110 lines
3.4 KiB
C
110 lines
3.4 KiB
C
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/*
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* Copyright (c) 2000-2001 Silicon Graphics, Inc. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*
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* Further, this software is distributed without any warranty that it is
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* free of the rightful claim of any third person regarding infringement
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* or the like. Any license provided herein, whether implied or
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* otherwise, applies only to this software file. Patent licenses, if
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* any, provided herein do not apply to combinations of this program with
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* other software, or any other product whatsoever.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write the Free Software Foundation, Inc., 59
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* Temple Place - Suite 330, Boston MA 02111-1307, USA.
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*
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* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
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* Mountain View, CA 94043, or:
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*
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* http://www.sgi.com
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*
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* For further information regarding this notice, see:
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*
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* http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
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*/
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#ifndef __XFS_DIR2_H__
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#define __XFS_DIR2_H__
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struct uio;
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struct xfs_dabuf;
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struct xfs_da_args;
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struct xfs_dir2_put_args;
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struct xfs_inode;
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struct xfs_trans;
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/*
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* Directory version 2.
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* There are 4 possible formats:
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* shortform
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* single block - data with embedded leaf at the end
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* multiple data blocks, single leaf+freeindex block
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* data blocks, node&leaf blocks (btree), freeindex blocks
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*
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* The shortform format is in xfs_dir2_sf.h.
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* The single block format is in xfs_dir2_block.h.
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* The data block format is in xfs_dir2_data.h.
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* The leaf and freeindex block formats are in xfs_dir2_leaf.h.
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* Node blocks are the same as the other version, in xfs_da_btree.h.
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*/
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/*
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* Byte offset in data block and shortform entry.
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*/
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typedef __uint16_t xfs_dir2_data_off_t;
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#define NULLDATAOFF 0xffffU
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typedef uint xfs_dir2_data_aoff_t; /* argument form */
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/*
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* Directory block number (logical dirblk in file)
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*/
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typedef __uint32_t xfs_dir2_db_t;
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/*
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* Byte offset in a directory.
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*/
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typedef xfs_off_t xfs_dir2_off_t;
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/*
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* For getdents, argument struct for put routines.
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*/
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typedef int (*xfs_dir2_put_t)(struct xfs_dir2_put_args *pa);
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typedef struct xfs_dir2_put_args {
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xfs_off_t cook; /* cookie of (next) entry */
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xfs_intino_t ino; /* inode number */
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struct xfs_dirent *dbp; /* buffer pointer */
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char *name; /* directory entry name */
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int namelen; /* length of name */
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int done; /* output: set if value was stored */
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xfs_dir2_put_t put; /* put function ptr (i/o) */
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struct uio *uio; /* uio control structure */
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} xfs_dir2_put_args_t;
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#define XFS_DIR_IS_V2(mp) ((mp)->m_dirversion == 2)
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extern xfs_dirops_t xfsv2_dirops;
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/*
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* Other interfaces used by the rest of the dir v2 code.
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*/
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extern int
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xfs_dir2_grow_inode(struct xfs_da_args *args, int space,
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xfs_dir2_db_t *dbp);
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extern int
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xfs_dir2_isblock(struct xfs_trans *tp, struct xfs_inode *dp, int *vp);
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extern int
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xfs_dir2_isleaf(struct xfs_trans *tp, struct xfs_inode *dp, int *vp);
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extern int
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xfs_dir2_shrink_inode(struct xfs_da_args *args, xfs_dir2_db_t db,
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struct xfs_dabuf *bp);
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#endif /* __XFS_DIR2_H__ */
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