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Mark Fashehccd979b2005-12-15 14:31:24 -08001/* -*- 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
Mark Fasheh9b7895e2008-11-12 16:27:44 -080029struct ocfs2_dx_hinfo {
30 u32 major_hash;
31 u32 minor_hash;
32};
33
Mark Fasheh4a12ca32008-11-12 15:43:34 -080034struct ocfs2_dir_lookup_result {
Mark Fasheh9b7895e2008-11-12 16:27:44 -080035 struct buffer_head *dl_leaf_bh; /* Unindexed leaf
36 * block */
37 struct ocfs2_dir_entry *dl_entry; /* Target dirent in
38 * unindexed leaf */
39
Mark Fasheh4ed8a6b2008-11-24 17:02:08 -080040 struct buffer_head *dl_dx_root_bh; /* Root of indexed
41 * tree */
Mark Fashehe7c17e42009-01-29 18:17:46 -080042
Mark Fasheh9b7895e2008-11-12 16:27:44 -080043 struct buffer_head *dl_dx_leaf_bh; /* Indexed leaf block */
44 struct ocfs2_dx_entry *dl_dx_entry; /* Target dx_entry in
45 * indexed leaf */
46 struct ocfs2_dx_hinfo dl_hinfo; /* Name hash results */
Mark Fashehe7c17e42009-01-29 18:17:46 -080047
48 struct buffer_head *dl_prev_leaf_bh;/* Previous entry in
49 * dir free space
50 * list. NULL if
51 * previous entry is
52 * dx root block. */
Mark Fasheh4a12ca32008-11-12 15:43:34 -080053};
Mark Fashehe7c17e42009-01-29 18:17:46 -080054
Mark Fasheh4a12ca32008-11-12 15:43:34 -080055void ocfs2_free_dir_lookup_result(struct ocfs2_dir_lookup_result *res);
56
57int ocfs2_find_entry(const char *name, int namelen,
58 struct inode *dir,
59 struct ocfs2_dir_lookup_result *lookup);
Mark Fasheh316f4b92007-09-07 18:21:26 -070060int ocfs2_delete_entry(handle_t *handle,
61 struct inode *dir,
Mark Fasheh4a12ca32008-11-12 15:43:34 -080062 struct ocfs2_dir_lookup_result *res);
Mark Fasheh316f4b92007-09-07 18:21:26 -070063int __ocfs2_add_entry(handle_t *handle,
64 struct inode *dir,
65 const char *name, int namelen,
66 struct inode *inode, u64 blkno,
67 struct buffer_head *parent_fe_bh,
Mark Fasheh4a12ca32008-11-12 15:43:34 -080068 struct ocfs2_dir_lookup_result *lookup);
Mark Fasheh316f4b92007-09-07 18:21:26 -070069static inline int ocfs2_add_entry(handle_t *handle,
70 struct dentry *dentry,
71 struct inode *inode, u64 blkno,
72 struct buffer_head *parent_fe_bh,
Mark Fasheh4a12ca32008-11-12 15:43:34 -080073 struct ocfs2_dir_lookup_result *lookup)
Mark Fasheh316f4b92007-09-07 18:21:26 -070074{
75 return __ocfs2_add_entry(handle, dentry->d_parent->d_inode,
76 dentry->d_name.name, dentry->d_name.len,
Mark Fasheh4a12ca32008-11-12 15:43:34 -080077 inode, blkno, parent_fe_bh, lookup);
Mark Fasheh316f4b92007-09-07 18:21:26 -070078}
Mark Fasheh38760e22007-09-11 17:21:56 -070079int ocfs2_update_entry(struct inode *dir, handle_t *handle,
Mark Fasheh4a12ca32008-11-12 15:43:34 -080080 struct ocfs2_dir_lookup_result *res,
Mark Fasheh38760e22007-09-11 17:21:56 -070081 struct inode *new_entry_inode);
Mark Fasheh316f4b92007-09-07 18:21:26 -070082
Mark Fashehccd979b2005-12-15 14:31:24 -080083int ocfs2_check_dir_for_entry(struct inode *dir,
84 const char *name,
85 int namelen);
Mark Fasheh0bfbbf62007-09-12 11:19:00 -070086int ocfs2_empty_dir(struct inode *inode);
Mark Fasheh4a12ca32008-11-12 15:43:34 -080087
Mark Fashehccd979b2005-12-15 14:31:24 -080088int ocfs2_find_files_on_disk(const char *name,
89 int namelen,
90 u64 *blkno,
91 struct inode *inode,
Mark Fasheh4a12ca32008-11-12 15:43:34 -080092 struct ocfs2_dir_lookup_result *res);
Mark Fashehbe94d112007-09-11 15:22:06 -070093int ocfs2_lookup_ino_from_name(struct inode *dir, const char *name,
94 int namelen, u64 *blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -080095int ocfs2_readdir(struct file *filp, void *dirent, filldir_t filldir);
Mark Fasheh5eae5b92007-09-10 17:50:51 -070096int ocfs2_dir_foreach(struct inode *inode, loff_t *f_pos, void *priv,
97 filldir_t filldir);
Mark Fashehccd979b2005-12-15 14:31:24 -080098int ocfs2_prepare_dir_for_insert(struct ocfs2_super *osb,
99 struct inode *dir,
100 struct buffer_head *parent_fe_bh,
101 const char *name,
102 int namelen,
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800103 struct ocfs2_dir_lookup_result *lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -0800104struct ocfs2_alloc_context;
Mark Fasheh316f4b92007-09-07 18:21:26 -0700105int ocfs2_fill_new_dir(struct ocfs2_super *osb,
106 handle_t *handle,
107 struct inode *parent,
108 struct inode *inode,
109 struct buffer_head *fe_bh,
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800110 struct ocfs2_alloc_context *data_ac,
111 struct ocfs2_alloc_context *meta_ac);
112
113int ocfs2_dx_dir_truncate(struct inode *dir, struct buffer_head *di_bh);
Mark Fasheh316f4b92007-09-07 18:21:26 -0700114
Joel Beckerc175a512008-12-10 17:58:22 -0800115struct ocfs2_dir_block_trailer *ocfs2_dir_trailer_from_size(int blocksize,
116 void *data);
Mark Fashehccd979b2005-12-15 14:31:24 -0800117#endif /* OCFS2_DIR_H */