// Ext2BlockCache.h
// Author: Josh Holtrop
// Date: 12/29/05
// Modified: 12/29/05

#ifndef __HOS_EXT2BLOCKCACHE_H__
#define __HOS_EXT2BLOCKCACHE_H__ __HOS_EXT2BLOCKCACHE_H__

#include "fs/vfs.h"
#include "ext2.h"

class Ext2BlockCache
{
protected:
	Ext2fs *myFS;
	u32_t	myInum;
	ext2_inode_t *myInode;
	u32_t	myBlockSize;
	u8_t *myCache[3];
	u8_t myCacheAddress[3];
	u8_t myCacheDirty[3];
	u32_t	myInodeDirty;

	void	setCache(u32_t level, u32_t fsblock);
	u32_t	getFSBlock(u32_t block, int create);

public:
	Ext2BlockCache(Ext2fs *fs, u32_t inum, ext2_inode_t *inode);
	~Ext2BlockCache();
	int readBlock(u32_t blockNum, void *buf);
	int writeBlock(u32_t blockNum, void *buf);
};

#endif