#ifndef FILESYSTEM_H

#define FILESYSTEM_H

#define BASE_BLOCK_ADDRESS 100 // address of base block in disk

#define FILENAME_LENGTH 256 // max length allowed for a filename

#define ERROR_CODE_NO_FILES_EXIST -1

#define EXIT_CODE_FILE_NOT_EXIST 0

typedef struct {

int head, tail;

} base_block_t;

typedef struct {

char filename[FILENAME_LENGTH];

int next_file_address; // address of the next file

} metadata_t;

base_block_t* base_block; // contains the memory address of the base

// block after loading it from the disk

void filesystem_init(); // will be called by the main kernel on startup

void create_file(char*, char*);

char** list_files();

char* read_file(char*);

metadata_t* load_metadata(int); // used to load the metadata for a file

// by passing its disk address (aka. base_block->tail)

int get_address_by_filename(char*);

int get_prev_file_address(int);

int get_files_number();