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