iwd/src/module.h

/*
 *
 *  Wireless daemon for Linux
 *
 *  Copyright (C) 2019  Intel Corporation. All rights reserved.
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 of the License, or (at your option) any later version.
 *
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 */

struct iwd_module_desc {
	const char *name;
	int (*init)(void);
	void (*exit)(void);
	bool active;
} __attribute__((aligned(8)));

struct iwd_module_depends {
	const char *self;
	const char *target;
};

#define IWD_MODULE(name, init, exit)					\
	_Pragma("GCC diagnostic push")					\
	_Pragma("GCC diagnostic ignored \"-Wattributes\"")		\
	static struct iwd_module_desc __iwd_module_ ## name		\
		__attribute__((used, retain, section("__iwd_module"),   \
			       aligned(8))) = {				\
			#name, init, exit				\
		};							\
	_Pragma("GCC diagnostic pop")

#define IWD_MODULE_DEPENDS(name, dep)					\
	_Pragma("GCC diagnostic push")                                  \
	_Pragma("GCC diagnostic ignored \"-Wattributes\"")              \
	static struct iwd_module_depends __iwd_module__##name##_##dep	\
		__attribute__((used, retain,				\
			section("__iwd_module_dep"), aligned(8))) = {	\
				.self = #name,				\
				.target = #dep,				\
		};							\
	_Pragma("GCC diagnostic pop")

int iwd_modules_init(void);
void iwd_modules_exit(void);