1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * HFS/HFS+ common definitions, inline functions, 4 * and shared functionality. 5 */ 6 7 #ifndef _HFS_COMMON_H_ 8 #define _HFS_COMMON_H_ 9 10 #ifdef pr_fmt 11 #undef pr_fmt 12 #endif 13 14 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 15 16 #define hfs_dbg(fmt, ...) \ 17 pr_debug("pid %d:%s:%d %s(): " fmt, \ 18 current->pid, __FILE__, __LINE__, __func__, ##__VA_ARGS__) \ 19 20 /* 21 * Format of structures on disk 22 * Information taken from Apple Technote #1150 (HFS Plus Volume Format) 23 */ 24 25 /* offsets to various blocks */ 26 #define HFS_DD_BLK 0 /* Driver Descriptor block */ 27 #define HFS_PMAP_BLK 1 /* First block of partition map */ 28 #define HFS_MDB_BLK 2 /* Block (w/i partition) of MDB */ 29 30 /* magic numbers for various disk blocks */ 31 #define HFS_DRVR_DESC_MAGIC 0x4552 /* "ER": driver descriptor map */ 32 #define HFS_OLD_PMAP_MAGIC 0x5453 /* "TS": old-type partition map */ 33 #define HFS_NEW_PMAP_MAGIC 0x504D /* "PM": new-type partition map */ 34 #define HFS_SUPER_MAGIC 0x4244 /* "BD": HFS MDB (super block) */ 35 #define HFS_MFS_SUPER_MAGIC 0xD2D7 /* MFS MDB (super block) */ 36 37 #define HFSPLUS_VOLHEAD_SIG 0x482b 38 #define HFSPLUS_VOLHEAD_SIGX 0x4858 39 #define HFSPLUS_SUPER_MAGIC 0x482b 40 41 #define HFSP_WRAP_MAGIC 0x4244 42 #define HFSP_WRAP_ATTRIB_SLOCK 0x8000 43 #define HFSP_WRAP_ATTRIB_SPARED 0x0200 44 45 #define HFSP_WRAPOFF_SIG 0x00 46 #define HFSP_WRAPOFF_ATTRIB 0x0A 47 #define HFSP_WRAPOFF_ABLKSIZE 0x14 48 #define HFSP_WRAPOFF_ABLKSTART 0x1C 49 #define HFSP_WRAPOFF_EMBEDSIG 0x7C 50 #define HFSP_WRAPOFF_EMBEDEXT 0x7E 51 52 #define HFSP_HARDLINK_TYPE 0x686c6e6b /* 'hlnk' */ 53 #define HFSP_HFSPLUS_CREATOR 0x6866732b /* 'hfs+' */ 54 55 #define HFSP_SYMLINK_TYPE 0x736c6e6b /* 'slnk' */ 56 #define HFSP_SYMLINK_CREATOR 0x72686170 /* 'rhap' */ 57 58 #define HFSP_MOUNT_VERSION 0x482b4c78 /* 'H+Lx' */ 59 60 #define HFSP_HIDDENDIR_NAME \ 61 "\xe2\x90\x80\xe2\x90\x80\xe2\x90\x80\xe2\x90\x80HFS+ Private Data" 62 63 /* various FIXED size parameters */ 64 #define HFS_SECTOR_SIZE 512 /* size of an HFS sector */ 65 #define HFS_SECTOR_SIZE_BITS 9 /* log_2(HFS_SECTOR_SIZE) */ 66 #define HFS_MAX_VALENCE 32767U 67 68 #define HFSPLUS_SECTOR_SIZE HFS_SECTOR_SIZE 69 #define HFSPLUS_SECTOR_SHIFT HFS_SECTOR_SIZE_BITS 70 #define HFSPLUS_VOLHEAD_SECTOR 2 71 #define HFSPLUS_MIN_VERSION 4 72 #define HFSPLUS_CURRENT_VERSION 5 73 74 #define HFS_NAMELEN 31 /* maximum length of an HFS filename */ 75 #define HFS_MAX_NAMELEN 128 76 77 #define HFSPLUS_MAX_STRLEN 255 78 #define HFSPLUS_ATTR_MAX_STRLEN 127 79 80 /* Meanings of the drAtrb field of the MDB, 81 * Reference: _Inside Macintosh: Files_ p. 2-61 82 */ 83 #define HFS_SB_ATTRIB_HLOCK (1 << 7) 84 #define HFS_SB_ATTRIB_UNMNT (1 << 8) 85 #define HFS_SB_ATTRIB_SPARED (1 << 9) 86 #define HFS_SB_ATTRIB_INCNSTNT (1 << 11) 87 #define HFS_SB_ATTRIB_SLOCK (1 << 15) 88 89 /* values for hfs_cat_rec.cdrType */ 90 #define HFS_CDR_DIR 0x01 /* folder (directory) */ 91 #define HFS_CDR_FIL 0x02 /* file */ 92 #define HFS_CDR_THD 0x03 /* folder (directory) thread */ 93 #define HFS_CDR_FTH 0x04 /* file thread */ 94 95 /* legal values for hfs_ext_key.FkType and hfs_file.fork */ 96 #define HFS_FK_DATA 0x00 97 #define HFS_FK_RSRC 0xFF 98 99 /* bits in hfs_fil_entry.Flags */ 100 #define HFS_FIL_LOCK 0x01 /* locked */ 101 #define HFS_FIL_THD 0x02 /* file thread */ 102 #define HFS_FIL_DOPEN 0x04 /* data fork open */ 103 #define HFS_FIL_ROPEN 0x08 /* resource fork open */ 104 #define HFS_FIL_DIR 0x10 /* directory (always clear) */ 105 #define HFS_FIL_NOCOPY 0x40 /* copy-protected file */ 106 #define HFS_FIL_USED 0x80 /* open */ 107 108 /* bits in hfs_dir_entry.Flags. dirflags is 16 bits. */ 109 #define HFS_DIR_LOCK 0x01 /* locked */ 110 #define HFS_DIR_THD 0x02 /* directory thread */ 111 #define HFS_DIR_INEXPFOLDER 0x04 /* in a shared area */ 112 #define HFS_DIR_MOUNTED 0x08 /* mounted */ 113 #define HFS_DIR_DIR 0x10 /* directory (always set) */ 114 #define HFS_DIR_EXPFOLDER 0x20 /* share point */ 115 116 /* bits hfs_finfo.fdFlags */ 117 #define HFS_FLG_INITED 0x0100 118 #define HFS_FLG_LOCKED 0x1000 119 #define HFS_FLG_INVISIBLE 0x4000 120 121 /* Some special File ID numbers */ 122 #define HFS_POR_CNID 1 /* Parent Of the Root */ 123 #define HFSPLUS_POR_CNID HFS_POR_CNID 124 #define HFS_ROOT_CNID 2 /* ROOT directory */ 125 #define HFSPLUS_ROOT_CNID HFS_ROOT_CNID 126 #define HFS_EXT_CNID 3 /* EXTents B-tree */ 127 #define HFSPLUS_EXT_CNID HFS_EXT_CNID 128 #define HFS_CAT_CNID 4 /* CATalog B-tree */ 129 #define HFSPLUS_CAT_CNID HFS_CAT_CNID 130 #define HFS_BAD_CNID 5 /* BAD blocks file */ 131 #define HFSPLUS_BAD_CNID HFS_BAD_CNID 132 #define HFS_ALLOC_CNID 6 /* ALLOCation file (HFS+) */ 133 #define HFSPLUS_ALLOC_CNID HFS_ALLOC_CNID 134 #define HFS_START_CNID 7 /* STARTup file (HFS+) */ 135 #define HFSPLUS_START_CNID HFS_START_CNID 136 #define HFS_ATTR_CNID 8 /* ATTRibutes file (HFS+) */ 137 #define HFSPLUS_ATTR_CNID HFS_ATTR_CNID 138 #define HFS_EXCH_CNID 15 /* ExchangeFiles temp id */ 139 #define HFSPLUS_EXCH_CNID HFS_EXCH_CNID 140 #define HFS_FIRSTUSER_CNID 16 /* first available user id */ 141 #define HFSPLUS_FIRSTUSER_CNID HFS_FIRSTUSER_CNID 142 143 /*======== HFS/HFS+ structures as they appear on the disk ========*/ 144 145 typedef __be32 hfsplus_cnid; 146 typedef __be16 hfsplus_unichr; 147 148 /* Pascal-style string of up to 31 characters */ 149 struct hfs_name { 150 u8 len; 151 u8 name[HFS_NAMELEN]; 152 } __packed; 153 154 /* A "string" as used in filenames, etc. */ 155 struct hfsplus_unistr { 156 __be16 length; 157 hfsplus_unichr unicode[HFSPLUS_MAX_STRLEN]; 158 } __packed; 159 160 /* 161 * A "string" is used in attributes file 162 * for name of extended attribute 163 */ 164 struct hfsplus_attr_unistr { 165 __be16 length; 166 hfsplus_unichr unicode[HFSPLUS_ATTR_MAX_STRLEN]; 167 } __packed; 168 169 enum { 170 HFS_REGULAR_NAME, 171 HFS_XATTR_NAME, 172 }; 173 174 struct hfs_extent { 175 __be16 block; 176 __be16 count; 177 }; 178 typedef struct hfs_extent hfs_extent_rec[3]; 179 180 /* A single contiguous area of a file */ 181 struct hfsplus_extent { 182 __be32 start_block; 183 __be32 block_count; 184 } __packed; 185 typedef struct hfsplus_extent hfsplus_extent_rec[8]; 186 187 /* Information for a "Fork" in a file */ 188 struct hfsplus_fork_raw { 189 __be64 total_size; 190 __be32 clump_size; 191 __be32 total_blocks; 192 hfsplus_extent_rec extents; 193 } __packed; 194 195 struct hfs_mdb { 196 __be16 drSigWord; /* Signature word indicating fs type */ 197 __be32 drCrDate; /* fs creation date/time */ 198 __be32 drLsMod; /* fs modification date/time */ 199 __be16 drAtrb; /* fs attributes */ 200 __be16 drNmFls; /* number of files in root directory */ 201 __be16 drVBMSt; /* location (in 512-byte blocks) 202 of the volume bitmap */ 203 __be16 drAllocPtr; /* location (in allocation blocks) 204 to begin next allocation search */ 205 __be16 drNmAlBlks; /* number of allocation blocks */ 206 __be32 drAlBlkSiz; /* bytes in an allocation block */ 207 __be32 drClpSiz; /* clumpsize, the number of bytes to 208 allocate when extending a file */ 209 __be16 drAlBlSt; /* location (in 512-byte blocks) 210 of the first allocation block */ 211 __be32 drNxtCNID; /* CNID to assign to the next 212 file or directory created */ 213 __be16 drFreeBks; /* number of free allocation blocks */ 214 u8 drVN[28]; /* the volume label */ 215 __be32 drVolBkUp; /* fs backup date/time */ 216 __be16 drVSeqNum; /* backup sequence number */ 217 __be32 drWrCnt; /* fs write count */ 218 __be32 drXTClpSiz; /* clumpsize for the extents B-tree */ 219 __be32 drCTClpSiz; /* clumpsize for the catalog B-tree */ 220 __be16 drNmRtDirs; /* number of directories in 221 the root directory */ 222 __be32 drFilCnt; /* number of files in the fs */ 223 __be32 drDirCnt; /* number of directories in the fs */ 224 u8 drFndrInfo[32]; /* data used by the Finder */ 225 __be16 drEmbedSigWord; /* embedded volume signature */ 226 __be32 drEmbedExtent; /* starting block number (xdrStABN) 227 and number of allocation blocks 228 (xdrNumABlks) occupied by embedded 229 volume */ 230 __be32 drXTFlSize; /* bytes in the extents B-tree */ 231 hfs_extent_rec drXTExtRec; /* extents B-tree's first 3 extents */ 232 __be32 drCTFlSize; /* bytes in the catalog B-tree */ 233 hfs_extent_rec drCTExtRec; /* catalog B-tree's first 3 extents */ 234 } __packed; 235 236 /* HFS+ Volume Header */ 237 struct hfsplus_vh { 238 __be16 signature; 239 __be16 version; 240 __be32 attributes; 241 __be32 last_mount_vers; 242 u32 reserved; 243 244 __be32 create_date; 245 __be32 modify_date; 246 __be32 backup_date; 247 __be32 checked_date; 248 249 __be32 file_count; 250 __be32 folder_count; 251 252 __be32 blocksize; 253 __be32 total_blocks; 254 __be32 free_blocks; 255 256 __be32 next_alloc; 257 __be32 rsrc_clump_sz; 258 __be32 data_clump_sz; 259 hfsplus_cnid next_cnid; 260 261 __be32 write_count; 262 __be64 encodings_bmp; 263 264 u32 finder_info[8]; 265 266 struct hfsplus_fork_raw alloc_file; 267 struct hfsplus_fork_raw ext_file; 268 struct hfsplus_fork_raw cat_file; 269 struct hfsplus_fork_raw attr_file; 270 struct hfsplus_fork_raw start_file; 271 } __packed; 272 273 /* HFS+ volume attributes */ 274 #define HFSPLUS_VOL_UNMNT (1 << 8) 275 #define HFSPLUS_VOL_SPARE_BLK (1 << 9) 276 #define HFSPLUS_VOL_NOCACHE (1 << 10) 277 #define HFSPLUS_VOL_INCNSTNT (1 << 11) 278 #define HFSPLUS_VOL_NODEID_REUSED (1 << 12) 279 #define HFSPLUS_VOL_JOURNALED (1 << 13) 280 #define HFSPLUS_VOL_SOFTLOCK (1 << 15) 281 #define HFSPLUS_VOL_UNUSED_NODE_FIX (1 << 31) 282 283 struct hfs_point { 284 __be16 v; 285 __be16 h; 286 } __packed; 287 288 typedef struct hfs_point hfsp_point; 289 290 struct hfs_rect { 291 __be16 top; 292 __be16 left; 293 __be16 bottom; 294 __be16 right; 295 } __packed; 296 297 typedef struct hfs_rect hfsp_rect; 298 299 struct hfs_finfo { 300 __be32 fdType; 301 __be32 fdCreator; 302 __be16 fdFlags; 303 struct hfs_point fdLocation; 304 __be16 fdFldr; 305 } __packed; 306 307 typedef struct hfs_finfo FInfo; 308 309 struct hfs_fxinfo { 310 __be16 fdIconID; 311 u8 fdUnused[8]; 312 __be16 fdComment; 313 __be32 fdPutAway; 314 } __packed; 315 316 typedef struct hfs_fxinfo FXInfo; 317 318 struct hfs_dinfo { 319 struct hfs_rect frRect; 320 __be16 frFlags; 321 struct hfs_point frLocation; 322 __be16 frView; 323 } __packed; 324 325 typedef struct hfs_dinfo DInfo; 326 327 struct hfs_dxinfo { 328 struct hfs_point frScroll; 329 __be32 frOpenChain; 330 __be16 frUnused; 331 __be16 frComment; 332 __be32 frPutAway; 333 } __packed; 334 335 typedef struct hfs_dxinfo DXInfo; 336 337 union hfs_finder_info { 338 struct { 339 struct hfs_finfo finfo; 340 struct hfs_fxinfo fxinfo; 341 } file; 342 struct { 343 struct hfs_dinfo dinfo; 344 struct hfs_dxinfo dxinfo; 345 } dir; 346 } __packed; 347 348 /* The key used in the catalog b-tree: */ 349 struct hfs_cat_key { 350 u8 key_len; /* number of bytes in the key */ 351 u8 reserved; /* padding */ 352 __be32 ParID; /* CNID of the parent dir */ 353 struct hfs_name CName; /* The filename of the entry */ 354 } __packed; 355 356 /* HFS+ catalog entry key */ 357 struct hfsplus_cat_key { 358 __be16 key_len; 359 hfsplus_cnid parent; 360 struct hfsplus_unistr name; 361 } __packed; 362 363 #define HFSPLUS_CAT_KEYLEN (sizeof(struct hfsplus_cat_key)) 364 365 /* The key used in the extents b-tree: */ 366 struct hfs_ext_key { 367 u8 key_len; /* number of bytes in the key */ 368 u8 FkType; /* HFS_FK_{DATA,RSRC} */ 369 __be32 FNum; /* The File ID of the file */ 370 __be16 FABN; /* allocation blocks number*/ 371 } __packed; 372 373 /* HFS+ extents tree key */ 374 struct hfsplus_ext_key { 375 __be16 key_len; 376 u8 fork_type; 377 u8 pad; 378 hfsplus_cnid cnid; 379 __be32 start_block; 380 } __packed; 381 382 #define HFSPLUS_EXT_KEYLEN sizeof(struct hfsplus_ext_key) 383 384 typedef union hfs_btree_key { 385 u8 key_len; /* number of bytes in the key */ 386 struct hfs_cat_key cat; 387 struct hfs_ext_key ext; 388 } hfs_btree_key; 389 390 #define HFS_MAX_CAT_KEYLEN (sizeof(struct hfs_cat_key) - sizeof(u8)) 391 #define HFS_MAX_EXT_KEYLEN (sizeof(struct hfs_ext_key) - sizeof(u8)) 392 393 typedef union hfs_btree_key btree_key; 394 395 /* The catalog record for a file */ 396 struct hfs_cat_file { 397 s8 type; /* The type of entry */ 398 u8 reserved; 399 u8 Flags; /* Flags such as read-only */ 400 s8 Typ; /* file version number = 0 */ 401 struct hfs_finfo UsrWds; /* data used by the Finder */ 402 __be32 FlNum; /* The CNID */ 403 __be16 StBlk; /* obsolete */ 404 __be32 LgLen; /* The logical EOF of the data fork*/ 405 __be32 PyLen; /* The physical EOF of the data fork */ 406 __be16 RStBlk; /* obsolete */ 407 __be32 RLgLen; /* The logical EOF of the rsrc fork */ 408 __be32 RPyLen; /* The physical EOF of the rsrc fork */ 409 __be32 CrDat; /* The creation date */ 410 __be32 MdDat; /* The modified date */ 411 __be32 BkDat; /* The last backup date */ 412 struct hfs_fxinfo FndrInfo; /* more data for the Finder */ 413 __be16 ClpSize; /* number of bytes to allocate 414 when extending files */ 415 hfs_extent_rec ExtRec; /* first extent record 416 for the data fork */ 417 hfs_extent_rec RExtRec; /* first extent record 418 for the resource fork */ 419 u32 Resrv; /* reserved by Apple */ 420 } __packed; 421 422 /* the catalog record for a directory */ 423 struct hfs_cat_dir { 424 s8 type; /* The type of entry */ 425 u8 reserved; 426 __be16 Flags; /* flags */ 427 __be16 Val; /* Valence: number of files and 428 dirs in the directory */ 429 __be32 DirID; /* The CNID */ 430 __be32 CrDat; /* The creation date */ 431 __be32 MdDat; /* The modification date */ 432 __be32 BkDat; /* The last backup date */ 433 struct hfs_dinfo UsrInfo; /* data used by the Finder */ 434 struct hfs_dxinfo FndrInfo; /* more data used by Finder */ 435 u8 Resrv[16]; /* reserved by Apple */ 436 } __packed; 437 438 /* the catalog record for a thread */ 439 struct hfs_cat_thread { 440 s8 type; /* The type of entry */ 441 u8 reserved[9]; /* reserved by Apple */ 442 __be32 ParID; /* CNID of parent directory */ 443 struct hfs_name CName; /* The name of this entry */ 444 } __packed; 445 446 /* A catalog tree record */ 447 typedef union hfs_cat_rec { 448 s8 type; /* The type of entry */ 449 struct hfs_cat_file file; 450 struct hfs_cat_dir dir; 451 struct hfs_cat_thread thread; 452 } hfs_cat_rec; 453 454 /* POSIX permissions */ 455 struct hfsplus_perm { 456 __be32 owner; 457 __be32 group; 458 u8 rootflags; 459 u8 userflags; 460 __be16 mode; 461 __be32 dev; 462 } __packed; 463 464 #define HFSPLUS_FLG_NODUMP 0x01 465 #define HFSPLUS_FLG_IMMUTABLE 0x02 466 #define HFSPLUS_FLG_APPEND 0x04 467 468 /* HFS/HFS+ BTree node descriptor */ 469 struct hfs_bnode_desc { 470 __be32 next; /* (V) Number of the next node at this level */ 471 __be32 prev; /* (V) Number of the prev node at this level */ 472 u8 type; /* (F) The type of node */ 473 u8 height; /* (F) The level of this node (leaves=1) */ 474 __be16 num_recs; /* (V) The number of records in this node */ 475 u16 reserved; 476 } __packed; 477 478 /* HFS/HFS+ BTree node types */ 479 #define HFS_NODE_INDEX 0x00 /* An internal (index) node */ 480 #define HFS_NODE_HEADER 0x01 /* The tree header node (node 0) */ 481 #define HFS_NODE_MAP 0x02 /* Holds part of the bitmap of used nodes */ 482 #define HFS_NODE_LEAF 0xFF /* A leaf (ndNHeight==1) node */ 483 484 /* HFS/HFS+ BTree header */ 485 struct hfs_btree_header_rec { 486 __be16 depth; /* (V) The number of levels in this B-tree */ 487 __be32 root; /* (V) The node number of the root node */ 488 __be32 leaf_count; /* (V) The number of leaf records */ 489 __be32 leaf_head; /* (V) The number of the first leaf node */ 490 __be32 leaf_tail; /* (V) The number of the last leaf node */ 491 __be16 node_size; /* (F) The number of bytes in a node (=512) */ 492 __be16 max_key_len; /* (F) The length of a key in an index node */ 493 __be32 node_count; /* (V) The total number of nodes */ 494 __be32 free_nodes; /* (V) The number of unused nodes */ 495 u16 reserved1; 496 __be32 clump_size; /* (F) clump size. not usually used. */ 497 u8 btree_type; /* (F) BTree type */ 498 u8 key_type; 499 __be32 attributes; /* (F) attributes */ 500 u32 reserved3[16]; 501 } __packed; 502 503 /* BTree attributes */ 504 #define BTREE_ATTR_BADCLOSE 0x00000001 /* b-tree not closed properly. not 505 used by hfsplus. */ 506 #define HFS_TREE_BIGKEYS 0x00000002 /* key length is u16 instead of u8. 507 used by hfsplus. */ 508 #define HFS_TREE_VARIDXKEYS 0x00000004 /* variable key length instead of 509 max key length. use din catalog 510 b-tree but not in extents 511 b-tree (hfsplus). */ 512 513 /* HFS+ BTree misc info */ 514 #define HFSPLUS_TREE_HEAD 0 515 #define HFSPLUS_NODE_MXSZ 32768 516 #define HFSPLUS_ATTR_TREE_NODE_SIZE 8192 517 #define HFSPLUS_BTREE_HDR_NODE_RECS_COUNT 3 518 #define HFSPLUS_BTREE_HDR_MAP_REC_INDEX 2 /* Map (bitmap) record in Header node */ 519 #define HFSPLUS_BTREE_MAP_NODE_REC_INDEX 0 /* Map record in Map Node */ 520 #define HFSPLUS_BTREE_HDR_USER_BYTES 128 521 #define HFSPLUS_BTREE_MAP_NODE_RECS_COUNT 2 522 #define HFSPLUS_BTREE_MAP_NODE_RESERVED_BYTES 2 523 524 /* btree key type */ 525 #define HFSPLUS_KEY_CASEFOLDING 0xCF /* case-insensitive */ 526 #define HFSPLUS_KEY_BINARY 0xBC /* case-sensitive */ 527 528 /* HFS+ folder data (part of an hfsplus_cat_entry) */ 529 struct hfsplus_cat_folder { 530 __be16 type; 531 __be16 flags; 532 __be32 valence; 533 hfsplus_cnid id; 534 __be32 create_date; 535 __be32 content_mod_date; 536 __be32 attribute_mod_date; 537 __be32 access_date; 538 __be32 backup_date; 539 struct hfsplus_perm permissions; 540 struct_group_attr(info, __packed, 541 DInfo user_info; 542 DXInfo finder_info; 543 ); 544 __be32 text_encoding; 545 __be32 subfolders; /* Subfolder count in HFSX. Reserved in HFS+. */ 546 } __packed; 547 548 /* HFS+ file data (part of a cat_entry) */ 549 struct hfsplus_cat_file { 550 __be16 type; 551 __be16 flags; 552 u32 reserved1; 553 hfsplus_cnid id; 554 __be32 create_date; 555 __be32 content_mod_date; 556 __be32 attribute_mod_date; 557 __be32 access_date; 558 __be32 backup_date; 559 struct hfsplus_perm permissions; 560 struct_group_attr(info, __packed, 561 FInfo user_info; 562 FXInfo finder_info; 563 ); 564 __be32 text_encoding; 565 u32 reserved2; 566 567 struct hfsplus_fork_raw data_fork; 568 struct hfsplus_fork_raw rsrc_fork; 569 } __packed; 570 571 /* File and folder flag bits */ 572 #define HFSPLUS_FILE_LOCKED 0x0001 573 #define HFSPLUS_FILE_THREAD_EXISTS 0x0002 574 #define HFSPLUS_XATTR_EXISTS 0x0004 575 #define HFSPLUS_ACL_EXISTS 0x0008 576 #define HFSPLUS_HAS_FOLDER_COUNT 0x0010 /* Folder has subfolder count 577 * (HFSX only) */ 578 579 /* HFS+ catalog thread (part of a cat_entry) */ 580 struct hfsplus_cat_thread { 581 __be16 type; 582 s16 reserved; 583 hfsplus_cnid parentID; 584 struct hfsplus_unistr nodeName; 585 } __packed; 586 587 #define HFSPLUS_MIN_THREAD_SZ 10 588 589 /* A data record in the catalog tree */ 590 typedef union { 591 __be16 type; 592 struct hfsplus_cat_folder folder; 593 struct hfsplus_cat_file file; 594 struct hfsplus_cat_thread thread; 595 } __packed hfsplus_cat_entry; 596 597 /* HFS+ catalog entry type */ 598 #define HFSPLUS_FOLDER 0x0001 599 #define HFSPLUS_FILE 0x0002 600 #define HFSPLUS_FOLDER_THREAD 0x0003 601 #define HFSPLUS_FILE_THREAD 0x0004 602 603 #define HFSPLUS_XATTR_FINDER_INFO_NAME "com.apple.FinderInfo" 604 #define HFSPLUS_XATTR_ACL_NAME "com.apple.system.Security" 605 606 #define HFSPLUS_ATTR_INLINE_DATA 0x10 607 #define HFSPLUS_ATTR_FORK_DATA 0x20 608 #define HFSPLUS_ATTR_EXTENTS 0x30 609 610 /* HFS+ attributes tree key */ 611 struct hfsplus_attr_key { 612 __be16 key_len; 613 __be16 pad; 614 hfsplus_cnid cnid; 615 __be32 start_block; 616 struct hfsplus_attr_unistr key_name; 617 } __packed; 618 619 #define HFSPLUS_ATTR_KEYLEN sizeof(struct hfsplus_attr_key) 620 621 /* HFS+ fork data attribute */ 622 struct hfsplus_attr_fork_data { 623 __be32 record_type; 624 __be32 reserved; 625 struct hfsplus_fork_raw the_fork; 626 } __packed; 627 628 /* HFS+ extension attribute */ 629 struct hfsplus_attr_extents { 630 __be32 record_type; 631 __be32 reserved; 632 struct hfsplus_extent extents; 633 } __packed; 634 635 #define HFSPLUS_MAX_INLINE_DATA_SIZE 3802 636 637 /* HFS+ attribute inline data */ 638 struct hfsplus_attr_inline_data { 639 __be32 record_type; 640 __be32 reserved1; 641 u8 reserved2[6]; 642 __be16 length; 643 u8 raw_bytes[HFSPLUS_MAX_INLINE_DATA_SIZE]; 644 } __packed; 645 646 /* A data record in the attributes tree */ 647 typedef union { 648 __be32 record_type; 649 struct hfsplus_attr_fork_data fork_data; 650 struct hfsplus_attr_extents extents; 651 struct hfsplus_attr_inline_data inline_data; 652 } __packed hfsplus_attr_entry; 653 654 /* HFS+ generic BTree key */ 655 typedef union { 656 __be16 key_len; 657 struct hfsplus_cat_key cat; 658 struct hfsplus_ext_key ext; 659 struct hfsplus_attr_key attr; 660 } __packed hfsplus_btree_key; 661 662 #endif /* _HFS_COMMON_H_ */ 663