102 lines
3.3 KiB
C
102 lines
3.3 KiB
C
/*-
|
|
* Copyright (c) 2009 Aditya Sarawgi
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _FS_EXT2FS_EXT2_DIR_H_
|
|
#define _FS_EXT2FS_EXT2_DIR_H_
|
|
|
|
/*
|
|
* Structure of a directory entry
|
|
*/
|
|
#define EXT2FS_MAXNAMLEN 255
|
|
|
|
struct ext2fs_direct {
|
|
uint32_t e2d_ino; /* inode number of entry */
|
|
uint16_t e2d_reclen; /* length of this record */
|
|
uint16_t e2d_namlen; /* length of string in e2d_name */
|
|
char e2d_name[EXT2FS_MAXNAMLEN];/* name with length<=EXT2FS_MAXNAMLEN */
|
|
};
|
|
|
|
enum slotstatus {
|
|
NONE,
|
|
COMPACT,
|
|
FOUND
|
|
};
|
|
|
|
struct ext2fs_searchslot {
|
|
enum slotstatus slotstatus;
|
|
doff_t slotoffset; /* offset of area with free space */
|
|
int slotsize; /* size of area at slotoffset */
|
|
int slotfreespace; /* amount of space free in slot */
|
|
int slotneeded; /* sizeof the entry we are seeking */
|
|
};
|
|
|
|
/*
|
|
* The new version of the directory entry. Since EXT2 structures are
|
|
* stored in intel byte order, and the name_len field could never be
|
|
* bigger than 255 chars, it's safe to reclaim the extra byte for the
|
|
* file_type field.
|
|
*/
|
|
struct ext2fs_direct_2 {
|
|
uint32_t e2d_ino; /* inode number of entry */
|
|
uint16_t e2d_reclen; /* length of this record */
|
|
uint8_t e2d_namlen; /* length of string in e2d_name */
|
|
uint8_t e2d_type; /* file type */
|
|
char e2d_name[EXT2FS_MAXNAMLEN];/* name with length<=EXT2FS_MAXNAMLEN */
|
|
};
|
|
|
|
/*
|
|
* Maximal count of links to a file
|
|
*/
|
|
#define EXT2_LINK_MAX 32000
|
|
|
|
/*
|
|
* Ext2 directory file types. Only the low 3 bits are used. The
|
|
* other bits are reserved for now.
|
|
*/
|
|
#define EXT2_FT_UNKNOWN 0
|
|
#define EXT2_FT_REG_FILE 1
|
|
#define EXT2_FT_DIR 2
|
|
#define EXT2_FT_CHRDEV 3
|
|
#define EXT2_FT_BLKDEV 4
|
|
#define EXT2_FT_FIFO 5
|
|
#define EXT2_FT_SOCK 6
|
|
#define EXT2_FT_SYMLINK 7
|
|
#define EXT2_FT_MAX 8
|
|
|
|
/*
|
|
* EXT2_DIR_PAD defines the directory entries boundaries
|
|
*
|
|
* NOTE: It must be a multiple of 4
|
|
*/
|
|
#define EXT2_DIR_PAD 4
|
|
#define EXT2_DIR_ROUND (EXT2_DIR_PAD - 1)
|
|
#define EXT2_DIR_REC_LEN(name_len) (((name_len) + 8 + EXT2_DIR_ROUND) & \
|
|
~EXT2_DIR_ROUND)
|
|
#endif /* !_FS_EXT2FS_EXT2_DIR_H_ */
|
|
|