#ifndef __VFS_H
#define __VFS_H

struct vfs_device_t {
	unsigned int device;
	char name[16];
	unsigned char fs;
	char *cwd;
	void *fs_data;
};

struct vfs_file_handle_info_t {
	unsigned long long position;
	unsigned long long size;
	int ref;
};

struct vfs_file_handle_t {
	char *filepath;
	struct vfs_device_t *device;
	unsigned char free;
	struct vfs_file_handle_info_t *info;
	void *fs_specific;
};

struct quinn_dirent_t {
	unsigned int name_len;
	unsigned int rec_len;
	unsigned int next_offset;
	unsigned char type;
	char name[1];
};

struct quinn_pipe_t {
	int in_fno;
	int out_fno;
	int ref;
	char *buffer;
	unsigned int buffer_size;
};

struct stat {
	unsigned short st_dev;     //ID of device containing file
	unsigned int st_ino;     //file serial number
	unsigned short st_mode;    //mode of file (see below)
	unsigned short st_nlink;   //number of links to the file
	unsigned short st_uid;     //user ID of file
	unsigned short st_gid;     //group ID of file
	unsigned short st_rdev;    //device ID (if file is character or block special)
	unsigned int st_size;    //file size in bytes (if file is a regular file)
	unsigned int st_atime;   //time of last access
	unsigned int st_mtime;   //time of last data modification
	unsigned int st_ctime;   //time of last status change
	unsigned int st_blksize; //a filesystem-specific preferred I/O block size for
	unsigned int st_blocks;  //number of blocks allocated for this object
};

#define	O_RDONLY	0x0000	
#define	O_WRONLY	0x0001	
#define	O_RDWR		0x0002	
#define	O_APPEND	0x0008
#define	O_CREAT		0x0200
#define	O_TRUNC		0x0400
#define	O_EXCL		0x0800
#define O_SYNC		0x2000
#define O_NONBLOCK 	0x4000

#define S_IFSOCK 0140000
#define S_IFLNK	 0120000
#define S_IFREG  0100000
#define S_IFBLK  0060000
#define S_IFDIR  0040000
#define S_IFCHR  0020000
#define S_IFIFO  0010000
#define S_ISUID  0004000
#define S_ISGID  0002000
#define S_ISVTX  0001000

extern void init_vfs(void);
extern struct vfs_device_t *vfs_register_device(unsigned int device, char *name, unsigned char fstype);
extern unsigned char vfs_select_device(char *name);
extern void vfs_close_file(int fno);
extern int vfs_open_file(char *path, int flags, int mode);
extern int vfs_read_file(int fileno, char *buffer, int len);
extern int vfs_write_file(int fileno, char *buffer, int len);
extern void vfs_close_all();
extern int vfs_getdents(int fno, char *buffer, int count);
extern int vfs_mkdir(char *path);
extern char *vfs_read_entire_file(char *path, char **buffer);
extern int vfs_change_directory(char *path);
extern int vfs_fstat(int fileno, struct stat *s);
extern int vfs_stat(char *path, struct stat *s);
extern int vfs_lseek(int fileno, unsigned long long offset, int whence);
extern int vfs_unlink(char *path);
extern int vfs_pipe(int *pipe);
extern int vfs_dup(int fno);
extern void vfs_sync_all();
#endif