#include "fs.h"
#include "disk.h"

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include <unistd.h>

#define FS_MAGIC           0xf0f03410
#define INODES_PER_BLOCK   128
#define POINTERS_PER_INODE 5
#define POINTERS_PER_BLOCK 1024

struct fs_superblock {
	int magic;
	int nblocks;
	int ninodeblocks;
	int ninodes;
};

struct fs_inode {
	int isvalid;
	int size;
	int direct[POINTERS_PER_INODE];
	int indirect;
};

union fs_block {
	struct fs_superblock super;
	struct fs_inode inode[INODES_PER_BLOCK];
	int pointers[POINTERS_PER_BLOCK];
	char data[DISK_BLOCK_SIZE];
};

int fs_format()
{
	return 0;
}

void fs_debug()
{
	union fs_block block;

	disk_read(0,block.data);

	printf("superblock:\n");
	printf("    %d blocks\n",block.super.nblocks);
	printf("    %d inode blocks\n",block.super.ninodeblocks);
	printf("    %d inodes\n",block.super.ninodes);
}

int fs_mount()
{
	return 0;
}

int fs_create()
{
	return 0;
}

int fs_delete( int inumber )
{
	return 0;
}

int fs_getsize( int inumber )
{
	return -1;
}

int fs_read( int inumber, char *data, int length, int offset )
{
	return 0;
}

int fs_write( int inumber, const char *data, int length, int offset )
{
	return 0;
}