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725 lines
35 KiB
C#
725 lines
35 KiB
C#
// /***************************************************************************
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// The Disc Image Chef
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// ----------------------------------------------------------------------------
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//
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// Filename : MBR.cs
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// Author(s) : Natalia Portillo <claunia@claunia.com>
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//
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// Component : Partitioning scheme plugins.
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//
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// --[ Description ] ----------------------------------------------------------
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//
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// Manages Intel/Microsoft MBR (aka Master Boot Record).
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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.Collections.Generic;
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using System.Runtime.InteropServices;
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using DiscImageChef.CommonTypes;
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using DiscImageChef.Console;
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using DiscImageChef.DiscImages;
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namespace DiscImageChef.Partitions
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{
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// TODO: Support AAP extensions
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public class MBR : PartitionPlugin
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{
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const ulong GptMagic = 0x5452415020494645;
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public MBR()
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{
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Name = "Master Boot Record";
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PluginUuid = new Guid("5E8A34E8-4F1A-59E6-4BF7-7EA647063A76");
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}
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public override bool GetInformation(DiscImages.ImagePlugin imagePlugin,
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out List<CommonTypes.Partition> partitions, ulong sectorOffset)
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{
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ulong counter = 0;
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partitions = new List<CommonTypes.Partition>();
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if(imagePlugin.GetSectorSize() < 512) return false;
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uint sectorSize = imagePlugin.GetSectorSize();
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// Divider of sector size in MBR between real sector size
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ulong divider = 1;
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if(imagePlugin.ImageInfo.XmlMediaType == DiscImages.XmlMediaType.OpticalDisc)
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{
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sectorSize = 512;
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divider = 4;
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}
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byte[] sector = imagePlugin.ReadSector(sectorOffset);
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GCHandle handle = GCHandle.Alloc(sector, GCHandleType.Pinned);
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MasterBootRecord mbr =
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(MasterBootRecord)Marshal.PtrToStructure(handle.AddrOfPinnedObject(), typeof(MasterBootRecord));
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TimedMasterBootRecord mbr_time =
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(TimedMasterBootRecord)Marshal.PtrToStructure(handle.AddrOfPinnedObject(),
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typeof(TimedMasterBootRecord));
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SerializedMasterBootRecord mbr_serial =
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(SerializedMasterBootRecord)Marshal.PtrToStructure(handle.AddrOfPinnedObject(),
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typeof(SerializedMasterBootRecord));
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ModernMasterBootRecord mbr_modern =
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(ModernMasterBootRecord)Marshal.PtrToStructure(handle.AddrOfPinnedObject(),
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typeof(ModernMasterBootRecord));
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NecMasterBootRecord mbr_nec =
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(NecMasterBootRecord)Marshal.PtrToStructure(handle.AddrOfPinnedObject(), typeof(NecMasterBootRecord));
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DiskManagerMasterBootRecord mbr_ontrack =
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(DiskManagerMasterBootRecord)Marshal.PtrToStructure(handle.AddrOfPinnedObject(),
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typeof(DiskManagerMasterBootRecord));
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handle.Free();
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DicConsole.DebugWriteLine("MBR plugin", "xmlmedia = {0}", imagePlugin.ImageInfo.XmlMediaType);
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DicConsole.DebugWriteLine("MBR plugin", "mbr.magic = {0:X4}", mbr.magic);
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if(mbr.magic != MBR_Magic) return false; // Not MBR
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byte[] hdrBytes = imagePlugin.ReadSector(1 + sectorOffset);
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ulong signature = BitConverter.ToUInt64(hdrBytes, 0);
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DicConsole.DebugWriteLine("MBR Plugin", "gpt.signature = 0x{0:X16}", signature);
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if(signature == GptMagic) return false;
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if(signature != GptMagic && imagePlugin.ImageInfo.XmlMediaType == XmlMediaType.OpticalDisc)
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{
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hdrBytes = imagePlugin.ReadSector(sectorOffset);
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signature = BitConverter.ToUInt64(hdrBytes, 512);
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DicConsole.DebugWriteLine("MBR Plugin", "gpt.signature @ 0x200 = 0x{0:X16}", signature);
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if(signature == GptMagic) return false;
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}
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MBRPartitionEntry[] entries;
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if(mbr_ontrack.dm_magic == DM_Magic) entries = mbr_ontrack.entries;
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else if(mbr_nec.nec_magic == NEC_Magic) entries = mbr_nec.entries;
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else entries = mbr.entries;
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foreach(MBRPartitionEntry entry in entries)
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{
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byte start_sector = (byte)(entry.start_sector & 0x3F);
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ushort start_cylinder = (ushort)(((entry.start_sector & 0xC0) << 2) | entry.start_cylinder);
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byte end_sector = (byte)(entry.end_sector & 0x3F);
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ushort end_cylinder = (ushort)(((entry.end_sector & 0xC0) << 2) | entry.end_cylinder);
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ulong lba_start = entry.lba_start;
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ulong lba_sectors = entry.lba_sectors;
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// Let's start the fun...
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bool valid = true;
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bool extended = false;
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bool minix = false;
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if(entry.status != 0x00 && entry.status != 0x80) return false; // Maybe a FAT filesystem
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valid &= entry.type != 0x00;
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if(entry.type == 0x05 || entry.type == 0x0F || entry.type == 0x15 || entry.type == 0x1F ||
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entry.type == 0x85 || entry.type == 0x91 || entry.type == 0x9B || entry.type == 0xC5 ||
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entry.type == 0xCF || entry.type == 0xD5)
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{
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valid = false;
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extended = true; // Extended partition
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}
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minix |= entry.type == 0x81 || entry.type == 0x80; // MINIX partition
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valid &= entry.lba_start != 0 || entry.lba_sectors != 0 || entry.start_cylinder != 0 ||
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entry.start_head != 0 || entry.start_sector != 0 || entry.end_cylinder != 0 ||
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entry.end_head != 0 || entry.end_sector != 0;
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if(entry.lba_start == 0 && entry.lba_sectors == 0 && valid)
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{
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lba_start = Helpers.CHS.ToLBA(start_cylinder, entry.start_head, start_sector,
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imagePlugin.ImageInfo.Heads, imagePlugin.ImageInfo.SectorsPerTrack);
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lba_sectors = Helpers.CHS.ToLBA(end_cylinder, entry.end_head, entry.end_sector,
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imagePlugin.ImageInfo.Heads,
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imagePlugin.ImageInfo.SectorsPerTrack) - lba_start;
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}
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// For optical media
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lba_start /= divider;
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lba_sectors /= divider;
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if(minix && lba_start == sectorOffset) minix = false;
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if(lba_start > imagePlugin.GetSectors())
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{
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valid = false;
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extended = false;
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}
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// Some buggy implementations do some rounding errors getting a few sectors beyond device size
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if(lba_start + lba_sectors > imagePlugin.GetSectors())
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lba_sectors = imagePlugin.GetSectors() - lba_start;
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DicConsole.DebugWriteLine("MBR plugin", "entry.status {0}", entry.status);
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DicConsole.DebugWriteLine("MBR plugin", "entry.type {0}", entry.type);
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DicConsole.DebugWriteLine("MBR plugin", "entry.lba_start {0}", entry.lba_start);
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DicConsole.DebugWriteLine("MBR plugin", "entry.lba_sectors {0}", entry.lba_sectors);
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DicConsole.DebugWriteLine("MBR plugin", "entry.start_cylinder {0}", start_cylinder);
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DicConsole.DebugWriteLine("MBR plugin", "entry.start_head {0}", entry.start_head);
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DicConsole.DebugWriteLine("MBR plugin", "entry.start_sector {0}", start_sector);
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DicConsole.DebugWriteLine("MBR plugin", "entry.end_cylinder {0}", end_cylinder);
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DicConsole.DebugWriteLine("MBR plugin", "entry.end_head {0}", entry.end_head);
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DicConsole.DebugWriteLine("MBR plugin", "entry.end_sector {0}", end_sector);
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DicConsole.DebugWriteLine("MBR plugin", "entry.minix = {0}", minix);
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DicConsole.DebugWriteLine("MBR plugin", "lba_start {0}", lba_start);
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DicConsole.DebugWriteLine("MBR plugin", "lba_sectors {0}", lba_sectors);
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if(valid && minix) // Let's mix the fun
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if(GetMinix(imagePlugin, lba_start, divider, sectorOffset, sectorSize,
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out List<Partition> mnx_parts)) partitions.AddRange(mnx_parts);
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else minix = false;
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if(valid && !minix)
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{
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CommonTypes.Partition part = new CommonTypes.Partition();
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if((lba_start > 0 || imagePlugin.ImageInfo.XmlMediaType == XmlMediaType.OpticalDisc) &&
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lba_sectors > 0)
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{
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part.Start = lba_start + sectorOffset;
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part.Length = lba_sectors;
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part.Offset = part.Start * sectorSize;
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part.Size = part.Length * sectorSize;
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}
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else valid = false;
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if(valid)
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{
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part.Type = string.Format("0x{0:X2}", entry.type);
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part.Name = DecodeMBRType(entry.type);
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part.Sequence = counter;
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part.Description = entry.status == 0x80 ? "Partition is bootable." : "";
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part.Scheme = Name;
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counter++;
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partitions.Add(part);
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}
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}
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DicConsole.DebugWriteLine("MBR plugin", "entry.extended = {0}", extended);
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if(extended) // Let's extend the fun
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{
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bool processing_extended = true;
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ulong chain_start = lba_start;
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while(processing_extended)
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{
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sector = imagePlugin.ReadSector(lba_start);
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handle = GCHandle.Alloc(sector, GCHandleType.Pinned);
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ExtendedBootRecord ebr =
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(ExtendedBootRecord)Marshal.PtrToStructure(handle.AddrOfPinnedObject(),
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typeof(ExtendedBootRecord));
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handle.Free();
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DicConsole.DebugWriteLine("MBR plugin", "ebr.magic == MBR_Magic = {0}", ebr.magic == MBR_Magic);
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if(ebr.magic != MBR_Magic) break;
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ulong next_start = 0;
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foreach(MBRPartitionEntry ebr_entry in ebr.entries)
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{
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bool ext_valid = true;
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start_sector = (byte)(ebr_entry.start_sector & 0x3F);
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start_cylinder =
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(ushort)(((ebr_entry.start_sector & 0xC0) << 2) | ebr_entry.start_cylinder);
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end_sector = (byte)(ebr_entry.end_sector & 0x3F);
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end_cylinder = (ushort)(((ebr_entry.end_sector & 0xC0) << 2) | ebr_entry.end_cylinder);
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ulong ext_start = ebr_entry.lba_start;
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ulong ext_sectors = ebr_entry.lba_sectors;
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bool ext_minix = false;
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DicConsole.DebugWriteLine("MBR plugin", "ebr_entry.status {0}", ebr_entry.status);
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DicConsole.DebugWriteLine("MBR plugin", "ebr_entry.type {0}", ebr_entry.type);
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DicConsole.DebugWriteLine("MBR plugin", "ebr_entry.lba_start {0}", ebr_entry.lba_start);
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DicConsole.DebugWriteLine("MBR plugin", "ebr_entry.lba_sectors {0}", ebr_entry.lba_sectors);
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DicConsole.DebugWriteLine("MBR plugin", "ebr_entry.start_cylinder {0}", start_cylinder);
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DicConsole.DebugWriteLine("MBR plugin", "ebr_entry.start_head {0}", ebr_entry.start_head);
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DicConsole.DebugWriteLine("MBR plugin", "ebr_entry.start_sector {0}", start_sector);
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DicConsole.DebugWriteLine("MBR plugin", "ebr_entry.end_cylinder {0}", end_cylinder);
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DicConsole.DebugWriteLine("MBR plugin", "ebr_entry.end_head {0}", ebr_entry.end_head);
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DicConsole.DebugWriteLine("MBR plugin", "ebr_entry.end_sector {0}", end_sector);
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// Let's start the fun...
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ext_valid &= ebr_entry.status == 0x00 || ebr_entry.status == 0x80;
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ext_valid &= ebr_entry.type != 0x00;
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ext_valid &= ebr_entry.lba_start != 0 || ebr_entry.lba_sectors != 0 ||
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ebr_entry.start_cylinder != 0 || ebr_entry.start_head != 0 ||
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ebr_entry.start_sector != 0 || ebr_entry.end_cylinder != 0 ||
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ebr_entry.end_head != 0 || ebr_entry.end_sector != 0;
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if(ebr_entry.lba_start == 0 && ebr_entry.lba_sectors == 0 && ext_valid)
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{
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ext_start = Helpers.CHS.ToLBA(start_cylinder, ebr_entry.start_head, start_sector,
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imagePlugin.ImageInfo.Heads,
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imagePlugin.ImageInfo.SectorsPerTrack);
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ext_sectors =
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Helpers.CHS.ToLBA(end_cylinder, ebr_entry.end_head, ebr_entry.end_sector,
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imagePlugin.ImageInfo.Heads,
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imagePlugin.ImageInfo.SectorsPerTrack) - ext_start;
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}
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ext_minix |= ebr_entry.type == 0x81 || ebr_entry.type == 0x80;
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// For optical media
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ext_start /= divider;
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ext_sectors /= divider;
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DicConsole.DebugWriteLine("MBR plugin", "ext_start {0}", ext_start);
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DicConsole.DebugWriteLine("MBR plugin", "ext_sectors {0}", ext_sectors);
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if(ebr_entry.type == 0x05 || ebr_entry.type == 0x0F || ebr_entry.type == 0x15 ||
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ebr_entry.type == 0x1F || ebr_entry.type == 0x85 || ebr_entry.type == 0x91 ||
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ebr_entry.type == 0x9B || ebr_entry.type == 0xC5 || ebr_entry.type == 0xCF ||
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ebr_entry.type == 0xD5)
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{
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ext_valid = false;
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next_start = chain_start + ext_start;
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}
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ext_start += lba_start;
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ext_valid &= ext_start <= imagePlugin.GetSectors();
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// Some buggy implementations do some rounding errors getting a few sectors beyond device size
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if(ext_start + ext_sectors > imagePlugin.GetSectors())
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ext_sectors = imagePlugin.GetSectors() - ext_start;
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if(ext_valid && ext_minix) // Let's mix the fun
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if(GetMinix(imagePlugin, lba_start, divider, sectorOffset, sectorSize,
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out List<Partition> mnx_parts)) partitions.AddRange(mnx_parts);
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else ext_minix = false;
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if(ext_valid && !ext_minix)
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{
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Partition part = new Partition();
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if(ext_start > 0 && ext_sectors > 0)
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{
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part.Start = ext_start + sectorOffset;
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part.Length = ext_sectors;
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part.Offset = part.Start * sectorSize;
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part.Size = part.Length * sectorSize;
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}
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else ext_valid = false;
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if(ext_valid)
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{
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part.Type = string.Format("0x{0:X2}", ebr_entry.type);
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part.Name = DecodeMBRType(ebr_entry.type);
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part.Sequence = counter;
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part.Description = ebr_entry.status == 0x80 ? "Partition is bootable." : "";
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part.Scheme = Name;
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counter++;
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partitions.Add(part);
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}
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}
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}
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DicConsole.DebugWriteLine("MBR plugin", "next_start {0}", next_start);
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processing_extended &= next_start != 0;
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processing_extended &= next_start <= imagePlugin.GetSectors();
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lba_start = next_start;
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}
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}
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}
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// An empty MBR may exist, NeXT creates one and then hardcodes its disklabel
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return partitions.Count != 0;
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}
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static bool GetMinix(ImagePlugin imagePlugin, ulong start, ulong divider, ulong sectorOffset, uint sectorSize,
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out List<Partition> partitions)
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{
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partitions = new List<Partition>();
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byte[] sector = imagePlugin.ReadSector(start);
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GCHandle handle = GCHandle.Alloc(sector, GCHandleType.Pinned);
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ExtendedBootRecord mnx =
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(ExtendedBootRecord)Marshal.PtrToStructure(handle.AddrOfPinnedObject(), typeof(ExtendedBootRecord));
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handle.Free();
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DicConsole.DebugWriteLine("MBR plugin", "mnx.magic == MBR_Magic = {0}", mnx.magic == MBR_Magic);
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if(mnx.magic != MBR_Magic) return false;
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bool any_mnx = false;
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foreach(MBRPartitionEntry mnx_entry in mnx.entries)
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{
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bool mnx_valid = true;
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byte start_sector = (byte)(mnx_entry.start_sector & 0x3F);
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ushort start_cylinder = (ushort)(((mnx_entry.start_sector & 0xC0) << 2) | mnx_entry.start_cylinder);
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byte end_sector = (byte)(mnx_entry.end_sector & 0x3F);
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ushort end_cylinder = (ushort)(((mnx_entry.end_sector & 0xC0) << 2) | mnx_entry.end_cylinder);
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ulong mnx_start = mnx_entry.lba_start;
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ulong mnx_sectors = mnx_entry.lba_sectors;
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DicConsole.DebugWriteLine("MBR plugin", "mnx_entry.status {0}", mnx_entry.status);
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DicConsole.DebugWriteLine("MBR plugin", "mnx_entry.type {0}", mnx_entry.type);
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DicConsole.DebugWriteLine("MBR plugin", "mnx_entry.lba_start {0}", mnx_entry.lba_start);
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DicConsole.DebugWriteLine("MBR plugin", "mnx_entry.lba_sectors {0}", mnx_entry.lba_sectors);
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DicConsole.DebugWriteLine("MBR plugin", "mnx_entry.start_cylinder {0}", start_cylinder);
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DicConsole.DebugWriteLine("MBR plugin", "mnx_entry.start_head {0}", mnx_entry.start_head);
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DicConsole.DebugWriteLine("MBR plugin", "mnx_entry.start_sector {0}", start_sector);
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DicConsole.DebugWriteLine("MBR plugin", "mnx_entry.end_cylinder {0}", end_cylinder);
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DicConsole.DebugWriteLine("MBR plugin", "mnx_entry.end_head {0}", mnx_entry.end_head);
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DicConsole.DebugWriteLine("MBR plugin", "mnx_entry.end_sector {0}", end_sector);
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mnx_valid &= mnx_entry.status == 0x00 || mnx_entry.status == 0x80;
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mnx_valid &= mnx_entry.type == 0x81 || mnx_entry.type == 0x80;
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mnx_valid &= mnx_entry.lba_start != 0 || mnx_entry.lba_sectors != 0 || mnx_entry.start_cylinder != 0 ||
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mnx_entry.start_head != 0 || mnx_entry.start_sector != 0 || mnx_entry.end_cylinder != 0 ||
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mnx_entry.end_head != 0 || mnx_entry.end_sector != 0;
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if(mnx_entry.lba_start == 0 && mnx_entry.lba_sectors == 0 && mnx_valid)
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{
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mnx_start = Helpers.CHS.ToLBA(start_cylinder, mnx_entry.start_head, start_sector,
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imagePlugin.ImageInfo.Heads, imagePlugin.ImageInfo.SectorsPerTrack);
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mnx_sectors = Helpers.CHS.ToLBA(end_cylinder, mnx_entry.end_head, mnx_entry.end_sector,
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imagePlugin.ImageInfo.Heads,
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imagePlugin.ImageInfo.SectorsPerTrack) - mnx_start;
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}
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// For optical media
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mnx_start /= divider;
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mnx_sectors /= divider;
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DicConsole.DebugWriteLine("MBR plugin", "mnx_start {0}", mnx_start);
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|
DicConsole.DebugWriteLine("MBR plugin", "mnx_sectors {0}", mnx_sectors);
|
|
|
|
if(mnx_valid)
|
|
{
|
|
CommonTypes.Partition part = new CommonTypes.Partition();
|
|
if(mnx_start > 0 && mnx_sectors > 0)
|
|
{
|
|
part.Start = mnx_start + sectorOffset;
|
|
part.Length = mnx_sectors;
|
|
part.Offset = part.Start * sectorSize;
|
|
part.Size = part.Length * sectorSize;
|
|
}
|
|
else mnx_valid = false;
|
|
|
|
if(mnx_valid)
|
|
{
|
|
any_mnx = true;
|
|
part.Type = "MINIX";
|
|
part.Name = "MINIX";
|
|
part.Description = mnx_entry.status == 0x80 ? "Partition is bootable." : "";
|
|
part.Scheme = "MINIX";
|
|
|
|
partitions.Add(part);
|
|
}
|
|
}
|
|
}
|
|
|
|
return any_mnx;
|
|
}
|
|
|
|
static readonly string[] MBRTypes =
|
|
{
|
|
// 0x00
|
|
"Empty", "FAT12", "XENIX root", "XENIX /usr",
|
|
// 0x04
|
|
"FAT16 < 32 MiB", "Extended", "FAT16", "IFS (HPFS/NTFS)",
|
|
// 0x08
|
|
"AIX boot, OS/2, Commodore DOS", "AIX data, Coherent, QNX", "Coherent swap, OPUS, OS/2 Boot Manager",
|
|
"FAT32",
|
|
// 0x0C
|
|
"FAT32 (LBA)", "Unknown", "FAT16 (LBA)", "Extended (LBA)",
|
|
// 0x10
|
|
"OPUS", "Hidden FAT12", "Compaq diagnostics, recovery partition", "Unknown",
|
|
// 0x14
|
|
"Hidden FAT16 < 32 MiB, AST-DOS", "Unknown", "Hidden FAT16", "Hidden IFS (HPFS/NTFS)",
|
|
// 0x18
|
|
"AST-Windows swap", "Willowtech Photon coS", "Unknown", "Hidden FAT32",
|
|
// 0x1C
|
|
"Hidden FAT32 (LBA)", "Unknown", "Hidden FAT16 (LBA)", "Unknown",
|
|
// 0x20
|
|
"Willowsoft Overture File System", "Oxygen FSo2", "Oxygen Extended ", "SpeedStor reserved",
|
|
// 0x24
|
|
"NEC-DOS", "Unknown", "SpeedStor reserved", "Hidden NTFS",
|
|
// 0x28
|
|
"Unknown", "Unknown", "Unknown", "Unknown",
|
|
// 0x2C
|
|
"Unknown", "Unknown", "Unknown", "Unknown",
|
|
// 0x30
|
|
"Unknown", "SpeedStor reserved", "Unknown", "SpeedStor reserved",
|
|
// 0x34
|
|
"SpeedStor reserved", "Unknown", "SpeedStor reserved", "Unknown",
|
|
// 0x38
|
|
"Theos", "Plan 9", "Unknown", "Unknown",
|
|
// 0x3C
|
|
"Partition Magic", "Hidden NetWare", "Unknown", "Unknown",
|
|
// 0x40
|
|
"VENIX 80286", "PReP Boot", "Secure File System", "PTS-DOS",
|
|
// 0x44
|
|
"Unknown", "Priam, EUMEL/Elan", "EUMEL/Elan", "EUMEL/Elan",
|
|
// 0x48
|
|
"EUMEL/Elan", "Unknown", "ALFS/THIN lightweight filesystem for DOS", "Unknown",
|
|
// 0x4C
|
|
"Unknown", "QNX 4", "QNX 4", "QNX 4, Oberon",
|
|
// 0x50
|
|
"Ontrack DM, R/O, FAT", "Ontrack DM, R/W, FAT", "CP/M, Microport UNIX", "Ontrack DM 6",
|
|
// 0x54
|
|
"Ontrack DM 6", "EZ-Drive", "Golden Bow VFeature", "Unknown",
|
|
// 0x58
|
|
"Unknown", "Unknown", "Unknown", "Unknown",
|
|
// 0x5C
|
|
"Priam EDISK", "Unknown", "Unknown", "Unknown",
|
|
// 0x60
|
|
"Unknown", "SpeedStor", "Unknown", "GNU Hurd, System V, 386/ix",
|
|
// 0x64
|
|
"NetWare 286", "NetWare", "NetWare 386", "NetWare",
|
|
// 0x68
|
|
"NetWare", "NetWare NSS", "Unknown", "Unknown",
|
|
// 0x6C
|
|
"Unknown", "Unknown", "Unknown", "Unknown",
|
|
// 0x70
|
|
"DiskSecure Multi-Boot", "Unknown", "UNIX 7th Edition", "Unknown",
|
|
// 0x74
|
|
"Unknown", "IBM PC/IX", "Unknown", "Unknown",
|
|
// 0x78
|
|
"Unknown", "Unknown", "Unknown", "Unknown",
|
|
// 0x7C
|
|
"Unknown", "Unknown", "Unknown", "Unknown",
|
|
// 0x80
|
|
"Old MINIX", "MINIX, Old Linux", "Linux swap, Solaris", "Linux",
|
|
// 0x84
|
|
"Hidden by OS/2, APM hibernation", "Linux extended", "NT Stripe Set", "NT Stripe Set",
|
|
// 0x88
|
|
"Linux Plaintext", "Unknown", "Unknown", "Unknown",
|
|
// 0x8C
|
|
"Unknown", "Unknown", "Linux LVM", "Unknown",
|
|
// 0x90
|
|
"Unknown", "Unknown", "Unknown", "Amoeba, Hidden Linux",
|
|
// 0x94
|
|
"Amoeba bad blocks", "Unknown", "Unknown", "Unknown",
|
|
// 0x98
|
|
"Unknown", "Mylex EISA SCSI", "Unknown", "Unknown",
|
|
// 0x9C
|
|
"Unknown", "Unknown", "Unknown", "BSD/OS",
|
|
// 0xA0
|
|
"Hibernation", "HP Volume Expansion", "Unknown", "HP Volume Expansion",
|
|
// 0xA4
|
|
"HP Volume Expansion", "FreeBSD", "OpenBSD", "NeXTStep",
|
|
// 0xA8
|
|
"Apple UFS", "NetBSD", "Olivetti DOS FAT12", "Apple Boot",
|
|
// 0xAC
|
|
"Unknown", "Unknown", "Unknown", "Apple HFS",
|
|
// 0xB0
|
|
"BootStar", "HP Volume Expansion", "Unknown", "HP Volume Expansion",
|
|
// 0xB4
|
|
"HP Volume Expansion", "Unknown", "HP Volume Expansion", "BSDi",
|
|
// 0xB8
|
|
"BSDi swap", "Unknown", "Unknown", "PTS BootWizard",
|
|
// 0xBC
|
|
"Unknown", "Unknown", "Solaris boot", "Solaris",
|
|
// 0xC0
|
|
"Novell DOS, DR-DOS secured", "DR-DOS secured FAT12", "DR-DOS reserved", "DR-DOS reserved",
|
|
// 0xC4
|
|
"DR-DOS secured FAT16 < 32 MiB", "Unknown", "DR-DOS secured FAT16", "Syrinx",
|
|
// 0xC8
|
|
"DR-DOS reserved", "DR-DOS reserved", "DR-DOS reserved", "DR-DOS secured FAT32",
|
|
// 0xCC
|
|
"DR-DOS secured FAT32 (LBA)", "DR-DOS reserved", "DR-DOS secured FAT16 (LBA)",
|
|
"DR-DOS secured extended (LBA)",
|
|
// 0xD0
|
|
"Multiuser DOS secured FAT12", "Multiuser DOS secured FAT12", "Unknown", "Unknown",
|
|
// 0xD4
|
|
"Multiuser DOS secured FAT16 < 32 MiB", "Multiuser DOS secured extended", "Multiuser DOS secured FAT16",
|
|
"Unknown",
|
|
// 0xD8
|
|
"CP/M", "Unknown", "Filesystem-less data", "CP/M, CCP/M, CTOS",
|
|
// 0xDC
|
|
"Unknown", "Unknown", "Dell partition", "BootIt EMBRM",
|
|
// 0xE0
|
|
"Unknown", "SpeedStor", "DOS read/only", "SpeedStor",
|
|
// 0xE4
|
|
"SpeedStor", "Tandy DOS", "SpeedStor", "Unknown",
|
|
// 0xE8
|
|
"Unknown", "Unknown", "Unknown", "BeOS",
|
|
// 0xEC
|
|
"Unknown", "Spryt*x", "Guid Partition Table", "EFI system partition",
|
|
// 0xF0
|
|
"Linux boot", "SpeedStor", "DOS 3.3 secondary, Unisys DOS", "SpeedStor",
|
|
// 0xF4
|
|
"SpeedStor", "Prologue", "SpeedStor", "Unknown",
|
|
// 0xF8
|
|
"Unknown", "Unknown", "Unknown", "VMWare VMFS",
|
|
// 0xFC
|
|
"VMWare VMKCORE", "Linux RAID, FreeDOS", "SpeedStor, LANStep, PS/2 IML", "Xenix bad block"
|
|
};
|
|
|
|
static string DecodeMBRType(byte type)
|
|
{
|
|
return MBRTypes[type];
|
|
}
|
|
|
|
const ushort MBR_Magic = 0xAA55;
|
|
const ushort NEC_Magic = 0xA55A;
|
|
const ushort DM_Magic = 0x55AA;
|
|
|
|
[StructLayout(LayoutKind.Sequential, Pack = 1)]
|
|
struct MasterBootRecord
|
|
{
|
|
/// <summary>Boot code</summary>
|
|
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 446)] public byte[] boot_code;
|
|
/// <summary>Partitions</summary>
|
|
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)] public MBRPartitionEntry[] entries;
|
|
/// <summary><see cref="MBR_Magic"/></summary>
|
|
public ushort magic;
|
|
}
|
|
|
|
// TODO: IBM Boot Manager
|
|
[StructLayout(LayoutKind.Sequential, Pack = 1)]
|
|
struct ExtendedBootRecord
|
|
{
|
|
/// <summary>Boot code, almost always unused</summary>
|
|
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 446)] public byte[] boot_code;
|
|
/// <summary>Partitions or pointers</summary>
|
|
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)] public MBRPartitionEntry[] entries;
|
|
/// <summary><see cref="MBR_Magic"/></summary>
|
|
public ushort magic;
|
|
}
|
|
|
|
[StructLayout(LayoutKind.Sequential, Pack = 1)]
|
|
struct TimedMasterBootRecord
|
|
{
|
|
/// <summary>Boot code</summary>
|
|
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 218)] public byte[] boot_code;
|
|
/// <summary>Set to 0</summary>
|
|
public ushort zero;
|
|
/// <summary>Original physical drive</summary>
|
|
public byte drive;
|
|
/// <summary>Disk timestamp, seconds</summary>
|
|
public byte seconds;
|
|
/// <summary>Disk timestamp, minutes</summary>
|
|
public byte minutes;
|
|
/// <summary>Disk timestamp, hours</summary>
|
|
public byte hours;
|
|
/// <summary>Boot code, continuation</summary>
|
|
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 222)] public byte[] boot_code2;
|
|
/// <summary>Partitions</summary>
|
|
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)] public MBRPartitionEntry[] entries;
|
|
/// <summary><see cref="MBR_Magic"/></summary>
|
|
public ushort magic;
|
|
}
|
|
|
|
[StructLayout(LayoutKind.Sequential, Pack = 1)]
|
|
struct SerializedMasterBootRecord
|
|
{
|
|
/// <summary>Boot code</summary>
|
|
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 440)] public byte[] boot_code;
|
|
/// <summary>Disk serial number</summary>
|
|
public uint serial;
|
|
/// <summary>Set to 0</summary>
|
|
public ushort zero;
|
|
/// <summary>Partitions</summary>
|
|
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)] public MBRPartitionEntry[] entries;
|
|
/// <summary><see cref="MBR_Magic"/></summary>
|
|
public ushort magic;
|
|
}
|
|
|
|
[StructLayout(LayoutKind.Sequential, Pack = 1)]
|
|
struct ModernMasterBootRecord
|
|
{
|
|
/// <summary>Boot code</summary>
|
|
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 218)] public byte[] boot_code;
|
|
/// <summary>Set to 0</summary>
|
|
public ushort zero;
|
|
/// <summary>Original physical drive</summary>
|
|
public byte drive;
|
|
/// <summary>Disk timestamp, seconds</summary>
|
|
public byte seconds;
|
|
/// <summary>Disk timestamp, minutes</summary>
|
|
public byte minutes;
|
|
/// <summary>Disk timestamp, hours</summary>
|
|
public byte hours;
|
|
/// <summary>Boot code, continuation</summary>
|
|
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 216)] public byte[] boot_code2;
|
|
/// <summary>Disk serial number</summary>
|
|
public uint serial;
|
|
/// <summary>Set to 0</summary>
|
|
public ushort zero2;
|
|
/// <summary>Partitions</summary>
|
|
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)] public MBRPartitionEntry[] entries;
|
|
/// <summary><see cref="MBR_Magic"/></summary>
|
|
public ushort magic;
|
|
}
|
|
|
|
[StructLayout(LayoutKind.Sequential, Pack = 1)]
|
|
struct NecMasterBootRecord
|
|
{
|
|
/// <summary>Boot code</summary>
|
|
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 380)] public byte[] boot_code;
|
|
/// <summary><see cref="NEC_Magic"/></summary>
|
|
public ushort nec_magic;
|
|
/// <summary>Partitions</summary>
|
|
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 8)] public MBRPartitionEntry[] entries;
|
|
/// <summary><see cref="MBR_Magic"/></summary>
|
|
public ushort magic;
|
|
}
|
|
|
|
[StructLayout(LayoutKind.Sequential, Pack = 1)]
|
|
struct DiskManagerMasterBootRecord
|
|
{
|
|
/// <summary>Boot code</summary>
|
|
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 252)] public byte[] boot_code;
|
|
/// <summary><see cref="DM_Magic"/></summary>
|
|
public ushort dm_magic;
|
|
/// <summary>Partitions</summary>
|
|
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)] public MBRPartitionEntry[] entries;
|
|
/// <summary><see cref="MBR_Magic"/></summary>
|
|
public ushort magic;
|
|
}
|
|
|
|
[StructLayout(LayoutKind.Sequential, Pack = 1)]
|
|
struct MBRPartitionEntry
|
|
{
|
|
/// <summary>Partition status, 0x80 or 0x00, else invalid</summary>
|
|
public byte status;
|
|
/// <summary>Starting head [0,254]</summary>
|
|
public byte start_head;
|
|
/// <summary>Starting sector [1,63]</summary>
|
|
public byte start_sector;
|
|
/// <summary>Starting cylinder [0,1023]</summary>
|
|
public byte start_cylinder;
|
|
/// <summary>Partition type</summary>
|
|
public byte type;
|
|
/// <summary>Ending head [0,254]</summary>
|
|
public byte end_head;
|
|
/// <summary>Ending sector [1,63]</summary>
|
|
public byte end_sector;
|
|
/// <summary>Ending cylinder [0,1023]</summary>
|
|
public byte end_cylinder;
|
|
/// <summary>Starting absolute sector</summary>
|
|
public uint lba_start;
|
|
/// <summary>Total sectors</summary>
|
|
public uint lba_sectors;
|
|
}
|
|
}
|
|
} |