#ifndef FS_H
#define FS_H

#define FS_FILE        0x01
#define FS_DIRECTORY   0x02
#define FS_CHARDEVICE  0x04
#define FS_BLOCKDEVICE 0x08
#define FS_PIPE        0x10
#define FS_SYMLINK     0x20
#define FS_MOUNTPOINT  0x40

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