/*

 * Intel(R) Enclosure LED Utilities

 * Copyright (C) 2017-2019 Intel Corporation.

 *

 * This program is free software; you can redistribute it and/or modify it

 * under the terms and conditions of the GNU General Public License,

 * version 2, as published by the Free Software Foundation.

 *

 * This program is distributed in the hope it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for

 * more details.

 *

 * You should have received a copy of the GNU General Public License along with

 * this program; if not, write to the Free Software Foundation, Inc.,

 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.

 *

 */

#ifndef _UDEV_H_INCLUDED_

#define _UDEV_H_INCLUDED_

#include "list.h"

/**

 */

enum udev_action {

	UDEV_ACTION_UNKNOWN = 0,

	UDEV_ACTION_ADD,

	UDEV_ACTION_REMOVE

};

/**

 * @brief Deletes udev context and udev monitor.

 *

 * @return The function does not return a value..

 */

void stop_udev_monitor(void);

/**

 * @brief Returns udev monitor file descriptor or creates udev context and

 *        udev monitor if monitor does not exist.

 *

 * @return Udev monitor file descriptor if successful, otherwise the

 *         function returns -1 on libudev error and libudev sets errno.

 */

int get_udev_monitor(void);

/**

 * @brief Handles udev event.

 *

 *        This function checks event type and if it is 'add' or remove

 *        function sets custom IBPI pattern to block device which is affected

 *        by this event.

 *

 * @param[in]    ledmon_block_list    list containing block devices, it is

 *                                    used to match device from udev event.

 *

 * @return 0 if 'add' or 'remove' event handled successfully;

 *         1 if registered event is not 'add' or 'remove';

 *         -1 on libudev error.

 */

int handle_udev_event(struct list *ledmon_block_list);

#endif                         /* _UDEV_H_INCLUDED_ */