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Diffstat (limited to 'fs/xfs/xfs_dir.h')
| -rw-r--r-- | fs/xfs/xfs_dir.h | 142 |
1 files changed, 0 insertions, 142 deletions
diff --git a/fs/xfs/xfs_dir.h b/fs/xfs/xfs_dir.h index 8cc8afb9f6c..e69de29bb2d 100644 --- a/fs/xfs/xfs_dir.h +++ b/fs/xfs/xfs_dir.h @@ -1,142 +0,0 @@ -/* - * 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__ */ |