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 "\xe2\x90\x80\xe2\x90\x80\xe2\x90\x80\xe2\x90\x80HFS+ Private Data" 40 41 #define HFSP_HARDLINK_TYPE 0x686c6e6b /* 'hlnk' */ 42 #define HFSP_HFSPLUS_CREATOR 0x6866732b /* 'hfs+' */ 43 44 #define HFSP_SYMLINK_TYPE 0x736c6e6b /* 'slnk' */ 45 #define HFSP_SYMLINK_CREATOR 0x72686170 /* 'rhap' */ 46 47 #define HFSP_MOUNT_VERSION 0x482b4c78 /* 'H+Lx' */ 48 49 /* Structures used on disk */ 50 51 typedef __be32 hfsplus_cnid; 52 typedef __be16 hfsplus_unichr; 53 54 /* A "string" as used in filenames, etc. */ 55 struct hfsplus_unistr { 56 __be16 length; 57 hfsplus_unichr unicode[255]; 58 } __packed; 59 60 #define HFSPLUS_MAX_STRLEN 255 61 62 /* POSIX permissions */ 63 struct hfsplus_perm { 64 __be32 owner; 65 __be32 group; 66 u8 rootflags; 67 u8 userflags; 68 __be16 mode; 69 __be32 dev; 70 } __packed; 71 72 #define HFSPLUS_FLG_NODUMP 0x01 73 #define HFSPLUS_FLG_IMMUTABLE 0x02 74 #define HFSPLUS_FLG_APPEND 0x04 75 76 /* A single contiguous area of a file */ 77 struct hfsplus_extent { 78 __be32 start_block; 79 __be32 block_count; 80 } __packed; 81 typedef struct hfsplus_extent hfsplus_extent_rec[8]; 82 83 /* Information for a "Fork" in a file */ 84 struct hfsplus_fork_raw { 85 __be64 total_size; 86 __be32 clump_size; 87 __be32 total_blocks; 88 hfsplus_extent_rec extents; 89 } __packed; 90 91 /* HFS+ Volume Header */ 92 struct hfsplus_vh { 93 __be16 signature; 94 __be16 version; 95 __be32 attributes; 96 __be32 last_mount_vers; 97 u32 reserved; 98 99 __be32 create_date; 100 __be32 modify_date; 101 __be32 backup_date; 102 __be32 checked_date; 103 104 __be32 file_count; 105 __be32 folder_count; 106 107 __be32 blocksize; 108 __be32 total_blocks; 109 __be32 free_blocks; 110 111 __be32 next_alloc; 112 __be32 rsrc_clump_sz; 113 __be32 data_clump_sz; 114 hfsplus_cnid next_cnid; 115 116 __be32 write_count; 117 __be64 encodings_bmp; 118 119 u8 finder_info[32]; 120 121 struct hfsplus_fork_raw alloc_file; 122 struct hfsplus_fork_raw ext_file; 123 struct hfsplus_fork_raw cat_file; 124 struct hfsplus_fork_raw attr_file; 125 struct hfsplus_fork_raw start_file; 126 } __packed; 127 128 /* HFS+ volume attributes */ 129 #define HFSPLUS_VOL_UNMNT (1 << 8) 130 #define HFSPLUS_VOL_SPARE_BLK (1 << 9) 131 #define HFSPLUS_VOL_NOCACHE (1 << 10) 132 #define HFSPLUS_VOL_INCNSTNT (1 << 11) 133 #define HFSPLUS_VOL_NODEID_REUSED (1 << 12) 134 #define HFSPLUS_VOL_JOURNALED (1 << 13) 135 #define HFSPLUS_VOL_SOFTLOCK (1 << 15) 136 137 /* HFS+ BTree node descriptor */ 138 struct hfs_bnode_desc { 139 __be32 next; 140 __be32 prev; 141 s8 type; 142 u8 height; 143 __be16 num_recs; 144 u16 reserved; 145 } __packed; 146 147 /* HFS+ BTree node types */ 148 #define HFS_NODE_INDEX 0x00 149 #define HFS_NODE_HEADER 0x01 150 #define HFS_NODE_MAP 0x02 151 #define HFS_NODE_LEAF 0xFF 152 153 /* HFS+ BTree header */ 154 struct hfs_btree_header_rec { 155 __be16 depth; 156 __be32 root; 157 __be32 leaf_count; 158 __be32 leaf_head; 159 __be32 leaf_tail; 160 __be16 node_size; 161 __be16 max_key_len; 162 __be32 node_count; 163 __be32 free_nodes; 164 u16 reserved1; 165 __be32 clump_size; 166 u8 btree_type; 167 u8 key_type; 168 __be32 attributes; 169 u32 reserved3[16]; 170 } __packed; 171 172 /* BTree attributes */ 173 #define HFS_TREE_BIGKEYS 2 174 #define HFS_TREE_VARIDXKEYS 4 175 176 /* HFS+ BTree misc info */ 177 #define HFSPLUS_TREE_HEAD 0 178 #define HFSPLUS_NODE_MXSZ 32768 179 180 /* Some special File ID numbers (stolen from hfs.h) */ 181 #define HFSPLUS_POR_CNID 1 /* Parent Of the Root */ 182 #define HFSPLUS_ROOT_CNID 2 /* ROOT directory */ 183 #define HFSPLUS_EXT_CNID 3 /* EXTents B-tree */ 184 #define HFSPLUS_CAT_CNID 4 /* CATalog B-tree */ 185 #define HFSPLUS_BAD_CNID 5 /* BAD blocks file */ 186 #define HFSPLUS_ALLOC_CNID 6 /* ALLOCation file */ 187 #define HFSPLUS_START_CNID 7 /* STARTup file */ 188 #define HFSPLUS_ATTR_CNID 8 /* ATTRibutes file */ 189 #define HFSPLUS_EXCH_CNID 15 /* ExchangeFiles temp id */ 190 #define HFSPLUS_FIRSTUSER_CNID 16 /* first available user id */ 191 192 /* btree key type */ 193 #define HFSPLUS_KEY_CASEFOLDING 0xCF /* case-insensitive */ 194 #define HFSPLUS_KEY_BINARY 0xBC /* case-sensitive */ 195 196 /* HFS+ catalog entry key */ 197 struct hfsplus_cat_key { 198 __be16 key_len; 199 hfsplus_cnid parent; 200 struct hfsplus_unistr name; 201 } __packed; 202 203 #define HFSPLUS_CAT_KEYLEN (sizeof(struct hfsplus_cat_key)) 204 205 /* Structs from hfs.h */ 206 struct hfsp_point { 207 __be16 v; 208 __be16 h; 209 } __packed; 210 211 struct hfsp_rect { 212 __be16 top; 213 __be16 left; 214 __be16 bottom; 215 __be16 right; 216 } __packed; 217 218 219 /* HFS directory info (stolen from hfs.h */ 220 struct DInfo { 221 struct hfsp_rect frRect; 222 __be16 frFlags; 223 struct hfsp_point frLocation; 224 __be16 frView; 225 } __packed; 226 227 struct DXInfo { 228 struct hfsp_point frScroll; 229 __be32 frOpenChain; 230 __be16 frUnused; 231 __be16 frComment; 232 __be32 frPutAway; 233 } __packed; 234 235 /* HFS+ folder data (part of an hfsplus_cat_entry) */ 236 struct hfsplus_cat_folder { 237 __be16 type; 238 __be16 flags; 239 __be32 valence; 240 hfsplus_cnid id; 241 __be32 create_date; 242 __be32 content_mod_date; 243 __be32 attribute_mod_date; 244 __be32 access_date; 245 __be32 backup_date; 246 struct hfsplus_perm permissions; 247 struct DInfo user_info; 248 struct DXInfo finder_info; 249 __be32 text_encoding; 250 u32 reserved; 251 } __packed; 252 253 /* HFS file info (stolen from hfs.h) */ 254 struct FInfo { 255 __be32 fdType; 256 __be32 fdCreator; 257 __be16 fdFlags; 258 struct hfsp_point fdLocation; 259 __be16 fdFldr; 260 } __packed; 261 262 struct FXInfo { 263 __be16 fdIconID; 264 u8 fdUnused[8]; 265 __be16 fdComment; 266 __be32 fdPutAway; 267 } __packed; 268 269 /* HFS+ file data (part of a cat_entry) */ 270 struct hfsplus_cat_file { 271 __be16 type; 272 __be16 flags; 273 u32 reserved1; 274 hfsplus_cnid id; 275 __be32 create_date; 276 __be32 content_mod_date; 277 __be32 attribute_mod_date; 278 __be32 access_date; 279 __be32 backup_date; 280 struct hfsplus_perm permissions; 281 struct FInfo user_info; 282 struct FXInfo finder_info; 283 __be32 text_encoding; 284 u32 reserved2; 285 286 struct hfsplus_fork_raw data_fork; 287 struct hfsplus_fork_raw rsrc_fork; 288 } __packed; 289 290 /* File attribute bits */ 291 #define HFSPLUS_FILE_LOCKED 0x0001 292 #define HFSPLUS_FILE_THREAD_EXISTS 0x0002 293 294 /* HFS+ catalog thread (part of a cat_entry) */ 295 struct hfsplus_cat_thread { 296 __be16 type; 297 s16 reserved; 298 hfsplus_cnid parentID; 299 struct hfsplus_unistr nodeName; 300 } __packed; 301 302 #define HFSPLUS_MIN_THREAD_SZ 10 303 304 /* A data record in the catalog tree */ 305 typedef union { 306 __be16 type; 307 struct hfsplus_cat_folder folder; 308 struct hfsplus_cat_file file; 309 struct hfsplus_cat_thread thread; 310 } __packed hfsplus_cat_entry; 311 312 /* HFS+ catalog entry type */ 313 #define HFSPLUS_FOLDER 0x0001 314 #define HFSPLUS_FILE 0x0002 315 #define HFSPLUS_FOLDER_THREAD 0x0003 316 #define HFSPLUS_FILE_THREAD 0x0004 317 318 /* HFS+ extents tree key */ 319 struct hfsplus_ext_key { 320 __be16 key_len; 321 u8 fork_type; 322 u8 pad; 323 hfsplus_cnid cnid; 324 __be32 start_block; 325 } __packed; 326 327 #define HFSPLUS_EXT_KEYLEN sizeof(struct hfsplus_ext_key) 328 329 /* HFS+ generic BTree key */ 330 typedef union { 331 __be16 key_len; 332 struct hfsplus_cat_key cat; 333 struct hfsplus_ext_key ext; 334 } __packed hfsplus_btree_key; 335 336 #endif 337