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522 lines
25 KiB
C#
522 lines
25 KiB
C#
// /***************************************************************************
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// The Disc Image Chef
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// ----------------------------------------------------------------------------
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//
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// Filename : AppleHFSPlus.cs
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// Author(s) : Natalia Portillo <claunia@claunia.com>
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//
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// Component : Apple Hierarchical File System Plus plugin.
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//
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// --[ Description ] ----------------------------------------------------------
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//
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// Identifies the Apple Hierarchical File System Plus and shows information.
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//
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// --[ License ] --------------------------------------------------------------
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//
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// This library is free software; you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as
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// published by the Free Software Foundation; either version 2.1 of the
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// License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, see <http://www.gnu.org/licenses/>.
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//
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// ----------------------------------------------------------------------------
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// Copyright © 2011-2018 Natalia Portillo
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// ****************************************************************************/
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using System;
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using System.Runtime.InteropServices;
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using System.Text;
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using DiscImageChef.CommonTypes;
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using DiscImageChef.CommonTypes.Interfaces;
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using Schemas;
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namespace DiscImageChef.Filesystems
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{
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// Information from Apple TechNote 1150: https://developer.apple.com/legacy/library/technotes/tn/tn1150.html
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public class AppleHFSPlus : IFilesystem
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{
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/// <summary>
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/// "BD", HFS magic
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/// </summary>
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const ushort HFS_MAGIC = 0x4244;
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/// <summary>
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/// "H+", HFS+ magic
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/// </summary>
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const ushort HFSP_MAGIC = 0x482B;
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/// <summary>
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/// "HX", HFSX magic
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/// </summary>
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const ushort HFSX_MAGIC = 0x4858;
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public FileSystemType XmlFsType { get; private set; }
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public Encoding Encoding { get; private set; }
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public string Name => "Apple HFS+ filesystem";
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public Guid Id => new Guid("36405F8D-0D26-6EBE-436F-62F0586B4F08");
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public string Author => "Natalia Portillo";
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public bool Identify(IMediaImage imagePlugin, Partition partition)
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{
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if(2 + partition.Start >= partition.End) return false;
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ulong hfspOffset;
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uint sectorsToRead = 0x800 / imagePlugin.Info.SectorSize;
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if(0x800 % imagePlugin.Info.SectorSize > 0) sectorsToRead++;
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byte[] vhSector = imagePlugin.ReadSectors(partition.Start, sectorsToRead);
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ushort drSigWord = BigEndianBitConverter.ToUInt16(vhSector, 0x400);
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if(drSigWord == HFS_MAGIC) // "BD"
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{
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drSigWord = BigEndianBitConverter.ToUInt16(vhSector, 0x47C); // Read embedded HFS+ signature
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if(drSigWord == HFSP_MAGIC) // "H+"
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{
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ushort xdrStABNt = BigEndianBitConverter.ToUInt16(vhSector, 0x47E);
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uint drAlBlkSiz = BigEndianBitConverter.ToUInt32(vhSector, 0x414);
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ushort drAlBlSt = BigEndianBitConverter.ToUInt16(vhSector, 0x41C);
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hfspOffset = (ulong)((drAlBlSt * 512 + xdrStABNt * drAlBlkSiz) / imagePlugin.Info.SectorSize);
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}
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else hfspOffset = 0;
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}
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else hfspOffset = 0;
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vhSector = imagePlugin.ReadSectors(partition.Start + hfspOffset, sectorsToRead); // Read volume header
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drSigWord = BigEndianBitConverter.ToUInt16(vhSector, 0x400);
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return drSigWord == HFSP_MAGIC || drSigWord == HFSX_MAGIC;
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}
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public void GetInformation(IMediaImage imagePlugin, Partition partition, out string information,
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Encoding encoding)
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{
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Encoding = Encoding.BigEndianUnicode;
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information = "";
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HfsPlusVolumeHeader vh = new HfsPlusVolumeHeader();
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ulong hfspOffset;
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bool wrapped;
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uint sectorsToRead = 0x800 / imagePlugin.Info.SectorSize;
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if(0x800 % imagePlugin.Info.SectorSize > 0) sectorsToRead++;
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byte[] vhSector = imagePlugin.ReadSectors(partition.Start, sectorsToRead);
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ushort drSigWord = BigEndianBitConverter.ToUInt16(vhSector, 0x400);
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if(drSigWord == HFS_MAGIC) // "BD"
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{
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drSigWord = BigEndianBitConverter.ToUInt16(vhSector, 0x47C); // Read embedded HFS+ signature
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if(drSigWord == HFSP_MAGIC) // "H+"
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{
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ushort xdrStABNt = BigEndianBitConverter.ToUInt16(vhSector, 0x47E);
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uint drAlBlkSiz = BigEndianBitConverter.ToUInt32(vhSector, 0x414);
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ushort drAlBlSt = BigEndianBitConverter.ToUInt16(vhSector, 0x41C);
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hfspOffset = (ulong)((drAlBlSt * 512 + xdrStABNt * drAlBlkSiz) / imagePlugin.Info.SectorSize);
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wrapped = true;
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}
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else
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{
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hfspOffset = 0;
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wrapped = false;
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}
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}
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else
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{
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hfspOffset = 0;
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wrapped = false;
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}
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vhSector = imagePlugin.ReadSectors(partition.Start + hfspOffset, sectorsToRead); // Read volume header
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vh.signature = BigEndianBitConverter.ToUInt16(vhSector, 0x400);
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if(vh.signature != HFSP_MAGIC && vh.signature != HFSX_MAGIC) return;
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StringBuilder sb = new StringBuilder();
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if(vh.signature == 0x482B) sb.AppendLine("HFS+ filesystem.");
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if(vh.signature == 0x4858) sb.AppendLine("HFSX filesystem.");
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if(wrapped) sb.AppendLine("Volume is wrapped inside an HFS volume.");
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byte[] tmp = new byte[0x400];
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Array.Copy(vhSector, 0x400, tmp, 0, 0x400);
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vhSector = tmp;
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vh = BigEndianMarshal.ByteArrayToStructureBigEndian<HfsPlusVolumeHeader>(vhSector);
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if(vh.version == 4 || vh.version == 5)
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{
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sb.AppendFormat("Filesystem version is {0}.", vh.version).AppendLine();
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if((vh.attributes & 0x80) == 0x80) sb.AppendLine("Volume is locked on hardware.");
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if((vh.attributes & 0x100) == 0x100) sb.AppendLine("Volume is unmounted.");
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if((vh.attributes & 0x200) == 0x200) sb.AppendLine("There are bad blocks in the extents file.");
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if((vh.attributes & 0x400) == 0x400) sb.AppendLine("Volume does not require cache.");
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if((vh.attributes & 0x800) == 0x800) sb.AppendLine("Volume state is inconsistent.");
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if((vh.attributes & 0x1000) == 0x1000) sb.AppendLine("CNIDs are reused.");
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if((vh.attributes & 0x2000) == 0x2000) sb.AppendLine("Volume is journaled.");
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if((vh.attributes & 0x8000) == 0x8000) sb.AppendLine("Volume is locked on software.");
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sb.AppendFormat("Implementation that last mounted the volume: \"{0}\".",
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Encoding.ASCII.GetString(vh.lastMountedVersion)).AppendLine();
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if((vh.attributes & 0x2000) == 0x2000)
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sb.AppendFormat("Journal starts at allocation block {0}.", vh.journalInfoBlock).AppendLine();
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sb.AppendFormat("Creation date: {0}", DateHandlers.MacToDateTime(vh.createDate)).AppendLine();
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sb.AppendFormat("Last modification date: {0}", DateHandlers.MacToDateTime(vh.modifyDate)).AppendLine();
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if(vh.backupDate > 0)
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sb.AppendFormat("Last backup date: {0}", DateHandlers.MacToDateTime(vh.backupDate)).AppendLine();
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else sb.AppendLine("Volume has never been backed up");
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if(vh.backupDate > 0)
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sb.AppendFormat("Last check date: {0}", DateHandlers.MacToDateTime(vh.checkedDate)).AppendLine();
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else sb.AppendLine("Volume has never been checked up");
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sb.AppendFormat("{0} files on volume.", vh.fileCount).AppendLine();
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sb.AppendFormat("{0} folders on volume.", vh.folderCount).AppendLine();
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sb.AppendFormat("{0} bytes per allocation block.", vh.blockSize).AppendLine();
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sb.AppendFormat("{0} allocation blocks.", vh.totalBlocks).AppendLine();
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sb.AppendFormat("{0} free blocks.", vh.freeBlocks).AppendLine();
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sb.AppendFormat("Next allocation block: {0}.", vh.nextAllocation).AppendLine();
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sb.AppendFormat("Resource fork clump size: {0} bytes.", vh.rsrcClumpSize).AppendLine();
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sb.AppendFormat("Data fork clump size: {0} bytes.", vh.dataClumpSize).AppendLine();
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sb.AppendFormat("Next unused CNID: {0}.", vh.nextCatalogID).AppendLine();
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sb.AppendFormat("Volume has been mounted writable {0} times.", vh.writeCount).AppendLine();
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sb.AppendFormat("Allocation File is {0} bytes.", vh.allocationFile_logicalSize).AppendLine();
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sb.AppendFormat("Extents File is {0} bytes.", vh.extentsFile_logicalSize).AppendLine();
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sb.AppendFormat("Catalog File is {0} bytes.", vh.catalogFile_logicalSize).AppendLine();
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sb.AppendFormat("Attributes File is {0} bytes.", vh.attributesFile_logicalSize).AppendLine();
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sb.AppendFormat("Startup File is {0} bytes.", vh.startupFile_logicalSize).AppendLine();
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sb.AppendLine("Finder info:");
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sb.AppendFormat("CNID of bootable system's directory: {0}", vh.drFndrInfo0).AppendLine();
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sb.AppendFormat("CNID of first-run application's directory: {0}", vh.drFndrInfo1).AppendLine();
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sb.AppendFormat("CNID of previously opened directory: {0}", vh.drFndrInfo2).AppendLine();
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sb.AppendFormat("CNID of bootable Mac OS 8 or 9 directory: {0}", vh.drFndrInfo3).AppendLine();
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sb.AppendFormat("CNID of bootable Mac OS X directory: {0}", vh.drFndrInfo5).AppendLine();
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if(vh.drFndrInfo6 != 0 && vh.drFndrInfo7 != 0)
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sb.AppendFormat("Mac OS X Volume ID: {0:X8}{1:X8}", vh.drFndrInfo6, vh.drFndrInfo7).AppendLine();
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XmlFsType = new FileSystemType();
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if(vh.backupDate > 0)
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{
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XmlFsType.BackupDate = DateHandlers.MacToDateTime(vh.backupDate);
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XmlFsType.BackupDateSpecified = true;
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}
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XmlFsType.Bootable |= vh.drFndrInfo0 != 0 || vh.drFndrInfo3 != 0 || vh.drFndrInfo5 != 0;
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XmlFsType.Clusters = vh.totalBlocks;
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XmlFsType.ClusterSize = (int)vh.blockSize;
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if(vh.createDate > 0)
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{
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XmlFsType.CreationDate = DateHandlers.MacToDateTime(vh.createDate);
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XmlFsType.CreationDateSpecified = true;
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}
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XmlFsType.Dirty = (vh.attributes & 0x100) != 0x100;
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XmlFsType.Files = vh.fileCount;
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XmlFsType.FilesSpecified = true;
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XmlFsType.FreeClusters = vh.freeBlocks;
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XmlFsType.FreeClustersSpecified = true;
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if(vh.modifyDate > 0)
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{
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XmlFsType.ModificationDate = DateHandlers.MacToDateTime(vh.modifyDate);
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XmlFsType.ModificationDateSpecified = true;
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}
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if(vh.signature == 0x482B) XmlFsType.Type = "HFS+";
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if(vh.signature == 0x4858) XmlFsType.Type = "HFSX";
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if(vh.drFndrInfo6 != 0 && vh.drFndrInfo7 != 0)
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XmlFsType.VolumeSerial = $"{vh.drFndrInfo6:X8}{vh.drFndrInfo7:X8}";
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XmlFsType.SystemIdentifier = Encoding.ASCII.GetString(vh.lastMountedVersion);
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}
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else
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{
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sb.AppendFormat("Filesystem version is {0}.", vh.version).AppendLine();
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sb.AppendLine("This version is not supported yet.");
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}
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information = sb.ToString();
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}
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/// <summary>
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/// HFS+ Volume Header, should be at offset 0x0400 bytes in volume with a size of 532 bytes
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/// </summary>
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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struct HfsPlusVolumeHeader
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{
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/// <summary>0x000, "H+" for HFS+, "HX" for HFSX</summary>
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public ushort signature;
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/// <summary>0x002, 4 for HFS+, 5 for HFSX</summary>
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public ushort version;
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/// <summary>0x004, Volume attributes</summary>
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public uint attributes;
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/// <summary>
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/// 0x008, Implementation that last mounted the volume.
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/// Reserved by Apple:
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/// "8.10" Mac OS 8.1 to 9.2.2
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/// "10.0" Mac OS X
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/// "HFSJ" Journaled implementation
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/// "fsck" /sbin/fsck
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/// </summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)]
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public byte[] lastMountedVersion;
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/// <summary>0x00C, Allocation block number containing the journal</summary>
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public uint journalInfoBlock;
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/// <summary>0x010, Date of volume creation</summary>
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public uint createDate;
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/// <summary>0x014, Date of last volume modification</summary>
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public uint modifyDate;
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/// <summary>0x018, Date of last backup</summary>
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public uint backupDate;
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/// <summary>0x01C, Date of last consistency check</summary>
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public uint checkedDate;
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/// <summary>0x020, File on the volume</summary>
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public uint fileCount;
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/// <summary>0x024, Folders on the volume</summary>
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public uint folderCount;
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/// <summary>0x028, Bytes per allocation block</summary>
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public uint blockSize;
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/// <summary>0x02C, Allocation blocks on the volume</summary>
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public uint totalBlocks;
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/// <summary>0x030, Free allocation blocks</summary>
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public uint freeBlocks;
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/// <summary>0x034, Hint for next allocation block</summary>
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public uint nextAllocation;
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/// <summary>0x038, Resource fork clump size</summary>
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public uint rsrcClumpSize;
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/// <summary>0x03C, Data fork clump size</summary>
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public uint dataClumpSize;
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/// <summary>0x040, Next unused CNID</summary>
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public uint nextCatalogID;
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/// <summary>0x044, Times that the volume has been mounted writable</summary>
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public uint writeCount;
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/// <summary>0x048, Used text encoding hints</summary>
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public ulong encodingsBitmap;
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/// <summary>0x050, finderInfo[0], CNID for bootable system's directory</summary>
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public uint drFndrInfo0;
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/// <summary>0x054, finderInfo[1], CNID of the directory containing the boot application</summary>
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public uint drFndrInfo1;
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/// <summary>0x058, finderInfo[2], CNID of the directory that should be opened on boot</summary>
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public uint drFndrInfo2;
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/// <summary>0x05C, finderInfo[3], CNID for Mac OS 8 or 9 directory</summary>
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public uint drFndrInfo3;
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/// <summary>0x060, finderInfo[4], Reserved</summary>
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public uint drFndrInfo4;
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/// <summary>0x064, finderInfo[5], CNID for Mac OS X directory</summary>
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public uint drFndrInfo5;
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/// <summary>0x068, finderInfo[6], first part of Mac OS X volume ID</summary>
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public uint drFndrInfo6;
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/// <summary>0x06C, finderInfo[7], second part of Mac OS X volume ID</summary>
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public uint drFndrInfo7;
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// HFSPlusForkData allocationFile;
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/// <summary>0x070</summary>
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public ulong allocationFile_logicalSize;
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/// <summary>0x078</summary>
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public uint allocationFile_clumpSize;
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/// <summary>0x07C</summary>
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public uint allocationFile_totalBlocks;
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/// <summary>0x080</summary>
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public uint allocationFile_extents_startBlock0;
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/// <summary>0x084</summary>
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public uint allocationFile_extents_blockCount0;
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/// <summary>0x088</summary>
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public uint allocationFile_extents_startBlock1;
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/// <summary>0x08C</summary>
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public uint allocationFile_extents_blockCount1;
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/// <summary>0x090</summary>
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public uint allocationFile_extents_startBlock2;
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/// <summary>0x094</summary>
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public uint allocationFile_extents_blockCount2;
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/// <summary>0x098</summary>
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public uint allocationFile_extents_startBlock3;
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/// <summary>0x09C</summary>
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public uint allocationFile_extents_blockCount3;
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/// <summary>0x0A0</summary>
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public uint allocationFile_extents_startBlock4;
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/// <summary>0x0A4</summary>
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public uint allocationFile_extents_blockCount4;
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/// <summary>0x0A8</summary>
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public uint allocationFile_extents_startBlock5;
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/// <summary>0x0AC</summary>
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public uint allocationFile_extents_blockCount5;
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/// <summary>0x0B0</summary>
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public uint allocationFile_extents_startBlock6;
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/// <summary>0x0B4</summary>
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public uint allocationFile_extents_blockCount6;
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/// <summary>0x0B8</summary>
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public uint allocationFile_extents_startBlock7;
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/// <summary>0x0BC</summary>
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public uint allocationFile_extents_blockCount7;
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// HFSPlusForkData extentsFile;
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/// <summary>0x0C0</summary>
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public ulong extentsFile_logicalSize;
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/// <summary>0x0C8</summary>
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public uint extentsFile_clumpSize;
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/// <summary>0x0CC</summary>
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public uint extentsFile_totalBlocks;
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/// <summary>0x0D0</summary>
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public uint extentsFile_extents_startBlock0;
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/// <summary>0x0D4</summary>
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public uint extentsFile_extents_blockCount0;
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/// <summary>0x0D8</summary>
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public uint extentsFile_extents_startBlock1;
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/// <summary>0x0DC</summary>
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public uint extentsFile_extents_blockCount1;
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/// <summary>0x0E0</summary>
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public uint extentsFile_extents_startBlock2;
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/// <summary>0x0E4</summary>
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public uint extentsFile_extents_blockCount2;
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/// <summary>0x0E8</summary>
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public uint extentsFile_extents_startBlock3;
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/// <summary>0x0EC</summary>
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public uint extentsFile_extents_blockCount3;
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/// <summary>0x0F0</summary>
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public uint extentsFile_extents_startBlock4;
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/// <summary>0x0F4</summary>
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public uint extentsFile_extents_blockCount4;
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/// <summary>0x0F8</summary>
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public uint extentsFile_extents_startBlock5;
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/// <summary>0x0FC</summary>
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public uint extentsFile_extents_blockCount5;
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/// <summary>0x100</summary>
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public uint extentsFile_extents_startBlock6;
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/// <summary>0x104</summary>
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public uint extentsFile_extents_blockCount6;
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/// <summary>0x108</summary>
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public uint extentsFile_extents_startBlock7;
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/// <summary>0x10C</summary>
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public uint extentsFile_extents_blockCount7;
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// HFSPlusForkData catalogFile;
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/// <summary>0x110</summary>
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public ulong catalogFile_logicalSize;
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/// <summary>0x118</summary>
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public uint catalogFile_clumpSize;
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/// <summary>0x11C</summary>
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public uint catalogFile_totalBlocks;
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/// <summary>0x120</summary>
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public uint catalogFile_extents_startBlock0;
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/// <summary>0x124</summary>
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public uint catalogFile_extents_blockCount0;
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/// <summary>0x128</summary>
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public uint catalogFile_extents_startBlock1;
|
|
/// <summary>0x12C</summary>
|
|
public uint catalogFile_extents_blockCount1;
|
|
/// <summary>0x130</summary>
|
|
public uint catalogFile_extents_startBlock2;
|
|
/// <summary>0x134</summary>
|
|
public uint catalogFile_extents_blockCount2;
|
|
/// <summary>0x138</summary>
|
|
public uint catalogFile_extents_startBlock3;
|
|
/// <summary>0x13C</summary>
|
|
public uint catalogFile_extents_blockCount3;
|
|
/// <summary>0x140</summary>
|
|
public uint catalogFile_extents_startBlock4;
|
|
/// <summary>0x144</summary>
|
|
public uint catalogFile_extents_blockCount4;
|
|
/// <summary>0x148</summary>
|
|
public uint catalogFile_extents_startBlock5;
|
|
/// <summary>0x14C</summary>
|
|
public uint catalogFile_extents_blockCount5;
|
|
/// <summary>0x150</summary>
|
|
public uint catalogFile_extents_startBlock6;
|
|
/// <summary>0x154</summary>
|
|
public uint catalogFile_extents_blockCount6;
|
|
/// <summary>0x158</summary>
|
|
public uint catalogFile_extents_startBlock7;
|
|
/// <summary>0x15C</summary>
|
|
public uint catalogFile_extents_blockCount7;
|
|
// HFSPlusForkData attributesFile;
|
|
/// <summary>0x160</summary>
|
|
public ulong attributesFile_logicalSize;
|
|
/// <summary>0x168</summary>
|
|
public uint attributesFile_clumpSize;
|
|
/// <summary>0x16C</summary>
|
|
public uint attributesFile_totalBlocks;
|
|
/// <summary>0x170</summary>
|
|
public uint attributesFile_extents_startBlock0;
|
|
/// <summary>0x174</summary>
|
|
public uint attributesFile_extents_blockCount0;
|
|
/// <summary>0x178</summary>
|
|
public uint attributesFile_extents_startBlock1;
|
|
/// <summary>0x17C</summary>
|
|
public uint attributesFile_extents_blockCount1;
|
|
/// <summary>0x180</summary>
|
|
public uint attributesFile_extents_startBlock2;
|
|
/// <summary>0x184</summary>
|
|
public uint attributesFile_extents_blockCount2;
|
|
/// <summary>0x188</summary>
|
|
public uint attributesFile_extents_startBlock3;
|
|
/// <summary>0x18C</summary>
|
|
public uint attributesFile_extents_blockCount3;
|
|
/// <summary>0x190</summary>
|
|
public uint attributesFile_extents_startBlock4;
|
|
/// <summary>0x194</summary>
|
|
public uint attributesFile_extents_blockCount4;
|
|
/// <summary>0x198</summary>
|
|
public uint attributesFile_extents_startBlock5;
|
|
/// <summary>0x19C</summary>
|
|
public uint attributesFile_extents_blockCount5;
|
|
/// <summary>0x1A0</summary>
|
|
public uint attributesFile_extents_startBlock6;
|
|
/// <summary>0x1A4</summary>
|
|
public uint attributesFile_extents_blockCount6;
|
|
/// <summary>0x1A8</summary>
|
|
public uint attributesFile_extents_startBlock7;
|
|
/// <summary>0x1AC</summary>
|
|
public uint attributesFile_extents_blockCount7;
|
|
// HFSPlusForkData startupFile;
|
|
/// <summary>0x1B0</summary>
|
|
public ulong startupFile_logicalSize;
|
|
/// <summary>0x1B8</summary>
|
|
public uint startupFile_clumpSize;
|
|
/// <summary>0x1BC</summary>
|
|
public uint startupFile_totalBlocks;
|
|
/// <summary>0x1C0</summary>
|
|
public uint startupFile_extents_startBlock0;
|
|
/// <summary>0x1C4</summary>
|
|
public uint startupFile_extents_blockCount0;
|
|
/// <summary>0x1C8</summary>
|
|
public uint startupFile_extents_startBlock1;
|
|
/// <summary>0x1D0</summary>
|
|
public uint startupFile_extents_blockCount1;
|
|
/// <summary>0x1D4</summary>
|
|
public uint startupFile_extents_startBlock2;
|
|
/// <summary>0x1D8</summary>
|
|
public uint startupFile_extents_blockCount2;
|
|
/// <summary>0x1DC</summary>
|
|
public uint startupFile_extents_startBlock3;
|
|
/// <summary>0x1E0</summary>
|
|
public uint startupFile_extents_blockCount3;
|
|
/// <summary>0x1E4</summary>
|
|
public uint startupFile_extents_startBlock4;
|
|
/// <summary>0x1E8</summary>
|
|
public uint startupFile_extents_blockCount4;
|
|
/// <summary>0x1EC</summary>
|
|
public uint startupFile_extents_startBlock5;
|
|
/// <summary>0x1F0</summary>
|
|
public uint startupFile_extents_blockCount5;
|
|
/// <summary>0x1F4</summary>
|
|
public uint startupFile_extents_startBlock6;
|
|
/// <summary>0x1F8</summary>
|
|
public uint startupFile_extents_blockCount6;
|
|
/// <summary>0x1FC</summary>
|
|
public uint startupFile_extents_startBlock7;
|
|
/// <summary>0x200</summary>
|
|
public uint startupFile_extents_blockCount7;
|
|
}
|
|
}
|
|
} |