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/* Copyright (C) CZ.NIC, z.s.p.o. <knot-resolver@labs.nic.cz>
* SPDX-License-Identifier: GPL-3.0-or-later
*/
#pragma once
#include "lib/defines.h"
#include "lib/layer.h"
#include <lua.h>
struct engine;
struct kr_module;
/**
* Register Lua module as a FFI module.
* This fabricates a standard module interface,
* that trampolines to the Lua module methods.
*
* @note Lua module is loaded in it's own coroutine,
* so it's possible to yield and resume at arbitrary
* places except deinit()
*
* @param engine daemon engine
* @param module prepared module
* @param name module name
* @return 0 or an error
*/
int ffimodule_register_lua(struct engine *engine, struct kr_module *module, const char *name);
int ffimodule_init(lua_State *L);
void ffimodule_deinit(lua_State *L);
/** Static storage for faster passing of layer function parameters to lua callbacks.
*
* We don't need to declare it in a header, but let's give it visibility. */
KR_EXPORT extern kr_layer_t kr_layer_t_static;
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