2
* Copyright (c) 2011 Martin Sucha
5
* Redistribution and use in source and binary forms, with or without
6
* modification, are permitted provided that the following conditions
9
* - Redistributions of source code must retain the above copyright
10
* notice, this list of conditions and the following disclaimer.
11
* - Redistributions in binary form must reproduce the above copyright
12
* notice, this list of conditions and the following disclaimer in the
13
* documentation and/or other materials provided with the distribution.
14
* - The name of the author may not be used to endorse or promote products
15
* derived from this software without specific prior written permission.
17
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29
/** @addtogroup libext2
36
#ifndef LIBEXT2_LIBEXT2_DIRECTORY_H_
37
#define LIBEXT2_LIBEXT2_DIRECTORY_H_
40
#include "libext2_filesystem.h"
41
#include "libext2_inode.h"
44
* Linked list directory entry structure
46
typedef struct ext2_directory_entry_ll {
47
uint32_t inode; // Inode for the entry
48
uint16_t entry_length; // Distance to the next directory entry
49
uint8_t name_length; // Lower 8 bits of name length
51
uint8_t name_length_high; // Higher 8 bits of name length
52
uint8_t inode_type; // Type of referenced inode (in rev >= 0.5)
53
} __attribute__ ((packed));
54
uint8_t name; // First byte of name, if present
55
} __attribute__ ((packed)) ext2_directory_entry_ll_t;
57
typedef struct ext2_directory_iterator {
58
ext2_filesystem_t *fs;
59
ext2_inode_ref_t *inode_ref;
60
block_t *current_block;
61
aoff64_t current_offset;
62
ext2_directory_entry_ll_t *current;
63
} ext2_directory_iterator_t;
66
extern uint32_t ext2_directory_entry_ll_get_inode(ext2_directory_entry_ll_t *);
67
extern uint16_t ext2_directory_entry_ll_get_entry_length(
68
ext2_directory_entry_ll_t *);
69
extern uint16_t ext2_directory_entry_ll_get_name_length(
70
ext2_superblock_t *, ext2_directory_entry_ll_t *);
72
extern int ext2_directory_iterator_init(ext2_directory_iterator_t *,
73
ext2_filesystem_t *, ext2_inode_ref_t *);
74
extern int ext2_directory_iterator_next(ext2_directory_iterator_t *);
75
extern int ext2_directory_iterator_fini(ext2_directory_iterator_t *);