2015-04-20 16:38:13 +01:00
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/***************************************************************************
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The Disc Image Chef
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----------------------------------------------------------------------------
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Filename : NeXT.cs
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Version : 1.0
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Author(s) : Natalia Portillo
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Component : Partitioning scheme 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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Manages NeXTStep and OpenStep partitions.
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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.Collections.Generic;
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using System.Text;
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using DiscImageChef;
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// Information learnt from XNU source and testing against real disks
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2015-10-18 22:04:03 +01:00
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using DiscImageChef.Console;
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2015-04-20 16:38:13 +01:00
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namespace DiscImageChef.PartPlugins
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{
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class AtariPartitions : PartPlugin
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{
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const UInt32 TypeGEMDOS = 0x0047454D;
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const UInt32 TypeBigGEMDOS = 0x0042474D;
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const UInt32 TypeExtended = 0x0058474D;
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const UInt32 TypeLinux = 0x004C4E58;
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2015-04-20 17:51:21 +01:00
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const UInt32 TypeSwap = 0x00535750;
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2015-04-20 16:38:13 +01:00
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const UInt32 TypeRAW = 0x00524157;
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2015-04-20 17:51:21 +01:00
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const UInt32 TypeNetBSD = 0x004E4244;
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const UInt32 TypeNetBSDSwap = 0x004E4253;
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2015-04-20 16:38:13 +01:00
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2015-10-05 19:58:42 +01:00
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public AtariPartitions()
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2015-04-20 16:38:13 +01:00
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{
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Name = "Atari partitions";
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PluginUUID = new Guid("d1dd0f24-ec39-4c4d-9072-be31919a3b5e");
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}
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2015-10-05 19:45:07 +01:00
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public override bool GetInformation(ImagePlugins.ImagePlugin imagePlugin, out List<CommonTypes.Partition> partitions)
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2015-04-20 16:38:13 +01:00
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{
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2015-10-05 19:45:07 +01:00
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partitions = new List<CommonTypes.Partition>();
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2015-04-20 16:38:13 +01:00
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if (imagePlugin.GetSectorSize() < 512)
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return false;
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BigEndianBitConverter.IsLittleEndian = BitConverter.IsLittleEndian;
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byte[] sector = imagePlugin.ReadSector(0);
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AtariTable table = new AtariTable();
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table.boot = new byte[342];
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table.icdEntries = new AtariEntry[8];
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table.unused = new byte[12];
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table.entries = new AtariEntry[4];
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Array.Copy(sector, 0, table.boot, 0, 342);
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for (int i = 0; i < 8; i++)
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{
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table.icdEntries[i].type = BigEndianBitConverter.ToUInt32(sector, 342 + i * 12 + 0);
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table.icdEntries[i].start = BigEndianBitConverter.ToUInt32(sector, 342 + i * 12 + 4);
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table.icdEntries[i].length = BigEndianBitConverter.ToUInt32(sector, 342 + i * 12 + 8);
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}
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Array.Copy(sector, 438, table.unused, 0, 12);
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table.size = BigEndianBitConverter.ToUInt32(sector, 450);
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for (int i = 0; i < 4; i++)
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{
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table.entries[i].type = BigEndianBitConverter.ToUInt32(sector, 454 + i * 12 + 0);
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table.entries[i].start = BigEndianBitConverter.ToUInt32(sector, 454 + i * 12 + 4);
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table.entries[i].length = BigEndianBitConverter.ToUInt32(sector, 454 + i * 12 + 8);
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}
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table.badStart = BigEndianBitConverter.ToUInt32(sector, 502);
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table.badLength = BigEndianBitConverter.ToUInt32(sector, 506);
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table.checksum = BigEndianBitConverter.ToUInt16(sector, 510);
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2015-10-18 22:04:03 +01:00
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Checksums.SHA1Context sha1Ctx = new Checksums.SHA1Context();
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sha1Ctx.Init();
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sha1Ctx.Update(table.boot);
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DicConsole.DebugWriteLine("Atari partition plugin", "Boot code SHA1: {0}", sha1Ctx.End());
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2015-04-20 16:38:13 +01:00
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2015-10-18 22:04:03 +01:00
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for (int i = 0; i < 8; i++)
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{
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DicConsole.DebugWriteLine("Atari partition plugin", "table.icdEntries[{0}].flag = 0x{1:X2}", i, (table.icdEntries[i].type & 0xFF000000) >> 24);
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DicConsole.DebugWriteLine("Atari partition plugin", "table.icdEntries[{0}].type = 0x{1:X6}", i, (table.icdEntries[i].type & 0x00FFFFFF));
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DicConsole.DebugWriteLine("Atari partition plugin", "table.icdEntries[{0}].start = {1}", i, table.icdEntries[i].start);
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DicConsole.DebugWriteLine("Atari partition plugin", "table.icdEntries[{0}].length = {1}", i, table.icdEntries[i].length);
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}
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2015-04-20 16:38:13 +01:00
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2015-10-18 22:04:03 +01:00
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DicConsole.DebugWriteLine("Atari partition plugin", "table.size = {0}", table.size);
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2015-04-20 16:38:13 +01:00
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2015-10-18 22:04:03 +01:00
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for (int i = 0; i < 4; i++)
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{
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DicConsole.DebugWriteLine("Atari partition plugin", "table.entries[{0}].flag = 0x{1:X2}", i, (table.entries[i].type & 0xFF000000) >> 24);
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DicConsole.DebugWriteLine("Atari partition plugin", "table.entries[{0}].type = 0x{1:X6}", i, (table.entries[i].type & 0x00FFFFFF));
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DicConsole.DebugWriteLine("Atari partition plugin", "table.entries[{0}].start = {1}", i, table.entries[i].start);
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DicConsole.DebugWriteLine("Atari partition plugin", "table.entries[{0}].length = {1}", i, table.entries[i].length);
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2015-04-20 16:38:13 +01:00
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}
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2015-10-18 22:04:03 +01:00
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DicConsole.DebugWriteLine("Atari partition plugin", "table.badStart = {0}", table.badStart);
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DicConsole.DebugWriteLine("Atari partition plugin", "table.badLength = {0}", table.badLength);
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DicConsole.DebugWriteLine("Atari partition plugin", "table.checksum = 0x{0:X4}", table.checksum);
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2015-04-20 16:38:13 +01:00
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bool validTable = false;
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ulong partitionSequence = 0;
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for (int i = 0; i < 4; i++)
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{
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UInt32 type = table.entries[i].type & 0x00FFFFFF;
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if (type == TypeGEMDOS || type == TypeBigGEMDOS || type == TypeLinux ||
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2015-04-20 17:51:21 +01:00
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type == TypeSwap || type == TypeRAW || type == TypeNetBSD || type == TypeNetBSDSwap)
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2015-04-20 16:38:13 +01:00
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{
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validTable = true;
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if (table.entries[i].start <= imagePlugin.GetSectors())
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{
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2015-10-18 22:04:03 +01:00
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if ((table.entries[i].start + table.entries[i].length) > imagePlugin.GetSectors())
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DicConsole.DebugWriteLine("Atari partition plugin", "WARNING: End of partition goes beyond device size");
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2015-04-20 16:38:13 +01:00
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ulong sectorSize = imagePlugin.GetSectorSize();
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if (sectorSize == 2448 || sectorSize == 2352)
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sectorSize = 2048;
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2015-10-05 19:45:07 +01:00
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CommonTypes.Partition part = new CommonTypes.Partition();
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2015-04-20 16:38:13 +01:00
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part.PartitionLength = table.entries[i].length * sectorSize;
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part.PartitionSectors = table.entries[i].length;
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part.PartitionSequence = partitionSequence;
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part.PartitionName = "";
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part.PartitionStart = table.entries[i].start * sectorSize;
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part.PartitionStartSector = table.entries[i].start;
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byte[] partType = new byte[3];
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partType[0] = (byte)((type & 0xFF0000) >> 16);
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partType[1] = (byte)((type & 0x00FF00) >> 8);
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partType[2] = (byte)(type & 0x0000FF);
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part.PartitionType = Encoding.ASCII.GetString(partType);
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switch (type)
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{
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case TypeGEMDOS:
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part.PartitionDescription = "Atari GEMDOS partition";
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break;
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case TypeBigGEMDOS:
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part.PartitionDescription = "Atari GEMDOS partition bigger than 32 MiB";
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break;
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case TypeLinux:
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part.PartitionDescription = "Linux partition";
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break;
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2015-04-20 17:51:21 +01:00
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case TypeSwap:
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part.PartitionDescription = "Swap partition";
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2015-04-20 16:38:13 +01:00
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break;
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case TypeRAW:
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part.PartitionDescription = "RAW partition";
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break;
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2015-04-20 17:51:21 +01:00
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case TypeNetBSD:
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part.PartitionDescription = "NetBSD partition";
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break;
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case TypeNetBSDSwap:
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part.PartitionDescription = "NetBSD swap partition";
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break;
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2015-04-20 16:38:13 +01:00
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default:
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part.PartitionDescription = "Unknown partition type";
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break;
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}
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partitions.Add(part);
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partitionSequence++;
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}
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}
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if (type == TypeExtended)
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{
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byte[] extendedSector = imagePlugin.ReadSector(table.entries[i].start);
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AtariTable extendedTable = new AtariTable();
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extendedTable.entries = new AtariEntry[4];
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for (int j = 0; j < 4; j++)
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{
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extendedTable.entries[j].type = BigEndianBitConverter.ToUInt32(extendedSector, 454 + j * 12 + 0);
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extendedTable.entries[j].start = BigEndianBitConverter.ToUInt32(extendedSector, 454 + j * 12 + 4);
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extendedTable.entries[j].length = BigEndianBitConverter.ToUInt32(extendedSector, 454 + j * 12 + 8);
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}
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for (int j = 0; j < 4; j++)
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{
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UInt32 extendedType = extendedTable.entries[j].type & 0x00FFFFFF;
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if (extendedType == TypeGEMDOS || extendedType == TypeBigGEMDOS || extendedType == TypeLinux ||
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2015-04-20 17:51:21 +01:00
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extendedType == TypeSwap || extendedType == TypeRAW || extendedType == TypeNetBSD || extendedType == TypeNetBSDSwap)
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2015-04-20 16:38:13 +01:00
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{
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validTable = true;
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if (extendedTable.entries[j].start <= imagePlugin.GetSectors())
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{
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2015-10-18 22:04:03 +01:00
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if ((extendedTable.entries[j].start + extendedTable.entries[j].length) > imagePlugin.GetSectors())
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DicConsole.DebugWriteLine("Atari partition plugin", "WARNING: End of partition goes beyond device size");
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2015-04-20 16:38:13 +01:00
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ulong sectorSize = imagePlugin.GetSectorSize();
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if (sectorSize == 2448 || sectorSize == 2352)
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sectorSize = 2048;
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2015-10-05 19:45:07 +01:00
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CommonTypes.Partition part = new CommonTypes.Partition();
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2015-04-20 16:38:13 +01:00
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part.PartitionLength = extendedTable.entries[j].length * sectorSize;
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part.PartitionSectors = extendedTable.entries[j].length;
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part.PartitionSequence = partitionSequence;
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part.PartitionName = "";
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part.PartitionStart = extendedTable.entries[j].start * sectorSize;
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part.PartitionStartSector = extendedTable.entries[j].start;
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byte[] partType = new byte[3];
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partType[0] = (byte)((extendedType & 0xFF0000) >> 16);
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partType[1] = (byte)((extendedType & 0x00FF00) >> 8);
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partType[2] = (byte)(extendedType & 0x0000FF);
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part.PartitionType = Encoding.ASCII.GetString(partType);
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switch (extendedType)
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{
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case TypeGEMDOS:
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part.PartitionDescription = "Atari GEMDOS partition";
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break;
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case TypeBigGEMDOS:
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part.PartitionDescription = "Atari GEMDOS partition bigger than 32 MiB";
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break;
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case TypeLinux:
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part.PartitionDescription = "Linux partition";
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break;
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2015-04-20 17:51:21 +01:00
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case TypeSwap:
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|
|
part.PartitionDescription = "Swap partition";
|
2015-04-20 16:38:13 +01:00
|
|
|
|
break;
|
|
|
|
|
|
case TypeRAW:
|
|
|
|
|
|
part.PartitionDescription = "RAW partition";
|
|
|
|
|
|
break;
|
2015-04-20 17:51:21 +01:00
|
|
|
|
case TypeNetBSD:
|
|
|
|
|
|
part.PartitionDescription = "NetBSD partition";
|
|
|
|
|
|
break;
|
|
|
|
|
|
case TypeNetBSDSwap:
|
|
|
|
|
|
part.PartitionDescription = "NetBSD swap partition";
|
|
|
|
|
|
break;
|
2015-04-20 16:38:13 +01:00
|
|
|
|
default:
|
|
|
|
|
|
part.PartitionDescription = "Unknown partition type";
|
|
|
|
|
|
break;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
partitions.Add(part);
|
|
|
|
|
|
partitionSequence++;
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
if (validTable)
|
|
|
|
|
|
{
|
|
|
|
|
|
for (int i = 0; i < 8; i++)
|
|
|
|
|
|
{
|
|
|
|
|
|
UInt32 type = table.icdEntries[i].type & 0x00FFFFFF;
|
|
|
|
|
|
|
|
|
|
|
|
if (type == TypeGEMDOS || type == TypeBigGEMDOS || type == TypeLinux ||
|
2015-04-20 17:51:21 +01:00
|
|
|
|
type == TypeSwap || type == TypeRAW || type == TypeNetBSD || type == TypeNetBSDSwap)
|
2015-04-20 16:38:13 +01:00
|
|
|
|
{
|
|
|
|
|
|
if (table.icdEntries[i].start <= imagePlugin.GetSectors())
|
|
|
|
|
|
{
|
2015-10-18 22:04:03 +01:00
|
|
|
|
if ((table.icdEntries[i].start + table.icdEntries[i].length) > imagePlugin.GetSectors())
|
|
|
|
|
|
DicConsole.DebugWriteLine("Atari partition plugin", "WARNING: End of partition goes beyond device size");
|
2015-04-20 16:38:13 +01:00
|
|
|
|
|
|
|
|
|
|
ulong sectorSize = imagePlugin.GetSectorSize();
|
|
|
|
|
|
if (sectorSize == 2448 || sectorSize == 2352)
|
|
|
|
|
|
sectorSize = 2048;
|
|
|
|
|
|
|
2015-10-05 19:45:07 +01:00
|
|
|
|
CommonTypes.Partition part = new CommonTypes.Partition();
|
2015-04-20 16:38:13 +01:00
|
|
|
|
part.PartitionLength = table.icdEntries[i].length * sectorSize;
|
|
|
|
|
|
part.PartitionSectors = table.icdEntries[i].length;
|
|
|
|
|
|
part.PartitionSequence = partitionSequence;
|
|
|
|
|
|
part.PartitionName = "";
|
|
|
|
|
|
part.PartitionStart = table.icdEntries[i].start * sectorSize;
|
|
|
|
|
|
part.PartitionStartSector = table.icdEntries[i].start;
|
|
|
|
|
|
|
|
|
|
|
|
byte[] partType = new byte[3];
|
|
|
|
|
|
partType[0] = (byte)((type & 0xFF0000) >> 16);
|
|
|
|
|
|
partType[1] = (byte)((type & 0x00FF00) >> 8);
|
|
|
|
|
|
partType[2] = (byte)(type & 0x0000FF);
|
|
|
|
|
|
part.PartitionType = Encoding.ASCII.GetString(partType);
|
|
|
|
|
|
|
|
|
|
|
|
switch (type)
|
|
|
|
|
|
{
|
|
|
|
|
|
case TypeGEMDOS:
|
|
|
|
|
|
part.PartitionDescription = "Atari GEMDOS partition";
|
|
|
|
|
|
break;
|
|
|
|
|
|
case TypeBigGEMDOS:
|
|
|
|
|
|
part.PartitionDescription = "Atari GEMDOS partition bigger than 32 MiB";
|
|
|
|
|
|
break;
|
|
|
|
|
|
case TypeLinux:
|
|
|
|
|
|
part.PartitionDescription = "Linux partition";
|
|
|
|
|
|
break;
|
2015-04-20 17:51:21 +01:00
|
|
|
|
case TypeSwap:
|
|
|
|
|
|
part.PartitionDescription = "Swap partition";
|
2015-04-20 16:38:13 +01:00
|
|
|
|
break;
|
|
|
|
|
|
case TypeRAW:
|
|
|
|
|
|
part.PartitionDescription = "RAW partition";
|
|
|
|
|
|
break;
|
2015-04-20 17:51:21 +01:00
|
|
|
|
case TypeNetBSD:
|
|
|
|
|
|
part.PartitionDescription = "NetBSD partition";
|
|
|
|
|
|
break;
|
|
|
|
|
|
case TypeNetBSDSwap:
|
|
|
|
|
|
part.PartitionDescription = "NetBSD swap partition";
|
|
|
|
|
|
break;
|
2015-04-20 16:38:13 +01:00
|
|
|
|
default:
|
|
|
|
|
|
part.PartitionDescription = "Unknown partition type";
|
|
|
|
|
|
break;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
partitions.Add(part);
|
|
|
|
|
|
partitionSequence++;
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
return partitions.Count > 0;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
|
/// Atari partition entry
|
|
|
|
|
|
/// </summary>
|
|
|
|
|
|
struct AtariEntry
|
|
|
|
|
|
{
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
|
/// First byte flag, three bytes type in ASCII.
|
|
|
|
|
|
/// Flag bit 0 = active
|
|
|
|
|
|
/// Flag bit 7 = bootable
|
|
|
|
|
|
/// </summary>
|
|
|
|
|
|
public UInt32 type;
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
|
/// Starting sector
|
|
|
|
|
|
/// </summary>
|
|
|
|
|
|
public UInt32 start;
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
|
/// Length in sectors
|
|
|
|
|
|
/// </summary>
|
|
|
|
|
|
public UInt32 length;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
struct AtariTable
|
|
|
|
|
|
{
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
|
/// Boot code for 342 bytes
|
|
|
|
|
|
/// </summary>
|
|
|
|
|
|
public byte[] boot;
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
|
/// 8 extra entries for ICDPro driver
|
|
|
|
|
|
/// </summary>
|
|
|
|
|
|
public AtariEntry[] icdEntries;
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
|
/// Unused, 12 bytes
|
|
|
|
|
|
/// </summary>
|
|
|
|
|
|
public byte[] unused;
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
|
/// Disk size in sectors
|
|
|
|
|
|
/// </summary>
|
|
|
|
|
|
public UInt32 size;
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
|
/// 4 partition entries
|
|
|
|
|
|
/// </summary>
|
|
|
|
|
|
public AtariEntry[] entries;
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
|
/// Starting sector of bad block list
|
|
|
|
|
|
/// </summary>
|
|
|
|
|
|
public UInt32 badStart;
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
|
/// Length in sectors of bad block list
|
|
|
|
|
|
/// </summary>
|
|
|
|
|
|
public UInt32 badLength;
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
|
/// Checksum for bootable disks
|
|
|
|
|
|
/// </summary>
|
|
|
|
|
|
public UInt16 checksum;
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
