110 строки
3.4 KiB
C
110 строки
3.4 KiB
C
|
/*
|
||
|
|
* Copyright (c) 2000-2001 Silicon Graphics, Inc. All Rights Reserved.
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or modify it
|
||
|
|
* under the terms of version 2 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.
|
||
|
|
*
|
||
|
|
* Further, this software is distributed without any warranty that it is
|
||
|
|
* free of the rightful claim of any third person regarding infringement
|
||
|
|
* or the like. Any license provided herein, whether implied or
|
||
|
|
* otherwise, applies only to this software file. Patent licenses, if
|
||
|
|
* any, provided herein do not apply to combinations of this program with
|
||
|
|
* other software, or any other product whatsoever.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU General Public License along
|
||
|
|
* with this program; if not, write the Free Software Foundation, Inc., 59
|
||
|
|
* Temple Place - Suite 330, Boston MA 02111-1307, USA.
|
||
|
|
*
|
||
|
|
* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
|
||
|
|
* Mountain View, CA 94043, or:
|
||
|
|
*
|
||
|
|
* http://www.sgi.com
|
||
|
|
*
|
||
|
|
* For further information regarding this notice, see:
|
||
|
|
*
|
||
|
|
* http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
|
||
|
|
*/
|
||
|
|
#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__ */
|