kfstypes.h

nandflash文件系统源代码

/*!
 * $Id: kfstypes.h 71 2008-07-07 15:49:14Z sriramsrao $ 
 *
 * \file kfstypes.h
 * \brief simple typedefs and enums for the KFS metadata server
 * \author Blake Lewis (Kosmix Corp.)
 *
 * Copyright 2008 Quantcast Corp.
 * Copyright 2006-2008 Kosmix Corp.
 *
 * This file is part of Kosmos File System (KFS).
 *
 * Licensed under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * permissions and limitations under the License.
 *
 */
#if !defined(KFS_TYPES_H)
#define KFS_TYPES_H

#include <cerrno>
#include <cassert>
#include "common/kfstypes.h"

namespace KFS {

/*!
 * \brief KFS metadata types.
 */
enum MetaType {
	KFS_UNINIT,		//!< uninitialized
	KFS_INTERNAL,		//!< internal node
	KFS_FATTR,		//!< file attributes
	KFS_DENTRY,		//!< directory entry
	KFS_CHUNKINFO,		//!< chunk information
	KFS_SENTINEL = 99999	//!< internal use, must be largest
};

/*!
 * \brief KFS file types
 */
enum FileType {
	KFS_NONE,		//!< uninitialized
	KFS_FILE,		//!< plain file
	KFS_DIR			//!< directory
};

/*!
 * \brief KFS lease types
 */
enum LeaseType {
	READ_LEASE,
	WRITE_LEASE
};

}
#endif // !defined(KFS_TYPES_H)