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Diffstat (limited to 'fs/xfs/xfs_dir2_leaf.h')
| -rw-r--r-- | fs/xfs/xfs_dir2_leaf.h | 353 |
1 files changed, 0 insertions, 353 deletions
diff --git a/fs/xfs/xfs_dir2_leaf.h b/fs/xfs/xfs_dir2_leaf.h deleted file mode 100644 index 3303cd6f4c0..00000000000 --- a/fs/xfs/xfs_dir2_leaf.h +++ /dev/null @@ -1,353 +0,0 @@ -/* - * 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)0xffffffff) -#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(xfs_dir2_leaf_tail_t *ltp); -#define XFS_DIR2_LEAF_BESTS_P(ltp) xfs_dir2_leaf_bests_p(ltp) -#else -#define XFS_DIR2_LEAF_BESTS_P(ltp) \ - ((xfs_dir2_data_off_t *)(ltp) - INT_GET((ltp)->bestcount, ARCH_CONVERT)) -#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_header(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__ */ |