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- /* 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 */
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