forked from luck/tmp_suning_uos_patched
e922fffa41
SGI-PV: 943272 SGI-Modid: xfs-linux-melb:xfs-kern:25491a Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nathan Scott <nathans@sgi.com>
96 lines
3.0 KiB
C
96 lines
3.0 KiB
C
/*
|
|
* 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_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 {
|
|
__be32 count; /* count of leaf entries */
|
|
__be32 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)
|
|
*/
|
|
#define XFS_DIR2_BLOCK_TAIL_P(mp,block) xfs_dir2_block_tail_p(mp,block)
|
|
static inline xfs_dir2_block_tail_t *
|
|
xfs_dir2_block_tail_p(struct xfs_mount *mp, xfs_dir2_block_t *block)
|
|
{
|
|
return (((xfs_dir2_block_tail_t *)
|
|
((char *)(block) + (mp)->m_dirblksize)) - 1);
|
|
}
|
|
|
|
/*
|
|
* Pointer to the leaf entries embedded in a data block (1-block format)
|
|
*/
|
|
#define XFS_DIR2_BLOCK_LEAF_P(btp) xfs_dir2_block_leaf_p(btp)
|
|
static inline struct xfs_dir2_leaf_entry *
|
|
xfs_dir2_block_leaf_p(xfs_dir2_block_tail_t *btp)
|
|
{
|
|
return ((struct xfs_dir2_leaf_entry *)btp) - be32_to_cpu(btp->count);
|
|
}
|
|
|
|
/*
|
|
* 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__ */
|