#ifndef FS_H
#define FS_H

#define FS_FILE        0x01
#define FS_DIRECTORY   0x02
#define FS_CHARDEVICE  0x03
#define FS_BLOCKDEVICE 0x04
#define FS_PIPE        0x05
#define FS_SYMLINK     0x06
#define FS_MOUNTPOINT  0x08

struct fs_node;

typedef uint32_t (*read_type_t)(struct fs_node*, uint32_t, uint32_t, uint8_t *);
typedef uint32_t (*write_type_t)(struct fs_node*, uint32_t, uint32_t, uint8_t *);
typedef void (*open_type_t)(struct fs_node*, uint8_t read, uint8_t write);
typedef void (*close_type_t)(struct fs_node*);
typedef struct dirent * (*readdir_type_t)(struct fs_node*, uint32_t);
typedef struct fs_node * (*finddir_type_t)(struct fs_node*, char *name);

typedef struct fs_node {
	char		name[256];
	uint32_t	mask;
	uint32_t	uid;
	uint32_t	gid;
	uint32_t	flags;
	uint32_t	inode;
	uint32_t	length;
	uint32_t	impl;
	read_type_t		read;
	write_type_t	write;
	open_type_t		open;
	close_type_t	close;
	readdir_type_t	readdir;
	finddir_type_t	finddir;
	struct fs_node	*ptr;
} fs_node_t;

struct dirent {
	char name[256];
	uint32_t ino;
};


extern fs_node_t *fs_root;

uint32_t read_fs(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer);
uint32_t write_fs(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer);
void open_fs(fs_node_t *node, uint8_t read, uint8_t write);
void close_fs(fs_node_t *node);
struct dirent *readdir_fs(fs_node_t *node, uint32_t index);
fs_node_t *finddir_fs(fs_node_t *node, char *name);
fs_node_t *kopen(const char *filename, uint32_t flags);

#endif