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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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
Linus Torvalds1da177e2005-04-16 15:20:36 -070018/* 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
David Elliott2179d372006-01-18 17:43:08 -080023#define HFSPLUS_VOLHEAD_SIGX 0x4858
Linus Torvalds1da177e2005-04-16 15:20:36 -070024#define HFSPLUS_SUPER_MAGIC 0x482b
David Elliott2179d372006-01-18 17:43:08 -080025#define HFSPLUS_MIN_VERSION 4
26#define HFSPLUS_CURRENT_VERSION 5
Linus Torvalds1da177e2005-04-16 15:20:36 -070027
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
Anton Salikhmetov2753cc22010-12-16 18:08:38 +020039#define HFSP_HIDDENDIR_NAME \
40 "\xe2\x90\x80\xe2\x90\x80\xe2\x90\x80\xe2\x90\x80HFS+ Private Data"
Linus Torvalds1da177e2005-04-16 15:20:36 -070041
42#define HFSP_HARDLINK_TYPE 0x686c6e6b /* 'hlnk' */
43#define HFSP_HFSPLUS_CREATOR 0x6866732b /* 'hfs+' */
44
Roman Zippel6b1928322006-01-18 17:43:12 -080045#define HFSP_SYMLINK_TYPE 0x736c6e6b /* 'slnk' */
46#define HFSP_SYMLINK_CREATOR 0x72686170 /* 'rhap' */
47
Linus Torvalds1da177e2005-04-16 15:20:36 -070048#define HFSP_MOUNT_VERSION 0x482b4c78 /* 'H+Lx' */
49
50/* Structures used on disk */
51
52typedef __be32 hfsplus_cnid;
53typedef __be16 hfsplus_unichr;
54
55/* A "string" as used in filenames, etc. */
56struct hfsplus_unistr {
57 __be16 length;
58 hfsplus_unichr unicode[255];
59} __packed;
60
61#define HFSPLUS_MAX_STRLEN 255
62
63/* POSIX permissions */
64struct hfsplus_perm {
65 __be32 owner;
66 __be32 group;
67 u8 rootflags;
68 u8 userflags;
69 __be16 mode;
70 __be32 dev;
71} __packed;
72
73#define HFSPLUS_FLG_NODUMP 0x01
74#define HFSPLUS_FLG_IMMUTABLE 0x02
75#define HFSPLUS_FLG_APPEND 0x04
76
77/* A single contiguous area of a file */
78struct hfsplus_extent {
79 __be32 start_block;
80 __be32 block_count;
81} __packed;
82typedef struct hfsplus_extent hfsplus_extent_rec[8];
83
84/* Information for a "Fork" in a file */
85struct hfsplus_fork_raw {
86 __be64 total_size;
87 __be32 clump_size;
88 __be32 total_blocks;
89 hfsplus_extent_rec extents;
90} __packed;
91
92/* HFS+ Volume Header */
93struct hfsplus_vh {
94 __be16 signature;
95 __be16 version;
96 __be32 attributes;
97 __be32 last_mount_vers;
98 u32 reserved;
99
100 __be32 create_date;
101 __be32 modify_date;
102 __be32 backup_date;
103 __be32 checked_date;
104
105 __be32 file_count;
106 __be32 folder_count;
107
108 __be32 blocksize;
109 __be32 total_blocks;
110 __be32 free_blocks;
111
112 __be32 next_alloc;
113 __be32 rsrc_clump_sz;
114 __be32 data_clump_sz;
115 hfsplus_cnid next_cnid;
116
117 __be32 write_count;
118 __be64 encodings_bmp;
119
120 u8 finder_info[32];
121
122 struct hfsplus_fork_raw alloc_file;
123 struct hfsplus_fork_raw ext_file;
124 struct hfsplus_fork_raw cat_file;
125 struct hfsplus_fork_raw attr_file;
126 struct hfsplus_fork_raw start_file;
127} __packed;
128
129/* HFS+ volume attributes */
Roman Zippelb0b623c2005-11-29 19:34:41 -0800130#define HFSPLUS_VOL_UNMNT (1 << 8)
131#define HFSPLUS_VOL_SPARE_BLK (1 << 9)
132#define HFSPLUS_VOL_NOCACHE (1 << 10)
133#define HFSPLUS_VOL_INCNSTNT (1 << 11)
134#define HFSPLUS_VOL_NODEID_REUSED (1 << 12)
135#define HFSPLUS_VOL_JOURNALED (1 << 13)
136#define HFSPLUS_VOL_SOFTLOCK (1 << 15)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700137
138/* HFS+ BTree node descriptor */
139struct hfs_bnode_desc {
140 __be32 next;
141 __be32 prev;
142 s8 type;
143 u8 height;
144 __be16 num_recs;
145 u16 reserved;
146} __packed;
147
148/* HFS+ BTree node types */
149#define HFS_NODE_INDEX 0x00
150#define HFS_NODE_HEADER 0x01
151#define HFS_NODE_MAP 0x02
152#define HFS_NODE_LEAF 0xFF
153
154/* HFS+ BTree header */
155struct hfs_btree_header_rec {
156 __be16 depth;
157 __be32 root;
158 __be32 leaf_count;
159 __be32 leaf_head;
160 __be32 leaf_tail;
161 __be16 node_size;
162 __be16 max_key_len;
163 __be32 node_count;
164 __be32 free_nodes;
165 u16 reserved1;
166 __be32 clump_size;
167 u8 btree_type;
David Elliott2179d372006-01-18 17:43:08 -0800168 u8 key_type;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169 __be32 attributes;
170 u32 reserved3[16];
171} __packed;
172
173/* BTree attributes */
174#define HFS_TREE_BIGKEYS 2
175#define HFS_TREE_VARIDXKEYS 4
176
177/* HFS+ BTree misc info */
178#define HFSPLUS_TREE_HEAD 0
179#define HFSPLUS_NODE_MXSZ 32768
180
181/* Some special File ID numbers (stolen from hfs.h) */
182#define HFSPLUS_POR_CNID 1 /* Parent Of the Root */
183#define HFSPLUS_ROOT_CNID 2 /* ROOT directory */
184#define HFSPLUS_EXT_CNID 3 /* EXTents B-tree */
185#define HFSPLUS_CAT_CNID 4 /* CATalog B-tree */
186#define HFSPLUS_BAD_CNID 5 /* BAD blocks file */
187#define HFSPLUS_ALLOC_CNID 6 /* ALLOCation file */
188#define HFSPLUS_START_CNID 7 /* STARTup file */
189#define HFSPLUS_ATTR_CNID 8 /* ATTRibutes file */
190#define HFSPLUS_EXCH_CNID 15 /* ExchangeFiles temp id */
191#define HFSPLUS_FIRSTUSER_CNID 16 /* first available user id */
192
David Elliott2179d372006-01-18 17:43:08 -0800193/* btree key type */
194#define HFSPLUS_KEY_CASEFOLDING 0xCF /* case-insensitive */
195#define HFSPLUS_KEY_BINARY 0xBC /* case-sensitive */
196
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197/* HFS+ catalog entry key */
198struct hfsplus_cat_key {
199 __be16 key_len;
200 hfsplus_cnid parent;
201 struct hfsplus_unistr name;
202} __packed;
203
Eric Sandeen9250f922010-10-14 09:53:48 -0400204#define HFSPLUS_CAT_KEYLEN (sizeof(struct hfsplus_cat_key))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700205
206/* Structs from hfs.h */
207struct hfsp_point {
208 __be16 v;
209 __be16 h;
210} __packed;
211
212struct hfsp_rect {
213 __be16 top;
214 __be16 left;
215 __be16 bottom;
216 __be16 right;
217} __packed;
218
219
220/* HFS directory info (stolen from hfs.h */
221struct DInfo {
222 struct hfsp_rect frRect;
223 __be16 frFlags;
224 struct hfsp_point frLocation;
225 __be16 frView;
226} __packed;
227
228struct DXInfo {
229 struct hfsp_point frScroll;
230 __be32 frOpenChain;
231 __be16 frUnused;
232 __be16 frComment;
233 __be32 frPutAway;
234} __packed;
235
236/* HFS+ folder data (part of an hfsplus_cat_entry) */
237struct hfsplus_cat_folder {
238 __be16 type;
239 __be16 flags;
240 __be32 valence;
241 hfsplus_cnid id;
242 __be32 create_date;
243 __be32 content_mod_date;
244 __be32 attribute_mod_date;
245 __be32 access_date;
246 __be32 backup_date;
247 struct hfsplus_perm permissions;
248 struct DInfo user_info;
249 struct DXInfo finder_info;
250 __be32 text_encoding;
251 u32 reserved;
252} __packed;
253
254/* HFS file info (stolen from hfs.h) */
255struct FInfo {
256 __be32 fdType;
257 __be32 fdCreator;
258 __be16 fdFlags;
259 struct hfsp_point fdLocation;
260 __be16 fdFldr;
261} __packed;
262
263struct FXInfo {
264 __be16 fdIconID;
265 u8 fdUnused[8];
266 __be16 fdComment;
267 __be32 fdPutAway;
268} __packed;
269
270/* HFS+ file data (part of a cat_entry) */
271struct hfsplus_cat_file {
272 __be16 type;
273 __be16 flags;
274 u32 reserved1;
275 hfsplus_cnid id;
276 __be32 create_date;
277 __be32 content_mod_date;
278 __be32 attribute_mod_date;
279 __be32 access_date;
280 __be32 backup_date;
281 struct hfsplus_perm permissions;
282 struct FInfo user_info;
283 struct FXInfo finder_info;
284 __be32 text_encoding;
285 u32 reserved2;
286
287 struct hfsplus_fork_raw data_fork;
288 struct hfsplus_fork_raw rsrc_fork;
289} __packed;
290
291/* File attribute bits */
292#define HFSPLUS_FILE_LOCKED 0x0001
293#define HFSPLUS_FILE_THREAD_EXISTS 0x0002
294
295/* HFS+ catalog thread (part of a cat_entry) */
296struct hfsplus_cat_thread {
297 __be16 type;
298 s16 reserved;
299 hfsplus_cnid parentID;
300 struct hfsplus_unistr nodeName;
301} __packed;
302
303#define HFSPLUS_MIN_THREAD_SZ 10
304
305/* A data record in the catalog tree */
306typedef union {
307 __be16 type;
308 struct hfsplus_cat_folder folder;
309 struct hfsplus_cat_file file;
310 struct hfsplus_cat_thread thread;
311} __packed hfsplus_cat_entry;
312
313/* HFS+ catalog entry type */
314#define HFSPLUS_FOLDER 0x0001
315#define HFSPLUS_FILE 0x0002
316#define HFSPLUS_FOLDER_THREAD 0x0003
317#define HFSPLUS_FILE_THREAD 0x0004
318
319/* HFS+ extents tree key */
320struct hfsplus_ext_key {
321 __be16 key_len;
322 u8 fork_type;
323 u8 pad;
324 hfsplus_cnid cnid;
325 __be32 start_block;
326} __packed;
327
Eric Sandeen9250f922010-10-14 09:53:48 -0400328#define HFSPLUS_EXT_KEYLEN sizeof(struct hfsplus_ext_key)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700329
330/* HFS+ generic BTree key */
331typedef union {
332 __be16 key_len;
333 struct hfsplus_cat_key cat;
334 struct hfsplus_ext_key ext;
335} __packed hfsplus_btree_key;
336
337#endif