101 lines
3.1 KiB
C
101 lines
3.1 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
||
|
|
/*
|
||
|
|
* dir.h
|
||
|
|
*
|
||
|
|
* Function prototypes
|
||
|
|
*
|
||
|
|
* Copyright (C) 2002, 2004 Oracle. All rights reserved.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#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 */
|