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1.1 ! root 1: /* ! 2: * Copyright (c) 1999 Apple Computer, Inc. All rights reserved. ! 3: * ! 4: * @APPLE_LICENSE_HEADER_START@ ! 5: * ! 6: * Portions Copyright (c) 1999 Apple Computer, Inc. All Rights ! 7: * Reserved. This file contains Original Code and/or Modifications of ! 8: * Original Code as defined in and that are subject to the Apple Public ! 9: * Source License Version 1.1 (the "License"). You may not use this file ! 10: * except in compliance with the License. Please obtain a copy of the ! 11: * License at http://www.apple.com/publicsource and read it before using ! 12: * this file. ! 13: * ! 14: * The Original Code and all software distributed under the License are ! 15: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER ! 16: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, ! 17: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, ! 18: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the ! 19: * License for the specific language governing rights and limitations ! 20: * under the License. ! 21: * ! 22: * @APPLE_LICENSE_HEADER_END@ ! 23: */ ! 24: ! 25: /* ! 26: File: HFSVolumes.h ! 27: ! 28: Contains: On-disk data structures for HFS and HFS Plus volumes. ! 29: ! 30: Version: Mac OS 8.1 ! 31: ! 32: Copyright: � 1984-1998 by Apple Computer, Inc. All rights reserved. ! 33: ! 34: File Ownership: ! 35: ! 36: DRI: Mark Day ! 37: ! 38: Other Contacts: Deric Horn ! 39: ! 40: Technology: File Systems ! 41: ! 42: Writers: ! 43: ! 44: (ngk) Nick Kledzik ! 45: (gap) george puckett ! 46: (djb) Don Brady ! 47: (msd) Mark Day ! 48: (DSH) Deric Horn ! 49: ! 50: Change History (most recent first): ! 51: ! 52: From HFSVolumes.i: ! 53: ! 54: <Rhap> 4/9/98 djb Use a different kHFSPlusMountVersion for Rhapsody. ! 55: ! 56: <2> 2/12/98 ngk Clean up: add version field in this header, change Types.i to ! 57: MacTypes.i, remove pragma comments, remove unnecesarry typedef ! 58: struct Foo Foo statements. ! 59: <1> 2/9/98 msd first checked in ! 60: <0> 2/5/98 msd Imported from HFSVolumesPriv.i. Added "HFS" to many names. ! 61: Added reserved field to HFSPlusAttrInlineData. ! 62: ! 63: From HFSVolumesPriv.i: ! 64: ! 65: <CS19> 11/16/97 djb Bump volume format version for Unicode changes. ! 66: <CS18> 10/23/97 msd Bug 1685113. Change kHFSPlusMountVersion to '8.10' to trigger ! 67: MountCheck; it also happens to be a more correct value. ! 68: <CS17> 10/19/97 msd Bug 1684586. Rename modifyDate to attributeModDate. GetCatInfo ! 69: and SetCatInfo use only contentModDate. ! 70: <CS16> 9/19/97 msd Fix bug 1679778. In the LargeCatalogFile structure, change the ! 71: name of the linkCount field to "reserved1" since we no longer ! 72: support hard links. ! 73: <CS15> 9/10/97 msd Make sure fork and extent information is 8-byte aligned in ! 74: attribute records. ! 75: <CS14> 9/4/97 msd Attributes are now identified by a single Unicode string (flags ! 76: and OSTypes are gone), and may have extents (allowing them to be ! 77: very large). Removed C define of bitmapFile. Removed ! 78: kVolumeHardLinksBit. Added field lastMountedVersion to ! 79: VolumeHeader; moved unused space near start of structure to make ! 80: following fields nicely aligned. LargeExtentKey's keyLength is ! 81: now a UInt16, like all the rest of the HFS Plus B-Trees. Change ! 82: kHFSPlusVersion to $0003. ! 83: <CS13> 9/2/97 DSH Moved the VolumeHeader to sector 2 of HFS+ partition, bumped ! 84: kHFSPlusVersion to 0X0002. ! 85: <CS12> 8/5/97 msd Change kHFSPlusSigWord to $482B ('H+'). Add enum for ! 86: kHFSPlusVersion (set to $0001). ! 87: <CS11> 6/24/97 djb Add link count to HFS Plus file record. Add kVolumeHardLinksBit. ! 88: <CS10> 6/20/97 msd Remove the define for contentModDate. ! 89: <CS9> 6/12/97 djb Removed rootFileCount and rootFolderCount. Added new dates, ! 90: permissions, and encodingBitmap, changed signature to "D8". ! 91: <CS8> 6/6/97 djb Removed enum names and #pragma enumsalwaysint. ! 92: <CS7> 6/4/97 gap Removed ForBride conditional. Caused problem in ! 93: HFSVolumesPriv.a. ! 94: <CS6> 6/4/97 gap Add #pragma enumsalwaysint so file will work with latest ! 95: Interfacer tool in Bride build. ! 96: <CS5> 5/30/97 djb Add constants for minimum key lengths. ! 97: <CS4> 5/28/97 msd Add AttributeKey and associated enums. ! 98: <CS3> 5/20/97 DSH Keep sigWord in sync with last build, D5. ! 99: <CS2> 5/15/97 msd Key length and fork type for extent records should be unsigned. ! 100: <CS1> 4/28/97 djb first checked in ! 101: ! 102: <HFS7> 4/7/97 msd Add FileID for attributes BTree. ! 103: <HFS6> 4/4/97 djb Major update to HFS Plus structures. ! 104: <HFS5> 3/17/97 DSH Adding kNumHFSPlusExtents, and kNumHFSExtents. ! 105: <HFS4> 2/19/97 djb Latest HFS Plus format changes. Removed B-Tree Manager data ! 106: structures since they're defined in BTreesPrivate.h. ! 107: <HFS3> 2/13/97 msd Add unions for extent key and data. ! 108: <HFS2> 1/16/97 djb Changed kLargeExtentKeyMaximumLength to 11. ! 109: <HFS1> 1/9/97 djb first checked in ! 110: <0> 1/7/97 djb Converted from HFSVolumePriv.h file. ! 111: */ ! 112: #ifndef __HFSVOLUMES__ ! 113: #define __HFSVOLUMES__ ! 114: ! 115: #if TARGET_OS_MAC ! 116: #ifndef __MACTYPES__ ! 117: #include <MacTypes.h> ! 118: #endif ! 119: #ifndef __FILES__ ! 120: #include <Files.h> ! 121: #endif ! 122: #ifndef __FINDER__ ! 123: #include <Finder.h> ! 124: #endif ! 125: #endif /* TARGET_OS_MAC */ ! 126: ! 127: #if TARGET_OS_RHAPSODY ! 128: #ifndef __MACOSTYPES__ ! 129: #include <MacOSTypes.h> ! 130: #endif ! 131: #ifndef __MACOSSTUBS__ ! 132: #include <MacOSStubs.h> ! 133: #endif ! 134: #endif /* TARGET_OS_RHAPSODY */ ! 135: ! 136: ! 137: #if PRAGMA_ONCE ! 138: #pragma once ! 139: #endif ! 140: ! 141: #ifdef __cplusplus ! 142: extern "C" { ! 143: #endif ! 144: ! 145: #if PRAGMA_IMPORT ! 146: #pragma import on ! 147: #endif ! 148: ! 149: #if PRAGMA_STRUCT_ALIGN ! 150: #pragma options align=mac68k ! 151: #elif PRAGMA_STRUCT_PACKPUSH ! 152: #pragma pack(push, 2) ! 153: #elif PRAGMA_STRUCT_PACK ! 154: #pragma pack(2) ! 155: #endif ! 156: ! 157: /* Signatures used to differentiate between HFS and HFS Plus volumes */ ! 158: ! 159: enum { ! 160: kHFSSigWord = 0x4244, /* 'BD' in ASCII */ ! 161: kHFSPlusSigWord = 0x482B, /* 'H+' in ASCII */ ! 162: kHFSPlusVersion = 0x0004, /* will change as format changes (version 4 shipped with Mac OS 8.1) */ ! 163: ! 164: #if TARGET_OS_MAC ! 165: kHFSPlusMountVersion = FOUR_CHAR_CODE('8.10') /* will change as implementations change ('8.10' in Mac OS 8.1) */ ! 166: #endif ! 167: ! 168: #if TARGET_OS_RHAPSODY ! 169: kHFSPlusMountVersion = FOUR_CHAR_CODE('9.00') /* will change as implementations change */ ! 170: #endif ! 171: ! 172: ! 173: }; ! 174: ! 175: ! 176: /* CatalogNodeID is used to track catalog objects */ ! 177: typedef UInt32 HFSCatalogNodeID; ! 178: /* Unicode strings are used for file and folder names (HFS Plus only) */ ! 179: ! 180: struct HFSUniStr255 { ! 181: UInt16 length; /* number of unicode characters */ ! 182: UniChar unicode[255]; /* unicode characters */ ! 183: }; ! 184: typedef struct HFSUniStr255 HFSUniStr255; ! 185: ! 186: typedef const HFSUniStr255 * ConstHFSUniStr255Param; ! 187: ! 188: enum { ! 189: kHFSMaxVolumeNameChars = 27, ! 190: kHFSMaxFileNameChars = 31, ! 191: kHFSPlusMaxFileNameChars = 255 ! 192: }; ! 193: ! 194: ! 195: /* Extent overflow file data structures */ ! 196: /* HFS Extent key */ ! 197: ! 198: struct HFSExtentKey { ! 199: UInt8 keyLength; /* length of key, excluding this field */ ! 200: UInt8 forkType; /* 0 = data fork, FF = resource fork */ ! 201: HFSCatalogNodeID fileID; /* file ID */ ! 202: UInt16 startBlock; /* first file allocation block number in this extent */ ! 203: }; ! 204: typedef struct HFSExtentKey HFSExtentKey; ! 205: /* HFS Plus Extent key */ ! 206: ! 207: struct HFSPlusExtentKey { ! 208: UInt16 keyLength; /* length of key, excluding this field */ ! 209: UInt8 forkType; /* 0 = data fork, FF = resource fork */ ! 210: UInt8 pad; /* make the other fields align on 32-bit boundary */ ! 211: HFSCatalogNodeID fileID; /* file ID */ ! 212: UInt32 startBlock; /* first file allocation block number in this extent */ ! 213: }; ! 214: typedef struct HFSPlusExtentKey HFSPlusExtentKey; ! 215: /* Number of extent descriptors per extent record */ ! 216: ! 217: enum { ! 218: kHFSExtentDensity = 3, ! 219: kHFSPlusExtentDensity = 8 ! 220: }; ! 221: ! 222: /* HFS extent descriptor */ ! 223: ! 224: struct HFSExtentDescriptor { ! 225: UInt16 startBlock; /* first allocation block */ ! 226: UInt16 blockCount; /* number of allocation blocks */ ! 227: }; ! 228: typedef struct HFSExtentDescriptor HFSExtentDescriptor; ! 229: /* HFS Plus extent descriptor */ ! 230: ! 231: struct HFSPlusExtentDescriptor { ! 232: UInt32 startBlock; /* first allocation block */ ! 233: UInt32 blockCount; /* number of allocation blocks */ ! 234: }; ! 235: typedef struct HFSPlusExtentDescriptor HFSPlusExtentDescriptor; ! 236: /* HFS extent record */ ! 237: ! 238: typedef HFSExtentDescriptor HFSExtentRecord[3]; ! 239: /* HFS Plus extent record */ ! 240: typedef HFSPlusExtentDescriptor HFSPlusExtentRecord[8]; ! 241: ! 242: /* Fork data info (HFS Plus only) - 80 bytes */ ! 243: ! 244: struct HFSPlusForkData { ! 245: UInt64 logicalSize; /* fork's logical size in bytes */ ! 246: UInt32 clumpSize; /* fork's clump size in bytes */ ! 247: UInt32 totalBlocks; /* total blocks used by this fork */ ! 248: HFSPlusExtentRecord extents; /* initial set of extents */ ! 249: }; ! 250: typedef struct HFSPlusForkData HFSPlusForkData; ! 251: /* Permissions info (HFS Plus only) - 16 bytes */ ! 252: ! 253: struct HFSPlusPermissions { ! 254: UInt32 ownerID; /* user or group ID of file/folder owner */ ! 255: UInt32 groupID; /* additional user of group ID */ ! 256: UInt32 permissions; /* permissions (bytes: unused, owner, group, everyone) */ ! 257: UInt32 specialDevice; /* UNIX: device for character or block special file */ ! 258: }; ! 259: typedef struct HFSPlusPermissions HFSPlusPermissions; ! 260: /* Catalog file data structures */ ! 261: ! 262: enum { ! 263: kHFSRootParentID = 1, /* Parent ID of the root folder */ ! 264: kHFSRootFolderID = 2, /* Folder ID of the root folder */ ! 265: kHFSExtentsFileID = 3, /* File ID of the extents file */ ! 266: kHFSCatalogFileID = 4, /* File ID of the catalog file */ ! 267: kHFSBadBlockFileID = 5, /* File ID of the bad allocation block file */ ! 268: kHFSAllocationFileID = 6, /* File ID of the allocation file (HFS Plus only) */ ! 269: kHFSStartupFileID = 7, /* File ID of the startup file (HFS Plus only) */ ! 270: kHFSAttributesFileID = 8, /* File ID of the attribute file (HFS Plus only) */ ! 271: kHFSBogusExtentFileID = 15, /* Used for exchanging extents in extents file */ ! 272: kHFSFirstUserCatalogNodeID = 16 ! 273: }; ! 274: ! 275: ! 276: /* HFS catalog key */ ! 277: ! 278: struct HFSCatalogKey { ! 279: UInt8 keyLength; /* key length (in bytes) */ ! 280: UInt8 reserved; /* reserved (set to zero) */ ! 281: HFSCatalogNodeID parentID; /* parent folder ID */ ! 282: Str31 nodeName; /* catalog node name */ ! 283: }; ! 284: typedef struct HFSCatalogKey HFSCatalogKey; ! 285: /* HFS Plus catalog key */ ! 286: ! 287: struct HFSPlusCatalogKey { ! 288: UInt16 keyLength; /* key length (in bytes) */ ! 289: HFSCatalogNodeID parentID; /* parent folder ID */ ! 290: HFSUniStr255 nodeName; /* catalog node name */ ! 291: }; ! 292: typedef struct HFSPlusCatalogKey HFSPlusCatalogKey; ! 293: ! 294: /* Catalog record types */ ! 295: ! 296: enum { ! 297: /* HFS Catalog Records */ ! 298: kHFSFolderRecord = 0x0100, /* Folder record */ ! 299: kHFSFileRecord = 0x0200, /* File record */ ! 300: kHFSFolderThreadRecord = 0x0300, /* Folder thread record */ ! 301: kHFSFileThreadRecord = 0x0400, /* File thread record */ ! 302: /* HFS Plus Catalog Records */ ! 303: kHFSPlusFolderRecord = 1, /* Folder record */ ! 304: kHFSPlusFileRecord = 2, /* File record */ ! 305: kHFSPlusFolderThreadRecord = 3, /* Folder thread record */ ! 306: kHFSPlusFileThreadRecord = 4 /* File thread record */ ! 307: }; ! 308: ! 309: ! 310: /* Catalog file record flags */ ! 311: ! 312: enum { ! 313: kHFSFileLockedBit = 0x0000, /* file is locked and cannot be written to */ ! 314: kHFSFileLockedMask = 0x0001, ! 315: kHFSThreadExistsBit = 0x0001, /* a file thread record exists for this file */ ! 316: kHFSThreadExistsMask = 0x0002 ! 317: }; ! 318: ! 319: ! 320: /* HFS catalog folder record - 70 bytes */ ! 321: ! 322: struct HFSCatalogFolder { ! 323: SInt16 recordType; /* record type */ ! 324: UInt16 flags; /* folder flags */ ! 325: UInt16 valence; /* folder valence */ ! 326: HFSCatalogNodeID folderID; /* folder ID */ ! 327: UInt32 createDate; /* date and time of creation */ ! 328: UInt32 modifyDate; /* date and time of last modification */ ! 329: UInt32 backupDate; /* date and time of last backup */ ! 330: DInfo userInfo; /* Finder information */ ! 331: DXInfo finderInfo; /* additional Finder information */ ! 332: UInt32 reserved[4]; /* reserved - set to zero */ ! 333: }; ! 334: typedef struct HFSCatalogFolder HFSCatalogFolder; ! 335: /* HFS Plus catalog folder record - 88 bytes */ ! 336: ! 337: struct HFSPlusCatalogFolder { ! 338: SInt16 recordType; /* record type = HFS Plus folder record */ ! 339: UInt16 flags; /* file flags */ ! 340: UInt32 valence; /* folder's valence (limited to 2^16 in Mac OS) */ ! 341: HFSCatalogNodeID folderID; /* folder ID */ ! 342: UInt32 createDate; /* date and time of creation */ ! 343: UInt32 contentModDate; /* date and time of last content modification */ ! 344: UInt32 attributeModDate; /* date and time of last attribute modification */ ! 345: UInt32 accessDate; /* date and time of last access (Rhapsody only) */ ! 346: UInt32 backupDate; /* date and time of last backup */ ! 347: HFSPlusPermissions permissions; /* permissions (for Rhapsody) */ ! 348: DInfo userInfo; /* Finder information */ ! 349: DXInfo finderInfo; /* additional Finder information */ ! 350: UInt32 textEncoding; /* hint for name conversions */ ! 351: UInt32 reserved; /* reserved - set to zero */ ! 352: }; ! 353: typedef struct HFSPlusCatalogFolder HFSPlusCatalogFolder; ! 354: /* HFS catalog file record - 102 bytes */ ! 355: ! 356: struct HFSCatalogFile { ! 357: SInt16 recordType; /* record type */ ! 358: SInt8 flags; /* file flags */ ! 359: SInt8 fileType; /* file type (unused ?) */ ! 360: FInfo userInfo; /* Finder information */ ! 361: HFSCatalogNodeID fileID; /* file ID */ ! 362: UInt16 dataStartBlock; /* not used - set to zero */ ! 363: SInt32 dataLogicalSize; /* logical EOF of data fork */ ! 364: SInt32 dataPhysicalSize; /* physical EOF of data fork */ ! 365: UInt16 rsrcStartBlock; /* not used - set to zero */ ! 366: SInt32 rsrcLogicalSize; /* logical EOF of resource fork */ ! 367: SInt32 rsrcPhysicalSize; /* physical EOF of resource fork */ ! 368: UInt32 createDate; /* date and time of creation */ ! 369: UInt32 modifyDate; /* date and time of last modification */ ! 370: UInt32 backupDate; /* date and time of last backup */ ! 371: FXInfo finderInfo; /* additional Finder information */ ! 372: UInt16 clumpSize; /* file clump size (not used) */ ! 373: HFSExtentRecord dataExtents; /* first data fork extent record */ ! 374: HFSExtentRecord rsrcExtents; /* first resource fork extent record */ ! 375: UInt32 reserved; /* reserved - set to zero */ ! 376: }; ! 377: typedef struct HFSCatalogFile HFSCatalogFile; ! 378: /* HFS Plus catalog file record - 248 bytes */ ! 379: ! 380: struct HFSPlusCatalogFile { ! 381: SInt16 recordType; /* record type = HFS Plus file record */ ! 382: UInt16 flags; /* file flags */ ! 383: UInt32 reserved1; /* reserved - set to zero */ ! 384: HFSCatalogNodeID fileID; /* file ID */ ! 385: UInt32 createDate; /* date and time of creation */ ! 386: UInt32 contentModDate; /* date and time of last content modification */ ! 387: UInt32 attributeModDate; /* date and time of last attribute modification */ ! 388: UInt32 accessDate; /* date and time of last access (Rhapsody only) */ ! 389: UInt32 backupDate; /* date and time of last backup */ ! 390: HFSPlusPermissions permissions; /* permissions (for Rhapsody) */ ! 391: FInfo userInfo; /* Finder information */ ! 392: FXInfo finderInfo; /* additional Finder information */ ! 393: UInt32 textEncoding; /* hint for name conversions */ ! 394: UInt32 reserved2; /* reserved - set to zero */ ! 395: ! 396: /* start on double long (64 bit) boundry */ ! 397: HFSPlusForkData dataFork; /* size and block data for data fork */ ! 398: HFSPlusForkData resourceFork; /* size and block data for resource fork */ ! 399: }; ! 400: typedef struct HFSPlusCatalogFile HFSPlusCatalogFile; ! 401: /* HFS catalog thread record - 46 bytes */ ! 402: ! 403: struct HFSCatalogThread { ! 404: SInt16 recordType; /* record type */ ! 405: SInt32 reserved[2]; /* reserved - set to zero */ ! 406: HFSCatalogNodeID parentID; /* parent ID for this catalog node */ ! 407: Str31 nodeName; /* name of this catalog node */ ! 408: }; ! 409: typedef struct HFSCatalogThread HFSCatalogThread; ! 410: /* HFS Plus catalog thread record -- 264 bytes */ ! 411: ! 412: struct HFSPlusCatalogThread { ! 413: SInt16 recordType; /* record type */ ! 414: SInt16 reserved; /* reserved - set to zero */ ! 415: HFSCatalogNodeID parentID; /* parent ID for this catalog node */ ! 416: HFSUniStr255 nodeName; /* name of this catalog node (variable length) */ ! 417: }; ! 418: typedef struct HFSPlusCatalogThread HFSPlusCatalogThread; ! 419: ! 420: /* ! 421: These are the types of records in the attribute B-tree. The values were chosen ! 422: so that they wouldn't conflict with the catalog record types. ! 423: */ ! 424: ! 425: enum { ! 426: kHFSPlusAttrInlineData = 0x10, /* if size < kAttrOverflowSize */ ! 427: kHFSPlusAttrForkData = 0x20, /* if size >= kAttrOverflowSize */ ! 428: kHFSPlusAttrExtents = 0x30 /* overflow extents for large attributes */ ! 429: }; ! 430: ! 431: ! 432: /* ! 433: HFSPlusAttrInlineData ! 434: For small attributes, whose entire value is stored within this one ! 435: B-tree record. ! 436: There would not be any other records for this attribute. ! 437: */ ! 438: ! 439: struct HFSPlusAttrInlineData { ! 440: UInt32 recordType; /* = kHFSPlusAttrInlineData*/ ! 441: UInt32 reserved; ! 442: UInt32 logicalSize; /* size in bytes of userData*/ ! 443: Byte userData[2]; /* variable length; space allocated is a multiple of 2 bytes*/ ! 444: }; ! 445: typedef struct HFSPlusAttrInlineData HFSPlusAttrInlineData; ! 446: /* ! 447: HFSPlusAttrForkData ! 448: For larger attributes, whose value is stored in allocation blocks. ! 449: If the attribute has more than 8 extents, there will be additonal ! 450: records (of type HFSPlusAttrExtents) for this attribute. ! 451: */ ! 452: ! 453: struct HFSPlusAttrForkData { ! 454: UInt32 recordType; /* = kHFSPlusAttrForkData*/ ! 455: UInt32 reserved; ! 456: HFSPlusForkData theFork; /* size and first extents of value*/ ! 457: }; ! 458: typedef struct HFSPlusAttrForkData HFSPlusAttrForkData; ! 459: /* ! 460: HFSPlusAttrExtents ! 461: This record contains information about overflow extents for large, ! 462: fragmented attributes. ! 463: */ ! 464: ! 465: struct HFSPlusAttrExtents { ! 466: UInt32 recordType; /* = kHFSPlusAttrExtents*/ ! 467: UInt32 reserved; ! 468: HFSPlusExtentRecord extents; /* additional extents*/ ! 469: }; ! 470: typedef struct HFSPlusAttrExtents HFSPlusAttrExtents; ! 471: /* A generic Attribute Record*/ ! 472: ! 473: union HFSPlusAttrRecord { ! 474: UInt32 recordType; ! 475: HFSPlusAttrInlineData inlineData; ! 476: HFSPlusAttrForkData forkData; ! 477: HFSPlusAttrExtents overflowExtents; ! 478: }; ! 479: typedef union HFSPlusAttrRecord HFSPlusAttrRecord; ! 480: /* Key and node lengths */ ! 481: ! 482: enum { ! 483: kHFSPlusExtentKeyMaximumLength = sizeof(HFSPlusExtentKey) - sizeof(UInt16), ! 484: kHFSExtentKeyMaximumLength = sizeof(HFSExtentKey) - sizeof(UInt8), ! 485: kHFSPlusCatalogKeyMaximumLength = sizeof(HFSPlusCatalogKey) - sizeof(UInt16), ! 486: kHFSPlusCatalogKeyMinimumLength = kHFSPlusCatalogKeyMaximumLength - sizeof(HFSUniStr255) + sizeof(UInt16), ! 487: kHFSCatalogKeyMaximumLength = sizeof(HFSCatalogKey) - sizeof(UInt8), ! 488: kHFSCatalogKeyMinimumLength = kHFSCatalogKeyMaximumLength - sizeof(Str31) + sizeof(UInt8), ! 489: kHFSPlusCatalogMinNodeSize = 4096, ! 490: kHFSPlusExtentMinNodeSize = 512, ! 491: kHFSPlusAttrMinNodeSize = 4096 ! 492: }; ! 493: ! 494: ! 495: /* HFS and HFS Plus volume attribute bits */ ! 496: ! 497: enum { ! 498: /* Bits 0-6 are reserved (always cleared by MountVol call) */ ! 499: kHFSVolumeHardwareLockBit = 7, /* volume is locked by hardware */ ! 500: kHFSVolumeUnmountedBit = 8, /* volume was successfully unmounted */ ! 501: kHFSVolumeSparedBlocksBit = 9, /* volume has bad blocks spared */ ! 502: kHFSVolumeNoCacheRequiredBit = 10, /* don't cache volume blocks (i.e. RAM or ROM disk) */ ! 503: kHFSBootVolumeInconsistentBit = 11, /* boot volume is inconsistent (System 7.6 and later) */ ! 504: /* Bits 12-14 are reserved for future use */ ! 505: kHFSVolumeSoftwareLockBit = 15, /* volume is locked by software */ ! 506: kHFSVolumeHardwareLockMask = 1 << kHFSVolumeHardwareLockBit, ! 507: kHFSVolumeUnmountedMask = 1 << kHFSVolumeUnmountedBit, ! 508: kHFSVolumeSparedBlocksMask = 1 << kHFSVolumeSparedBlocksBit, ! 509: kHFSVolumeNoCacheRequiredMask = 1 << kHFSVolumeNoCacheRequiredBit, ! 510: kHFSBootVolumeInconsistentMask = 1 << kHFSBootVolumeInconsistentBit, ! 511: kHFSVolumeSoftwareLockMask = 1 << kHFSVolumeSoftwareLockBit, ! 512: kHFSMDBAttributesMask = 0x8380 ! 513: }; ! 514: ! 515: ! 516: /* Master Directory Block (HFS only) - 162 bytes */ ! 517: /* Stored at sector #2 (3rd sector) */ ! 518: ! 519: struct HFSMasterDirectoryBlock { ! 520: ! 521: /* These first fields are also used by MFS */ ! 522: ! 523: UInt16 drSigWord; /* volume signature */ ! 524: UInt32 drCrDate; /* date and time of volume creation */ ! 525: UInt32 drLsMod; /* date and time of last modification */ ! 526: UInt16 drAtrb; /* volume attributes */ ! 527: SInt16 drNmFls; /* number of files in root folder */ ! 528: UInt16 drVBMSt; /* first block of volume bitmap */ ! 529: UInt16 drAllocPtr; /* start of next allocation search */ ! 530: UInt16 drNmAlBlks; /* number of allocation blocks in volume */ ! 531: SInt32 drAlBlkSiz; /* size (in bytes) of allocation blocks */ ! 532: SInt32 drClpSiz; /* default clump size */ ! 533: SInt16 drAlBlSt; /* first allocation block in volume */ ! 534: UInt32 drNxtCNID; /* next unused catalog node ID */ ! 535: SInt16 drFreeBks; /* number of unused allocation blocks */ ! 536: Str27 drVN; /* volume name */ ! 537: ! 538: /* Master Directory Block extensions for HFS */ ! 539: ! 540: UInt32 drVolBkUp; /* date and time of last backup */ ! 541: UInt16 drVSeqNum; /* volume backup sequence number */ ! 542: SInt32 drWrCnt; /* volume write count */ ! 543: SInt32 drXTClpSiz; /* clump size for extents overflow file */ ! 544: SInt32 drCTClpSiz; /* clump size for catalog file */ ! 545: SInt16 drNmRtDirs; /* number of directories in root folder */ ! 546: SInt32 drFilCnt; /* number of files in volume */ ! 547: SInt32 drDirCnt; /* number of directories in volume */ ! 548: SInt32 drFndrInfo[8]; /* information used by the Finder */ ! 549: UInt16 drEmbedSigWord; /* embedded volume signature (formerly drVCSize) */ ! 550: HFSExtentDescriptor drEmbedExtent; /* embedded volume location and size (formerly drVBMCSize and drCtlCSize) */ ! 551: SInt32 drXTFlSize; /* size of extents overflow file */ ! 552: HFSExtentRecord drXTExtRec; /* extent record for extents overflow file */ ! 553: SInt32 drCTFlSize; /* size of catalog file */ ! 554: HFSExtentRecord drCTExtRec; /* extent record for catalog file */ ! 555: }; ! 556: typedef struct HFSMasterDirectoryBlock HFSMasterDirectoryBlock; ! 557: ! 558: /* HFSPlusVolumeHeader (HFS Plus only) - 512 bytes */ ! 559: /* Stored at sector #2 (1st sector) and sector n-2 */ ! 560: ! 561: struct HFSPlusVolumeHeader { ! 562: UInt16 signature; /* volume signature == 'H+' */ ! 563: UInt16 version; /* current version is kHFSPlusVersion */ ! 564: UInt32 attributes; /* volume attributes */ ! 565: UInt32 lastMountedVersion; /* implementation version which last mounted volume */ ! 566: UInt32 reserved; /* reserved - set to zero */ ! 567: ! 568: UInt32 createDate; /* date and time of volume creation */ ! 569: UInt32 modifyDate; /* date and time of last modification */ ! 570: UInt32 backupDate; /* date and time of last backup */ ! 571: UInt32 checkedDate; /* date and time of last disk check */ ! 572: ! 573: UInt32 fileCount; /* number of files in volume */ ! 574: UInt32 folderCount; /* number of directories in volume */ ! 575: ! 576: UInt32 blockSize; /* size (in bytes) of allocation blocks */ ! 577: UInt32 totalBlocks; /* number of allocation blocks in volume (includes this header and VBM*/ ! 578: UInt32 freeBlocks; /* number of unused allocation blocks */ ! 579: ! 580: UInt32 nextAllocation; /* start of next allocation search */ ! 581: UInt32 rsrcClumpSize; /* default resource fork clump size */ ! 582: UInt32 dataClumpSize; /* default data fork clump size */ ! 583: HFSCatalogNodeID nextCatalogID; /* next unused catalog node ID */ ! 584: ! 585: UInt32 writeCount; /* volume write count */ ! 586: UInt64 encodingsBitmap; /* which encodings have been use on this volume */ ! 587: ! 588: UInt8 finderInfo[32]; /* information used by the Finder */ ! 589: ! 590: HFSPlusForkData allocationFile; /* allocation bitmap file */ ! 591: HFSPlusForkData extentsFile; /* extents B-tree file */ ! 592: HFSPlusForkData catalogFile; /* catalog B-tree file */ ! 593: HFSPlusForkData attributesFile; /* extended attributes B-tree file */ ! 594: HFSPlusForkData startupFile; /* boot file */ ! 595: }; ! 596: typedef struct HFSPlusVolumeHeader HFSPlusVolumeHeader; ! 597: ! 598: #if PRAGMA_STRUCT_ALIGN ! 599: #pragma options align=reset ! 600: #elif PRAGMA_STRUCT_PACKPUSH ! 601: #pragma pack(pop) ! 602: #elif PRAGMA_STRUCT_PACK ! 603: #pragma pack() ! 604: #endif ! 605: ! 606: #ifdef PRAGMA_IMPORT_OFF ! 607: #pragma import off ! 608: #elif PRAGMA_IMPORT ! 609: #pragma import reset ! 610: #endif ! 611: ! 612: #ifdef __cplusplus ! 613: } ! 614: #endif ! 615: ! 616: #endif /* __HFSVOLUMES__ */
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