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Aaru/DiscImageChef.Filesystems/LisaFS/Super.cs

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Separated LisaFS in different files.
2016-07-21 17:36:51 +01:00
// /***************************************************************************
// The Disc Image Chef
// ----------------------------------------------------------------------------
//
// Filename : Super.cs
// Version : 1.0
// Author(s) : Natalia Portillo
//
// Component : Component
//
// Revision : $Revision$
// Last change by : $Author$
// Date : $Date$
//
// --[ Description ] ----------------------------------------------------------
//
// Description
//
// --[ License ] --------------------------------------------------------------
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
// ----------------------------------------------------------------------------
// Copyright (C) 2011-2015 Claunia.com
// ****************************************************************************/
// //$Id$
using System;
Added Lisa filesystem code.
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using System.Collections.Generic;
using DiscImageChef.Console;
using DiscImageChef.ImagePlugins;
using System.CodeDom.Compiler;
Separated LisaFS in different files.
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namespace DiscImageChef.Filesystems.LisaFS
{
partial class LisaFS : Filesystem
{
public override Errno Mount()
{
Added Lisa filesystem code.
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return Mount(false);
}
public override Errno Mount(bool debug)
{
try
{
if(device.ImageInfo.readableSectorTags == null ||
!device.ImageInfo.readableSectorTags.Contains(SectorTagType.AppleSectorTag))
{
DicConsole.DebugWriteLine("LisaFS plugin", "Underlying device does not support Lisa tags");
return Errno.InOutError;
}
// LisaOS is big-endian
BigEndianBitConverter.IsLittleEndian = BitConverter.IsLittleEndian;
// Minimal LisaOS disk is 3.5" single sided double density, 800 sectors
if(device.GetSectors() < 800)
{
DicConsole.DebugWriteLine("LisaFS plugin", "Device is too small");
return Errno.InOutError;
}
// LisaOS searches sectors until tag tells MDDF resides there, so we'll search 100 sectors
for(int i = 0; i < 100; i++)
{
byte[] tag = device.ReadSectorTag((ulong)i, SectorTagType.AppleSectorTag);
UInt16 fileid = BigEndianBitConverter.ToUInt16(tag, 0x04);
DicConsole.DebugWriteLine("LisaFS plugin", "Sector {0}, file ID 0x{1:X4}", i, fileid);
if(fileid == FILEID_MDDF)
{
byte[] sector = device.ReadSector((ulong)i);
mddf = new MDDF();
byte[] pString = new byte[33];
UInt32 lisa_time;
mddf.fsversion = BigEndianBitConverter.ToUInt16(sector, 0x00);
mddf.volid = BigEndianBitConverter.ToUInt64(sector, 0x02);
mddf.volnum = BigEndianBitConverter.ToUInt16(sector, 0x0A);
Array.Copy(sector, 0x0C, pString, 0, 33);
mddf.volname = StringHandlers.PascalToString(pString);
mddf.unknown1 = sector[0x2D];
Array.Copy(sector, 0x2E, pString, 0, 33);
// Prevent garbage
if(pString[0] <= 32)
mddf.password = StringHandlers.PascalToString(pString);
else
mddf.password = "";
mddf.unknown2 = sector[0x4F];
mddf.machine_id = BigEndianBitConverter.ToUInt32(sector, 0x50);
mddf.master_copy_id = BigEndianBitConverter.ToUInt32(sector, 0x54);
lisa_time = BigEndianBitConverter.ToUInt32(sector, 0x58);
mddf.dtvc = DateHandlers.LisaToDateTime(lisa_time);
lisa_time = BigEndianBitConverter.ToUInt32(sector, 0x5C);
mddf.dtcc = DateHandlers.LisaToDateTime(lisa_time);
lisa_time = BigEndianBitConverter.ToUInt32(sector, 0x60);
mddf.dtvb = DateHandlers.LisaToDateTime(lisa_time);
lisa_time = BigEndianBitConverter.ToUInt32(sector, 0x64);
mddf.dtvs = DateHandlers.LisaToDateTime(lisa_time);
mddf.unknown3 = BigEndianBitConverter.ToUInt32(sector, 0x68);
mddf.mddf_block = BigEndianBitConverter.ToUInt32(sector, 0x6C);
mddf.volsize_minus_one = BigEndianBitConverter.ToUInt32(sector, 0x70);
mddf.volsize_minus_mddf_minus_one = BigEndianBitConverter.ToUInt32(sector, 0x74);
mddf.vol_size = BigEndianBitConverter.ToUInt32(sector, 0x78);
mddf.blocksize = BigEndianBitConverter.ToUInt16(sector, 0x7C);
mddf.datasize = BigEndianBitConverter.ToUInt16(sector, 0x7E);
mddf.unknown4 = BigEndianBitConverter.ToUInt16(sector, 0x80);
mddf.unknown5 = BigEndianBitConverter.ToUInt32(sector, 0x82);
mddf.unknown6 = BigEndianBitConverter.ToUInt32(sector, 0x86);
mddf.clustersize = BigEndianBitConverter.ToUInt16(sector, 0x8A);
mddf.fs_size = BigEndianBitConverter.ToUInt32(sector, 0x8C);
mddf.unknown7 = BigEndianBitConverter.ToUInt32(sector, 0x90);
mddf.unknown8 = BigEndianBitConverter.ToUInt32(sector, 0x94);
mddf.unknown9 = BigEndianBitConverter.ToUInt32(sector, 0x98);
mddf.unknown10 = BigEndianBitConverter.ToUInt32(sector, 0x9C);
mddf.unknown11 = BigEndianBitConverter.ToUInt32(sector, 0xA0);
mddf.unknown12 = BigEndianBitConverter.ToUInt32(sector, 0xA4);
mddf.unknown13 = BigEndianBitConverter.ToUInt32(sector, 0xA8);
mddf.unknown14 = BigEndianBitConverter.ToUInt32(sector, 0xAC);
mddf.filecount = BigEndianBitConverter.ToUInt16(sector, 0xB0);
mddf.unknown15 = BigEndianBitConverter.ToUInt32(sector, 0xB2);
mddf.unknown16 = BigEndianBitConverter.ToUInt32(sector, 0xB6);
mddf.freecount = BigEndianBitConverter.ToUInt32(sector, 0xBA);
mddf.unknown17 = BigEndianBitConverter.ToUInt16(sector, 0xBE);
mddf.unknown18 = BigEndianBitConverter.ToUInt32(sector, 0xC0);
mddf.overmount_stamp = BigEndianBitConverter.ToUInt64(sector, 0xC4);
mddf.serialization = BigEndianBitConverter.ToUInt32(sector, 0xCC);
mddf.unknown19 = BigEndianBitConverter.ToUInt32(sector, 0xD0);
mddf.unknown_timestamp = BigEndianBitConverter.ToUInt32(sector, 0xD4);
mddf.unknown20 = BigEndianBitConverter.ToUInt32(sector, 0xD8);
mddf.unknown21 = BigEndianBitConverter.ToUInt32(sector, 0xDC);
mddf.unknown22 = BigEndianBitConverter.ToUInt32(sector, 0xE0);
mddf.unknown23 = BigEndianBitConverter.ToUInt32(sector, 0xE4);
mddf.unknown24 = BigEndianBitConverter.ToUInt32(sector, 0xE8);
mddf.unknown25 = BigEndianBitConverter.ToUInt32(sector, 0xEC);
mddf.unknown26 = BigEndianBitConverter.ToUInt32(sector, 0xF0);
mddf.unknown27 = BigEndianBitConverter.ToUInt32(sector, 0xF4);
mddf.unknown28 = BigEndianBitConverter.ToUInt32(sector, 0xF8);
mddf.unknown29 = BigEndianBitConverter.ToUInt32(sector, 0xFC);
mddf.unknown30 = BigEndianBitConverter.ToUInt32(sector, 0x100);
mddf.unknown31 = BigEndianBitConverter.ToUInt32(sector, 0x104);
mddf.unknown32 = BigEndianBitConverter.ToUInt32(sector, 0x108);
mddf.unknown33 = BigEndianBitConverter.ToUInt32(sector, 0x10C);
mddf.unknown34 = BigEndianBitConverter.ToUInt32(sector, 0x110);
mddf.unknown35 = BigEndianBitConverter.ToUInt32(sector, 0x114);
mddf.backup_volid = BigEndianBitConverter.ToUInt64(sector, 0x118);
mddf.label_size = BigEndianBitConverter.ToUInt16(sector, 0x120);
mddf.fs_overhead = BigEndianBitConverter.ToUInt16(sector, 0x122);
mddf.result_scavenge = BigEndianBitConverter.ToUInt16(sector, 0x124);
mddf.boot_code = BigEndianBitConverter.ToUInt16(sector, 0x126);
mddf.boot_environ = BigEndianBitConverter.ToUInt16(sector, 0x6C);
mddf.unknown36 = BigEndianBitConverter.ToUInt32(sector, 0x12A);
mddf.unknown37 = BigEndianBitConverter.ToUInt32(sector, 0x12E);
mddf.unknown38 = BigEndianBitConverter.ToUInt32(sector, 0x132);
mddf.vol_sequence = BigEndianBitConverter.ToUInt16(sector, 0x136);
mddf.vol_left_mounted = sector[0x138];
if(mddf.mddf_block != i ||
mddf.vol_size > device.GetSectors() ||
mddf.vol_size - 1 != mddf.volsize_minus_one ||
mddf.vol_size - i - 1 != mddf.volsize_minus_mddf_minus_one ||
mddf.datasize > mddf.blocksize ||
mddf.blocksize < device.GetSectorSize() ||
mddf.datasize != device.GetSectorSize())
{
DicConsole.DebugWriteLine("LisaFS plugin", "Incorrect MDDF found");
return Errno.InvalidArgument;
}
if(mddf.fsversion != LisaFSv3)
{
string version = mddf.fsversion.ToString();
switch(mddf.fsversion)
{
case LisaFSv1:
version = "v1";
break;
case LisaFSv2:
version = "v2";
break;
}
DicConsole.DebugWriteLine("LisaFS plugin", "Cannot mount LisaFS version {0}", version);
return Errno.NotSupported;
}
extentCache = new Dictionary<short, ExtentFile>();
systemFileCache = new Dictionary<short, byte[]>();
fileCache = new Dictionary<short, byte[]>();
catalogCache = new Dictionary<short, List<CatalogEntry>>();
fileSizeCache = new Dictionary<short, int>();
Errno error;
mounted = true;
* DiscImageChef.Filesystems/LisaFS/Super.cs: Initialize debug structures before the root catalog is cached. * DiscImageChef.Filesystems/LisaFS/File.cs: Detect truncated files (errors in the filesystem).
2016-07-27 14:34:29 +01:00
this.debug = debug;
if(debug)
{
printedExtents = new List<short>();
}
Added Lisa filesystem code.
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List<CatalogEntry> tempCat;
error = ReadCatalog((short)FILEID_DIRECTORY, out tempCat);
if(error != Errno.NoError)
{
DicConsole.DebugWriteLine("LisaFS plugin", "Cannot read root catalog, error {0}", error.ToString());
mounted = false;
return error;
}
if(debug)
{
byte[] temp;
error = ReadSystemFile(FILEID_BOOT_SIGNED, out temp);
if(error != Errno.NoError)
{
DicConsole.DebugWriteLine("LisaFS plugin", "Unable to read boot blocks");
mounted = false;
return error;
}
error = ReadSystemFile(FILEID_LOADER_SIGNED, out temp);
if(error != Errno.NoError)
{
DicConsole.DebugWriteLine("LisaFS plugin", "Unable to read boot loader");
mounted = false;
return error;
}
error = ReadSystemFile((short)FILEID_MDDF, out temp);
if(error != Errno.NoError)
{
DicConsole.DebugWriteLine("LisaFS plugin", "Unable to read MDDF");
mounted = false;
return error;
}
error = ReadSystemFile((short)FILEID_BITMAP, out temp);
if(error != Errno.NoError)
{
DicConsole.DebugWriteLine("LisaFS plugin", "Unable to read volume bitmap");
mounted = false;
return error;
}
error = ReadSystemFile((short)FILEID_SRECORD, out temp);
if(error != Errno.NoError)
{
DicConsole.DebugWriteLine("LisaFS plugin", "Unable to read S-Records file");
mounted = false;
return error;
}
}
xmlFSType = new Schemas.FileSystemType();
if(DateTime.Compare(mddf.dtvb, DateHandlers.LisaToDateTime(0)) > 0)
{
xmlFSType.BackupDate = mddf.dtvb;
xmlFSType.BackupDateSpecified = true;
}
xmlFSType.Clusters = mddf.vol_size;
xmlFSType.ClusterSize = mddf.clustersize * mddf.datasize;
if(DateTime.Compare(mddf.dtvc, DateHandlers.LisaToDateTime(0)) > 0)
{
xmlFSType.CreationDate = mddf.dtvc;
xmlFSType.CreationDateSpecified = true;
}
xmlFSType.Dirty = mddf.vol_left_mounted != 0;
xmlFSType.Files = mddf.filecount;
xmlFSType.FilesSpecified = true;
xmlFSType.FreeClusters = mddf.freecount;
xmlFSType.FreeClustersSpecified = true;
xmlFSType.Type = "LisaFS";
xmlFSType.VolumeName = mddf.volname;
xmlFSType.VolumeSerial = String.Format("{0:X16}", mddf.volid);
return Errno.NoError;
}
}
DicConsole.DebugWriteLine("LisaFS plugin", "Not a Lisa filesystem");
return Errno.NotSupported;
}
catch(Exception ex)
{
DicConsole.ErrorWriteLine("Exception {0}, {1}, {2}", ex.Message, ex.InnerException, ex.StackTrace);
return Errno.InOutError;
}
Separated LisaFS in different files.
2016-07-21 17:36:51 +01:00
}
public override Errno Unmount()
{
Added Lisa filesystem code.
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mounted = false;
extentCache = null;
systemFileCache = null;
fileCache = null;
catalogCache = null;
fileSizeCache = null;
return Errno.NoError;
Separated LisaFS in different files.
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}
public override Errno StatFs(ref FileSystemInfo stat)
{
Added Lisa filesystem code.
2016-07-22 02:18:53 +01:00
if(!mounted)
return Errno.AccessDenied;
stat = new FileSystemInfo();
stat.Blocks = mddf.vol_size;
stat.FilenameLength = (ushort)E_NAME;
stat.Files = mddf.filecount;
stat.FreeBlocks = mddf.freecount;
stat.FreeFiles = FILEID_MAX - stat.Files;
stat.Id.Serial64 = mddf.volid;
stat.Id.IsLong = true;
stat.PluginId = PluginUUID;
stat.Type = "LisaFS v3";
return Errno.NoError;
Separated LisaFS in different files.
2016-07-21 17:36:51 +01:00
}
}
}
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