* Copyright 2001-2011, Haiku Inc. All rights reserved.
* This file may be used under the terms of the MIT License.
*
* Authors:
* Jérôme Duval
*/
#ifndef EXTENTSTREAM_H
#define EXTENTSTREAM_H
#include "ext2.h"
#include "Transaction.h"
class Inode;
class Volume;
class ExtentStream
{
public:
ExtentStream(Volume* volume, Inode* inode,
ext2_extent_stream* stream, off_t size);
~ExtentStream();
status_t FindBlock(off_t offset, fsblock_t& block,
uint32 *_count = NULL);
status_t Enlarge(Transaction& transaction, off_t& numBlocks);
status_t Shrink(Transaction& transaction, off_t& numBlocks);
void Init();
bool Check();
private:
status_t _Check(ext2_extent_stream *stream, fileblock_t &block);
status_t _CheckBlock(ext2_extent_stream *stream, fsblock_t block);
Volume* fVolume;
Inode* fInode;
ext2_extent_stream* fStream;
fsblock_t fFirstBlock;
fsblock_t fAllocatedPos;
off_t fNumBlocks;
off_t fSize;
};
#endif
