1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 *  linux/include/linux/hfsplus_raw.h
4 *
5 * Copyright (C) 1999
6 * Brad Boyer (flar@pants.nu)
7 * (C) 2003 Ardis Technologies <roman@ardistech.com>
8 *
9 * Format of structures on disk
10 * Information taken from Apple Technote #1150 (HFS Plus Volume Format)
11 *
12 */
13
14#ifndef _LINUX_HFSPLUS_RAW_H
15#define _LINUX_HFSPLUS_RAW_H
16
17#include <linux/types.h>
18
19/* Some constants */
20#define HFSPLUS_SECTOR_SIZE        512
21#define HFSPLUS_SECTOR_SHIFT         9
22#define HFSPLUS_VOLHEAD_SECTOR       2
23#define HFSPLUS_VOLHEAD_SIG     0x482b
24#define HFSPLUS_VOLHEAD_SIGX    0x4858
25#define HFSPLUS_SUPER_MAGIC     0x482b
26#define HFSPLUS_MIN_VERSION          4
27#define HFSPLUS_CURRENT_VERSION      5
28
29#define HFSP_WRAP_MAGIC         0x4244
30#define HFSP_WRAP_ATTRIB_SLOCK  0x8000
31#define HFSP_WRAP_ATTRIB_SPARED 0x0200
32
33#define HFSP_WRAPOFF_SIG          0x00
34#define HFSP_WRAPOFF_ATTRIB       0x0A
35#define HFSP_WRAPOFF_ABLKSIZE     0x14
36#define HFSP_WRAPOFF_ABLKSTART    0x1C
37#define HFSP_WRAPOFF_EMBEDSIG     0x7C
38#define HFSP_WRAPOFF_EMBEDEXT     0x7E
39
40#define HFSP_HIDDENDIR_NAME \
41	"\xe2\x90\x80\xe2\x90\x80\xe2\x90\x80\xe2\x90\x80HFS+ Private Data"
42
43#define HFSP_HARDLINK_TYPE	0x686c6e6b	/* 'hlnk' */
44#define HFSP_HFSPLUS_CREATOR	0x6866732b	/* 'hfs+' */
45
46#define HFSP_SYMLINK_TYPE	0x736c6e6b	/* 'slnk' */
47#define HFSP_SYMLINK_CREATOR	0x72686170	/* 'rhap' */
48
49#define HFSP_MOUNT_VERSION	0x482b4c78	/* 'H+Lx' */
50
51/* Structures used on disk */
52
53typedef __be32 hfsplus_cnid;
54typedef __be16 hfsplus_unichr;
55
56#define HFSPLUS_MAX_STRLEN 255
57#define HFSPLUS_ATTR_MAX_STRLEN 127
58
59/* A "string" as used in filenames, etc. */
60struct hfsplus_unistr {
61	__be16 length;
62	hfsplus_unichr unicode[HFSPLUS_MAX_STRLEN];
63} __packed;
64
65/*
66 * A "string" is used in attributes file
67 * for name of extended attribute
68 */
69struct hfsplus_attr_unistr {
70	__be16 length;
71	hfsplus_unichr unicode[HFSPLUS_ATTR_MAX_STRLEN];
72} __packed;
73
74/* POSIX permissions */
75struct hfsplus_perm {
76	__be32 owner;
77	__be32 group;
78	u8  rootflags;
79	u8  userflags;
80	__be16 mode;
81	__be32 dev;
82} __packed;
83
84#define HFSPLUS_FLG_NODUMP	0x01
85#define HFSPLUS_FLG_IMMUTABLE	0x02
86#define HFSPLUS_FLG_APPEND	0x04
87
88/* A single contiguous area of a file */
89struct hfsplus_extent {
90	__be32 start_block;
91	__be32 block_count;
92} __packed;
93typedef struct hfsplus_extent hfsplus_extent_rec[8];
94
95/* Information for a "Fork" in a file */
96struct hfsplus_fork_raw {
97	__be64 total_size;
98	__be32 clump_size;
99	__be32 total_blocks;
100	hfsplus_extent_rec extents;
101} __packed;
102
103/* HFS+ Volume Header */
104struct hfsplus_vh {
105	__be16 signature;
106	__be16 version;
107	__be32 attributes;
108	__be32 last_mount_vers;
109	u32 reserved;
110
111	__be32 create_date;
112	__be32 modify_date;
113	__be32 backup_date;
114	__be32 checked_date;
115
116	__be32 file_count;
117	__be32 folder_count;
118
119	__be32 blocksize;
120	__be32 total_blocks;
121	__be32 free_blocks;
122
123	__be32 next_alloc;
124	__be32 rsrc_clump_sz;
125	__be32 data_clump_sz;
126	hfsplus_cnid next_cnid;
127
128	__be32 write_count;
129	__be64 encodings_bmp;
130
131	u32 finder_info[8];
132
133	struct hfsplus_fork_raw alloc_file;
134	struct hfsplus_fork_raw ext_file;
135	struct hfsplus_fork_raw cat_file;
136	struct hfsplus_fork_raw attr_file;
137	struct hfsplus_fork_raw start_file;
138} __packed;
139
140/* HFS+ volume attributes */
141#define HFSPLUS_VOL_UNMNT		(1 << 8)
142#define HFSPLUS_VOL_SPARE_BLK		(1 << 9)
143#define HFSPLUS_VOL_NOCACHE		(1 << 10)
144#define HFSPLUS_VOL_INCNSTNT		(1 << 11)
145#define HFSPLUS_VOL_NODEID_REUSED	(1 << 12)
146#define HFSPLUS_VOL_JOURNALED		(1 << 13)
147#define HFSPLUS_VOL_SOFTLOCK		(1 << 15)
148#define HFSPLUS_VOL_UNUSED_NODE_FIX	(1 << 31)
149
150/* HFS+ BTree node descriptor */
151struct hfs_bnode_desc {
152	__be32 next;
153	__be32 prev;
154	s8 type;
155	u8 height;
156	__be16 num_recs;
157	u16 reserved;
158} __packed;
159
160/* HFS+ BTree node types */
161#define HFS_NODE_INDEX	0x00	/* An internal (index) node */
162#define HFS_NODE_HEADER	0x01	/* The tree header node (node 0) */
163#define HFS_NODE_MAP	0x02	/* Holds part of the bitmap of used nodes */
164#define HFS_NODE_LEAF	0xFF	/* A leaf (ndNHeight==1) node */
165
166/* HFS+ BTree header */
167struct hfs_btree_header_rec {
168	__be16 depth;
169	__be32 root;
170	__be32 leaf_count;
171	__be32 leaf_head;
172	__be32 leaf_tail;
173	__be16 node_size;
174	__be16 max_key_len;
175	__be32 node_count;
176	__be32 free_nodes;
177	u16 reserved1;
178	__be32 clump_size;
179	u8 btree_type;
180	u8 key_type;
181	__be32 attributes;
182	u32 reserved3[16];
183} __packed;
184
185/* BTree attributes */
186#define HFS_TREE_BIGKEYS	2
187#define HFS_TREE_VARIDXKEYS	4
188
189/* HFS+ BTree misc info */
190#define HFSPLUS_TREE_HEAD 0
191#define HFSPLUS_NODE_MXSZ 32768
192#define HFSPLUS_ATTR_TREE_NODE_SIZE		8192
193#define HFSPLUS_BTREE_HDR_NODE_RECS_COUNT	3
194#define HFSPLUS_BTREE_HDR_USER_BYTES		128
195
196/* Some special File ID numbers (stolen from hfs.h) */
197#define HFSPLUS_POR_CNID		1	/* Parent Of the Root */
198#define HFSPLUS_ROOT_CNID		2	/* ROOT directory */
199#define HFSPLUS_EXT_CNID		3	/* EXTents B-tree */
200#define HFSPLUS_CAT_CNID		4	/* CATalog B-tree */
201#define HFSPLUS_BAD_CNID		5	/* BAD blocks file */
202#define HFSPLUS_ALLOC_CNID		6	/* ALLOCation file */
203#define HFSPLUS_START_CNID		7	/* STARTup file */
204#define HFSPLUS_ATTR_CNID		8	/* ATTRibutes file */
205#define HFSPLUS_EXCH_CNID		15	/* ExchangeFiles temp id */
206#define HFSPLUS_FIRSTUSER_CNID		16	/* first available user id */
207
208/* btree key type */
209#define HFSPLUS_KEY_CASEFOLDING		0xCF	/* case-insensitive */
210#define HFSPLUS_KEY_BINARY		0xBC	/* case-sensitive */
211
212/* HFS+ catalog entry key */
213struct hfsplus_cat_key {
214	__be16 key_len;
215	hfsplus_cnid parent;
216	struct hfsplus_unistr name;
217} __packed;
218
219#define HFSPLUS_CAT_KEYLEN	(sizeof(struct hfsplus_cat_key))
220
221/* Structs from hfs.h */
222struct hfsp_point {
223	__be16 v;
224	__be16 h;
225} __packed;
226
227struct hfsp_rect {
228	__be16 top;
229	__be16 left;
230	__be16 bottom;
231	__be16 right;
232} __packed;
233
234
235/* HFS directory info (stolen from hfs.h */
236struct DInfo {
237	struct hfsp_rect frRect;
238	__be16 frFlags;
239	struct hfsp_point frLocation;
240	__be16 frView;
241} __packed;
242
243struct DXInfo {
244	struct hfsp_point frScroll;
245	__be32 frOpenChain;
246	__be16 frUnused;
247	__be16 frComment;
248	__be32 frPutAway;
249} __packed;
250
251/* HFS+ folder data (part of an hfsplus_cat_entry) */
252struct hfsplus_cat_folder {
253	__be16 type;
254	__be16 flags;
255	__be32 valence;
256	hfsplus_cnid id;
257	__be32 create_date;
258	__be32 content_mod_date;
259	__be32 attribute_mod_date;
260	__be32 access_date;
261	__be32 backup_date;
262	struct hfsplus_perm permissions;
263	struct DInfo user_info;
264	struct DXInfo finder_info;
265	__be32 text_encoding;
266	__be32 subfolders;	/* Subfolder count in HFSX. Reserved in HFS+. */
267} __packed;
268
269/* HFS file info (stolen from hfs.h) */
270struct FInfo {
271	__be32 fdType;
272	__be32 fdCreator;
273	__be16 fdFlags;
274	struct hfsp_point fdLocation;
275	__be16 fdFldr;
276} __packed;
277
278struct FXInfo {
279	__be16 fdIconID;
280	u8 fdUnused[8];
281	__be16 fdComment;
282	__be32 fdPutAway;
283} __packed;
284
285/* HFS+ file data (part of a cat_entry) */
286struct hfsplus_cat_file {
287	__be16 type;
288	__be16 flags;
289	u32 reserved1;
290	hfsplus_cnid id;
291	__be32 create_date;
292	__be32 content_mod_date;
293	__be32 attribute_mod_date;
294	__be32 access_date;
295	__be32 backup_date;
296	struct hfsplus_perm permissions;
297	struct FInfo user_info;
298	struct FXInfo finder_info;
299	__be32 text_encoding;
300	u32 reserved2;
301
302	struct hfsplus_fork_raw data_fork;
303	struct hfsplus_fork_raw rsrc_fork;
304} __packed;
305
306/* File and folder flag bits */
307#define HFSPLUS_FILE_LOCKED		0x0001
308#define HFSPLUS_FILE_THREAD_EXISTS	0x0002
309#define HFSPLUS_XATTR_EXISTS		0x0004
310#define HFSPLUS_ACL_EXISTS		0x0008
311#define HFSPLUS_HAS_FOLDER_COUNT	0x0010	/* Folder has subfolder count
312						 * (HFSX only) */
313
314/* HFS+ catalog thread (part of a cat_entry) */
315struct hfsplus_cat_thread {
316	__be16 type;
317	s16 reserved;
318	hfsplus_cnid parentID;
319	struct hfsplus_unistr nodeName;
320} __packed;
321
322#define HFSPLUS_MIN_THREAD_SZ 10
323
324/* A data record in the catalog tree */
325typedef union {
326	__be16 type;
327	struct hfsplus_cat_folder folder;
328	struct hfsplus_cat_file file;
329	struct hfsplus_cat_thread thread;
330} __packed hfsplus_cat_entry;
331
332/* HFS+ catalog entry type */
333#define HFSPLUS_FOLDER         0x0001
334#define HFSPLUS_FILE           0x0002
335#define HFSPLUS_FOLDER_THREAD  0x0003
336#define HFSPLUS_FILE_THREAD    0x0004
337
338/* HFS+ extents tree key */
339struct hfsplus_ext_key {
340	__be16 key_len;
341	u8 fork_type;
342	u8 pad;
343	hfsplus_cnid cnid;
344	__be32 start_block;
345} __packed;
346
347#define HFSPLUS_EXT_KEYLEN	sizeof(struct hfsplus_ext_key)
348
349#define HFSPLUS_XATTR_FINDER_INFO_NAME "com.apple.FinderInfo"
350#define HFSPLUS_XATTR_ACL_NAME "com.apple.system.Security"
351
352#define HFSPLUS_ATTR_INLINE_DATA 0x10
353#define HFSPLUS_ATTR_FORK_DATA   0x20
354#define HFSPLUS_ATTR_EXTENTS     0x30
355
356/* HFS+ attributes tree key */
357struct hfsplus_attr_key {
358	__be16 key_len;
359	__be16 pad;
360	hfsplus_cnid cnid;
361	__be32 start_block;
362	struct hfsplus_attr_unistr key_name;
363} __packed;
364
365#define HFSPLUS_ATTR_KEYLEN	sizeof(struct hfsplus_attr_key)
366
367/* HFS+ fork data attribute */
368struct hfsplus_attr_fork_data {
369	__be32 record_type;
370	__be32 reserved;
371	struct hfsplus_fork_raw the_fork;
372} __packed;
373
374/* HFS+ extension attribute */
375struct hfsplus_attr_extents {
376	__be32 record_type;
377	__be32 reserved;
378	struct hfsplus_extent extents;
379} __packed;
380
381#define HFSPLUS_MAX_INLINE_DATA_SIZE 3802
382
383/* HFS+ attribute inline data */
384struct hfsplus_attr_inline_data {
385	__be32 record_type;
386	__be32 reserved1;
387	u8 reserved2[6];
388	__be16 length;
389	u8 raw_bytes[HFSPLUS_MAX_INLINE_DATA_SIZE];
390} __packed;
391
392/* A data record in the attributes tree */
393typedef union {
394	__be32 record_type;
395	struct hfsplus_attr_fork_data fork_data;
396	struct hfsplus_attr_extents extents;
397	struct hfsplus_attr_inline_data inline_data;
398} __packed hfsplus_attr_entry;
399
400/* HFS+ generic BTree key */
401typedef union {
402	__be16 key_len;
403	struct hfsplus_cat_key cat;
404	struct hfsplus_ext_key ext;
405	struct hfsplus_attr_key attr;
406} __packed hfsplus_btree_key;
407
408#endif
409