/*
 * storage.h
 *
 *  Created on: Aug 23, 2011
 *      Author: Tiberiu
 */

#ifndef STORAGE_H_
#define STORAGE_H_

#include <types.h>

// Storage device
typedef struct {

	char MountPointName[32];// E.g. "fd0"; you should avoid spaces, or special chars, or otherwise get weird paths like "Mom's floppy\virus.exe"
	uint32 DeviceID;		// Autocompleted by VFS

	uint32 BlockSize;		// E.g. sector size
	uint32 BlockCount;		// How many blocks are loaded in memory per read

	/********************************************************
	 * READ DATA											*
	 * Params:												*
	 * 		> offset: read starting from block ~			*
	 * Returns: address to data, NULL for error				*
	 ********************************************************/
	uint32 (*ReadData) (uint32 offset);

	/********************************************************
	 * WRITE DATA											*
	 * Params:												*
	 * 		> offset: write starting from block ~			*
	 * 		> address: where to write from					*
	 * Returns: NULL for error  							*
	 ********************************************************/
	uint32 (*WriteData) (uint32 offset, uint32 address);

	uint32 FileSystemID;	// Autocompleted by 'mount'... at least should be

} StorageDevice;


typedef struct {
	uint32 FileSystemID;	// Autocompleted by VFS

	/********************************************************
	 * DETECT IF THIS IS THE FS ON STORAGE DEVICE			*
	 * Params:												*
	 * 		> *s: Pointer to device info & routines			*
	 * Returns: positive if match, NULL otherwise			*
	 ********************************************************/
	uint32 (*Detect) (StorageDevice *s);

	uint32 (*Open) (StorageDevice *s, string path);
	uint32 (*CreateNode) (StorageDevice *s, string path);
	uint32 (*DeleteNode) (StorageDevice *s, string path);

} FileSystem;



extern void ConvertLbaToChs(uint32 SectorsPerTrack, uint32 lba, uint32 *cyl, uint32 *head, uint32 *sector);

#endif /* STORAGE_H_ */