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100 lines
3.1 KiB
100 lines
3.1 KiB
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
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/* |
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* dir.h |
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* |
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* Function prototypes |
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* |
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* Copyright (C) 2002, 2004 Oracle. All rights reserved. |
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*/ |
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#ifndef OCFS2_DIR_H |
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#define OCFS2_DIR_H |
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struct ocfs2_dx_hinfo { |
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u32 major_hash; |
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u32 minor_hash; |
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}; |
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struct ocfs2_dir_lookup_result { |
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struct buffer_head *dl_leaf_bh; /* Unindexed leaf |
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* block */ |
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struct ocfs2_dir_entry *dl_entry; /* Target dirent in |
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* unindexed leaf */ |
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struct buffer_head *dl_dx_root_bh; /* Root of indexed |
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* tree */ |
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struct buffer_head *dl_dx_leaf_bh; /* Indexed leaf block */ |
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struct ocfs2_dx_entry *dl_dx_entry; /* Target dx_entry in |
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* indexed leaf */ |
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struct ocfs2_dx_hinfo dl_hinfo; /* Name hash results */ |
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struct buffer_head *dl_prev_leaf_bh;/* Previous entry in |
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* dir free space |
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* list. NULL if |
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* previous entry is |
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* dx root block. */ |
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}; |
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void ocfs2_free_dir_lookup_result(struct ocfs2_dir_lookup_result *res); |
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int ocfs2_find_entry(const char *name, int namelen, |
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struct inode *dir, |
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struct ocfs2_dir_lookup_result *lookup); |
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int ocfs2_delete_entry(handle_t *handle, |
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struct inode *dir, |
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struct ocfs2_dir_lookup_result *res); |
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int __ocfs2_add_entry(handle_t *handle, |
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struct inode *dir, |
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const char *name, int namelen, |
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struct inode *inode, u64 blkno, |
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struct buffer_head *parent_fe_bh, |
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struct ocfs2_dir_lookup_result *lookup); |
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static inline int ocfs2_add_entry(handle_t *handle, |
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struct dentry *dentry, |
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struct inode *inode, u64 blkno, |
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struct buffer_head *parent_fe_bh, |
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struct ocfs2_dir_lookup_result *lookup) |
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{ |
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return __ocfs2_add_entry(handle, d_inode(dentry->d_parent), |
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dentry->d_name.name, dentry->d_name.len, |
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inode, blkno, parent_fe_bh, lookup); |
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} |
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int ocfs2_update_entry(struct inode *dir, handle_t *handle, |
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struct ocfs2_dir_lookup_result *res, |
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struct inode *new_entry_inode); |
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int ocfs2_check_dir_for_entry(struct inode *dir, |
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const char *name, |
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int namelen); |
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int ocfs2_empty_dir(struct inode *inode); |
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int ocfs2_find_files_on_disk(const char *name, |
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int namelen, |
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u64 *blkno, |
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struct inode *inode, |
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struct ocfs2_dir_lookup_result *res); |
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int ocfs2_lookup_ino_from_name(struct inode *dir, const char *name, |
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int namelen, u64 *blkno); |
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int ocfs2_readdir(struct file *file, struct dir_context *ctx); |
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int ocfs2_dir_foreach(struct inode *inode, struct dir_context *ctx); |
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int ocfs2_prepare_dir_for_insert(struct ocfs2_super *osb, |
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struct inode *dir, |
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struct buffer_head *parent_fe_bh, |
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const char *name, |
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int namelen, |
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struct ocfs2_dir_lookup_result *lookup); |
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struct ocfs2_alloc_context; |
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int ocfs2_fill_new_dir(struct ocfs2_super *osb, |
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handle_t *handle, |
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struct inode *parent, |
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struct inode *inode, |
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struct buffer_head *fe_bh, |
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struct ocfs2_alloc_context *data_ac, |
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struct ocfs2_alloc_context *meta_ac); |
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int ocfs2_dx_dir_truncate(struct inode *dir, struct buffer_head *di_bh); |
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struct ocfs2_dir_block_trailer *ocfs2_dir_trailer_from_size(int blocksize, |
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void *data); |
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#endif /* OCFS2_DIR_H */
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