1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
2 | /* |
3 | * dir.h |
4 | * |
5 | * Function prototypes |
6 | * |
7 | * Copyright (C) 2002, 2004 Oracle. All rights reserved. |
8 | */ |
9 | |
10 | #ifndef OCFS2_DIR_H |
11 | #define OCFS2_DIR_H |
12 | |
13 | struct ocfs2_dx_hinfo { |
14 | u32 major_hash; |
15 | u32 minor_hash; |
16 | }; |
17 | |
18 | struct ocfs2_dir_lookup_result { |
19 | struct buffer_head *dl_leaf_bh; /* Unindexed leaf |
20 | * block */ |
21 | struct ocfs2_dir_entry *dl_entry; /* Target dirent in |
22 | * unindexed leaf */ |
23 | |
24 | struct buffer_head *dl_dx_root_bh; /* Root of indexed |
25 | * tree */ |
26 | |
27 | struct buffer_head *dl_dx_leaf_bh; /* Indexed leaf block */ |
28 | struct ocfs2_dx_entry *dl_dx_entry; /* Target dx_entry in |
29 | * indexed leaf */ |
30 | struct ocfs2_dx_hinfo dl_hinfo; /* Name hash results */ |
31 | |
32 | struct buffer_head *dl_prev_leaf_bh;/* Previous entry in |
33 | * dir free space |
34 | * list. NULL if |
35 | * previous entry is |
36 | * dx root block. */ |
37 | }; |
38 | |
39 | void ocfs2_free_dir_lookup_result(struct ocfs2_dir_lookup_result *res); |
40 | |
41 | int ocfs2_find_entry(const char *name, int namelen, |
42 | struct inode *dir, |
43 | struct ocfs2_dir_lookup_result *lookup); |
44 | int ocfs2_delete_entry(handle_t *handle, |
45 | struct inode *dir, |
46 | struct ocfs2_dir_lookup_result *res); |
47 | int __ocfs2_add_entry(handle_t *handle, |
48 | struct inode *dir, |
49 | const char *name, int namelen, |
50 | struct inode *inode, u64 blkno, |
51 | struct buffer_head *parent_fe_bh, |
52 | struct ocfs2_dir_lookup_result *lookup); |
53 | static inline int ocfs2_add_entry(handle_t *handle, |
54 | struct dentry *dentry, |
55 | struct inode *inode, u64 blkno, |
56 | struct buffer_head *parent_fe_bh, |
57 | struct ocfs2_dir_lookup_result *lookup) |
58 | { |
59 | return __ocfs2_add_entry(handle, dir: d_inode(dentry: dentry->d_parent), |
60 | name: dentry->d_name.name, namelen: dentry->d_name.len, |
61 | inode, blkno, parent_fe_bh, lookup); |
62 | } |
63 | int ocfs2_update_entry(struct inode *dir, handle_t *handle, |
64 | struct ocfs2_dir_lookup_result *res, |
65 | struct inode *new_entry_inode); |
66 | |
67 | int ocfs2_check_dir_for_entry(struct inode *dir, |
68 | const char *name, |
69 | int namelen); |
70 | int ocfs2_empty_dir(struct inode *inode); |
71 | |
72 | int ocfs2_find_files_on_disk(const char *name, |
73 | int namelen, |
74 | u64 *blkno, |
75 | struct inode *inode, |
76 | struct ocfs2_dir_lookup_result *res); |
77 | int ocfs2_lookup_ino_from_name(struct inode *dir, const char *name, |
78 | int namelen, u64 *blkno); |
79 | int ocfs2_readdir(struct file *file, struct dir_context *ctx); |
80 | int ocfs2_dir_foreach(struct inode *inode, struct dir_context *ctx); |
81 | int ocfs2_prepare_dir_for_insert(struct ocfs2_super *osb, |
82 | struct inode *dir, |
83 | struct buffer_head *parent_fe_bh, |
84 | const char *name, |
85 | int namelen, |
86 | struct ocfs2_dir_lookup_result *lookup); |
87 | struct ocfs2_alloc_context; |
88 | int ocfs2_fill_new_dir(struct ocfs2_super *osb, |
89 | handle_t *handle, |
90 | struct inode *parent, |
91 | struct inode *inode, |
92 | struct buffer_head *fe_bh, |
93 | struct ocfs2_alloc_context *data_ac, |
94 | struct ocfs2_alloc_context *meta_ac); |
95 | |
96 | int ocfs2_dx_dir_truncate(struct inode *dir, struct buffer_head *di_bh); |
97 | |
98 | struct ocfs2_dir_block_trailer *ocfs2_dir_trailer_from_size(int blocksize, |
99 | void *data); |
100 | #endif /* OCFS2_DIR_H */ |
101 | |