/*
 * dir.h - Exports for directory handling. Originated from the Linux-NTFS project.
 *
 * Copyright (c) 2002      Anton Altaparmakov
 * Copyright (c) 2005-2006 Yura Pakhuchiy
 * Copyright (c) 2004-2005 Richard Russon
 * Copyright (c) 2005-2008 Szabolcs Szakacsits
 *
 * This program/include file is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as published
 * by the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program/include file is distributed in the hope that it will be
 * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program (in the main directory of the NTFS-3G
 * distribution in the file COPYING); if not, write to the Free Software
 * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#ifndef _NTFS_DIR_H
#define _NTFS_DIR_H

#include "types.h"

#define PATH_SEP '/'

/*
 * We do not have these under DJGPP, so define our version that do not conflict
 * with other S_IFs defined under DJGPP.
 */
#ifdef DJGPP
#ifndef S_IFLNK
#define S_IFLNK  0120000
#endif
#ifndef S_ISLNK
#define S_ISLNK(m)  (((m) & S_IFMT) == S_IFLNK)
#endif
#ifndef S_IFSOCK
#define S_IFSOCK 0140000
#endif
#ifndef S_ISSOCK
#define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK)
#endif
#endif

/*
 * The little endian Unicode strings $I30, $SII, $SDH, $O, $Q, $R
 * as a global constant.
 */
extern ntfschar NTFS_INDEX_I30[5];
extern ntfschar NTFS_INDEX_SII[5];
extern ntfschar NTFS_INDEX_SDH[5];
extern ntfschar NTFS_INDEX_O[3];
extern ntfschar NTFS_INDEX_Q[3];
extern ntfschar NTFS_INDEX_R[3];

extern u64 ntfs_inode_lookup_by_name(ntfs_inode *dir_ni,
		const ntfschar *uname, const int uname_len);
extern u64 ntfs_inode_lookup_by_mbsname(ntfs_inode *dir_ni, const char *name);
extern void ntfs_inode_update_mbsname(ntfs_inode *dir_ni, const char *name,
				u64 inum);

extern ntfs_inode *ntfs_pathname_to_inode(ntfs_volume *vol, ntfs_inode *parent,
		const char *pathname);
extern ntfs_inode *ntfs_create(ntfs_inode *dir_ni, le32 securid,
		const ntfschar *name, u8 name_len, mode_t type);
extern ntfs_inode *ntfs_create_device(ntfs_inode *dir_ni, le32 securid,
		const ntfschar *name, u8 name_len, mode_t type, dev_t dev);
extern ntfs_inode *ntfs_create_symlink(ntfs_inode *dir_ni, le32 securid,
		const ntfschar *name, u8 name_len, const ntfschar *target,
		int target_len);
extern int ntfs_check_empty_dir(ntfs_inode *ni);
extern int ntfs_delete(ntfs_volume *vol, const char *path,
		ntfs_inode *ni, ntfs_inode *dir_ni, const ntfschar *name,
		u8 name_len);

extern int ntfs_link(ntfs_inode *ni, ntfs_inode *dir_ni, const ntfschar *name,
		u8 name_len);

/*
 * File types (adapted from include <linux/fs.h>)
 */
#define NTFS_DT_UNKNOWN		0
#define NTFS_DT_FIFO		1
#define NTFS_DT_CHR		2
#define NTFS_DT_DIR		4
#define NTFS_DT_BLK		6
#define NTFS_DT_REG		8
#define NTFS_DT_LNK		10
#define NTFS_DT_SOCK		12
#define NTFS_DT_WHT		14
#define NTFS_DT_REPARSE		32

/*
 * This is the "ntfs_filldir" function type, used by ntfs_readdir() to let
 * the caller specify what kind of dirent layout it wants to have.
 * This allows the caller to read directories into their application or
 * to have different dirent layouts depending on the binary type.
 */
typedef int (*ntfs_filldir_t)(void *dirent, const ntfschar *name,
		const int name_len, const int name_type, const s64 pos,
		const MFT_REF mref, const unsigned dt_type);

extern int ntfs_readdir(ntfs_inode *dir_ni, s64 *pos,
		void *dirent, ntfs_filldir_t filldir);

ntfs_inode *ntfs_dir_parent_inode(ntfs_inode *ni);
MFT_REF ntfs_mft_get_parent_ref(ntfs_inode *ni);
u32 ntfs_interix_types(ntfs_inode *ni);

int ntfs_get_ntfs_dos_name(ntfs_inode *ni, ntfs_inode *dir_ni,
			char *value, size_t size);
int ntfs_set_ntfs_dos_name(ntfs_inode *ni, ntfs_inode *dir_ni,
			const char *value, size_t size,	int flags);
int ntfs_remove_ntfs_dos_name(ntfs_inode *ni, ntfs_inode *dir_ni);
int ntfs_dir_link_cnt(ntfs_inode *ni);

#if CACHE_INODE_SIZE

struct CACHED_GENERIC;

extern int ntfs_dir_inode_hash(const struct CACHED_GENERIC *cached);
extern int ntfs_dir_lookup_hash(const struct CACHED_GENERIC *cached);

#endif

#endif /* defined _NTFS_DIR_H */