/*
 *  Copyright (C) 2000-2008, Parallels, Inc. All rights reserved.
 *
 *  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 2 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, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
#ifndef _LOCK_H_
#define _LOCK_H_

/** Lock CT.
 * Create lock file $dir/$veid.lck.
 * @param veid		VPD id.
 * @param dir		lock directory.
 * @param status	transition status.
 * @return		0 - success
 *			1 - locked
 *			-1- error.
 */
int vps_lock(envid_t veid, char *dir, char *status);

/** Unlock CT.
 *
 * @param veid		CT ID.
 * @param dir		lock directory.
 */
void vps_unlock(envid_t veid, char *dir);
int _lock(char *lockfile, int blk);
void _unlock(int fd, char *lockfile);

#endif