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-rw-r--r--fs/xfs/xfs_dir.h142
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diff --git a/fs/xfs/xfs_dir.h b/fs/xfs/xfs_dir.h
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--- a/fs/xfs/xfs_dir.h
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-/*
- * 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 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_DIR_H__
-#define __XFS_DIR_H__
-
-/*
- * Large directories are structured around Btrees where all the data
- * elements are in the leaf nodes. Filenames are hashed into an int,
- * then that int is used as the index into the Btree. Since the hashval
- * of a filename may not be unique, we may have duplicate keys. The
- * internal links in the Btree are logical block offsets into the file.
- *
- * Small directories use a different format and are packed as tightly
- * as possible so as to fit into the literal area of the inode.
- */
-
-/*========================================================================
- * Function prototypes for the kernel.
- *========================================================================*/
-
-struct uio;
-struct xfs_bmap_free;
-struct xfs_da_args;
-struct xfs_dinode;
-struct xfs_inode;
-struct xfs_mount;
-struct xfs_trans;
-
-/*
- * Directory function types.
- * Put in structures (xfs_dirops_t) for v1 and v2 directories.
- */
-typedef void (*xfs_dir_mount_t)(struct xfs_mount *mp);
-typedef int (*xfs_dir_isempty_t)(struct xfs_inode *dp);
-typedef int (*xfs_dir_init_t)(struct xfs_trans *tp,
- struct xfs_inode *dp,
- struct xfs_inode *pdp);
-typedef int (*xfs_dir_createname_t)(struct xfs_trans *tp,
- struct xfs_inode *dp,
- char *name,
- int namelen,
- xfs_ino_t inum,
- xfs_fsblock_t *first,
- struct xfs_bmap_free *flist,
- xfs_extlen_t total);
-typedef int (*xfs_dir_lookup_t)(struct xfs_trans *tp,
- struct xfs_inode *dp,
- char *name,
- int namelen,
- xfs_ino_t *inum);
-typedef int (*xfs_dir_removename_t)(struct xfs_trans *tp,
- struct xfs_inode *dp,
- char *name,
- int namelen,
- xfs_ino_t ino,
- xfs_fsblock_t *first,
- struct xfs_bmap_free *flist,
- xfs_extlen_t total);
-typedef int (*xfs_dir_getdents_t)(struct xfs_trans *tp,
- struct xfs_inode *dp,
- struct uio *uio,
- int *eofp);
-typedef int (*xfs_dir_replace_t)(struct xfs_trans *tp,
- struct xfs_inode *dp,
- char *name,
- int namelen,
- xfs_ino_t inum,
- xfs_fsblock_t *first,
- struct xfs_bmap_free *flist,
- xfs_extlen_t total);
-typedef int (*xfs_dir_canenter_t)(struct xfs_trans *tp,
- struct xfs_inode *dp,
- char *name,
- int namelen);
-typedef int (*xfs_dir_shortform_validate_ondisk_t)(struct xfs_mount *mp,
- struct xfs_dinode *dip);
-typedef int (*xfs_dir_shortform_to_single_t)(struct xfs_da_args *args);
-
-typedef struct xfs_dirops {
- xfs_dir_mount_t xd_mount;
- xfs_dir_isempty_t xd_isempty;
- xfs_dir_init_t xd_init;
- xfs_dir_createname_t xd_createname;
- xfs_dir_lookup_t xd_lookup;
- xfs_dir_removename_t xd_removename;
- xfs_dir_getdents_t xd_getdents;
- xfs_dir_replace_t xd_replace;
- xfs_dir_canenter_t xd_canenter;
- xfs_dir_shortform_validate_ondisk_t xd_shortform_validate_ondisk;
- xfs_dir_shortform_to_single_t xd_shortform_to_single;
-} xfs_dirops_t;
-
-/*
- * Overall external interface routines.
- */
-void xfs_dir_startup(void); /* called exactly once */
-
-#define XFS_DIR_MOUNT(mp) \
- ((mp)->m_dirops.xd_mount(mp))
-#define XFS_DIR_ISEMPTY(mp,dp) \
- ((mp)->m_dirops.xd_isempty(dp))
-#define XFS_DIR_INIT(mp,tp,dp,pdp) \
- ((mp)->m_dirops.xd_init(tp,dp,pdp))
-#define XFS_DIR_CREATENAME(mp,tp,dp,name,namelen,inum,first,flist,total) \
- ((mp)->m_dirops.xd_createname(tp,dp,name,namelen,inum,first,flist,\
- total))
-#define XFS_DIR_LOOKUP(mp,tp,dp,name,namelen,inum) \
- ((mp)->m_dirops.xd_lookup(tp,dp,name,namelen,inum))
-#define XFS_DIR_REMOVENAME(mp,tp,dp,name,namelen,ino,first,flist,total) \
- ((mp)->m_dirops.xd_removename(tp,dp,name,namelen,ino,first,flist,total))
-#define XFS_DIR_GETDENTS(mp,tp,dp,uio,eofp) \
- ((mp)->m_dirops.xd_getdents(tp,dp,uio,eofp))
-#define XFS_DIR_REPLACE(mp,tp,dp,name,namelen,inum,first,flist,total) \
- ((mp)->m_dirops.xd_replace(tp,dp,name,namelen,inum,first,flist,total))
-#define XFS_DIR_CANENTER(mp,tp,dp,name,namelen) \
- ((mp)->m_dirops.xd_canenter(tp,dp,name,namelen))
-#define XFS_DIR_SHORTFORM_VALIDATE_ONDISK(mp,dip) \
- ((mp)->m_dirops.xd_shortform_validate_ondisk(mp,dip))
-#define XFS_DIR_SHORTFORM_TO_SINGLE(mp,args) \
- ((mp)->m_dirops.xd_shortform_to_single(args))
-
-#define XFS_DIR_IS_V1(mp) ((mp)->m_dirversion == 1)
-#define XFS_DIR_IS_V2(mp) ((mp)->m_dirversion == 2)
-extern xfs_dirops_t xfsv1_dirops;
-extern xfs_dirops_t xfsv2_dirops;
-
-#endif /* __XFS_DIR_H__ */