5.0

Definition at line 2801 of file loader.c.

{
    int conditions_met = 0;
    struct module_vector alpha_module_list;
 
    AST_DLLIST_LOCK(&module_list);
 
    if (!alpha_module_list_create(&alpha_module_list)) {
        int idx;
 
        for (idx = 0; idx < AST_VECTOR_SIZE(&alpha_module_list); idx++) {
            struct ast_module *cur = AST_VECTOR_GET(&alpha_module_list, idx);
 
            conditions_met += modentry(cur->resource, cur->info->description, cur->usecount,
                cur->flags.running? "Running" : "Not Running", like, cur->info->support_level, data,
                condition);
        }
    }
 
    AST_DLLIST_UNLOCK(&module_list);
    AST_VECTOR_FREE(&alpha_module_list);
 
    return conditions_met;
}

References alpha_module_list_create(), AST_DLLIST_LOCK, AST_DLLIST_UNLOCK, AST_VECTOR_FREE, AST_VECTOR_GET, AST_VECTOR_SIZE, ast_module_info::description, ast_module::flags, ast_module::info, ast_module::resource, ast_module::running, ast_module_info::support_level, and ast_module::usecount.

Referenced by ast_ari_asterisk_get_module().

ast_update_module_list_data()

int ast_update_module_list_data	(	int(*)(const char *module, const char *description, int usecnt, const char *status, const char *like, enum ast_module_support_level support_level, void *data)	modentry,
		const char *	like,
		void *	data
	)

Ask for a list of modules, descriptions, use counts and status.

Parameters

modentry	A callback to an updater function
like
data	Data passed into the callback for manipulation

For each of the modules loaded, modentry will be executed with the resource, description, and usecount values of each particular module.

Returns

the number of modules loaded

Since

13.5.0

Definition at line 2773 of file loader.c.

{
    int total_mod_loaded = 0;
    struct module_vector alpha_module_list;
 
    AST_DLLIST_LOCK(&module_list);
 
    if (!alpha_module_list_create(&alpha_module_list)) {
        int idx;
 
        for (idx = 0; idx < AST_VECTOR_SIZE(&alpha_module_list); idx++) {
            struct ast_module *cur = AST_VECTOR_GET(&alpha_module_list, idx);
 
            total_mod_loaded += modentry(cur->resource, cur->info->description, cur->usecount,
                cur->flags.running? "Running" : "Not Running", like, cur->info->support_level, data);
        }
    }
 
    AST_DLLIST_UNLOCK(&module_list);
    AST_VECTOR_FREE(&alpha_module_list);
 
    return total_mod_loaded;
}

References alpha_module_list_create(), AST_DLLIST_LOCK, AST_DLLIST_UNLOCK, AST_VECTOR_FREE, AST_VECTOR_GET, AST_VECTOR_SIZE, ast_module_info::description, ast_module::flags, ast_module::info, ast_module::resource, ast_module::running, ast_module_info::support_level, and ast_module::usecount.

Referenced by ast_ari_asterisk_list_modules().

ast_update_use_count()

void ast_update_use_count

(

void

)

Notify when usecount has been changed.

This function calculates use counts and notifies anyone trying to keep track of them. It should be called whenever your module's usecount changes.

Note

The ast_module_user_* functions take care of calling this function for you.

Definition at line 2707 of file loader.c.

{
    /* Notify any module monitors that the use count for a
       resource has changed */
    struct loadupdate *m;
 
    AST_LIST_LOCK(&updaters);
    AST_LIST_TRAVERSE(&updaters, m, entry)
        m->updater();
    AST_LIST_UNLOCK(&updaters);
}

References AST_LIST_LOCK, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, loadupdate::entry, and loadupdate::updater.

Referenced by __ast_module_ref(), __ast_module_unref(), __ast_module_user_add(), __ast_module_user_hangup_all(), __ast_module_user_remove(), auto_unload_resource(), ooh323_hangup(), ooh323_new(), ooh323c_call_thread(), start_resource(), and unistim_new().

Variable Documentation

ast_module_info

const struct ast_module_info* ast_module_info

static

Definition at line 554 of file module.h.