mirror of https://gitee.com/openkylin/linux.git
127 lines
3.8 KiB
C
127 lines
3.8 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_BLOCK_H__
|
|
#define __XFS_DIR2_BLOCK_H__
|
|
|
|
/*
|
|
* xfs_dir2_block.h
|
|
* Directory version 2, single block format structures
|
|
*/
|
|
|
|
struct uio;
|
|
struct xfs_dabuf;
|
|
struct xfs_da_args;
|
|
struct xfs_dir2_data_hdr;
|
|
struct xfs_dir2_leaf_entry;
|
|
struct xfs_inode;
|
|
struct xfs_mount;
|
|
struct xfs_trans;
|
|
|
|
/*
|
|
* The single block format is as follows:
|
|
* xfs_dir2_data_hdr_t structure
|
|
* xfs_dir2_data_entry_t and xfs_dir2_data_unused_t structures
|
|
* xfs_dir2_leaf_entry_t structures
|
|
* xfs_dir2_block_tail_t structure
|
|
*/
|
|
|
|
#define XFS_DIR2_BLOCK_MAGIC 0x58443242 /* XD2B: for one block dirs */
|
|
|
|
typedef struct xfs_dir2_block_tail {
|
|
__uint32_t count; /* count of leaf entries */
|
|
__uint32_t stale; /* count of stale lf entries */
|
|
} xfs_dir2_block_tail_t;
|
|
|
|
/*
|
|
* Generic single-block structure, for xfs_db.
|
|
*/
|
|
typedef struct xfs_dir2_block {
|
|
xfs_dir2_data_hdr_t hdr; /* magic XFS_DIR2_BLOCK_MAGIC */
|
|
xfs_dir2_data_union_t u[1];
|
|
xfs_dir2_leaf_entry_t leaf[1];
|
|
xfs_dir2_block_tail_t tail;
|
|
} xfs_dir2_block_t;
|
|
|
|
/*
|
|
* Pointer to the leaf header embedded in a data block (1-block format)
|
|
*/
|
|
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DIR2_BLOCK_TAIL_P)
|
|
xfs_dir2_block_tail_t *
|
|
xfs_dir2_block_tail_p(struct xfs_mount *mp, xfs_dir2_block_t *block);
|
|
#define XFS_DIR2_BLOCK_TAIL_P(mp,block) xfs_dir2_block_tail_p(mp,block)
|
|
#else
|
|
#define XFS_DIR2_BLOCK_TAIL_P(mp,block) \
|
|
(((xfs_dir2_block_tail_t *)((char *)(block) + (mp)->m_dirblksize)) - 1)
|
|
#endif
|
|
|
|
/*
|
|
* Pointer to the leaf entries embedded in a data block (1-block format)
|
|
*/
|
|
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DIR2_BLOCK_LEAF_P)
|
|
struct xfs_dir2_leaf_entry *xfs_dir2_block_leaf_p(xfs_dir2_block_tail_t *btp);
|
|
#define XFS_DIR2_BLOCK_LEAF_P(btp) \
|
|
xfs_dir2_block_leaf_p(btp)
|
|
#else
|
|
#define XFS_DIR2_BLOCK_LEAF_P(btp) \
|
|
(((struct xfs_dir2_leaf_entry *)(btp)) - INT_GET((btp)->count, ARCH_CONVERT))
|
|
#endif
|
|
|
|
/*
|
|
* Function declarations.
|
|
*/
|
|
|
|
extern int
|
|
xfs_dir2_block_addname(struct xfs_da_args *args);
|
|
|
|
extern int
|
|
xfs_dir2_block_getdents(struct xfs_trans *tp, struct xfs_inode *dp,
|
|
struct uio *uio, int *eofp, struct xfs_dirent *dbp,
|
|
xfs_dir2_put_t put);
|
|
|
|
extern int
|
|
xfs_dir2_block_lookup(struct xfs_da_args *args);
|
|
|
|
extern int
|
|
xfs_dir2_block_removename(struct xfs_da_args *args);
|
|
|
|
extern int
|
|
xfs_dir2_block_replace(struct xfs_da_args *args);
|
|
|
|
extern int
|
|
xfs_dir2_leaf_to_block(struct xfs_da_args *args, struct xfs_dabuf *lbp,
|
|
struct xfs_dabuf *dbp);
|
|
|
|
extern int
|
|
xfs_dir2_sf_to_block(struct xfs_da_args *args);
|
|
|
|
#endif /* __XFS_DIR2_BLOCK_H__ */
|