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/*
* 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 uio;
struct xfs_dabuf;
struct xfs_da_args;
struct xfs_dir2_put_args;
struct xfs_inode;
struct xfs_trans;
/*
* Directory version 2.
* There are 4 possible formats:
* shortform
* single block - data with embedded leaf at the end
* multiple data blocks, single leaf+freeindex block
* data blocks, node&leaf blocks (btree), freeindex blocks
*
* The shortform format is in xfs_dir2_sf.h.
* The single block format is in xfs_dir2_block.h.
* The data block format is in xfs_dir2_data.h.
* The leaf and freeindex block formats are in xfs_dir2_leaf.h.
* Node blocks are the same as the other version, in xfs_da_btree.h.
*/
/*
* Byte offset in data block and shortform entry.
*/
typedef __uint16_t xfs_dir2_data_off_t;
#define NULLDATAOFF 0xffffU
typedef uint xfs_dir2_data_aoff_t; /* argument form */
/*
* Directory block number (logical dirblk in file)
*/
typedef __uint32_t xfs_dir2_db_t;
/*
* Byte offset in a directory.
*/
typedef xfs_off_t xfs_dir2_off_t;
/*
* For getdents, argument struct for put routines.
*/
typedef int (*xfs_dir2_put_t)(struct xfs_dir2_put_args *pa);
typedef struct xfs_dir2_put_args {
xfs_off_t cook; /* cookie of (next) entry */
xfs_intino_t ino; /* inode number */
struct xfs_dirent *dbp; /* buffer pointer */
char *name; /* directory entry name */
int namelen; /* length of name */
int done; /* output: set if value was stored */
xfs_dir2_put_t put; /* put function ptr (i/o) */
struct uio *uio; /* uio control structure */
} xfs_dir2_put_args_t;
#define XFS_DIR_IS_V2(mp) ((mp)->m_dirversion == 2)
extern xfs_dirops_t xfsv2_dirops;
/*
* Other interfaces used by the rest of the dir v2 code.
*/
extern int
xfs_dir2_grow_inode(struct xfs_da_args *args, int space,
xfs_dir2_db_t *dbp);
extern int
xfs_dir2_isblock(struct xfs_trans *tp, struct xfs_inode *dp, int *vp);
extern int
xfs_dir2_isleaf(struct xfs_trans *tp, struct xfs_inode *dp, int *vp);
extern int
xfs_dir2_shrink_inode(struct xfs_da_args *args, xfs_dir2_db_t db,
struct xfs_dabuf *bp);
#endif /* __XFS_DIR2_H__ */
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