mirror of
https://github.com/aaru-dps/Aaru.git
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416 lines
20 KiB
C#
416 lines
20 KiB
C#
/***************************************************************************
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FileSystem identifier and checker
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----------------------------------------------------------------------------
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Filename : AppleHFS.cs
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Version : 1.0
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Author(s) : Natalia Portillo
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Component : Filesystem plugins
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Revision : $Revision$
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Last change by : $Author$
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Date : $Date$
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--[ Description ] ----------------------------------------------------------
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Identifies HFS filesystems and shows information.
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--[ License ] --------------------------------------------------------------
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as
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published by the Free Software Foundation, either version 3 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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----------------------------------------------------------------------------
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Copyright (C) 2011-2014 Claunia.com
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****************************************************************************/
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//$Id$
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using System;
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using System.Text;
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using FileSystemIDandChk;
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// Information from Inside Macintosh
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// https://developer.apple.com/legacy/library/documentation/mac/pdf/Files/File_Manager.pdf
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namespace FileSystemIDandChk.Plugins
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{
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class AppleHFS : Plugin
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{
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const UInt16 HFS_MAGIC = 0x4244;
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// "BD"
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const UInt16 HFSP_MAGIC = 0x482B;
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// "H+"
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const UInt16 HFSBB_MAGIC = 0x4C4B;
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// "LK"
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public AppleHFS(PluginBase Core)
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{
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Name = "Apple Hierarchical File System";
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PluginUUID = new Guid("36405F8D-0D26-6ECC-0BBB-1D5225FF404F");
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}
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public override bool Identify(ImagePlugins.ImagePlugin imagePlugin, ulong partitionOffset)
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{
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byte[] mdb_sector = imagePlugin.ReadSector(2 + partitionOffset);
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UInt16 drSigWord = BigEndianBitConverter.ToUInt16(mdb_sector, 0);
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if (drSigWord == HFS_MAGIC)
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{
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drSigWord = BigEndianBitConverter.ToUInt16(mdb_sector, 0x7C); // Seek to embedded HFS+ signature
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return drSigWord != HFSP_MAGIC;
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}
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return false;
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}
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public override void GetInformation(ImagePlugins.ImagePlugin imagePlugin, ulong partitionOffset, out string information)
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{
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information = "";
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StringBuilder sb = new StringBuilder();
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HFS_MasterDirectoryBlock MDB = new HFS_MasterDirectoryBlock();
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HFS_BootBlock BB = new HFS_BootBlock();
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byte[] pString;
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byte[] bb_sector = imagePlugin.ReadSector(2 + partitionOffset); // BB's first sector
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byte[] mdb_sector = imagePlugin.ReadSector(2 + partitionOffset); // MDB sector
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MDB.drSigWord = BigEndianBitConverter.ToUInt16(mdb_sector, 0x000);
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if (MDB.drSigWord != HFS_MAGIC)
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return;
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MDB.drCrDate = BigEndianBitConverter.ToUInt32(mdb_sector, 0x002);
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MDB.drLsMod = BigEndianBitConverter.ToUInt32(mdb_sector, 0x006);
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MDB.drAtrb = BigEndianBitConverter.ToUInt16(mdb_sector, 0x00A);
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MDB.drNmFls = BigEndianBitConverter.ToUInt16(mdb_sector, 0x00C);
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MDB.drVBMSt = BigEndianBitConverter.ToUInt16(mdb_sector, 0X00E);
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MDB.drAllocPtr = BigEndianBitConverter.ToUInt16(mdb_sector, 0x010);
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MDB.drNmAlBlks = BigEndianBitConverter.ToUInt16(mdb_sector, 0x012);
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MDB.drAlBlkSiz = BigEndianBitConverter.ToUInt32(mdb_sector, 0x014);
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MDB.drClpSiz = BigEndianBitConverter.ToUInt32(mdb_sector, 0x018);
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MDB.drAlBlSt = BigEndianBitConverter.ToUInt16(mdb_sector, 0x01C);
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MDB.drNxtCNID = BigEndianBitConverter.ToUInt32(mdb_sector, 0x01E);
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MDB.drFreeBks = BigEndianBitConverter.ToUInt16(mdb_sector, 0x022);
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pString = new byte[28];
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Array.Copy(mdb_sector, 0x024, pString, 0, 28);
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MDB.drVN = StringHandlers.PascalToString(pString);
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MDB.drVolBkUp = BigEndianBitConverter.ToUInt32(mdb_sector, 0x040);
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MDB.drVSeqNum = BigEndianBitConverter.ToUInt16(mdb_sector, 0x044);
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MDB.drWrCnt = BigEndianBitConverter.ToUInt32(mdb_sector, 0x046);
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MDB.drXTClpSiz = BigEndianBitConverter.ToUInt32(mdb_sector, 0x04A);
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MDB.drCTClpSiz = BigEndianBitConverter.ToUInt32(mdb_sector, 0x04E);
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MDB.drNmRtDirs = BigEndianBitConverter.ToUInt16(mdb_sector, 0x052);
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MDB.drFilCnt = BigEndianBitConverter.ToUInt32(mdb_sector, 0x054);
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MDB.drDirCnt = BigEndianBitConverter.ToUInt32(mdb_sector, 0x058);
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MDB.drFndrInfo0 = BigEndianBitConverter.ToUInt32(mdb_sector, 0x05C);
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MDB.drFndrInfo1 = BigEndianBitConverter.ToUInt32(mdb_sector, 0x060);
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MDB.drFndrInfo2 = BigEndianBitConverter.ToUInt32(mdb_sector, 0x064);
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MDB.drFndrInfo3 = BigEndianBitConverter.ToUInt32(mdb_sector, 0x068);
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MDB.drFndrInfo4 = BigEndianBitConverter.ToUInt32(mdb_sector, 0x06C);
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MDB.drFndrInfo5 = BigEndianBitConverter.ToUInt32(mdb_sector, 0x070);
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MDB.drFndrInfo6 = BigEndianBitConverter.ToUInt32(mdb_sector, 0x074);
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MDB.drFndrInfo7 = BigEndianBitConverter.ToUInt32(mdb_sector, 0x078);
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MDB.drVCSize = BigEndianBitConverter.ToUInt16(mdb_sector, 0x07C);
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MDB.drVBMCSize = BigEndianBitConverter.ToUInt16(mdb_sector, 0x07E);
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MDB.drCtlCSize = BigEndianBitConverter.ToUInt16(mdb_sector, 0x080);
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// For HFS+ embedded volume
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MDB.drEmbedSigWord = BigEndianBitConverter.ToUInt16(mdb_sector, 0x07C);
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MDB.xdrStABNt = BigEndianBitConverter.ToUInt16(mdb_sector, 0x07E);
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MDB.xdrNumABlks = BigEndianBitConverter.ToUInt16(mdb_sector, 0x080);
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MDB.drXTFlSize = BigEndianBitConverter.ToUInt32(mdb_sector, 0x082);
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MDB.drCTFlSize = BigEndianBitConverter.ToUInt32(mdb_sector, 0x092);
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BB.signature = BigEndianBitConverter.ToUInt16(bb_sector, 0x000);
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if (BB.signature == HFSBB_MAGIC)
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{
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BB.branch = BigEndianBitConverter.ToUInt32(bb_sector, 0x002);
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BB.boot_flags = bb_sector[0x006];
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BB.boot_version = bb_sector[0x007];
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BB.sec_sv_pages = BigEndianBitConverter.ToInt16(bb_sector, 0x008);
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pString = new byte[16];
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Array.Copy(bb_sector, 0x00A, pString, 0, 16);
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BB.system_name = StringHandlers.PascalToString(pString);
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pString = new byte[16];
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Array.Copy(bb_sector, 0x01A, pString, 0, 16);
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BB.finder_name = StringHandlers.PascalToString(pString);
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pString = new byte[16];
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Array.Copy(bb_sector, 0x02A, pString, 0, 16);
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BB.debug_name = StringHandlers.PascalToString(pString);
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pString = new byte[16];
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Array.Copy(bb_sector, 0x03A, pString, 0, 16);
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BB.disasm_name = StringHandlers.PascalToString(pString);
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pString = new byte[16];
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Array.Copy(bb_sector, 0x04A, pString, 0, 16);
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BB.stupscr_name = StringHandlers.PascalToString(pString);
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pString = new byte[16];
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Array.Copy(bb_sector, 0x05A, pString, 0, 16);
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BB.bootup_name = StringHandlers.PascalToString(pString);
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pString = new byte[16];
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Array.Copy(bb_sector, 0x06A, pString, 0, 16);
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BB.clipbrd_name = StringHandlers.PascalToString(pString);
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BB.max_files = BigEndianBitConverter.ToUInt16(bb_sector, 0x07A);
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BB.queue_size = BigEndianBitConverter.ToUInt16(bb_sector, 0x07C);
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BB.heap_128k = BigEndianBitConverter.ToUInt32(bb_sector, 0x07E);
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BB.heap_256k = BigEndianBitConverter.ToUInt32(bb_sector, 0x082);
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BB.heap_512k = BigEndianBitConverter.ToUInt32(bb_sector, 0x086);
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}
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else
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BB.signature = 0x0000;
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sb.AppendLine("Apple Hierarchical File System");
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sb.AppendLine();
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sb.AppendLine("Master Directory Block:");
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sb.AppendFormat("Creation date: {0}", DateHandlers.MacToDateTime(MDB.drCrDate)).AppendLine();
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sb.AppendFormat("Last modification date: {0}", DateHandlers.MacToDateTime(MDB.drLsMod)).AppendLine();
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sb.AppendFormat("Last backup date: {0}", DateHandlers.MacToDateTime(MDB.drVolBkUp)).AppendLine();
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sb.AppendFormat("Backup sequence number: {0}", MDB.drVSeqNum).AppendLine();
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if ((MDB.drAtrb & 0x80) == 0x80)
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sb.AppendLine("Volume is locked by hardware.");
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if ((MDB.drAtrb & 0x100) == 0x100)
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sb.AppendLine("Volume was unmonted.");
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else
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sb.AppendLine("Volume is mounted.");
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if ((MDB.drAtrb & 0x200) == 0x200)
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sb.AppendLine("Volume has spared bad blocks.");
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if ((MDB.drAtrb & 0x400) == 0x400)
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sb.AppendLine("Volume does not need cache.");
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if ((MDB.drAtrb & 0x800) == 0x800)
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sb.AppendLine("Boot volume is inconsistent.");
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if ((MDB.drAtrb & 0x1000) == 0x1000)
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sb.AppendLine("There are reused CNIDs.");
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if ((MDB.drAtrb & 0x2000) == 0x2000)
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sb.AppendLine("Volume is journaled.");
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if ((MDB.drAtrb & 0x4000) == 0x4000)
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sb.AppendLine("Volume is seriously inconsistent.");
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if ((MDB.drAtrb & 0x8000) == 0x8000)
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sb.AppendLine("Volume is locked by software.");
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sb.AppendFormat("{0} files on root directory", MDB.drNmFls).AppendLine();
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sb.AppendFormat("{0} directories on root directory", MDB.drNmRtDirs).AppendLine();
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sb.AppendFormat("{0} files on volume", MDB.drFilCnt).AppendLine();
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sb.AppendFormat("{0} directories on volume", MDB.drDirCnt).AppendLine();
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sb.AppendFormat("Volume write count: {0}", MDB.drWrCnt).AppendLine();
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sb.AppendFormat("Volume bitmap starting sector (in 512-bytes): {0}", MDB.drVBMSt).AppendLine();
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sb.AppendFormat("Next allocation block: {0}.", MDB.drAllocPtr).AppendLine();
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sb.AppendFormat("{0} volume allocation blocks.", MDB.drNmAlBlks).AppendLine();
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sb.AppendFormat("{0} bytes per allocation block.", MDB.drAlBlkSiz).AppendLine();
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sb.AppendFormat("{0} bytes to allocate when extending a file.", MDB.drClpSiz).AppendLine();
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sb.AppendFormat("{0} bytes to allocate when extending a Extents B-Tree.", MDB.drXTClpSiz).AppendLine();
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sb.AppendFormat("{0} bytes to allocate when extending a Catalog B-Tree.", MDB.drCTClpSiz).AppendLine();
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sb.AppendFormat("Sector of first allocation block: {0}", MDB.drAlBlSt).AppendLine();
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sb.AppendFormat("Next unused CNID: {0}", MDB.drNxtCNID).AppendLine();
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sb.AppendFormat("{0} unused allocation blocks.", MDB.drFreeBks).AppendLine();
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sb.AppendFormat("{0} bytes in the Extents B-Tree", MDB.drXTFlSize).AppendLine();
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sb.AppendFormat("{0} bytes in the Catalog B-Tree", MDB.drCTFlSize).AppendLine();
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sb.AppendFormat("Volume name: {0}", MDB.drVN).AppendLine();
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sb.AppendLine("Finder info:");
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sb.AppendFormat("CNID of bootable system's directory: {0}", MDB.drFndrInfo0).AppendLine();
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sb.AppendFormat("CNID of first-run application's directory: {0}", MDB.drFndrInfo1).AppendLine();
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sb.AppendFormat("CNID of previously opened directory: {0}", MDB.drFndrInfo2).AppendLine();
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sb.AppendFormat("CNID of bootable Mac OS 8 or 9 directory: {0}", MDB.drFndrInfo3).AppendLine();
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sb.AppendFormat("CNID of bootable Mac OS X directory: {0}", MDB.drFndrInfo5).AppendLine();
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sb.AppendFormat("Mac OS X Volume ID: {0:X8}{1:X8}", MDB.drFndrInfo6, MDB.drFndrInfo7).AppendLine();
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if (MDB.drEmbedSigWord == HFSP_MAGIC)
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{
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sb.AppendLine("Volume wraps a HFS+ volume.");
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sb.AppendFormat("Starting block of the HFS+ volume: {0}", MDB.xdrStABNt).AppendLine();
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sb.AppendFormat("Allocations blocks of the HFS+ volume: {0}", MDB.xdrNumABlks).AppendLine();
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}
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else
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{
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sb.AppendFormat("{0} blocks in volume cache", MDB.drVCSize).AppendLine();
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sb.AppendFormat("{0} blocks in volume bitmap cache", MDB.drVBMCSize).AppendLine();
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sb.AppendFormat("{0} blocks in volume common cache", MDB.drCtlCSize).AppendLine();
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}
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if (BB.signature == HFSBB_MAGIC)
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{
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sb.AppendLine("Volume is bootable.");
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sb.AppendLine();
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sb.AppendLine("Boot Block:");
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if ((BB.boot_flags & 0x40) == 0x40)
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sb.AppendLine("Boot block should be executed.");
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if ((BB.boot_flags & 0x80) == 0x80)
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{
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sb.AppendLine("Boot block is in new unknown format.");
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}
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else
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{
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if (BB.sec_sv_pages > 0)
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sb.AppendLine("Allocate secondary sound buffer at boot.");
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else if (BB.sec_sv_pages < 0)
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sb.AppendLine("Allocate secondary sound and video buffers at boot.");
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sb.AppendFormat("System filename: {0}", BB.system_name).AppendLine();
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sb.AppendFormat("Finder filename: {0}", BB.finder_name).AppendLine();
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sb.AppendFormat("Debugger filename: {0}", BB.debug_name).AppendLine();
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sb.AppendFormat("Disassembler filename: {0}", BB.disasm_name).AppendLine();
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sb.AppendFormat("Startup screen filename: {0}", BB.stupscr_name).AppendLine();
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sb.AppendFormat("First program to execute at boot: {0}", BB.bootup_name).AppendLine();
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sb.AppendFormat("Clipboard filename: {0}", BB.clipbrd_name).AppendLine();
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sb.AppendFormat("Maximum opened files: {0}", BB.max_files * 4).AppendLine();
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sb.AppendFormat("Event queue size: {0}", BB.queue_size).AppendLine();
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sb.AppendFormat("Heap size with 128KiB of RAM: {0} bytes", BB.heap_128k).AppendLine();
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sb.AppendFormat("Heap size with 256KiB of RAM: {0} bytes", BB.heap_256k).AppendLine();
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sb.AppendFormat("Heap size with 512KiB of RAM or more: {0} bytes", BB.heap_512k).AppendLine();
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}
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}
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else
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sb.AppendLine("Volume is not bootable.");
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information = sb.ToString();
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return;
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}
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struct HFS_MasterDirectoryBlock // Should be sector 2 in volume
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{
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public UInt16 drSigWord;
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// 0x000, Signature, 0x4244
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public UInt32 drCrDate;
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// 0x002, Volume creation date
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public UInt32 drLsMod;
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// 0x006, Volume last modification date
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public UInt16 drAtrb;
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// 0x00A, Volume attributes
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public UInt16 drNmFls;
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// 0x00C, Files in root directory
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public UInt16 drVBMSt;
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// 0x00E, Start 512-byte sector of volume bitmap
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public UInt16 drAllocPtr;
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// 0x010, Allocation block to begin next allocation
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public UInt16 drNmAlBlks;
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// 0x012, Allocation blocks
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public UInt32 drAlBlkSiz;
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// 0x014, Bytes per allocation block
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public UInt32 drClpSiz;
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// 0x018, Bytes to allocate when extending a file
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public UInt16 drAlBlSt;
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// 0x01C, Start 512-byte sector of first allocation block
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public UInt32 drNxtCNID;
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// 0x01E, CNID for next file
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public UInt16 drFreeBks;
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// 0x022, Free allocation blocks
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public string drVN;
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// 0x024, Volume name (28 bytes)
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public UInt32 drVolBkUp;
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// 0x040, Volume last backup time
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public UInt16 drVSeqNum;
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// 0x044, Volume backup sequence number
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public UInt32 drWrCnt;
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// 0x046, Filesystem write count
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public UInt32 drXTClpSiz;
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// 0x04A, Bytes to allocate when extending the extents B-Tree
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public UInt32 drCTClpSiz;
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// 0x04E, Bytes to allocate when extending the catalog B-Tree
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public UInt16 drNmRtDirs;
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// 0x052, Number of directories in root directory
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public UInt32 drFilCnt;
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// 0x054, Number of files in the volume
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public UInt32 drDirCnt;
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// 0x058, Number of directories in the volume
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public UInt32 drFndrInfo0;
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// 0x05C, finderInfo[0], CNID for bootable system's directory
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public UInt32 drFndrInfo1;
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// 0x060, finderInfo[1], CNID of the directory containing the boot application
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public UInt32 drFndrInfo2;
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// 0x064, finderInfo[2], CNID of the directory that should be opened on boot
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public UInt32 drFndrInfo3;
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// 0x068, finderInfo[3], CNID for Mac OS 8 or 9 directory
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public UInt32 drFndrInfo4;
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// 0x06C, finderInfo[4], Reserved
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public UInt32 drFndrInfo5;
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// 0x070, finderInfo[5], CNID for Mac OS X directory
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public UInt32 drFndrInfo6;
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// 0x074, finderInfo[6], first part of Mac OS X volume ID
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public UInt32 drFndrInfo7;
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// 0x078, finderInfo[7], second part of Mac OS X volume ID
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// If wrapping HFS+
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public UInt16 drEmbedSigWord;
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// 0x07C, Embedded volume signature, "H+" if HFS+ is embedded ignore following two fields if not
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public UInt16 xdrStABNt;
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// 0x07E, Starting block number of embedded HFS+ volume
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public UInt16 xdrNumABlks;
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// 0x080, Allocation blocks used by embedded volume
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// If not
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public UInt16 drVCSize;
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// 0x07C, Size in blocks of volume cache
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public UInt16 drVBMCSize;
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// 0x07E, Size in blocks of volume bitmap cache
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public UInt16 drCtlCSize;
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// 0x080, Size in blocks of volume common cache
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// End of variable variables :D
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public UInt32 drXTFlSize;
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// 0x082, Bytes in the extents B-Tree
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// 3 HFS extents following, 32 bits each
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public UInt32 drCTFlSize;
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// 0x092, Bytes in the catalog B-Tree
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// 3 HFS extents following, 32 bits each
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}
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struct HFS_BootBlock // Should be sectors 0 and 1 in volume
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{
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public UInt16 signature;
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// 0x000, Signature, 0x4C4B if bootable
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public UInt32 branch;
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// 0x002, Branch
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public byte boot_flags;
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// 0x006, Boot block flags
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public byte boot_version;
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// 0x007, Boot block version
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public Int16 sec_sv_pages;
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// 0x008, Allocate secondary buffers
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public string system_name;
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// 0x00A, System file name (16 bytes)
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public string finder_name;
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// 0x01A, Finder file name (16 bytes)
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public string debug_name;
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// 0x02A, Debugger file name (16 bytes)
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|
public string disasm_name;
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// 0x03A, Disassembler file name (16 bytes)
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|
public string stupscr_name;
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// 0x04A, Startup screen file name (16 bytes)
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public string bootup_name;
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// 0x05A, First program to execute on boot (16 bytes)
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|
public string clipbrd_name;
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|
// 0x06A, Clipboard file name (16 bytes)
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|
public UInt16 max_files;
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|
// 0x07A, 1/4 of maximum opened at a time files
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|
public UInt16 queue_size;
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|
// 0x07C, Event queue size
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|
public UInt32 heap_128k;
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|
// 0x07E, Heap size on a Mac with 128KiB of RAM
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|
public UInt32 heap_256k;
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|
// 0x082, Heap size on a Mac with 256KiB of RAM
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|
public UInt32 heap_512k;
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|
// 0x086, Heap size on a Mac with 512KiB of RAM or more
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|
}
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|
// Follows boot code
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|
}
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|
}
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