[thirdparty/xfsprogs-dev.git] / include / xfs_dir2_leaf.h

/*
 * 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_LEAF_H__
#define	__XFS_DIR2_LEAF_H__

/*
 * Directory version 2, leaf block structures.
 */

struct uio;
struct xfs_dabuf;
struct xfs_da_args;
struct xfs_inode;
struct xfs_mount;
struct xfs_trans;

/*
 * Constants.
 */

/*
 * Offset of the leaf/node space.  First block in this space
 * is the btree root.
 */
#define	XFS_DIR2_LEAF_SPACE	1
#define	XFS_DIR2_LEAF_OFFSET	(XFS_DIR2_LEAF_SPACE * XFS_DIR2_SPACE_SIZE)
#define	XFS_DIR2_LEAF_FIRSTDB(mp)	\
	XFS_DIR2_BYTE_TO_DB(mp, XFS_DIR2_LEAF_OFFSET)

/*
 * Types.
 */

/*
 * Offset in data space of a data entry.
 */
typedef	__uint32_t	xfs_dir2_dataptr_t;
#define	XFS_DIR2_MAX_DATAPTR	((xfs_dir2_dataptr_t)0x7fffffff)
#define	XFS_DIR2_NULL_DATAPTR	((xfs_dir2_dataptr_t)0)

/*
 * Structures.
 */

/*
 * Leaf block header.
 */
typedef struct xfs_dir2_leaf_hdr {
	xfs_da_blkinfo_t	info;		/* header for da routines */
	__uint16_t		count;		/* count of entries */
	__uint16_t		stale;		/* count of stale entries */
} xfs_dir2_leaf_hdr_t;

/*
 * Leaf block entry.
 */
typedef struct xfs_dir2_leaf_entry {
	xfs_dahash_t		hashval;	/* hash value of name */
	xfs_dir2_dataptr_t	address;	/* address of data entry */
} xfs_dir2_leaf_entry_t;

/*
 * Leaf block tail.
 */
typedef struct xfs_dir2_leaf_tail {
	__uint32_t		bestcount;
} xfs_dir2_leaf_tail_t;

/*
 * Leaf block.
 * bests and tail are at the end of the block for single-leaf only
 * (magic = XFS_DIR2_LEAF1_MAGIC not XFS_DIR2_LEAFN_MAGIC).
 */
typedef struct xfs_dir2_leaf {
	xfs_dir2_leaf_hdr_t	hdr;		/* leaf header */
	xfs_dir2_leaf_entry_t	ents[1];	/* entries */
						/* ... */
	xfs_dir2_data_off_t	bests[1];	/* best free counts */
	xfs_dir2_leaf_tail_t	tail;		/* leaf tail */
} xfs_dir2_leaf_t;

/*
 * Macros.
 * The DB blocks are logical directory block numbers, not filesystem blocks.
 */

#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DIR2_MAX_LEAF_ENTS)
int
xfs_dir2_max_leaf_ents(struct xfs_mount *mp);
#define	XFS_DIR2_MAX_LEAF_ENTS(mp)	\
	xfs_dir2_max_leaf_ents(mp)
#else
#define	XFS_DIR2_MAX_LEAF_ENTS(mp)	\
	((int)(((mp)->m_dirblksize - (uint)sizeof(xfs_dir2_leaf_hdr_t)) / \
	       (uint)sizeof(xfs_dir2_leaf_entry_t)))
#endif

/*
 * Get address of the bestcount field in the single-leaf block.
 */
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DIR2_LEAF_TAIL_P)
xfs_dir2_leaf_tail_t *
xfs_dir2_leaf_tail_p(struct xfs_mount *mp, xfs_dir2_leaf_t *lp);
#define	XFS_DIR2_LEAF_TAIL_P(mp,lp)	\
	xfs_dir2_leaf_tail_p(mp, lp)
#else
#define	XFS_DIR2_LEAF_TAIL_P(mp,lp)	\
	((xfs_dir2_leaf_tail_t *)\
	 ((char *)(lp) + (mp)->m_dirblksize - \
	  (uint)sizeof(xfs_dir2_leaf_tail_t)))
#endif

/*
 * Get address of the bests array in the single-leaf block.
 */
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DIR2_LEAF_BESTS_P)
xfs_dir2_data_off_t *
xfs_dir2_leaf_bests_p_arch(xfs_dir2_leaf_tail_t *ltp, xfs_arch_t arch);
#define	XFS_DIR2_LEAF_BESTS_P_ARCH(ltp,arch)	xfs_dir2_leaf_bests_p_arch(ltp,arch)
#else
#define	XFS_DIR2_LEAF_BESTS_P_ARCH(ltp,arch)	\
	((xfs_dir2_data_off_t *)(ltp) - INT_GET((ltp)->bestcount, arch))
#endif

/*
 * Convert dataptr to byte in file space
 */
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DIR2_DATAPTR_TO_BYTE)
xfs_dir2_off_t
xfs_dir2_dataptr_to_byte(struct xfs_mount *mp, xfs_dir2_dataptr_t dp);
#define	XFS_DIR2_DATAPTR_TO_BYTE(mp,dp)	xfs_dir2_dataptr_to_byte(mp, dp)
#else
#define	XFS_DIR2_DATAPTR_TO_BYTE(mp,dp)	\
	((xfs_dir2_off_t)(dp) << XFS_DIR2_DATA_ALIGN_LOG)
#endif

/*
 * Convert byte in file space to dataptr.  It had better be aligned.
 */
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DIR2_BYTE_TO_DATAPTR)
xfs_dir2_dataptr_t
xfs_dir2_byte_to_dataptr(struct xfs_mount *mp, xfs_dir2_off_t by);
#define	XFS_DIR2_BYTE_TO_DATAPTR(mp,by)	xfs_dir2_byte_to_dataptr(mp,by)
#else
#define	XFS_DIR2_BYTE_TO_DATAPTR(mp,by)	\
	((xfs_dir2_dataptr_t)((by) >> XFS_DIR2_DATA_ALIGN_LOG))
#endif

/*
 * Convert dataptr to a block number
 */
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DIR2_DATAPTR_TO_DB)
xfs_dir2_db_t
xfs_dir2_dataptr_to_db(struct xfs_mount *mp, xfs_dir2_dataptr_t dp);
#define	XFS_DIR2_DATAPTR_TO_DB(mp,dp)	xfs_dir2_dataptr_to_db(mp, dp)
#else
#define	XFS_DIR2_DATAPTR_TO_DB(mp,dp)	\
	XFS_DIR2_BYTE_TO_DB(mp, XFS_DIR2_DATAPTR_TO_BYTE(mp, dp))
#endif

/*
 * Convert dataptr to a byte offset in a block
 */
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DIR2_DATAPTR_TO_OFF)
xfs_dir2_data_aoff_t
xfs_dir2_dataptr_to_off(struct xfs_mount *mp, xfs_dir2_dataptr_t dp);
#define	XFS_DIR2_DATAPTR_TO_OFF(mp,dp)	xfs_dir2_dataptr_to_off(mp, dp)
#else
#define	XFS_DIR2_DATAPTR_TO_OFF(mp,dp)	\
	XFS_DIR2_BYTE_TO_OFF(mp, XFS_DIR2_DATAPTR_TO_BYTE(mp, dp))
#endif

/*
 * Convert block and offset to byte in space
 */
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DIR2_DB_OFF_TO_BYTE)
xfs_dir2_off_t
xfs_dir2_db_off_to_byte(struct xfs_mount *mp, xfs_dir2_db_t db,
			xfs_dir2_data_aoff_t o);
#define	XFS_DIR2_DB_OFF_TO_BYTE(mp,db,o)	\
	xfs_dir2_db_off_to_byte(mp, db, o)
#else
#define	XFS_DIR2_DB_OFF_TO_BYTE(mp,db,o)	\
	(((xfs_dir2_off_t)(db) << \
	 ((mp)->m_sb.sb_blocklog + (mp)->m_sb.sb_dirblklog)) + (o))
#endif

/*
 * Convert byte in space to (DB) block
 */
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DIR2_BYTE_TO_DB)
xfs_dir2_db_t xfs_dir2_byte_to_db(struct xfs_mount *mp, xfs_dir2_off_t by);
#define	XFS_DIR2_BYTE_TO_DB(mp,by)	xfs_dir2_byte_to_db(mp, by)
#else
#define	XFS_DIR2_BYTE_TO_DB(mp,by)	\
	((xfs_dir2_db_t)((by) >> \
			 ((mp)->m_sb.sb_blocklog + (mp)->m_sb.sb_dirblklog)))
#endif

/*
 * Convert byte in space to (DA) block
 */
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DIR2_BYTE_TO_DA)
xfs_dablk_t xfs_dir2_byte_to_da(struct xfs_mount *mp, xfs_dir2_off_t by);
#define	XFS_DIR2_BYTE_TO_DA(mp,by)	xfs_dir2_byte_to_da(mp, by)
#else
#define	XFS_DIR2_BYTE_TO_DA(mp,by)	\
	XFS_DIR2_DB_TO_DA(mp, XFS_DIR2_BYTE_TO_DB(mp, by))
#endif

/*
 * Convert byte in space to offset in a block
 */
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DIR2_BYTE_TO_OFF)
xfs_dir2_data_aoff_t
xfs_dir2_byte_to_off(struct xfs_mount *mp, xfs_dir2_off_t by);
#define	XFS_DIR2_BYTE_TO_OFF(mp,by)	xfs_dir2_byte_to_off(mp, by)
#else
#define	XFS_DIR2_BYTE_TO_OFF(mp,by)	\
	((xfs_dir2_data_aoff_t)((by) & \
				((1 << ((mp)->m_sb.sb_blocklog + \
					(mp)->m_sb.sb_dirblklog)) - 1)))
#endif

/*
 * Convert block and offset to dataptr
 */
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DIR2_DB_OFF_TO_DATAPTR)
xfs_dir2_dataptr_t
xfs_dir2_db_off_to_dataptr(struct xfs_mount *mp, xfs_dir2_db_t db,
			   xfs_dir2_data_aoff_t o);
#define	XFS_DIR2_DB_OFF_TO_DATAPTR(mp,db,o)	\
	xfs_dir2_db_off_to_dataptr(mp, db, o)
#else
#define	XFS_DIR2_DB_OFF_TO_DATAPTR(mp,db,o)	\
	XFS_DIR2_BYTE_TO_DATAPTR(mp, XFS_DIR2_DB_OFF_TO_BYTE(mp, db, o))
#endif

/*
 * Convert block (DB) to block (dablk)
 */
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DIR2_DB_TO_DA)
xfs_dablk_t xfs_dir2_db_to_da(struct xfs_mount *mp, xfs_dir2_db_t db);
#define	XFS_DIR2_DB_TO_DA(mp,db)	xfs_dir2_db_to_da(mp, db)
#else
#define	XFS_DIR2_DB_TO_DA(mp,db)	\
	((xfs_dablk_t)((db) << (mp)->m_sb.sb_dirblklog))
#endif

/*
 * Convert block (dablk) to block (DB)
 */
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DIR2_DA_TO_DB)
xfs_dir2_db_t xfs_dir2_da_to_db(struct xfs_mount *mp, xfs_dablk_t da);
#define	XFS_DIR2_DA_TO_DB(mp,da)	xfs_dir2_da_to_db(mp, da)
#else
#define	XFS_DIR2_DA_TO_DB(mp,da)	\
	((xfs_dir2_db_t)((da) >> (mp)->m_sb.sb_dirblklog))
#endif

/*
 * Convert block (dablk) to byte offset in space
 */
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DIR2_DA_TO_BYTE)
xfs_dir2_off_t xfs_dir2_da_to_byte(struct xfs_mount *mp, xfs_dablk_t da);
#define XFS_DIR2_DA_TO_BYTE(mp,da)	xfs_dir2_da_to_byte(mp, da)
#else
#define	XFS_DIR2_DA_TO_BYTE(mp,da)	\
	XFS_DIR2_DB_OFF_TO_BYTE(mp, XFS_DIR2_DA_TO_DB(mp, da), 0)
#endif

/*
 * Function declarations.
 */

extern int
	xfs_dir2_block_to_leaf(struct xfs_da_args *args, struct xfs_dabuf *dbp);

extern int
	xfs_dir2_leaf_addname(struct xfs_da_args *args);

extern void
	xfs_dir2_leaf_compact(struct xfs_da_args *args, struct xfs_dabuf *bp);

extern void
	xfs_dir2_leaf_compact_x1(struct xfs_dabuf *bp, int *indexp,
				 int *lowstalep, int *highstalep, int *lowlogp,
				 int *highlogp);

extern int
	xfs_dir2_leaf_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_leaf_init(struct xfs_da_args *args, xfs_dir2_db_t bno,
			   struct xfs_dabuf **bpp, int magic);

extern void
	xfs_dir2_leaf_log_ents(struct xfs_trans *tp, struct xfs_dabuf *bp,
			       int first, int last);

extern void
	xfs_dir2_leaf_log_bests(struct xfs_trans *tp, struct xfs_dabuf *bp,
				int first, int last);

extern void
	xfs_dir2_leaf_log_header(struct xfs_trans *tp, struct xfs_dabuf *bp);

extern void
	xfs_dir2_leaf_log_tail(struct xfs_trans *tp, struct xfs_dabuf *bp);

extern int
	xfs_dir2_leaf_lookup(struct xfs_da_args *args);

extern int
	xfs_dir2_leaf_removename(struct xfs_da_args *args);

extern int
	xfs_dir2_leaf_replace(struct xfs_da_args *args);

extern int
	xfs_dir2_leaf_search_hash(struct xfs_da_args *args,
				  struct xfs_dabuf *lbp);
extern int
	xfs_dir2_leaf_trim_data(struct xfs_da_args *args, struct xfs_dabuf *lbp,				xfs_dir2_db_t db);

extern int
	xfs_dir2_node_to_leaf(struct xfs_da_state *state);

#endif	/* __XFS_DIR2_LEAF_H__ */
Commit	Line	Data
2bd0ea18	1	/*
0d3e0b37	2	* Copyright (c) 2000-2001 Silicon Graphics, Inc. All Rights Reserved.
5000d01d	3	*
2bd0ea18 NS	4	* This program is free software; you can redistribute it and/or modify it
	5	* under the terms of version 2 of the GNU General Public License as
	6	* published by the Free Software Foundation.
5000d01d	7	*
2bd0ea18 NS	8	* This program is distributed in the hope that it would be useful, but
	9	* WITHOUT ANY WARRANTY; without even the implied warranty of
	10	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
5000d01d	11	*
2bd0ea18 NS	12	* Further, this software is distributed without any warranty that it is
2bd0ea18 NS	13	* free of the rightful claim of any third person regarding infringement
dfc130f3	14	* or the like. Any license provided herein, whether implied or
2bd0ea18 NS	15	* otherwise, applies only to this software file. Patent licenses, if
	16	* any, provided herein do not apply to combinations of this program with
	17	* other software, or any other product whatsoever.
5000d01d	18	*
2bd0ea18 NS	19	* You should have received a copy of the GNU General Public License along
	20	* with this program; if not, write the Free Software Foundation, Inc., 59
	21	* Temple Place - Suite 330, Boston MA 02111-1307, USA.
5000d01d	22	*
2bd0ea18 NS	23	* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
2bd0ea18 NS	24	* Mountain View, CA 94043, or:
5000d01d SL	25	*
	26	* http://www.sgi.com
	27	*
	28	* For further information regarding this notice, see:
	29	*
2bd0ea18 NS	30	* http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
	31	*/
	32	#ifndef __XFS_DIR2_LEAF_H__
dfc130f3	33	#define __XFS_DIR2_LEAF_H__
2bd0ea18 NS	34
	35	/*
	36	* Directory version 2, leaf block structures.
	37	*/
	38
2bd0ea18 NS	39	struct uio;
	40	struct xfs_dabuf;
	41	struct xfs_da_args;
	42	struct xfs_inode;
	43	struct xfs_mount;
	44	struct xfs_trans;
	45
	46	/*
	47	* Constants.
	48	*/
	49
	50	/*
	51	* Offset of the leaf/node space. First block in this space
	52	* is the btree root.
	53	*/
dfc130f3 RC	54	#define XFS_DIR2_LEAF_SPACE 1
	55	#define XFS_DIR2_LEAF_OFFSET (XFS_DIR2_LEAF_SPACE * XFS_DIR2_SPACE_SIZE)
	56	#define XFS_DIR2_LEAF_FIRSTDB(mp) \
2bd0ea18 NS	57	XFS_DIR2_BYTE_TO_DB(mp, XFS_DIR2_LEAF_OFFSET)
	58
	59	/*
	60	* Types.
	61	*/
	62
	63	/*
	64	* Offset in data space of a data entry.
	65	*/
dfc130f3 RC	66	typedef __uint32_t xfs_dir2_dataptr_t;
	67	#define XFS_DIR2_MAX_DATAPTR ((xfs_dir2_dataptr_t)0x7fffffff)
	68	#define XFS_DIR2_NULL_DATAPTR ((xfs_dir2_dataptr_t)0)
2bd0ea18 NS	69
	70	/*
	71	* Structures.
	72	*/
	73
	74	/*
	75	* Leaf block header.
	76	*/
	77	typedef struct xfs_dir2_leaf_hdr {
	78	xfs_da_blkinfo_t info; /* header for da routines */
	79	__uint16_t count; /* count of entries */
	80	__uint16_t stale; /* count of stale entries */
	81	} xfs_dir2_leaf_hdr_t;
	82
	83	/*
	84	* Leaf block entry.
	85	*/
	86	typedef struct xfs_dir2_leaf_entry {
	87	xfs_dahash_t hashval; /* hash value of name */
	88	xfs_dir2_dataptr_t address; /* address of data entry */
	89	} xfs_dir2_leaf_entry_t;
	90
	91	/*
	92	* Leaf block tail.
	93	*/
	94	typedef struct xfs_dir2_leaf_tail {
	95	__uint32_t bestcount;
	96	} xfs_dir2_leaf_tail_t;
	97
	98	/*
	99	* Leaf block.
	100	* bests and tail are at the end of the block for single-leaf only
	101	* (magic = XFS_DIR2_LEAF1_MAGIC not XFS_DIR2_LEAFN_MAGIC).
	102	*/
	103	typedef struct xfs_dir2_leaf {
	104	xfs_dir2_leaf_hdr_t hdr; /* leaf header */
	105	xfs_dir2_leaf_entry_t ents[1]; /* entries */
	106	/* ... */
	107	xfs_dir2_data_off_t bests[1]; /* best free counts */
	108	xfs_dir2_leaf_tail_t tail; /* leaf tail */
	109	} xfs_dir2_leaf_t;
	110
	111	/*
	112	* Macros.
	113	* The DB blocks are logical directory block numbers, not filesystem blocks.
	114	*/
	115
	116	#if XFS_WANT_FUNCS \|\| (XFS_WANT_SPACE && XFSSO_XFS_DIR2_MAX_LEAF_ENTS)
	117	int
	118	xfs_dir2_max_leaf_ents(struct xfs_mount *mp);
dfc130f3	119	#define XFS_DIR2_MAX_LEAF_ENTS(mp) \
2bd0ea18 NS	120	xfs_dir2_max_leaf_ents(mp)
2bd0ea18 NS	121	#else
dfc130f3	122	#define XFS_DIR2_MAX_LEAF_ENTS(mp) \
2bd0ea18 NS	123	((int)(((mp)->m_dirblksize - (uint)sizeof(xfs_dir2_leaf_hdr_t)) / \
	124	(uint)sizeof(xfs_dir2_leaf_entry_t)))
	125	#endif
	126
	127	/*
	128	* Get address of the bestcount field in the single-leaf block.
	129	*/
	130	#if XFS_WANT_FUNCS \|\| (XFS_WANT_SPACE && XFSSO_XFS_DIR2_LEAF_TAIL_P)
	131	xfs_dir2_leaf_tail_t *
	132	xfs_dir2_leaf_tail_p(struct xfs_mount mp, xfs_dir2_leaf_t lp);
dfc130f3	133	#define XFS_DIR2_LEAF_TAIL_P(mp,lp) \
2bd0ea18 NS	134	xfs_dir2_leaf_tail_p(mp, lp)
2bd0ea18 NS	135	#else
dfc130f3	136	#define XFS_DIR2_LEAF_TAIL_P(mp,lp) \
2bd0ea18 NS	137	((xfs_dir2_leaf_tail_t *)\
	138	((char *)(lp) + (mp)->m_dirblksize - \
	139	(uint)sizeof(xfs_dir2_leaf_tail_t)))
	140	#endif
	141
	142	/*
	143	* Get address of the bests array in the single-leaf block.
	144	*/
	145	#if XFS_WANT_FUNCS \|\| (XFS_WANT_SPACE && XFSSO_XFS_DIR2_LEAF_BESTS_P)
	146	xfs_dir2_data_off_t *
	147	xfs_dir2_leaf_bests_p_arch(xfs_dir2_leaf_tail_t *ltp, xfs_arch_t arch);
dfc130f3	148	#define XFS_DIR2_LEAF_BESTS_P_ARCH(ltp,arch) xfs_dir2_leaf_bests_p_arch(ltp,arch)
2bd0ea18	149	#else
dfc130f3	150	#define XFS_DIR2_LEAF_BESTS_P_ARCH(ltp,arch) \
2bd0ea18 NS	151	((xfs_dir2_data_off_t *)(ltp) - INT_GET((ltp)->bestcount, arch))
	152	#endif
	153
	154	/*
	155	* Convert dataptr to byte in file space
	156	*/
	157	#if XFS_WANT_FUNCS \|\| (XFS_WANT_SPACE && XFSSO_XFS_DIR2_DATAPTR_TO_BYTE)
	158	xfs_dir2_off_t
	159	xfs_dir2_dataptr_to_byte(struct xfs_mount *mp, xfs_dir2_dataptr_t dp);
dfc130f3	160	#define XFS_DIR2_DATAPTR_TO_BYTE(mp,dp) xfs_dir2_dataptr_to_byte(mp, dp)
2bd0ea18	161	#else
dfc130f3	162	#define XFS_DIR2_DATAPTR_TO_BYTE(mp,dp) \
2bd0ea18 NS	163	((xfs_dir2_off_t)(dp) << XFS_DIR2_DATA_ALIGN_LOG)
	164	#endif
	165
	166	/*
	167	* Convert byte in file space to dataptr. It had better be aligned.
	168	*/
	169	#if XFS_WANT_FUNCS \|\| (XFS_WANT_SPACE && XFSSO_XFS_DIR2_BYTE_TO_DATAPTR)
	170	xfs_dir2_dataptr_t
	171	xfs_dir2_byte_to_dataptr(struct xfs_mount *mp, xfs_dir2_off_t by);
dfc130f3	172	#define XFS_DIR2_BYTE_TO_DATAPTR(mp,by) xfs_dir2_byte_to_dataptr(mp,by)
2bd0ea18	173	#else
dfc130f3	174	#define XFS_DIR2_BYTE_TO_DATAPTR(mp,by) \
2bd0ea18 NS	175	((xfs_dir2_dataptr_t)((by) >> XFS_DIR2_DATA_ALIGN_LOG))
	176	#endif
	177
	178	/*
	179	* Convert dataptr to a block number
	180	*/
	181	#if XFS_WANT_FUNCS \|\| (XFS_WANT_SPACE && XFSSO_XFS_DIR2_DATAPTR_TO_DB)
	182	xfs_dir2_db_t
	183	xfs_dir2_dataptr_to_db(struct xfs_mount *mp, xfs_dir2_dataptr_t dp);
dfc130f3	184	#define XFS_DIR2_DATAPTR_TO_DB(mp,dp) xfs_dir2_dataptr_to_db(mp, dp)
2bd0ea18	185	#else
dfc130f3	186	#define XFS_DIR2_DATAPTR_TO_DB(mp,dp) \
2bd0ea18 NS	187	XFS_DIR2_BYTE_TO_DB(mp, XFS_DIR2_DATAPTR_TO_BYTE(mp, dp))
	188	#endif
	189
	190	/*
	191	* Convert dataptr to a byte offset in a block
	192	*/
	193	#if XFS_WANT_FUNCS \|\| (XFS_WANT_SPACE && XFSSO_XFS_DIR2_DATAPTR_TO_OFF)
	194	xfs_dir2_data_aoff_t
	195	xfs_dir2_dataptr_to_off(struct xfs_mount *mp, xfs_dir2_dataptr_t dp);
dfc130f3	196	#define XFS_DIR2_DATAPTR_TO_OFF(mp,dp) xfs_dir2_dataptr_to_off(mp, dp)
2bd0ea18	197	#else
dfc130f3	198	#define XFS_DIR2_DATAPTR_TO_OFF(mp,dp) \
2bd0ea18 NS	199	XFS_DIR2_BYTE_TO_OFF(mp, XFS_DIR2_DATAPTR_TO_BYTE(mp, dp))
	200	#endif
	201
	202	/*
	203	* Convert block and offset to byte in space
	204	*/
	205	#if XFS_WANT_FUNCS \|\| (XFS_WANT_SPACE && XFSSO_XFS_DIR2_DB_OFF_TO_BYTE)
	206	xfs_dir2_off_t
	207	xfs_dir2_db_off_to_byte(struct xfs_mount *mp, xfs_dir2_db_t db,
	208	xfs_dir2_data_aoff_t o);
dfc130f3	209	#define XFS_DIR2_DB_OFF_TO_BYTE(mp,db,o) \
2bd0ea18 NS	210	xfs_dir2_db_off_to_byte(mp, db, o)
2bd0ea18 NS	211	#else
dfc130f3	212	#define XFS_DIR2_DB_OFF_TO_BYTE(mp,db,o) \
2bd0ea18 NS	213	(((xfs_dir2_off_t)(db) << \
	214	((mp)->m_sb.sb_blocklog + (mp)->m_sb.sb_dirblklog)) + (o))
	215	#endif
	216
	217	/*
	218	* Convert byte in space to (DB) block
	219	*/
	220	#if XFS_WANT_FUNCS \|\| (XFS_WANT_SPACE && XFSSO_XFS_DIR2_BYTE_TO_DB)
	221	xfs_dir2_db_t xfs_dir2_byte_to_db(struct xfs_mount *mp, xfs_dir2_off_t by);
dfc130f3	222	#define XFS_DIR2_BYTE_TO_DB(mp,by) xfs_dir2_byte_to_db(mp, by)
2bd0ea18	223	#else
dfc130f3	224	#define XFS_DIR2_BYTE_TO_DB(mp,by) \
2bd0ea18 NS	225	((xfs_dir2_db_t)((by) >> \
	226	((mp)->m_sb.sb_blocklog + (mp)->m_sb.sb_dirblklog)))
	227	#endif
	228
	229	/*
	230	* Convert byte in space to (DA) block
	231	*/
	232	#if XFS_WANT_FUNCS \|\| (XFS_WANT_SPACE && XFSSO_XFS_DIR2_BYTE_TO_DA)
	233	xfs_dablk_t xfs_dir2_byte_to_da(struct xfs_mount *mp, xfs_dir2_off_t by);
dfc130f3	234	#define XFS_DIR2_BYTE_TO_DA(mp,by) xfs_dir2_byte_to_da(mp, by)
2bd0ea18	235	#else
dfc130f3	236	#define XFS_DIR2_BYTE_TO_DA(mp,by) \
2bd0ea18 NS	237	XFS_DIR2_DB_TO_DA(mp, XFS_DIR2_BYTE_TO_DB(mp, by))
	238	#endif
	239
	240	/*
	241	* Convert byte in space to offset in a block
	242	*/
	243	#if XFS_WANT_FUNCS \|\| (XFS_WANT_SPACE && XFSSO_XFS_DIR2_BYTE_TO_OFF)
	244	xfs_dir2_data_aoff_t
	245	xfs_dir2_byte_to_off(struct xfs_mount *mp, xfs_dir2_off_t by);
dfc130f3	246	#define XFS_DIR2_BYTE_TO_OFF(mp,by) xfs_dir2_byte_to_off(mp, by)
2bd0ea18	247	#else
dfc130f3	248	#define XFS_DIR2_BYTE_TO_OFF(mp,by) \
2bd0ea18 NS	249	((xfs_dir2_data_aoff_t)((by) & \
	250	((1 << ((mp)->m_sb.sb_blocklog + \
	251	(mp)->m_sb.sb_dirblklog)) - 1)))
	252	#endif
	253
	254	/*
	255	* Convert block and offset to dataptr
	256	*/
	257	#if XFS_WANT_FUNCS \|\| (XFS_WANT_SPACE && XFSSO_XFS_DIR2_DB_OFF_TO_DATAPTR)
	258	xfs_dir2_dataptr_t
	259	xfs_dir2_db_off_to_dataptr(struct xfs_mount *mp, xfs_dir2_db_t db,
	260	xfs_dir2_data_aoff_t o);
dfc130f3	261	#define XFS_DIR2_DB_OFF_TO_DATAPTR(mp,db,o) \
2bd0ea18 NS	262	xfs_dir2_db_off_to_dataptr(mp, db, o)
2bd0ea18 NS	263	#else
dfc130f3	264	#define XFS_DIR2_DB_OFF_TO_DATAPTR(mp,db,o) \
2bd0ea18 NS	265	XFS_DIR2_BYTE_TO_DATAPTR(mp, XFS_DIR2_DB_OFF_TO_BYTE(mp, db, o))
	266	#endif
	267
	268	/*
	269	* Convert block (DB) to block (dablk)
	270	*/
	271	#if XFS_WANT_FUNCS \|\| (XFS_WANT_SPACE && XFSSO_XFS_DIR2_DB_TO_DA)
	272	xfs_dablk_t xfs_dir2_db_to_da(struct xfs_mount *mp, xfs_dir2_db_t db);
dfc130f3	273	#define XFS_DIR2_DB_TO_DA(mp,db) xfs_dir2_db_to_da(mp, db)
2bd0ea18	274	#else
dfc130f3	275	#define XFS_DIR2_DB_TO_DA(mp,db) \
2bd0ea18 NS	276	((xfs_dablk_t)((db) << (mp)->m_sb.sb_dirblklog))
	277	#endif
	278
	279	/*
	280	* Convert block (dablk) to block (DB)
	281	*/
	282	#if XFS_WANT_FUNCS \|\| (XFS_WANT_SPACE && XFSSO_XFS_DIR2_DA_TO_DB)
	283	xfs_dir2_db_t xfs_dir2_da_to_db(struct xfs_mount *mp, xfs_dablk_t da);
dfc130f3	284	#define XFS_DIR2_DA_TO_DB(mp,da) xfs_dir2_da_to_db(mp, da)
2bd0ea18	285	#else
dfc130f3	286	#define XFS_DIR2_DA_TO_DB(mp,da) \
2bd0ea18 NS	287	((xfs_dir2_db_t)((da) >> (mp)->m_sb.sb_dirblklog))
	288	#endif
	289
	290	/*
	291	* Convert block (dablk) to byte offset in space
	292	*/
	293	#if XFS_WANT_FUNCS \|\| (XFS_WANT_SPACE && XFSSO_XFS_DIR2_DA_TO_BYTE)
	294	xfs_dir2_off_t xfs_dir2_da_to_byte(struct xfs_mount *mp, xfs_dablk_t da);
	295	#define XFS_DIR2_DA_TO_BYTE(mp,da) xfs_dir2_da_to_byte(mp, da)
	296	#else
dfc130f3	297	#define XFS_DIR2_DA_TO_BYTE(mp,da) \
2bd0ea18 NS	298	XFS_DIR2_DB_OFF_TO_BYTE(mp, XFS_DIR2_DA_TO_DB(mp, da), 0)
	299	#endif
	300
	301	/*
	302	* Function declarations.
	303	*/
	304
	305	extern int
	306	xfs_dir2_block_to_leaf(struct xfs_da_args args, struct xfs_dabuf dbp);
	307
	308	extern int
	309	xfs_dir2_leaf_addname(struct xfs_da_args *args);
	310
	311	extern void
	312	xfs_dir2_leaf_compact(struct xfs_da_args args, struct xfs_dabuf bp);
	313
	314	extern void
	315	xfs_dir2_leaf_compact_x1(struct xfs_dabuf bp, int indexp,
	316	int lowstalep, int highstalep, int *lowlogp,
	317	int *highlogp);
	318
	319	extern int
	320	xfs_dir2_leaf_getdents(struct xfs_trans tp, struct xfs_inode dp,
0e266570	321	struct uio uio, int eofp, struct xfs_dirent *dbp,
2bd0ea18 NS	322	xfs_dir2_put_t put);
	323
	324	extern int
	325	xfs_dir2_leaf_init(struct xfs_da_args *args, xfs_dir2_db_t bno,
	326	struct xfs_dabuf **bpp, int magic);
	327
	328	extern void
	329	xfs_dir2_leaf_log_ents(struct xfs_trans tp, struct xfs_dabuf bp,
	330	int first, int last);
	331
	332	extern void
	333	xfs_dir2_leaf_log_bests(struct xfs_trans tp, struct xfs_dabuf bp,
	334	int first, int last);
	335
	336	extern void
	337	xfs_dir2_leaf_log_header(struct xfs_trans tp, struct xfs_dabuf bp);
	338
	339	extern void
	340	xfs_dir2_leaf_log_tail(struct xfs_trans tp, struct xfs_dabuf bp);
	341
	342	extern int
	343	xfs_dir2_leaf_lookup(struct xfs_da_args *args);
	344
	345	extern int
	346	xfs_dir2_leaf_removename(struct xfs_da_args *args);
	347
	348	extern int
	349	xfs_dir2_leaf_replace(struct xfs_da_args *args);
	350
	351	extern int
	352	xfs_dir2_leaf_search_hash(struct xfs_da_args *args,
	353	struct xfs_dabuf *lbp);
	354	extern int
	355	xfs_dir2_leaf_trim_data(struct xfs_da_args args, struct xfs_dabuf lbp, xfs_dir2_db_t db);
	356
	357	extern int
	358	xfs_dir2_node_to_leaf(struct xfs_da_state *state);
	359
	360	#endif /* __XFS_DIR2_LEAF_H__ */