/*
    Copyright (C) 2008 Andreas Baumann <abaumann@yahoo.com>

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program 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 General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef __PIDFILE_H
#define __PIDFILE_H

#include "port/limits.h"		/* for PATH_MAX */
#include "port/stdbool.h"		/* for bool */

#include "errors.h"

#include <sys/types.h>			/* for pid_t */

struct pidfile_t {
	char filename[PATH_MAX];	/**< the filename */
	int fd;				/**< file descriptor */
	bool locked;			/**< is the pidfile locked? */
	bool running;			/**< is another process locking too? */
};

void pidfile_init( struct pidfile_t *pidfile );

void pidfile_set_from_daemon_name( struct pidfile_t *pidfile, const char *name );

void pidfile_set_from_filename( struct pidfile_t *pidfile, const char *filename );

bool is_daemon_running( struct pidfile_t *pidfile, pid_t *pid, wolf_error_t *error );

wolf_error_t pidfile_create( struct pidfile_t *pidfile );

wolf_error_t pidfile_release( struct pidfile_t *pidfile );

wolf_error_t pidfile_remove( struct pidfile_t *pidfile );

#endif /* ifndef __PIDFILE_H */