hfsplus_raw.h 7.3 KB

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