X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=fs%2Fxfs%2Fxfs_dir2_node.h;h=c7c870ee785774cc10ea50c292db2844325ff066;hb=43bc926fffd92024b46cafaf7350d669ba9ca884;hp=96db420c7c5cda156709ee766bb5c2093a1a70ac;hpb=cee37fe97739d85991964371c1f3a745c00dd236;p=linux-2.6.git diff --git a/fs/xfs/xfs_dir2_node.h b/fs/xfs/xfs_dir2_node.h index 96db420c7..c7c870ee7 100644 --- a/fs/xfs/xfs_dir2_node.h +++ b/fs/xfs/xfs_dir2_node.h @@ -1,33 +1,19 @@ /* - * Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved. + * Copyright (c) 2000,2005 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 + * 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. + * 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. * - * 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/ + * 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_NODE_H__ #define __XFS_DIR2_NODE_H__ @@ -44,10 +30,6 @@ struct xfs_da_state_blk; struct xfs_inode; struct xfs_trans; -/* - * Constants. - */ - /* * Offset of the freespace index. */ @@ -58,102 +40,65 @@ struct xfs_trans; #define XFS_DIR2_FREE_MAGIC 0x58443246 /* XD2F */ -/* - * Structures. - */ typedef struct xfs_dir2_free_hdr { - __uint32_t magic; /* XFS_DIR2_FREE_MAGIC */ - __int32_t firstdb; /* db of first entry */ - __int32_t nvalid; /* count of valid entries */ - __int32_t nused; /* count of used entries */ + __be32 magic; /* XFS_DIR2_FREE_MAGIC */ + __be32 firstdb; /* db of first entry */ + __be32 nvalid; /* count of valid entries */ + __be32 nused; /* count of used entries */ } xfs_dir2_free_hdr_t; typedef struct xfs_dir2_free { xfs_dir2_free_hdr_t hdr; /* block header */ - xfs_dir2_data_off_t bests[1]; /* best free counts */ + __be16 bests[1]; /* best free counts */ /* unused entries are -1 */ } xfs_dir2_free_t; + #define XFS_DIR2_MAX_FREE_BESTS(mp) \ (((mp)->m_dirblksize - (uint)sizeof(xfs_dir2_free_hdr_t)) / \ (uint)sizeof(xfs_dir2_data_off_t)) -/* - * Macros. - */ - /* * Convert data space db to the corresponding free db. */ -#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DIR2_DB_TO_FDB) -xfs_dir2_db_t -xfs_dir2_db_to_fdb(struct xfs_mount *mp, xfs_dir2_db_t db); #define XFS_DIR2_DB_TO_FDB(mp,db) xfs_dir2_db_to_fdb(mp, db) -#else -#define XFS_DIR2_DB_TO_FDB(mp,db) \ - (XFS_DIR2_FREE_FIRSTDB(mp) + (db) / XFS_DIR2_MAX_FREE_BESTS(mp)) -#endif +static inline xfs_dir2_db_t +xfs_dir2_db_to_fdb(struct xfs_mount *mp, xfs_dir2_db_t db) +{ + return (XFS_DIR2_FREE_FIRSTDB(mp) + (db) / XFS_DIR2_MAX_FREE_BESTS(mp)); +} /* * Convert data space db to the corresponding index in a free db. */ -#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DIR2_DB_TO_FDINDEX) -int -xfs_dir2_db_to_fdindex(struct xfs_mount *mp, xfs_dir2_db_t db); #define XFS_DIR2_DB_TO_FDINDEX(mp,db) xfs_dir2_db_to_fdindex(mp, db) -#else -#define XFS_DIR2_DB_TO_FDINDEX(mp,db) ((db) % XFS_DIR2_MAX_FREE_BESTS(mp)) -#endif - -/* - * Functions. - */ - -extern void - xfs_dir2_free_log_bests(struct xfs_trans *tp, struct xfs_dabuf *bp, - int first, int last); - -extern int - xfs_dir2_leaf_to_node(struct xfs_da_args *args, struct xfs_dabuf *lbp); - -extern xfs_dahash_t - xfs_dir2_leafn_lasthash(struct xfs_dabuf *bp, int *count); - -extern int - xfs_dir2_leafn_lookup_int(struct xfs_dabuf *bp, - struct xfs_da_args *args, int *indexp, - struct xfs_da_state *state); - -extern int - xfs_dir2_leafn_order(struct xfs_dabuf *leaf1_bp, - struct xfs_dabuf *leaf2_bp); - -extern int - xfs_dir2_leafn_split(struct xfs_da_state *state, - struct xfs_da_state_blk *oldblk, - struct xfs_da_state_blk *newblk); - -extern int - xfs_dir2_leafn_toosmall(struct xfs_da_state *state, int *action); - -extern void - xfs_dir2_leafn_unbalance(struct xfs_da_state *state, - struct xfs_da_state_blk *drop_blk, - struct xfs_da_state_blk *save_blk); - -extern int - xfs_dir2_node_addname(struct xfs_da_args *args); - -extern int - xfs_dir2_node_lookup(struct xfs_da_args *args); - -extern int - xfs_dir2_node_removename(struct xfs_da_args *args); - -extern int - xfs_dir2_node_replace(struct xfs_da_args *args); - -extern int - xfs_dir2_node_trim_free(struct xfs_da_args *args, xfs_fileoff_t fo, - int *rvalp); +static inline int +xfs_dir2_db_to_fdindex(struct xfs_mount *mp, xfs_dir2_db_t db) +{ + return ((db) % XFS_DIR2_MAX_FREE_BESTS(mp)); +} + +extern void xfs_dir2_free_log_bests(struct xfs_trans *tp, struct xfs_dabuf *bp, + int first, int last); +extern int xfs_dir2_leaf_to_node(struct xfs_da_args *args, + struct xfs_dabuf *lbp); +extern xfs_dahash_t xfs_dir2_leafn_lasthash(struct xfs_dabuf *bp, int *count); +extern int xfs_dir2_leafn_lookup_int(struct xfs_dabuf *bp, + struct xfs_da_args *args, int *indexp, + struct xfs_da_state *state); +extern int xfs_dir2_leafn_order(struct xfs_dabuf *leaf1_bp, + struct xfs_dabuf *leaf2_bp); +extern int xfs_dir2_leafn_split(struct xfs_da_state *state, + struct xfs_da_state_blk *oldblk, + struct xfs_da_state_blk *newblk); +extern int xfs_dir2_leafn_toosmall(struct xfs_da_state *state, int *action); +extern void xfs_dir2_leafn_unbalance(struct xfs_da_state *state, + struct xfs_da_state_blk *drop_blk, + struct xfs_da_state_blk *save_blk); +extern int xfs_dir2_node_addname(struct xfs_da_args *args); +extern int xfs_dir2_node_lookup(struct xfs_da_args *args); +extern int xfs_dir2_node_removename(struct xfs_da_args *args); +extern int xfs_dir2_node_replace(struct xfs_da_args *args); +extern int xfs_dir2_node_trim_free(struct xfs_da_args *args, xfs_fileoff_t fo, + int *rvalp); #endif /* __XFS_DIR2_NODE_H__ */