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_VOLHEAD_SIGX 0x4858 26 #define HFSPLUS_SUPER_MAGIC 0x482b 27 #define HFSPLUS_MIN_VERSION 4 28 #define HFSPLUS_CURRENT_VERSION 5 29 30 #define HFSP_WRAP_MAGIC 0x4244 31 #define HFSP_WRAP_ATTRIB_SLOCK 0x8000 32 #define HFSP_WRAP_ATTRIB_SPARED 0x0200 33 34 #define HFSP_WRAPOFF_SIG 0x00 35 #define HFSP_WRAPOFF_ATTRIB 0x0A 36 #define HFSP_WRAPOFF_ABLKSIZE 0x14 37 #define HFSP_WRAPOFF_ABLKSTART 0x1C 38 #define HFSP_WRAPOFF_EMBEDSIG 0x7C 39 #define HFSP_WRAPOFF_EMBEDEXT 0x7E 40 41 #define HFSP_HIDDENDIR_NAME "\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 53 typedef __be32 hfsplus_cnid; 54 typedef __be16 hfsplus_unichr; 55 56 /* A "string" as used in filenames, etc. */ 57 struct hfsplus_unistr { 58 __be16 length; 59 hfsplus_unichr unicode[255]; 60 } __packed; 61 62 #define HFSPLUS_MAX_STRLEN 255 63 64 /* POSIX permissions */ 65 struct hfsplus_perm { 66 __be32 owner; 67 __be32 group; 68 u8 rootflags; 69 u8 userflags; 70 __be16 mode; 71 __be32 dev; 72 } __packed; 73 74 #define HFSPLUS_FLG_NODUMP 0x01 75 #define HFSPLUS_FLG_IMMUTABLE 0x02 76 #define HFSPLUS_FLG_APPEND 0x04 77 78 /* A single contiguous area of a file */ 79 struct hfsplus_extent { 80 __be32 start_block; 81 __be32 block_count; 82 } __packed; 83 typedef struct hfsplus_extent hfsplus_extent_rec[8]; 84 85 /* Information for a "Fork" in a file */ 86 struct hfsplus_fork_raw { 87 __be64 total_size; 88 __be32 clump_size; 89 __be32 total_blocks; 90 hfsplus_extent_rec extents; 91 } __packed; 92 93 /* HFS+ Volume Header */ 94 struct hfsplus_vh { 95 __be16 signature; 96 __be16 version; 97 __be32 attributes; 98 __be32 last_mount_vers; 99 u32 reserved; 100 101 __be32 create_date; 102 __be32 modify_date; 103 __be32 backup_date; 104 __be32 checked_date; 105 106 __be32 file_count; 107 __be32 folder_count; 108 109 __be32 blocksize; 110 __be32 total_blocks; 111 __be32 free_blocks; 112 113 __be32 next_alloc; 114 __be32 rsrc_clump_sz; 115 __be32 data_clump_sz; 116 hfsplus_cnid next_cnid; 117 118 __be32 write_count; 119 __be64 encodings_bmp; 120 121 u8 finder_info[32]; 122 123 struct hfsplus_fork_raw alloc_file; 124 struct hfsplus_fork_raw ext_file; 125 struct hfsplus_fork_raw cat_file; 126 struct hfsplus_fork_raw attr_file; 127 struct hfsplus_fork_raw start_file; 128 } __packed; 129 130 /* HFS+ volume attributes */ 131 #define HFSPLUS_VOL_UNMNT (1 << 8) 132 #define HFSPLUS_VOL_SPARE_BLK (1 << 9) 133 #define HFSPLUS_VOL_NOCACHE (1 << 10) 134 #define HFSPLUS_VOL_INCNSTNT (1 << 11) 135 #define HFSPLUS_VOL_NODEID_REUSED (1 << 12) 136 #define HFSPLUS_VOL_JOURNALED (1 << 13) 137 #define HFSPLUS_VOL_SOFTLOCK (1 << 15) 138 139 /* HFS+ BTree node descriptor */ 140 struct hfs_bnode_desc { 141 __be32 next; 142 __be32 prev; 143 s8 type; 144 u8 height; 145 __be16 num_recs; 146 u16 reserved; 147 } __packed; 148 149 /* HFS+ BTree node types */ 150 #define HFS_NODE_INDEX 0x00 151 #define HFS_NODE_HEADER 0x01 152 #define HFS_NODE_MAP 0x02 153 #define HFS_NODE_LEAF 0xFF 154 155 /* HFS+ BTree header */ 156 struct hfs_btree_header_rec { 157 __be16 depth; 158 __be32 root; 159 __be32 leaf_count; 160 __be32 leaf_head; 161 __be32 leaf_tail; 162 __be16 node_size; 163 __be16 max_key_len; 164 __be32 node_count; 165 __be32 free_nodes; 166 u16 reserved1; 167 __be32 clump_size; 168 u8 btree_type; 169 u8 key_type; 170 __be32 attributes; 171 u32 reserved3[16]; 172 } __packed; 173 174 /* BTree attributes */ 175 #define HFS_TREE_BIGKEYS 2 176 #define HFS_TREE_VARIDXKEYS 4 177 178 /* HFS+ BTree misc info */ 179 #define HFSPLUS_TREE_HEAD 0 180 #define HFSPLUS_NODE_MXSZ 32768 181 182 /* Some special File ID numbers (stolen from hfs.h) */ 183 #define HFSPLUS_POR_CNID 1 /* Parent Of the Root */ 184 #define HFSPLUS_ROOT_CNID 2 /* ROOT directory */ 185 #define HFSPLUS_EXT_CNID 3 /* EXTents B-tree */ 186 #define HFSPLUS_CAT_CNID 4 /* CATalog B-tree */ 187 #define HFSPLUS_BAD_CNID 5 /* BAD blocks file */ 188 #define HFSPLUS_ALLOC_CNID 6 /* ALLOCation file */ 189 #define HFSPLUS_START_CNID 7 /* STARTup file */ 190 #define HFSPLUS_ATTR_CNID 8 /* ATTRibutes file */ 191 #define HFSPLUS_EXCH_CNID 15 /* ExchangeFiles temp id */ 192 #define HFSPLUS_FIRSTUSER_CNID 16 /* first available user id */ 193 194 /* btree key type */ 195 #define HFSPLUS_KEY_CASEFOLDING 0xCF /* case-insensitive */ 196 #define HFSPLUS_KEY_BINARY 0xBC /* case-sensitive */ 197 198 /* HFS+ catalog entry key */ 199 struct hfsplus_cat_key { 200 __be16 key_len; 201 hfsplus_cnid parent; 202 struct hfsplus_unistr name; 203 } __packed; 204 205 206 /* Structs from hfs.h */ 207 struct hfsp_point { 208 __be16 v; 209 __be16 h; 210 } __packed; 211 212 struct hfsp_rect { 213 __be16 top; 214 __be16 left; 215 __be16 bottom; 216 __be16 right; 217 } __packed; 218 219 220 /* HFS directory info (stolen from hfs.h */ 221 struct DInfo { 222 struct hfsp_rect frRect; 223 __be16 frFlags; 224 struct hfsp_point frLocation; 225 __be16 frView; 226 } __packed; 227 228 struct DXInfo { 229 struct hfsp_point frScroll; 230 __be32 frOpenChain; 231 __be16 frUnused; 232 __be16 frComment; 233 __be32 frPutAway; 234 } __packed; 235 236 /* HFS+ folder data (part of an hfsplus_cat_entry) */ 237 struct hfsplus_cat_folder { 238 __be16 type; 239 __be16 flags; 240 __be32 valence; 241 hfsplus_cnid id; 242 __be32 create_date; 243 __be32 content_mod_date; 244 __be32 attribute_mod_date; 245 __be32 access_date; 246 __be32 backup_date; 247 struct hfsplus_perm permissions; 248 struct DInfo user_info; 249 struct DXInfo finder_info; 250 __be32 text_encoding; 251 u32 reserved; 252 } __packed; 253 254 /* HFS file info (stolen from hfs.h) */ 255 struct FInfo { 256 __be32 fdType; 257 __be32 fdCreator; 258 __be16 fdFlags; 259 struct hfsp_point fdLocation; 260 __be16 fdFldr; 261 } __packed; 262 263 struct FXInfo { 264 __be16 fdIconID; 265 u8 fdUnused[8]; 266 __be16 fdComment; 267 __be32 fdPutAway; 268 } __packed; 269 270 /* HFS+ file data (part of a cat_entry) */ 271 struct hfsplus_cat_file { 272 __be16 type; 273 __be16 flags; 274 u32 reserved1; 275 hfsplus_cnid id; 276 __be32 create_date; 277 __be32 content_mod_date; 278 __be32 attribute_mod_date; 279 __be32 access_date; 280 __be32 backup_date; 281 struct hfsplus_perm permissions; 282 struct FInfo user_info; 283 struct FXInfo finder_info; 284 __be32 text_encoding; 285 u32 reserved2; 286 287 struct hfsplus_fork_raw data_fork; 288 struct hfsplus_fork_raw rsrc_fork; 289 } __packed; 290 291 /* File attribute bits */ 292 #define HFSPLUS_FILE_LOCKED 0x0001 293 #define HFSPLUS_FILE_THREAD_EXISTS 0x0002 294 295 /* HFS+ catalog thread (part of a cat_entry) */ 296 struct hfsplus_cat_thread { 297 __be16 type; 298 s16 reserved; 299 hfsplus_cnid parentID; 300 struct hfsplus_unistr nodeName; 301 } __packed; 302 303 #define HFSPLUS_MIN_THREAD_SZ 10 304 305 /* A data record in the catalog tree */ 306 typedef union { 307 __be16 type; 308 struct hfsplus_cat_folder folder; 309 struct hfsplus_cat_file file; 310 struct hfsplus_cat_thread thread; 311 } __packed hfsplus_cat_entry; 312 313 /* HFS+ catalog entry type */ 314 #define HFSPLUS_FOLDER 0x0001 315 #define HFSPLUS_FILE 0x0002 316 #define HFSPLUS_FOLDER_THREAD 0x0003 317 #define HFSPLUS_FILE_THREAD 0x0004 318 319 /* HFS+ extents tree key */ 320 struct hfsplus_ext_key { 321 __be16 key_len; 322 u8 fork_type; 323 u8 pad; 324 hfsplus_cnid cnid; 325 __be32 start_block; 326 } __packed; 327 328 #define HFSPLUS_EXT_KEYLEN 12 329 330 /* HFS+ generic BTree key */ 331 typedef union { 332 __be16 key_len; 333 struct hfsplus_cat_key cat; 334 struct hfsplus_ext_key ext; 335 } __packed hfsplus_btree_key; 336 337 #endif 338