mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-15 08:44:14 +08:00
2b0143b5c9
that's the bulk of filesystem drivers dealing with inodes of their own Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
117 lines
3.9 KiB
C
117 lines
3.9 KiB
C
/* -*- mode: c; c-basic-offset: 8; -*-
|
|
* vim: noexpandtab sw=8 ts=8 sts=0:
|
|
*
|
|
* dir.h
|
|
*
|
|
* Function prototypes
|
|
*
|
|
* Copyright (C) 2002, 2004 Oracle. 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; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will 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 to the
|
|
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
* Boston, MA 021110-1307, USA.
|
|
*/
|
|
|
|
#ifndef OCFS2_DIR_H
|
|
#define OCFS2_DIR_H
|
|
|
|
struct ocfs2_dx_hinfo {
|
|
u32 major_hash;
|
|
u32 minor_hash;
|
|
};
|
|
|
|
struct ocfs2_dir_lookup_result {
|
|
struct buffer_head *dl_leaf_bh; /* Unindexed leaf
|
|
* block */
|
|
struct ocfs2_dir_entry *dl_entry; /* Target dirent in
|
|
* unindexed leaf */
|
|
|
|
struct buffer_head *dl_dx_root_bh; /* Root of indexed
|
|
* tree */
|
|
|
|
struct buffer_head *dl_dx_leaf_bh; /* Indexed leaf block */
|
|
struct ocfs2_dx_entry *dl_dx_entry; /* Target dx_entry in
|
|
* indexed leaf */
|
|
struct ocfs2_dx_hinfo dl_hinfo; /* Name hash results */
|
|
|
|
struct buffer_head *dl_prev_leaf_bh;/* Previous entry in
|
|
* dir free space
|
|
* list. NULL if
|
|
* previous entry is
|
|
* dx root block. */
|
|
};
|
|
|
|
void ocfs2_free_dir_lookup_result(struct ocfs2_dir_lookup_result *res);
|
|
|
|
int ocfs2_find_entry(const char *name, int namelen,
|
|
struct inode *dir,
|
|
struct ocfs2_dir_lookup_result *lookup);
|
|
int ocfs2_delete_entry(handle_t *handle,
|
|
struct inode *dir,
|
|
struct ocfs2_dir_lookup_result *res);
|
|
int __ocfs2_add_entry(handle_t *handle,
|
|
struct inode *dir,
|
|
const char *name, int namelen,
|
|
struct inode *inode, u64 blkno,
|
|
struct buffer_head *parent_fe_bh,
|
|
struct ocfs2_dir_lookup_result *lookup);
|
|
static inline int ocfs2_add_entry(handle_t *handle,
|
|
struct dentry *dentry,
|
|
struct inode *inode, u64 blkno,
|
|
struct buffer_head *parent_fe_bh,
|
|
struct ocfs2_dir_lookup_result *lookup)
|
|
{
|
|
return __ocfs2_add_entry(handle, d_inode(dentry->d_parent),
|
|
dentry->d_name.name, dentry->d_name.len,
|
|
inode, blkno, parent_fe_bh, lookup);
|
|
}
|
|
int ocfs2_update_entry(struct inode *dir, handle_t *handle,
|
|
struct ocfs2_dir_lookup_result *res,
|
|
struct inode *new_entry_inode);
|
|
|
|
int ocfs2_check_dir_for_entry(struct inode *dir,
|
|
const char *name,
|
|
int namelen);
|
|
int ocfs2_empty_dir(struct inode *inode);
|
|
|
|
int ocfs2_find_files_on_disk(const char *name,
|
|
int namelen,
|
|
u64 *blkno,
|
|
struct inode *inode,
|
|
struct ocfs2_dir_lookup_result *res);
|
|
int ocfs2_lookup_ino_from_name(struct inode *dir, const char *name,
|
|
int namelen, u64 *blkno);
|
|
int ocfs2_readdir(struct file *file, struct dir_context *ctx);
|
|
int ocfs2_dir_foreach(struct inode *inode, struct dir_context *ctx);
|
|
int ocfs2_prepare_dir_for_insert(struct ocfs2_super *osb,
|
|
struct inode *dir,
|
|
struct buffer_head *parent_fe_bh,
|
|
const char *name,
|
|
int namelen,
|
|
struct ocfs2_dir_lookup_result *lookup);
|
|
struct ocfs2_alloc_context;
|
|
int ocfs2_fill_new_dir(struct ocfs2_super *osb,
|
|
handle_t *handle,
|
|
struct inode *parent,
|
|
struct inode *inode,
|
|
struct buffer_head *fe_bh,
|
|
struct ocfs2_alloc_context *data_ac,
|
|
struct ocfs2_alloc_context *meta_ac);
|
|
|
|
int ocfs2_dx_dir_truncate(struct inode *dir, struct buffer_head *di_bh);
|
|
|
|
struct ocfs2_dir_block_trailer *ocfs2_dir_trailer_from_size(int blocksize,
|
|
void *data);
|
|
#endif /* OCFS2_DIR_H */
|