2 * Copyright (c) 2013 Grzegorz Kostka (kostka.grzegorz@gmail.com)
6 * Copyright (c) 2012 Martin Sucha
7 * Copyright (c) 2012 Frantisek Princ
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
14 * - Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * - Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * - The name of the author may not be used to endorse or promote products
20 * derived from this software without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34 /** @addtogroup lwext4
38 * @file ext4_dir_idx.h
39 * @brief Directory indexing procedures.
42 #ifndef EXT4_DIR_IDX_H_
43 #define EXT4_DIR_IDX_H_
49 #include "ext4_config.h"
50 #include "ext4_types.h"
58 #define EXT4_DIR_DX_INIT_BCNT 2
60 /**@brief Initialize index structure of new directory.
61 * @param dir Pointer to directory i-node
62 * @param dir Pointer to parent directory i-node
65 int ext4_dir_dx_init(struct ext4_inode_ref *dir,
66 struct ext4_inode_ref *parent);
68 /**@brief Try to find directory entry using directory index.
69 * @param result Output value - if entry will be found,
70 * than will be passed through this parameter
71 * @param inode_ref Directory i-node
72 * @param name_len Length of name to be found
73 * @param name Name to be found
76 int ext4_dir_dx_find_entry(struct ext4_dir_search_result *result,
77 struct ext4_inode_ref *inode_ref, size_t name_len,
80 /**@brief Add new entry to indexed directory
81 * @param parent Directory i-node
82 * @param child I-node to be referenced from directory entry
83 * @param name Name of new directory entry
86 int ext4_dir_dx_add_entry(struct ext4_inode_ref *parent,
87 struct ext4_inode_ref *child, const char *name);
89 /**@brief Add new entry to indexed directory
90 * @param dir Directory i-node
91 * @param parent_inode parent inode index
94 int ext4_dir_dx_reset_parent_inode(struct ext4_inode_ref *dir,
95 uint32_t parent_inode);
101 #endif /* EXT4_DIR_IDX_H_ */