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