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/*
File: hfsp_struct.h, TestDisk
Copyright (C) 2005-2006 Christophe GRENIER <grenier@cgsecurity.org>
Original header comes from libhfs - library for reading and writing
Macintosh HFS volumes
Copyright (C) 2000 Klaus Halfmann <klaus.halfmann@feri.de>
Original work by 1996-1998 Robert Leslie <rob@mars.org>
other work 2000 from Brad Boyer (flar@pants.nu)
This software is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write the Free Software Foundation, Inc., 51
Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef _HFSP_STRUCT_H
#define _HFSP_STRUCT_H
#ifdef __cplusplus
extern "C" {
#endif
#define HFSP_BOOT_SECTOR_SIZE 512
#define HFSP_BLOCKSZ 512 /* A sector for Apple is always 512 bytes */
#define HFSP_BLOCKSZ_BITS 9 /* 1<<9 == 512 */
#define HFSP_VOLHEAD_SIG 0x482B /* 'H+' */
#define HFSX_VOLHEAD_SIG 0x4858 /* 'HX' */
#define HFSP_VERSION 4
#define HFSX_VERSION 5
// Minimum Key size for all btrees
#define HFSP_CAT_KEY_MIN_LEN 6
// Maximum Key size for all btrees
#define HFSP_CAT_KEY_MAX_LEN 516
/* HFS+ includes POSIX permissions , although marked as reserved they will be
* used as such. Is ignored by MacOS 8-9 but probably not by MacOS X.
*/
typedef struct {
uint32_t owner;
uint32_t group;
uint32_t mode;
uint32_t dev;
} hfsp_perm;
/* A single contiguous area (fragment) of a file */
typedef struct {
uint32_t start_block;
uint32_t block_count;
} hfsp_extent;
/* A file may contain up to 8 normale extents, all other
are found in some extra extent area */
typedef hfsp_extent hfsp_extent_rec[8];
/* Information for a "Fork" in a file
* Forks are the "usual" DATA and RSRC forks or special files
* (e.g. the Volume Bitmap)
*/
typedef struct {
uint64_t total_size; // logical size
uint32_t clump_size; // number of bytes to preallocate
uint32_t total_blocks;
hfsp_extent_rec extents; // initial (8) extents
} hfsp_fork_raw;
/* HFS+ Volume Header
* Always found at block 2 of the disk, a copy is stored
* at the second to last block of the disk.
*/
typedef struct hfsp_vh {
uint16_t signature; // 00: must be HFSPLUS_VOLHEAD_SIG 'H+'
uint16_t version; // 02: 4 for HFS+, 5 for HFSX
uint32_t attributes; // 04: See bit constants below
uint32_t last_mount_vers; // 08
// Use a registered creator code here (See libhfsp.h)
// Mac OS uses '8.10' well
uint32_t reserved; // 0C
uint32_t create_date; // 10 local time !
uint32_t modify_date; // 14 GMT (?)
uint32_t backup_date; // 18 GMT (?)
uint32_t checked_date; // 1C GMT (?) fsck ?
uint32_t file_count; // 20
// not including special files but including DATA and RSRC forks
uint32_t folder_count; // 24 excluding the root folder
uint32_t blocksize; // 28
// must be multiple of HFSPLUS_SECTOR_SIZE,
// should be a multiple of 4k for hard disk
uint32_t total_blocks; // 2C
uint32_t free_blocks; // 30
// The total number of unused allocation blocks on the disk.
uint32_t next_alloc;
// hint where to search for next allocation blocks
uint32_t rsrc_clump_sz;
// default clump size for rsrc forks
uint32_t data_clump_sz;
// default clump size for data forks
uint32_t next_cnid;
// next unused catalog id
uint32_t write_count;
// increment on every mount (and write ?)
uint64_t encodings_bmp;
// for every encoding used on the disk a bit is set
// ignored but eventually must be cared for
char finder_info[32];
hfsp_fork_raw alloc_file;
// stores bitmap of use/free blocks
hfsp_fork_raw ext_file;
// stores oferflow extents
hfsp_fork_raw cat_file;
// This contains the root directory
hfsp_fork_raw attr_file;
hfsp_fork_raw start_file;
// a special startup file may be described here (used by ?)
} hfsp_vh;
/* HFS+ volume attributes */
/* 0-6 reserved, may be used in memory only */
#define HFSPLUS_VOL_RESERVED1 0x000000FF
#define HFSPLUS_VOL_HARDLOCK 0x00000080 // Used in Memory by finder only
#define HFSPLUS_VOL_UNMNT 0x00000100
// clear this bit when mounting, set as last step of unmounting
// This is checked by (slower) ROM code
#define HFSPLUS_VOL_SPARE_BLK 0x00000200
#define HFSPLUS_VOL_NOCACHE 0x00000400
// in case of RAM or ROM disk (try a HFS+ Ramdisk :)
#define HFSPLUS_VOL_INCNSTNT 0x00000800
// Reverse meaning as of HFSPLUS_VOL_UNMNT
// This is checked by (faster) Mac OS code
/* 12-14 reserved */
#define HFSPLUS_VOL_RESERVED2 0x00007000
#define HFSPLUS_VOL_SOFTLOCK 0x00008000
#define HFSPLUS_VOL_RESERVED3 0xFFFF0000
#ifdef __cplusplus
} /* closing brace for extern "C" */
#endif
#endif
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