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ccd979bd MF |
1 | /* -*- mode: c; c-basic-offset: 8; -*- |
2 | * vim: noexpandtab sw=8 ts=8 sts=0: | |
3 | * | |
4 | * dir.h | |
5 | * | |
6 | * Function prototypes | |
7 | * | |
8 | * Copyright (C) 2002, 2004 Oracle. All rights reserved. | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or | |
11 | * modify it under the terms of the GNU General Public | |
12 | * License as published by the Free Software Foundation; either | |
13 | * version 2 of the License, or (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | * General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public | |
21 | * License along with this program; if not, write to the | |
22 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
23 | * Boston, MA 021110-1307, USA. | |
24 | */ | |
25 | ||
26 | #ifndef OCFS2_DIR_H | |
27 | #define OCFS2_DIR_H | |
28 | ||
9b7895ef MF |
29 | struct ocfs2_dx_hinfo { |
30 | u32 major_hash; | |
31 | u32 minor_hash; | |
32 | }; | |
33 | ||
4a12ca3a | 34 | struct ocfs2_dir_lookup_result { |
9b7895ef MF |
35 | struct buffer_head *dl_leaf_bh; /* Unindexed leaf |
36 | * block */ | |
37 | struct ocfs2_dir_entry *dl_entry; /* Target dirent in | |
38 | * unindexed leaf */ | |
39 | ||
40 | struct buffer_head *dl_dx_leaf_bh; /* Indexed leaf block */ | |
41 | struct ocfs2_dx_entry *dl_dx_entry; /* Target dx_entry in | |
42 | * indexed leaf */ | |
43 | struct ocfs2_dx_hinfo dl_hinfo; /* Name hash results */ | |
4a12ca3a MF |
44 | }; |
45 | void ocfs2_free_dir_lookup_result(struct ocfs2_dir_lookup_result *res); | |
46 | ||
47 | int ocfs2_find_entry(const char *name, int namelen, | |
48 | struct inode *dir, | |
49 | struct ocfs2_dir_lookup_result *lookup); | |
316f4b9f MF |
50 | int ocfs2_delete_entry(handle_t *handle, |
51 | struct inode *dir, | |
4a12ca3a | 52 | struct ocfs2_dir_lookup_result *res); |
316f4b9f MF |
53 | int __ocfs2_add_entry(handle_t *handle, |
54 | struct inode *dir, | |
55 | const char *name, int namelen, | |
56 | struct inode *inode, u64 blkno, | |
57 | struct buffer_head *parent_fe_bh, | |
4a12ca3a | 58 | struct ocfs2_dir_lookup_result *lookup); |
316f4b9f MF |
59 | static inline int ocfs2_add_entry(handle_t *handle, |
60 | struct dentry *dentry, | |
61 | struct inode *inode, u64 blkno, | |
62 | struct buffer_head *parent_fe_bh, | |
4a12ca3a | 63 | struct ocfs2_dir_lookup_result *lookup) |
316f4b9f MF |
64 | { |
65 | return __ocfs2_add_entry(handle, dentry->d_parent->d_inode, | |
66 | dentry->d_name.name, dentry->d_name.len, | |
4a12ca3a | 67 | inode, blkno, parent_fe_bh, lookup); |
316f4b9f | 68 | } |
38760e24 | 69 | int ocfs2_update_entry(struct inode *dir, handle_t *handle, |
4a12ca3a | 70 | struct ocfs2_dir_lookup_result *res, |
38760e24 | 71 | struct inode *new_entry_inode); |
316f4b9f | 72 | |
ccd979bd MF |
73 | int ocfs2_check_dir_for_entry(struct inode *dir, |
74 | const char *name, | |
75 | int namelen); | |
0bfbbf62 | 76 | int ocfs2_empty_dir(struct inode *inode); |
4a12ca3a | 77 | |
ccd979bd MF |
78 | int ocfs2_find_files_on_disk(const char *name, |
79 | int namelen, | |
80 | u64 *blkno, | |
81 | struct inode *inode, | |
4a12ca3a | 82 | struct ocfs2_dir_lookup_result *res); |
be94d117 MF |
83 | int ocfs2_lookup_ino_from_name(struct inode *dir, const char *name, |
84 | int namelen, u64 *blkno); | |
ccd979bd | 85 | int ocfs2_readdir(struct file *filp, void *dirent, filldir_t filldir); |
5eae5b96 MF |
86 | int ocfs2_dir_foreach(struct inode *inode, loff_t *f_pos, void *priv, |
87 | filldir_t filldir); | |
ccd979bd MF |
88 | int ocfs2_prepare_dir_for_insert(struct ocfs2_super *osb, |
89 | struct inode *dir, | |
90 | struct buffer_head *parent_fe_bh, | |
91 | const char *name, | |
92 | int namelen, | |
4a12ca3a | 93 | struct ocfs2_dir_lookup_result *lookup); |
ccd979bd | 94 | struct ocfs2_alloc_context; |
316f4b9f MF |
95 | int ocfs2_fill_new_dir(struct ocfs2_super *osb, |
96 | handle_t *handle, | |
97 | struct inode *parent, | |
98 | struct inode *inode, | |
99 | struct buffer_head *fe_bh, | |
9b7895ef MF |
100 | struct ocfs2_alloc_context *data_ac, |
101 | struct ocfs2_alloc_context *meta_ac); | |
102 | ||
103 | int ocfs2_dx_dir_truncate(struct inode *dir, struct buffer_head *di_bh); | |
316f4b9f | 104 | |
c175a518 JB |
105 | struct ocfs2_dir_block_trailer *ocfs2_dir_trailer_from_size(int blocksize, |
106 | void *data); | |
ccd979bd | 107 | #endif /* OCFS2_DIR_H */ |