// vfs.h
// Virtual file system subsystem for HOS
// Author: Josh Holtrop
// Date: 05/10/05
// Modified: 05/10/05

#ifndef __HOS_VFS_H__
#define __HOS_VFS_H__ __HOS_VFS_H__

#define VFS_FT_UNKNOWN		0
#define VFS_FT_FILE		1
#define VFS_FT_DIR		2
#define VFS_FT_CHAR		3
#define VFS_FT_BLOCK		4
#define VFS_FT_FIFO		5
#define VFS_FT_SOCK		6
#define VFS_FT_SYMLINK		7

#define VFS_PERMS_OX		0x0001
#define VFS_PERMS_OW		0x0002
#define VFS_PERMS_OR		0x0004
#define VFS_PERMS_GX		0x0008
#define VFS_PERMS_GW		0x0010
#define VFS_PERMS_GR		0x0020
#define VFS_PERMS_UX		0x0040
#define VFS_PERMS_UW		0x0080
#define VFS_PERMS_UR		0x0100
#define VFS_PERMS_STICKY	0x0200
#define VFS_PERMS_SGID		0x0400
#define VFS_PERMS_SUID		0x0800

#define EOF			1000000

#include "hos_defines.h"
#include "devices.h"


typedef struct
{
	u16_t	type;			// file type, of VFS_FILE_TYPE_*
	u32_t	size;
	u32_t	inode;
	u16_t	permissions;
	u16_t	uid;
	u16_t	gid;
	u32_t	atime;
	u32_t	mtime;
	u32_t	ctime;
	u16_t	links;
	u32_t	dev;
} vfs_stat_t;


typedef	u64_t inode_num_t;

#ifdef _HOS_CPP_
extern "C" {
#endif

int	vfs_init();
int	vfs_mount(device_t device, char *fsType, char *mountPoint);
int	vfs_stat(char *name, vfs_stat_t *buff);

#ifdef _HOS_CPP_
}

#include "lang/string.h"
#include "fs/FileSystem.h"
#include "fs/VFSMount.h"

typedef struct
{
	string name;
	FileSystem *(*mount_func)(device_t);
} FSHandle;

typedef FileSystem *(*mount_func_t)(device_t);

FileSystem *vfs_attempt_mount(device_t device, char *fsType);
int	vfs_register(char *fs, mount_func_t mount_func);
mount_func_t vfs_get_mount_func(const string & fsName);
inode_num_t vfs_get_inode(const string & path);

#endif

#endif