1. 根目录:
2. fs
3. xfs
4. xfs_dir2.h

/*
 * Copyright (c) 2000-2001,2005 Silicon Graphics, Inc.
 * All Rights Reserved.
 *
 * This program 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.
 *
 * This program is distributed in the hope that it would 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; if not, write the Free Software Foundation,
 * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
#ifndef __XFS_DIR2_H__
#define __XFS_DIR2_H__

struct xfs_bmap_free;
struct xfs_da_args;
struct xfs_inode;
struct xfs_mount;
struct xfs_trans;

extern struct xfs_name	xfs_name_dotdot;

/*
 * Generic directory interface routines
 */
extern void xfs_dir_startup(void);
extern void xfs_dir_mount(struct xfs_mount *mp);
extern int xfs_dir_isempty(struct xfs_inode *dp);
extern int xfs_dir_init(struct xfs_trans *tp, struct xfs_inode *dp,
				struct xfs_inode *pdp);
extern int xfs_dir_createname(struct xfs_trans *tp, struct xfs_inode *dp,
				struct xfs_name *name, xfs_ino_t inum,
				xfs_fsblock_t *first,
				struct xfs_bmap_free *flist, xfs_extlen_t tot);
extern int xfs_dir_lookup(struct xfs_trans *tp, struct xfs_inode *dp,
				struct xfs_name *name, xfs_ino_t *inum,
				struct xfs_name *ci_name);
extern int xfs_dir_removename(struct xfs_trans *tp, struct xfs_inode *dp,
				struct xfs_name *name, xfs_ino_t ino,
				xfs_fsblock_t *first,
				struct xfs_bmap_free *flist, xfs_extlen_t tot);
extern int xfs_dir_replace(struct xfs_trans *tp, struct xfs_inode *dp,
				struct xfs_name *name, xfs_ino_t inum,
				xfs_fsblock_t *first,
				struct xfs_bmap_free *flist, xfs_extlen_t tot);
extern int xfs_dir_canenter(struct xfs_trans *tp, struct xfs_inode *dp,
				struct xfs_name *name, uint resblks);

/*
 * Direct call from the bmap code, bypassing the generic directory layer.
 */
extern int xfs_dir2_sf_to_block(struct xfs_da_args *args);

#endif	/* __XFS_DIR2_H__ */