[net-next-2.6.git] / fs / hfsplus / hfsplus_raw.h

/*
 *  linux/include/linux/hfsplus_raw.h
 *
 * Copyright (C) 1999
 * Brad Boyer (flar@pants.nu)
 * (C) 2003 Ardis Technologies <roman@ardistech.com>
 *
 * Format of structures on disk
 * Information taken from Apple Technote #1150 (HFS Plus Volume Format)
 *
 */

#ifndef _LINUX_HFSPLUS_RAW_H
#define _LINUX_HFSPLUS_RAW_H

#include <linux/types.h>

/* Some constants */
#define HFSPLUS_SECTOR_SIZE        512
#define HFSPLUS_SECTOR_SHIFT         9
#define HFSPLUS_VOLHEAD_SECTOR       2
#define HFSPLUS_VOLHEAD_SIG     0x482b
#define HFSPLUS_VOLHEAD_SIGX    0x4858
#define HFSPLUS_SUPER_MAGIC     0x482b
#define HFSPLUS_MIN_VERSION          4
#define HFSPLUS_CURRENT_VERSION      5

#define HFSP_WRAP_MAGIC         0x4244
#define HFSP_WRAP_ATTRIB_SLOCK  0x8000
#define HFSP_WRAP_ATTRIB_SPARED 0x0200

#define HFSP_WRAPOFF_SIG          0x00
#define HFSP_WRAPOFF_ATTRIB       0x0A
#define HFSP_WRAPOFF_ABLKSIZE     0x14
#define HFSP_WRAPOFF_ABLKSTART    0x1C
#define HFSP_WRAPOFF_EMBEDSIG     0x7C
#define HFSP_WRAPOFF_EMBEDEXT     0x7E

#define HFSP_HIDDENDIR_NAME	"\xe2\x90\x80\xe2\x90\x80\xe2\x90\x80\xe2\x90\x80HFS+ Private Data"

#define HFSP_HARDLINK_TYPE	0x686c6e6b	/* 'hlnk' */
#define HFSP_HFSPLUS_CREATOR	0x6866732b	/* 'hfs+' */

#define HFSP_SYMLINK_TYPE	0x736c6e6b	/* 'slnk' */
#define HFSP_SYMLINK_CREATOR	0x72686170	/* 'rhap' */

#define HFSP_MOUNT_VERSION	0x482b4c78	/* 'H+Lx' */

/* Structures used on disk */

typedef __be32 hfsplus_cnid;
typedef __be16 hfsplus_unichr;

/* A "string" as used in filenames, etc. */
struct hfsplus_unistr {
	__be16 length;
	hfsplus_unichr unicode[255];
} __packed;

#define HFSPLUS_MAX_STRLEN 255

/* POSIX permissions */
struct hfsplus_perm {
	__be32 owner;
	__be32 group;
	u8  rootflags;
	u8  userflags;
	__be16 mode;
	__be32 dev;
} __packed;

#define HFSPLUS_FLG_NODUMP	0x01
#define HFSPLUS_FLG_IMMUTABLE	0x02
#define HFSPLUS_FLG_APPEND	0x04

/* A single contiguous area of a file */
struct hfsplus_extent {
	__be32 start_block;
	__be32 block_count;
} __packed;
typedef struct hfsplus_extent hfsplus_extent_rec[8];

/* Information for a "Fork" in a file */
struct hfsplus_fork_raw {
	__be64 total_size;
	__be32 clump_size;
	__be32 total_blocks;
	hfsplus_extent_rec extents;
} __packed;

/* HFS+ Volume Header */
struct hfsplus_vh {
	__be16 signature;
	__be16 version;
	__be32 attributes;
	__be32 last_mount_vers;
	u32 reserved;

	__be32 create_date;
	__be32 modify_date;
	__be32 backup_date;
	__be32 checked_date;

	__be32 file_count;
	__be32 folder_count;

	__be32 blocksize;
	__be32 total_blocks;
	__be32 free_blocks;

	__be32 next_alloc;
	__be32 rsrc_clump_sz;
	__be32 data_clump_sz;
	hfsplus_cnid next_cnid;

	__be32 write_count;
	__be64 encodings_bmp;

	u8 finder_info[32];

	struct hfsplus_fork_raw alloc_file;
	struct hfsplus_fork_raw ext_file;
	struct hfsplus_fork_raw cat_file;
	struct hfsplus_fork_raw attr_file;
	struct hfsplus_fork_raw start_file;
} __packed;

/* HFS+ volume attributes */
#define HFSPLUS_VOL_UNMNT		(1 << 8)
#define HFSPLUS_VOL_SPARE_BLK		(1 << 9)
#define HFSPLUS_VOL_NOCACHE		(1 << 10)
#define HFSPLUS_VOL_INCNSTNT		(1 << 11)
#define HFSPLUS_VOL_NODEID_REUSED	(1 << 12)
#define HFSPLUS_VOL_JOURNALED		(1 << 13)
#define HFSPLUS_VOL_SOFTLOCK		(1 << 15)

/* HFS+ BTree node descriptor */
struct hfs_bnode_desc {
	__be32 next;
	__be32 prev;
	s8 type;
	u8 height;
	__be16 num_recs;
	u16 reserved;
} __packed;

/* HFS+ BTree node types */
#define HFS_NODE_INDEX	0x00
#define HFS_NODE_HEADER	0x01
#define HFS_NODE_MAP	0x02
#define HFS_NODE_LEAF	0xFF

/* HFS+ BTree header */
struct hfs_btree_header_rec {
	__be16 depth;
	__be32 root;
	__be32 leaf_count;
	__be32 leaf_head;
	__be32 leaf_tail;
	__be16 node_size;
	__be16 max_key_len;
	__be32 node_count;
	__be32 free_nodes;
	u16 reserved1;
	__be32 clump_size;
	u8 btree_type;
	u8 key_type;
	__be32 attributes;
	u32 reserved3[16];
} __packed;

/* BTree attributes */
#define HFS_TREE_BIGKEYS	2
#define HFS_TREE_VARIDXKEYS	4

/* HFS+ BTree misc info */
#define HFSPLUS_TREE_HEAD 0
#define HFSPLUS_NODE_MXSZ 32768

/* Some special File ID numbers (stolen from hfs.h) */
#define HFSPLUS_POR_CNID		1	/* Parent Of the Root */
#define HFSPLUS_ROOT_CNID		2	/* ROOT directory */
#define HFSPLUS_EXT_CNID		3	/* EXTents B-tree */
#define HFSPLUS_CAT_CNID		4	/* CATalog B-tree */
#define HFSPLUS_BAD_CNID		5	/* BAD blocks file */
#define HFSPLUS_ALLOC_CNID		6	/* ALLOCation file */
#define HFSPLUS_START_CNID		7	/* STARTup file */
#define HFSPLUS_ATTR_CNID		8	/* ATTRibutes file */
#define HFSPLUS_EXCH_CNID		15	/* ExchangeFiles temp id */
#define HFSPLUS_FIRSTUSER_CNID		16	/* first available user id */

/* btree key type */
#define HFSPLUS_KEY_CASEFOLDING		0xCF	/* case-insensitive */
#define HFSPLUS_KEY_BINARY		0xBC	/* case-sensitive */

/* HFS+ catalog entry key */
struct hfsplus_cat_key {
	__be16 key_len;
	hfsplus_cnid parent;
	struct hfsplus_unistr name;
} __packed;


/* Structs from hfs.h */
struct hfsp_point {
	__be16 v;
	__be16 h;
} __packed;

struct hfsp_rect {
	__be16 top;
	__be16 left;
	__be16 bottom;
	__be16 right;
} __packed;


/* HFS directory info (stolen from hfs.h */
struct DInfo {
	struct hfsp_rect frRect;
	__be16 frFlags;
	struct hfsp_point frLocation;
	__be16 frView;
} __packed;

struct DXInfo {
	struct hfsp_point frScroll;
	__be32 frOpenChain;
	__be16 frUnused;
	__be16 frComment;
	__be32 frPutAway;
} __packed;

/* HFS+ folder data (part of an hfsplus_cat_entry) */
struct hfsplus_cat_folder {
	__be16 type;
	__be16 flags;
	__be32 valence;
	hfsplus_cnid id;
	__be32 create_date;
	__be32 content_mod_date;
	__be32 attribute_mod_date;
	__be32 access_date;
	__be32 backup_date;
	struct hfsplus_perm permissions;
	struct DInfo user_info;
	struct DXInfo finder_info;
	__be32 text_encoding;
	u32 reserved;
} __packed;

/* HFS file info (stolen from hfs.h) */
struct FInfo {
	__be32 fdType;
	__be32 fdCreator;
	__be16 fdFlags;
	struct hfsp_point fdLocation;
	__be16 fdFldr;
} __packed;

struct FXInfo {
	__be16 fdIconID;
	u8 fdUnused[8];
	__be16 fdComment;
	__be32 fdPutAway;
} __packed;

/* HFS+ file data (part of a cat_entry) */
struct hfsplus_cat_file {
	__be16 type;
	__be16 flags;
	u32 reserved1;
	hfsplus_cnid id;
	__be32 create_date;
	__be32 content_mod_date;
	__be32 attribute_mod_date;
	__be32 access_date;
	__be32 backup_date;
	struct hfsplus_perm permissions;
	struct FInfo user_info;
	struct FXInfo finder_info;
	__be32 text_encoding;
	u32 reserved2;

	struct hfsplus_fork_raw data_fork;
	struct hfsplus_fork_raw rsrc_fork;
} __packed;

/* File attribute bits */
#define HFSPLUS_FILE_LOCKED		0x0001
#define HFSPLUS_FILE_THREAD_EXISTS	0x0002

/* HFS+ catalog thread (part of a cat_entry) */
struct hfsplus_cat_thread {
	__be16 type;
	s16 reserved;
	hfsplus_cnid parentID;
	struct hfsplus_unistr nodeName;
} __packed;

#define HFSPLUS_MIN_THREAD_SZ 10

/* A data record in the catalog tree */
typedef union {
	__be16 type;
	struct hfsplus_cat_folder folder;
	struct hfsplus_cat_file file;
	struct hfsplus_cat_thread thread;
} __packed hfsplus_cat_entry;

/* HFS+ catalog entry type */
#define HFSPLUS_FOLDER         0x0001
#define HFSPLUS_FILE           0x0002
#define HFSPLUS_FOLDER_THREAD  0x0003
#define HFSPLUS_FILE_THREAD    0x0004

/* HFS+ extents tree key */
struct hfsplus_ext_key {
	__be16 key_len;
	u8 fork_type;
	u8 pad;
	hfsplus_cnid cnid;
	__be32 start_block;
} __packed;

#define HFSPLUS_EXT_KEYLEN 12

/* HFS+ generic BTree key */
typedef union {
	__be16 key_len;
	struct hfsplus_cat_key cat;
	struct hfsplus_ext_key ext;
} __packed hfsplus_btree_key;

#endif
Commit	Line	Data
1da177e4 LT	1	/*
	2	* linux/include/linux/hfsplus_raw.h
	3	*
	4	* Copyright (C) 1999
	5	* Brad Boyer (flar@pants.nu)
	6	* (C) 2003 Ardis Technologies <roman@ardistech.com>
	7	*
	8	* Format of structures on disk
	9	* Information taken from Apple Technote #1150 (HFS Plus Volume Format)
	10	*
	11	*/
	12
	13	#ifndef _LINUX_HFSPLUS_RAW_H
	14	#define _LINUX_HFSPLUS_RAW_H
	15
	16	#include <linux/types.h>
	17
1da177e4 LT	18	/* Some constants */
	19	#define HFSPLUS_SECTOR_SIZE 512
	20	#define HFSPLUS_SECTOR_SHIFT 9
	21	#define HFSPLUS_VOLHEAD_SECTOR 2
	22	#define HFSPLUS_VOLHEAD_SIG 0x482b
2179d372	23	#define HFSPLUS_VOLHEAD_SIGX 0x4858
1da177e4	24	#define HFSPLUS_SUPER_MAGIC 0x482b
2179d372 DE	25	#define HFSPLUS_MIN_VERSION 4
2179d372 DE	26	#define HFSPLUS_CURRENT_VERSION 5
1da177e4 LT	27
	28	#define HFSP_WRAP_MAGIC 0x4244
	29	#define HFSP_WRAP_ATTRIB_SLOCK 0x8000
	30	#define HFSP_WRAP_ATTRIB_SPARED 0x0200
	31
	32	#define HFSP_WRAPOFF_SIG 0x00
	33	#define HFSP_WRAPOFF_ATTRIB 0x0A
	34	#define HFSP_WRAPOFF_ABLKSIZE 0x14
	35	#define HFSP_WRAPOFF_ABLKSTART 0x1C
	36	#define HFSP_WRAPOFF_EMBEDSIG 0x7C
	37	#define HFSP_WRAPOFF_EMBEDEXT 0x7E
	38
	39	#define HFSP_HIDDENDIR_NAME "\xe2\x90\x80\xe2\x90\x80\xe2\x90\x80\xe2\x90\x80HFS+ Private Data"
	40
	41	#define HFSP_HARDLINK_TYPE 0x686c6e6b /* 'hlnk' */
	42	#define HFSP_HFSPLUS_CREATOR 0x6866732b /* 'hfs+' */
	43
6b192832 RZ	44	#define HFSP_SYMLINK_TYPE 0x736c6e6b /* 'slnk' */
	45	#define HFSP_SYMLINK_CREATOR 0x72686170 /* 'rhap' */
	46
1da177e4 LT	47	#define HFSP_MOUNT_VERSION 0x482b4c78 /* 'H+Lx' */
	48
	49	/* Structures used on disk */
	50
	51	typedef __be32 hfsplus_cnid;
	52	typedef __be16 hfsplus_unichr;
	53
	54	/* A "string" as used in filenames, etc. */
	55	struct hfsplus_unistr {
	56	__be16 length;
	57	hfsplus_unichr unicode[255];
	58	} __packed;
	59
	60	#define HFSPLUS_MAX_STRLEN 255
	61
	62	/* POSIX permissions */
	63	struct hfsplus_perm {
	64	__be32 owner;
	65	__be32 group;
	66	u8 rootflags;
	67	u8 userflags;
	68	__be16 mode;
	69	__be32 dev;
	70	} __packed;
	71
	72	#define HFSPLUS_FLG_NODUMP 0x01
	73	#define HFSPLUS_FLG_IMMUTABLE 0x02
	74	#define HFSPLUS_FLG_APPEND 0x04
	75
	76	/* A single contiguous area of a file */
	77	struct hfsplus_extent {
	78	__be32 start_block;
	79	__be32 block_count;
	80	} __packed;
	81	typedef struct hfsplus_extent hfsplus_extent_rec[8];
	82
	83	/* Information for a "Fork" in a file */
	84	struct hfsplus_fork_raw {
	85	__be64 total_size;
	86	__be32 clump_size;
	87	__be32 total_blocks;
	88	hfsplus_extent_rec extents;
	89	} __packed;
	90
	91	/* HFS+ Volume Header */
	92	struct hfsplus_vh {
	93	__be16 signature;
	94	__be16 version;
	95	__be32 attributes;
	96	__be32 last_mount_vers;
	97	u32 reserved;
	98
	99	__be32 create_date;
	100	__be32 modify_date;
	101	__be32 backup_date;
	102	__be32 checked_date;
	103
	104	__be32 file_count;
	105	__be32 folder_count;
	106
	107	__be32 blocksize;
	108	__be32 total_blocks;
	109	__be32 free_blocks;
	110
111	__be32 next_alloc;
112	__be32 rsrc_clump_sz;
113	__be32 data_clump_sz;
114	hfsplus_cnid next_cnid;
115
116	__be32 write_count;
117	__be64 encodings_bmp;
118
119	u8 finder_info[32];
120
121	struct hfsplus_fork_raw alloc_file;
122	struct hfsplus_fork_raw ext_file;
123	struct hfsplus_fork_raw cat_file;
124	struct hfsplus_fork_raw attr_file;
125	struct hfsplus_fork_raw start_file;
126	} __packed;
127
128	/* HFS+ volume attributes */
b0b623c3 RZ	129	#define HFSPLUS_VOL_UNMNT (1 << 8)
	130	#define HFSPLUS_VOL_SPARE_BLK (1 << 9)
	131	#define HFSPLUS_VOL_NOCACHE (1 << 10)
	132	#define HFSPLUS_VOL_INCNSTNT (1 << 11)
	133	#define HFSPLUS_VOL_NODEID_REUSED (1 << 12)
	134	#define HFSPLUS_VOL_JOURNALED (1 << 13)
	135	#define HFSPLUS_VOL_SOFTLOCK (1 << 15)
1da177e4 LT	136
	137	/* HFS+ BTree node descriptor */
	138	struct hfs_bnode_desc {
	139	__be32 next;
	140	__be32 prev;
	141	s8 type;
	142	u8 height;
	143	__be16 num_recs;
	144	u16 reserved;
	145	} __packed;
	146
	147	/* HFS+ BTree node types */
	148	#define HFS_NODE_INDEX 0x00
	149	#define HFS_NODE_HEADER 0x01
	150	#define HFS_NODE_MAP 0x02
	151	#define HFS_NODE_LEAF 0xFF
	152
	153	/* HFS+ BTree header */
	154	struct hfs_btree_header_rec {
	155	__be16 depth;
	156	__be32 root;
	157	__be32 leaf_count;
	158	__be32 leaf_head;
	159	__be32 leaf_tail;
	160	__be16 node_size;
	161	__be16 max_key_len;
	162	__be32 node_count;
	163	__be32 free_nodes;
	164	u16 reserved1;
	165	__be32 clump_size;
	166	u8 btree_type;
2179d372	167	u8 key_type;
1da177e4 LT	168	__be32 attributes;
	169	u32 reserved3[16];
	170	} __packed;
	171
	172	/* BTree attributes */
	173	#define HFS_TREE_BIGKEYS 2
	174	#define HFS_TREE_VARIDXKEYS 4
	175
	176	/* HFS+ BTree misc info */
	177	#define HFSPLUS_TREE_HEAD 0
	178	#define HFSPLUS_NODE_MXSZ 32768
	179
	180	/* Some special File ID numbers (stolen from hfs.h) */
	181	#define HFSPLUS_POR_CNID 1 /* Parent Of the Root */
	182	#define HFSPLUS_ROOT_CNID 2 /* ROOT directory */
	183	#define HFSPLUS_EXT_CNID 3 /* EXTents B-tree */
	184	#define HFSPLUS_CAT_CNID 4 /* CATalog B-tree */
	185	#define HFSPLUS_BAD_CNID 5 /* BAD blocks file */
	186	#define HFSPLUS_ALLOC_CNID 6 /* ALLOCation file */
	187	#define HFSPLUS_START_CNID 7 /* STARTup file */
	188	#define HFSPLUS_ATTR_CNID 8 /* ATTRibutes file */
	189	#define HFSPLUS_EXCH_CNID 15 /* ExchangeFiles temp id */
	190	#define HFSPLUS_FIRSTUSER_CNID 16 /* first available user id */
	191
2179d372 DE	192	/* btree key type */
	193	#define HFSPLUS_KEY_CASEFOLDING 0xCF /* case-insensitive */
	194	#define HFSPLUS_KEY_BINARY 0xBC /* case-sensitive */
	195
1da177e4 LT	196	/* HFS+ catalog entry key */
	197	struct hfsplus_cat_key {
	198	__be16 key_len;
	199	hfsplus_cnid parent;
	200	struct hfsplus_unistr name;
	201	} __packed;
	202
	203
	204	/* Structs from hfs.h */
	205	struct hfsp_point {
	206	__be16 v;
	207	__be16 h;
	208	} __packed;
	209
	210	struct hfsp_rect {
	211	__be16 top;
	212	__be16 left;
	213	__be16 bottom;
	214	__be16 right;
	215	} __packed;
	216
	217
	218	/* HFS directory info (stolen from hfs.h */
	219	struct DInfo {
	220	struct hfsp_rect frRect;
	221	__be16 frFlags;
	222	struct hfsp_point frLocation;
	223	__be16 frView;
	224	} __packed;
	225
	226	struct DXInfo {
	227	struct hfsp_point frScroll;
	228	__be32 frOpenChain;
	229	__be16 frUnused;
	230	__be16 frComment;
	231	__be32 frPutAway;
	232	} __packed;
	233
	234	/* HFS+ folder data (part of an hfsplus_cat_entry) */
	235	struct hfsplus_cat_folder {
	236	__be16 type;
	237	__be16 flags;
	238	__be32 valence;
	239	hfsplus_cnid id;
	240	__be32 create_date;
	241	__be32 content_mod_date;
	242	__be32 attribute_mod_date;
	243	__be32 access_date;
	244	__be32 backup_date;
	245	struct hfsplus_perm permissions;
	246	struct DInfo user_info;
	247	struct DXInfo finder_info;
	248	__be32 text_encoding;
	249	u32 reserved;
	250	} __packed;
	251
	252	/* HFS file info (stolen from hfs.h) */
	253	struct FInfo {
	254	__be32 fdType;
	255	__be32 fdCreator;
	256	__be16 fdFlags;
	257	struct hfsp_point fdLocation;
	258	__be16 fdFldr;
	259	} __packed;
260
261	struct FXInfo {
262	__be16 fdIconID;
263	u8 fdUnused[8];
264	__be16 fdComment;
265	__be32 fdPutAway;
266	} __packed;
267
268	/* HFS+ file data (part of a cat_entry) */
269	struct hfsplus_cat_file {
270	__be16 type;
271	__be16 flags;
272	u32 reserved1;
273	hfsplus_cnid id;
274	__be32 create_date;
275	__be32 content_mod_date;
276	__be32 attribute_mod_date;
277	__be32 access_date;
278	__be32 backup_date;
279	struct hfsplus_perm permissions;
280	struct FInfo user_info;
281	struct FXInfo finder_info;
282	__be32 text_encoding;
283	u32 reserved2;
284
285	struct hfsplus_fork_raw data_fork;
286	struct hfsplus_fork_raw rsrc_fork;
287	} __packed;
288
289	/* File attribute bits */
290	#define HFSPLUS_FILE_LOCKED 0x0001
291	#define HFSPLUS_FILE_THREAD_EXISTS 0x0002
292
293	/* HFS+ catalog thread (part of a cat_entry) */
294	struct hfsplus_cat_thread {
295	__be16 type;
296	s16 reserved;
297	hfsplus_cnid parentID;
298	struct hfsplus_unistr nodeName;
299	} __packed;
300
301	#define HFSPLUS_MIN_THREAD_SZ 10
302
303	/* A data record in the catalog tree */
304	typedef union {
305	__be16 type;
306	struct hfsplus_cat_folder folder;
307	struct hfsplus_cat_file file;
308	struct hfsplus_cat_thread thread;
309	} __packed hfsplus_cat_entry;
310
311	/* HFS+ catalog entry type */
312	#define HFSPLUS_FOLDER 0x0001
313	#define HFSPLUS_FILE 0x0002
314	#define HFSPLUS_FOLDER_THREAD 0x0003
315	#define HFSPLUS_FILE_THREAD 0x0004
316
317	/* HFS+ extents tree key */
318	struct hfsplus_ext_key {
319	__be16 key_len;
320	u8 fork_type;
321	u8 pad;
322	hfsplus_cnid cnid;
323	__be32 start_block;
324	} __packed;
325
326	#define HFSPLUS_EXT_KEYLEN 12
327
328	/* HFS+ generic BTree key */
329	typedef union {
330	__be16 key_len;
331	struct hfsplus_cat_key cat;
332	struct hfsplus_ext_key ext;
333	} __packed hfsplus_btree_key;
334
335	#endif