mirror of
https://github.com/joel16/android_kernel_sony_msm8994.git
synced 2024-12-14 16:09:02 +00:00
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
155 lines
5.5 KiB
C
155 lines
5.5 KiB
C
/*
|
|
* Copyright (c) 2000 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_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)
|
|
extern xfs_dirops_t xfsv1_dirops;
|
|
|
|
#endif /* __XFS_DIR_H__ */
|