mirror of
https://github.com/NLnetLabs/unbound.git
synced 2025-12-24 00:29:58 -05:00
ff653a7ef8
NULL can be used if the function is not used. Open shared ports during reload. Deinit is called during reload.
128 lines
4.4 KiB
C
128 lines
4.4 KiB
C
/*
|
|
* services/modstack.h - stack of modules
|
|
*
|
|
* Copyright (c) 2007, NLnet Labs. All rights reserved.
|
|
*
|
|
* This software is open source.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* Redistributions of source code must retain the above copyright notice,
|
|
* this list of conditions and the following disclaimer.
|
|
*
|
|
* Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
*
|
|
* Neither the name of the NLNET LABS nor the names of its contributors may
|
|
* be used to endorse or promote products derived from this software without
|
|
* specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
|
|
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
|
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
|
|
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
|
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
|
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
/**
|
|
* \file
|
|
*
|
|
* This file contains functions to help maintain a stack of modules.
|
|
*/
|
|
|
|
#ifndef SERVICES_MODSTACK_H
|
|
#define SERVICES_MODSTACK_H
|
|
struct module_func_block;
|
|
struct module_env;
|
|
|
|
/**
|
|
* Stack of modules.
|
|
*/
|
|
struct module_stack {
|
|
/** the number of modules */
|
|
int num;
|
|
/** the module callbacks, array of num_modules length (ref only) */
|
|
struct module_func_block** mod;
|
|
};
|
|
|
|
/**
|
|
* Initialises modules and assignes ids.
|
|
* @param stack: Expected empty, filled according to module_conf
|
|
* @param module_conf: string what modules to initialize
|
|
* @param env: module environment which is inited by the modules.
|
|
* environment should have a superalloc, cfg,
|
|
* @return on false a module init failed.
|
|
*/
|
|
int modstack_startup(struct module_stack* stack, const char* module_conf,
|
|
struct module_env* env);
|
|
|
|
/**
|
|
* Read config file module settings and set up the modfunc block
|
|
* @param stack: the stack of modules (empty before call).
|
|
* @param module_conf: string what modules to insert.
|
|
* @return false on error
|
|
*/
|
|
int modstack_config(struct module_stack* stack, const char* module_conf);
|
|
|
|
/**
|
|
* Get funcblock for module name
|
|
* @param str: string with module name. Advanced to next value on success.
|
|
* The string is assumed whitespace separated list of module names.
|
|
* @return funcblock or NULL on error.
|
|
*/
|
|
struct module_func_block* module_factory(const char** str);
|
|
|
|
/**
|
|
* Get list of modules available.
|
|
* @return list of modules available. Static strings, ends with NULL.
|
|
*/
|
|
const char** module_list_avail(void);
|
|
|
|
/**
|
|
* Init modules. Calls module_init().
|
|
* @param stack: It is modstack_setupped().
|
|
* @param module_conf: module ordering to check against the ordering in stack.
|
|
* fails on changed ordering.
|
|
* @param env: module environment which is inited by the modules.
|
|
* environment should have a superalloc, cfg,
|
|
* env.need_to_validate is set by the modules.
|
|
* @return on false a module init failed.
|
|
*/
|
|
int modstack_call_init(struct module_stack* stack, const char* module_conf,
|
|
struct module_env* env);
|
|
|
|
/**
|
|
* Deinint the modules
|
|
* @param stack: made empty.
|
|
* @param env: module env for module deinit() calls.
|
|
*/
|
|
void modstack_deinit(struct module_stack* stack, struct module_env* env);
|
|
|
|
/**
|
|
* Destartup the modules, close, delete.
|
|
* @param stack: made empty.
|
|
* @param env: module env for module destartup() calls.
|
|
*/
|
|
void modstack_destartup(struct module_stack* stack, struct module_env* env);
|
|
|
|
/**
|
|
* Find index of module by name.
|
|
* @param stack: to look in
|
|
* @param name: the name to look for
|
|
* @return -1 on failure, otherwise index number.
|
|
*/
|
|
int modstack_find(struct module_stack* stack, const char* name);
|
|
|
|
/** fetch memory for a module by name, returns 0 if module not there */
|
|
size_t mod_get_mem(struct module_env* env, const char* name);
|
|
|
|
#endif /* SERVICES_MODSTACK_H */
|