LibFS.h

#ifndef __LibFS_h__
#define __LibFS_h__

/*
* DO NOT MODIFY THIS FILE
*/

#include <stdio.h>
#include <stdlib.h>
//#include <unistd.h>
#include <bitset>
#include "LibDisk.h"

#define MAGIC_NUM 420
#define INODE_NUM 1000
#define DATA_NUM 1000

// used for errors
extern int osErrno;

// error types - don't change anything about these!! (even the order!)
typedef enum {
	E_GENERAL,      // general
	E_CREATE,
	E_NO_SUCH_FILE,
	E_TOO_MANY_OPEN_FILES,
	E_BAD_FD,
	E_NO_SPACE,
	E_FILE_TOO_BIG,
	E_SEEK_OUT_OF_BOUNDS,
	E_FILE_IN_USE,
	E_BUFFER_TOO_SMALL,
	E_DIR_NOT_EMPTY,
	E_ROOT_DIR,
} FS_Error_t;

class superBlock {
public:
	int magic_num;
};

class dataNode {
public:
	char data[SECTOR_SIZE];
};

class inode {
public:
	int size;
	int type;
	dataNode * dataPtr[30];
};

class FS {
public:
	// File system generic call
	int FS_Boot(char *path);
	int FS_Sync();

	// file ops
	int File_Create(char *file);
	int File_Open(char *file);
	int File_Read(int fd, void *buffer, int size);
	int File_Write(int fd, void *buffer, int size);
	int File_Seek(int fd, int offset);
	int File_Close(int fd);
	int File_Unlink(char *file);

	// directory ops
	int Dir_Create(char *path);
	int Dir_Size(char *path);
	int Dir_Read(char *path, void *buffer, int size);
	int Dir_Unlink(char *path);

	// Constructor
	FS() { inodeBitmap = new std::bitset<INODE_NUM>; dataBitmap = new std::bitset<DATA_NUM>; }

	// Destructor
	~FS() { delete (std::bitset<INODE_NUM>*)inodeBitmap; delete (std::bitset<DATA_NUM>*)dataBitmap; }

private:
	// Used to track free space 0 = free 1 = in use
	void * inodeBitmap;
	void * dataBitmap;
	char * current_path;
};


//#include "LibFS.cpp"

#endif /* __LibFS_h__ */