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Split Apple HFS in separate files.

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This commit is contained in:
Natalia Portillo
2020-02-18 23:38:11 +00:00
parent ff0c4025a7
commit 9a5d7c8dc1
6 changed files with 617 additions and 452 deletions
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451
DiscImageChef.Filesystems/AppleHFS.cs
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// /***************************************************************************
// The Disc Image Chef
// ----------------------------------------------------------------------------
//
// Filename : AppleHFS.cs
// Author(s) : Natalia Portillo <claunia@claunia.com>
//
// Component : Apple Hierarchical File System plugin.
//
// --[ Description ] ----------------------------------------------------------
//
// Identifies the Apple Hierarchical File System and shows information.
//
// --[ License ] --------------------------------------------------------------
//
// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation; either version 2.1 of the
// License, or (at your option) any later version.
//
// This library 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, see <http://www.gnu.org/licenses/>.
//
// ----------------------------------------------------------------------------
// Copyright © 2011-2020 Natalia Portillo
// ****************************************************************************/
using System;
using System.Runtime.InteropServices;
using System.Text;
using DiscImageChef.CommonTypes;
using DiscImageChef.CommonTypes.Interfaces;
using Schemas;
using Marshal = DiscImageChef.Helpers.Marshal;
namespace DiscImageChef.Filesystems
{
// Information from Inside Macintosh
// https://developer.apple.com/legacy/library/documentation/mac/pdf/Files/File_Manager.pdf
public class AppleHFS : IFilesystem
{
/// <summary>
/// "BD", HFS magic
/// </summary>
const ushort HFS_MAGIC = 0x4244;
/// <summary>
/// "H+", HFS+ magic
/// </summary>
const ushort HFSP_MAGIC = 0x482B;
/// <summary>
/// "LK", HFS bootblock magic
/// </summary>
const ushort HFSBB_MAGIC = 0x4C4B;
public FileSystemType XmlFsType { get; private set; }
public Encoding Encoding { get; private set; }
public string Name => "Apple Hierarchical File System";
public Guid Id => new Guid("36405F8D-0D26-6ECC-0BBB-1D5225FF404F");
public string Author => "Natalia Portillo";
public bool Identify(IMediaImage imagePlugin, Partition partition)
{
if(2 + partition.Start >= partition.End) return false;
byte[] mdbSector;
ushort drSigWord;
if(imagePlugin.Info.SectorSize == 2352 || imagePlugin.Info.SectorSize == 2448 ||
imagePlugin.Info.SectorSize == 2048)
{
mdbSector = imagePlugin.ReadSectors(partition.Start, 2);
foreach(int offset in new[] {0, 0x200, 0x400, 0x600, 0x800, 0xA00})
{
drSigWord = BigEndianBitConverter.ToUInt16(mdbSector, offset);
if(drSigWord != HFS_MAGIC) continue;
drSigWord =
BigEndianBitConverter.ToUInt16(mdbSector, offset + 0x7C); // Seek to embedded HFS+ signature
return drSigWord != HFSP_MAGIC;
}
}
else
{
mdbSector = imagePlugin.ReadSector(2 + partition.Start);
drSigWord = BigEndianBitConverter.ToUInt16(mdbSector, 0);
if(drSigWord != HFS_MAGIC) return false;
drSigWord = BigEndianBitConverter.ToUInt16(mdbSector, 0x7C); // Seek to embedded HFS+ signature
return drSigWord != HFSP_MAGIC;
}
return false;
}
public void GetInformation(IMediaImage imagePlugin, Partition partition, out string information,
Encoding encoding)
{
Encoding = encoding ?? Encoding.GetEncoding("macintosh");
information = "";
StringBuilder sb = new StringBuilder();
byte[] bbSector = null;
byte[] mdbSector = null;
ushort drSigWord;
bool apmFromHddOnCd = false;
if(imagePlugin.Info.SectorSize == 2352 || imagePlugin.Info.SectorSize == 2448 ||
imagePlugin.Info.SectorSize == 2048)
{
byte[] tmpSector = imagePlugin.ReadSectors(partition.Start, 2);
foreach(int offset in new[] {0, 0x200, 0x400, 0x600, 0x800, 0xA00})
{
drSigWord = BigEndianBitConverter.ToUInt16(tmpSector, offset);
if(drSigWord != HFS_MAGIC) continue;
bbSector = new byte[1024];
mdbSector = new byte[512];
if(offset >= 0x400) Array.Copy(tmpSector, offset - 0x400, bbSector, 0, 1024);
Array.Copy(tmpSector, offset, mdbSector, 0, 512);
apmFromHddOnCd = true;
break;
}
if(!apmFromHddOnCd) return;
}
else
{
mdbSector = imagePlugin.ReadSector(2 + partition.Start);
drSigWord = BigEndianBitConverter.ToUInt16(mdbSector, 0);
if(drSigWord == HFS_MAGIC) bbSector = imagePlugin.ReadSector(partition.Start);
else return;
}
HfsMasterDirectoryBlock mdb = Marshal.ByteArrayToStructureBigEndian<HfsMasterDirectoryBlock>(mdbSector);
HfsBootBlock bb = Marshal.ByteArrayToStructureBigEndian<HfsBootBlock>(bbSector);
sb.AppendLine("Apple Hierarchical File System");
sb.AppendLine();
if(apmFromHddOnCd)
sb.AppendLine("HFS uses 512 bytes/sector while device uses 2048 bytes/sector.").AppendLine();
sb.AppendLine("Master Directory Block:");
sb.AppendFormat("Creation date: {0}", DateHandlers.MacToDateTime(mdb.drCrDate)).AppendLine();
sb.AppendFormat("Last modification date: {0}", DateHandlers.MacToDateTime(mdb.drLsMod)).AppendLine();
if(mdb.drVolBkUp > 0)
{
sb.AppendFormat("Last backup date: {0}", DateHandlers.MacToDateTime(mdb.drVolBkUp)).AppendLine();
sb.AppendFormat("Backup sequence number: {0}", mdb.drVSeqNum).AppendLine();
}
else sb.AppendLine("Volume has never been backed up");
if((mdb.drAtrb & 0x80) == 0x80) sb.AppendLine("Volume is locked by hardware.");
sb.AppendLine((mdb.drAtrb & 0x100) == 0x100 ? "Volume was unmonted." : "Volume is mounted.");
if((mdb.drAtrb & 0x200) == 0x200) sb.AppendLine("Volume has spared bad blocks.");
if((mdb.drAtrb & 0x400) == 0x400) sb.AppendLine("Volume does not need cache.");
if((mdb.drAtrb & 0x800) == 0x800) sb.AppendLine("Boot volume is inconsistent.");
if((mdb.drAtrb & 0x1000) == 0x1000) sb.AppendLine("There are reused CNIDs.");
if((mdb.drAtrb & 0x2000) == 0x2000) sb.AppendLine("Volume is journaled.");
if((mdb.drAtrb & 0x4000) == 0x4000) sb.AppendLine("Volume is seriously inconsistent.");
if((mdb.drAtrb & 0x8000) == 0x8000) sb.AppendLine("Volume is locked by software.");
sb.AppendFormat("{0} files on root directory", mdb.drNmFls).AppendLine();
sb.AppendFormat("{0} directories on root directory", mdb.drNmRtDirs).AppendLine();
sb.AppendFormat("{0} files on volume", mdb.drFilCnt).AppendLine();
sb.AppendFormat("{0} directories on volume", mdb.drDirCnt).AppendLine();
sb.AppendFormat("Volume write count: {0}", mdb.drWrCnt).AppendLine();
sb.AppendFormat("Volume bitmap starting sector (in 512-bytes): {0}", mdb.drVBMSt).AppendLine();
sb.AppendFormat("Next allocation block: {0}.", mdb.drAllocPtr).AppendLine();
sb.AppendFormat("{0} volume allocation blocks.", mdb.drNmAlBlks).AppendLine();
sb.AppendFormat("{0} bytes per allocation block.", mdb.drAlBlkSiz).AppendLine();
sb.AppendFormat("{0} bytes to allocate when extending a file.", mdb.drClpSiz).AppendLine();
sb.AppendFormat("{0} bytes to allocate when extending a Extents B-Tree.", mdb.drXTClpSiz).AppendLine();
sb.AppendFormat("{0} bytes to allocate when extending a Catalog B-Tree.", mdb.drCTClpSiz).AppendLine();
sb.AppendFormat("Sector of first allocation block: {0}", mdb.drAlBlSt).AppendLine();
sb.AppendFormat("Next unused CNID: {0}", mdb.drNxtCNID).AppendLine();
sb.AppendFormat("{0} unused allocation blocks.", mdb.drFreeBks).AppendLine();
sb.AppendFormat("{0} bytes in the Extents B-Tree", mdb.drXTFlSize).AppendLine();
sb.AppendFormat("{0} bytes in the Catalog B-Tree", mdb.drCTFlSize).AppendLine();
sb.AppendFormat("Volume name: {0}", StringHandlers.PascalToString(mdb.drVN, Encoding)).AppendLine();
sb.AppendLine("Finder info:");
sb.AppendFormat("CNID of bootable system's directory: {0}", mdb.drFndrInfo0).AppendLine();
sb.AppendFormat("CNID of first-run application's directory: {0}", mdb.drFndrInfo1).AppendLine();
sb.AppendFormat("CNID of previously opened directory: {0}", mdb.drFndrInfo2).AppendLine();
sb.AppendFormat("CNID of bootable Mac OS 8 or 9 directory: {0}", mdb.drFndrInfo3).AppendLine();
sb.AppendFormat("CNID of bootable Mac OS X directory: {0}", mdb.drFndrInfo5).AppendLine();
if(mdb.drFndrInfo6 != 0 && mdb.drFndrInfo7 != 0)
sb.AppendFormat("Mac OS X Volume ID: {0:X8}{1:X8}", mdb.drFndrInfo6, mdb.drFndrInfo7).AppendLine();
if(mdb.drEmbedSigWord == HFSP_MAGIC)
{
sb.AppendLine("Volume wraps a HFS+ volume.");
sb.AppendFormat("Starting block of the HFS+ volume: {0}", mdb.xdrStABNt).AppendLine();
sb.AppendFormat("Allocations blocks of the HFS+ volume: {0}", mdb.xdrNumABlks).AppendLine();
}
else
{
sb.AppendFormat("{0} blocks in volume cache", mdb.drVCSize).AppendLine();
sb.AppendFormat("{0} blocks in volume bitmap cache", mdb.drVBMCSize).AppendLine();
sb.AppendFormat("{0} blocks in volume common cache", mdb.drCtlCSize).AppendLine();
}
if(bb.signature == HFSBB_MAGIC)
{
sb.AppendLine("Volume is bootable.");
sb.AppendLine();
sb.AppendLine("Boot Block:");
if((bb.boot_flags & 0x40) == 0x40) sb.AppendLine("Boot block should be executed.");
if((bb.boot_flags & 0x80) == 0x80) sb.AppendLine("Boot block is in new unknown format.");
else
{
if(bb.boot_flags > 0) sb.AppendLine("Allocate secondary sound buffer at boot.");
else if(bb.boot_flags < 0) sb.AppendLine("Allocate secondary sound and video buffers at boot.");
sb.AppendFormat("System filename: {0}", StringHandlers.PascalToString(bb.system_name, Encoding))
.AppendLine();
sb.AppendFormat("Finder filename: {0}", StringHandlers.PascalToString(bb.finder_name, Encoding))
.AppendLine();
sb.AppendFormat("Debugger filename: {0}", StringHandlers.PascalToString(bb.debug_name, Encoding))
.AppendLine();
sb.AppendFormat("Disassembler filename: {0}",
StringHandlers.PascalToString(bb.disasm_name, Encoding)).AppendLine();
sb.AppendFormat("Startup screen filename: {0}",
StringHandlers.PascalToString(bb.stupscr_name, Encoding)).AppendLine();
sb.AppendFormat("First program to execute at boot: {0}",
StringHandlers.PascalToString(bb.bootup_name, Encoding)).AppendLine();
sb.AppendFormat("Clipboard filename: {0}", StringHandlers.PascalToString(bb.clipbrd_name, Encoding))
.AppendLine();
sb.AppendFormat("Maximum opened files: {0}", bb.max_files * 4).AppendLine();
sb.AppendFormat("Event queue size: {0}", bb.queue_size).AppendLine();
sb.AppendFormat("Heap size with 128KiB of RAM: {0} bytes", bb.heap_128k).AppendLine();
sb.AppendFormat("Heap size with 256KiB of RAM: {0} bytes", bb.heap_256k).AppendLine();
sb.AppendFormat("Heap size with 512KiB of RAM or more: {0} bytes", bb.heap_512k).AppendLine();
}
}
else if(mdb.drFndrInfo0 != 0 || mdb.drFndrInfo3 != 0 || mdb.drFndrInfo5 != 0)
sb.AppendLine("Volume is bootable.");
else sb.AppendLine("Volume is not bootable.");
information = sb.ToString();
XmlFsType = new FileSystemType();
if(mdb.drVolBkUp > 0)
{
XmlFsType.BackupDate = DateHandlers.MacToDateTime(mdb.drVolBkUp);
XmlFsType.BackupDateSpecified = true;
}
XmlFsType.Bootable = bb.signature == HFSBB_MAGIC || mdb.drFndrInfo0 != 0 || mdb.drFndrInfo3 != 0 ||
mdb.drFndrInfo5 != 0;
XmlFsType.Clusters = mdb.drNmAlBlks;
XmlFsType.ClusterSize = mdb.drAlBlkSiz;
if(mdb.drCrDate > 0)
{
XmlFsType.CreationDate = DateHandlers.MacToDateTime(mdb.drCrDate);
XmlFsType.CreationDateSpecified = true;
}
XmlFsType.Dirty = (mdb.drAtrb & 0x100) != 0x100;
XmlFsType.Files = mdb.drFilCnt;
XmlFsType.FilesSpecified = true;
XmlFsType.FreeClusters = mdb.drFreeBks;
XmlFsType.FreeClustersSpecified = true;
if(mdb.drLsMod > 0)
{
XmlFsType.ModificationDate = DateHandlers.MacToDateTime(mdb.drLsMod);
XmlFsType.ModificationDateSpecified = true;
}
XmlFsType.Type = "HFS";
XmlFsType.VolumeName = StringHandlers.PascalToString(mdb.drVN, Encoding);
if(mdb.drFndrInfo6 != 0 && mdb.drFndrInfo7 != 0)
XmlFsType.VolumeSerial = $"{mdb.drFndrInfo6:X8}{mdb.drFndrInfo7:X8}";
}
static byte[] Read2048SectorAs512(IMediaImage imagePlugin, ulong lba)
{
ulong lba2K = lba / 4;
int remainder = (int)(lba % 4);
byte[] buffer = imagePlugin.ReadSector(lba2K);
byte[] sector = new byte[512];
Array.Copy(buffer, remainder * 512, sector, 0, 512);
return sector;
}
/// <summary>
/// Master Directory Block, should be sector 2 in volume
/// </summary>
[StructLayout(LayoutKind.Sequential, Pack = 1)]
struct HfsMasterDirectoryBlock // Should be sector 2 in volume
{
/// <summary>0x000, Signature, 0x4244</summary>
public readonly ushort drSigWord;
/// <summary>0x002, Volume creation date</summary>
public readonly uint drCrDate;
/// <summary>0x006, Volume last modification date</summary>
public readonly uint drLsMod;
/// <summary>0x00A, Volume attributes</summary>
public readonly ushort drAtrb;
/// <summary>0x00C, Files in root directory</summary>
public readonly ushort drNmFls;
/// <summary>0x00E, Start 512-byte sector of volume bitmap</summary>
public readonly ushort drVBMSt;
/// <summary>0x010, Allocation block to begin next allocation</summary>
public readonly ushort drAllocPtr;
/// <summary>0x012, Allocation blocks</summary>
public readonly ushort drNmAlBlks;
/// <summary>0x014, Bytes per allocation block</summary>
public readonly uint drAlBlkSiz;
/// <summary>0x018, Bytes to allocate when extending a file</summary>
public readonly uint drClpSiz;
/// <summary>0x01C, Start 512-byte sector of first allocation block</summary>
public readonly ushort drAlBlSt;
/// <summary>0x01E, CNID for next file</summary>
public readonly uint drNxtCNID;
/// <summary>0x022, Free allocation blocks</summary>
public readonly ushort drFreeBks;
/// <summary>0x024, Volume name (28 bytes)</summary>
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 28)]
public readonly byte[] drVN;
/// <summary>0x040, Volume last backup time</summary>
public readonly uint drVolBkUp;
/// <summary>0x044, Volume backup sequence number</summary>
public readonly ushort drVSeqNum;
/// <summary>0x046, Filesystem write count</summary>
public readonly uint drWrCnt;
/// <summary>0x04A, Bytes to allocate when extending the extents B-Tree</summary>
public readonly uint drXTClpSiz;
/// <summary>0x04E, Bytes to allocate when extending the catalog B-Tree</summary>
public readonly uint drCTClpSiz;
/// <summary>0x052, Number of directories in root directory</summary>
public readonly ushort drNmRtDirs;
/// <summary>0x054, Number of files in the volume</summary>
public readonly uint drFilCnt;
/// <summary>0x058, Number of directories in the volume</summary>
public readonly uint drDirCnt;
/// <summary>0x05C, finderInfo[0], CNID for bootable system's directory</summary>
public readonly uint drFndrInfo0;
/// <summary>0x060, finderInfo[1], CNID of the directory containing the boot application</summary>
public readonly uint drFndrInfo1;
/// <summary>0x064, finderInfo[2], CNID of the directory that should be opened on boot</summary>
public readonly uint drFndrInfo2;
/// <summary>0x068, finderInfo[3], CNID for Mac OS 8 or 9 directory</summary>
public readonly uint drFndrInfo3;
/// <summary>0x06C, finderInfo[4], Reserved</summary>
public readonly uint drFndrInfo4;
/// <summary>0x070, finderInfo[5], CNID for Mac OS X directory</summary>
public readonly uint drFndrInfo5;
/// <summary>0x074, finderInfo[6], first part of Mac OS X volume ID</summary>
public readonly uint drFndrInfo6;
/// <summary>0x078, finderInfo[7], second part of Mac OS X volume ID</summary>
public readonly uint drFndrInfo7;
// If wrapping HFS+
/// <summary>0x07C, Embedded volume signature, "H+" if HFS+ is embedded ignore following two fields if not</summary>
public readonly ushort drEmbedSigWord;
/// <summary>0x07E, Starting block number of embedded HFS+ volume</summary>
public readonly ushort xdrStABNt;
/// <summary>0x080, Allocation blocks used by embedded volume</summary>
public readonly ushort xdrNumABlks;
// If not
/// <summary>0x07C, Size in blocks of volume cache</summary>
public readonly ushort drVCSize;
/// <summary>0x07E, Size in blocks of volume bitmap cache</summary>
public readonly ushort drVBMCSize;
/// <summary>0x080, Size in blocks of volume common cache</summary>
public readonly ushort drCtlCSize;
// End of variable variables :D
/// <summary>
/// 0x082, Bytes in the extents B-Tree
/// 3 HFS extents following, 32 bits each
/// </summary>
public readonly uint drXTFlSize;
/// <summary>
/// 0x092, Bytes in the catalog B-Tree
/// 3 HFS extents following, 32 bits each
/// </summary>
public readonly uint drCTFlSize;
}
/// <summary>
/// Should be sectors 0 and 1 in volume, followed by boot code
/// </summary>
[StructLayout(LayoutKind.Sequential, Pack = 1)]
struct HfsBootBlock // Should be sectors 0 and 1 in volume
{
/// <summary>0x000, Signature, 0x4C4B if bootable</summary>
public readonly ushort signature;
/// <summary>0x002, Branch</summary>
public readonly uint branch;
/// <summary>0x007, Boot block version</summary>
public readonly ushort boot_version;
/// <summary>0x006, Boot block flags</summary>
public readonly short boot_flags;
/// <summary>0x00A, System file name (16 bytes)</summary>
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
public readonly byte[] system_name;
/// <summary>0x01A, Finder file name (16 bytes)</summary>
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
public readonly byte[] finder_name;
/// <summary>0x02A, Debugger file name (16 bytes)</summary>
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
public readonly byte[] debug_name;
/// <summary>0x03A, Disassembler file name (16 bytes)</summary>
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
public readonly byte[] disasm_name;
/// <summary>0x04A, Startup screen file name (16 bytes)</summary>
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
public readonly byte[] stupscr_name;
/// <summary>0x05A, First program to execute on boot (16 bytes)</summary>
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
public readonly byte[] bootup_name;
/// <summary>0x06A, Clipboard file name (16 bytes)</summary>
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
public readonly byte[] clipbrd_name;
/// <summary>0x07A, 1/4 of maximum opened at a time files</summary>
public readonly ushort max_files;
/// <summary>0x07C, Event queue size</summary>
public readonly ushort queue_size;
/// <summary>0x07E, Heap size on a Mac with 128KiB of RAM</summary>
public readonly uint heap_128k;
/// <summary>0x082, Heap size on a Mac with 256KiB of RAM</summary>
public readonly uint heap_256k;
/// <summary>0x086, Heap size on a Mac with 512KiB of RAM or more</summary>
public readonly uint heap_512k;
/// <summary>Padding</summary>
public readonly ushort padding;
/// <summary>Additional system heap space</summary>
public readonly uint heap_extra;
/// <summary>Fraction of RAM for system heap</summary>
public readonly uint heap_fract;
}
}
}

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DiscImageChef.Filesystems/AppleHFS/AppleHFS.cs Normal file
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// /***************************************************************************
// The Disc Image Chef
// ----------------------------------------------------------------------------
//
// Filename : AppleHFS.cs
// Author(s) : Natalia Portillo <claunia@claunia.com>
//
// Component : Apple Hierarchical File System plugin.
//
// --[ Description ] ----------------------------------------------------------
//
// Identifies the Apple Hierarchical File System and shows information.
//
// --[ License ] --------------------------------------------------------------
//
// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation; either version 2.1 of the
// License, or (at your option) any later version.
//
// This library 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, see <http://www.gnu.org/licenses/>.
//
// ----------------------------------------------------------------------------
// Copyright © 2011-2020 Natalia Portillo
// ****************************************************************************/
using System;
using System.Text;
using DiscImageChef.CommonTypes.Interfaces;
using Schemas;
namespace DiscImageChef.Filesystems
{
// Information from Inside Macintosh
// https://developer.apple.com/legacy/library/documentation/mac/pdf/Files/File_Manager.pdf
public partial class AppleHFS : IFilesystem
{
public FileSystemType XmlFsType { get; private set; }
public Encoding Encoding { get; private set; }
public string Name => "Apple Hierarchical File System";
public Guid Id => new Guid("36405F8D-0D26-6ECC-0BBB-1D5225FF404F");
public string Author => "Natalia Portillo";
}
}

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DiscImageChef.Filesystems/AppleHFS/Consts.cs Normal file
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// /***************************************************************************
// The Disc Image Chef
// ----------------------------------------------------------------------------
//
// Filename : AppleHFS.cs
// Author(s) : Natalia Portillo <claunia@claunia.com>
//
// Component : Apple Hierarchical File System plugin.
//
// --[ Description ] ----------------------------------------------------------
//
// Identifies the Apple Hierarchical File System and shows information.
//
// --[ License ] --------------------------------------------------------------
//
// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation; either version 2.1 of the
// License, or (at your option) any later version.
//
// This library 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, see <http://www.gnu.org/licenses/>.
//
// ----------------------------------------------------------------------------
// Copyright © 2011-2020 Natalia Portillo
// ****************************************************************************/
namespace DiscImageChef.Filesystems
{
// Information from Inside Macintosh
// https://developer.apple.com/legacy/library/documentation/mac/pdf/Files/File_Manager.pdf
public partial class AppleHFS
{
/// <summary>"BD", HFS magic</summary>
const ushort HFS_MAGIC = 0x4244;
/// <summary>"H+", HFS+ magic</summary>
const ushort HFSP_MAGIC = 0x482B;
/// <summary>"LK", HFS bootblock magic</summary>
const ushort HFSBB_MAGIC = 0x4C4B;
}
}

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DiscImageChef.Filesystems/AppleHFS/Info.cs Normal file
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// /***************************************************************************
// The Disc Image Chef
// ----------------------------------------------------------------------------
//
// Filename : AppleHFS.cs
// Author(s) : Natalia Portillo <claunia@claunia.com>
//
// Component : Apple Hierarchical File System plugin.
//
// --[ Description ] ----------------------------------------------------------
//
// Identifies the Apple Hierarchical File System and shows information.
//
// --[ License ] --------------------------------------------------------------
//
// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation; either version 2.1 of the
// License, or (at your option) any later version.
//
// This library 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, see <http://www.gnu.org/licenses/>.
//
// ----------------------------------------------------------------------------
// Copyright © 2011-2020 Natalia Portillo
// ****************************************************************************/
using System;
using System.Text;
using DiscImageChef.CommonTypes;
using DiscImageChef.CommonTypes.Interfaces;
using DiscImageChef.Helpers;
using Schemas;
namespace DiscImageChef.Filesystems
{
// Information from Inside Macintosh
// https://developer.apple.com/legacy/library/documentation/mac/pdf/Files/File_Manager.pdf
public partial class AppleHFS
{
public bool Identify(IMediaImage imagePlugin, Partition partition)
{
if(2 + partition.Start >= partition.End)
return false;
byte[] mdbSector;
ushort drSigWord;
if(imagePlugin.Info.SectorSize == 2352 ||
imagePlugin.Info.SectorSize == 2448 ||
imagePlugin.Info.SectorSize == 2048)
{
mdbSector = imagePlugin.ReadSectors(partition.Start, 2);
foreach(int offset in new[]
{
0, 0x200, 0x400, 0x600, 0x800, 0xA00
})
{
drSigWord = BigEndianBitConverter.ToUInt16(mdbSector, offset);
if(drSigWord != HFS_MAGIC)
continue;
drSigWord =
BigEndianBitConverter.ToUInt16(mdbSector, offset + 0x7C); // Seek to embedded HFS+ signature
return drSigWord != HFSP_MAGIC;
}
}
else
{
mdbSector = imagePlugin.ReadSector(2 + partition.Start);
drSigWord = BigEndianBitConverter.ToUInt16(mdbSector, 0);
if(drSigWord != HFS_MAGIC)
return false;
drSigWord = BigEndianBitConverter.ToUInt16(mdbSector, 0x7C); // Seek to embedded HFS+ signature
return drSigWord != HFSP_MAGIC;
}
return false;
}
public void GetInformation(IMediaImage imagePlugin, Partition partition, out string information,
Encoding encoding)
{
Encoding = encoding ?? Encoding.GetEncoding("macintosh");
information = "";
var sb = new StringBuilder();
byte[] bbSector = null;
byte[] mdbSector = null;
ushort drSigWord;
bool apmFromHddOnCd = false;
if(imagePlugin.Info.SectorSize == 2352 ||
imagePlugin.Info.SectorSize == 2448 ||
imagePlugin.Info.SectorSize == 2048)
{
byte[] tmpSector = imagePlugin.ReadSectors(partition.Start, 2);
foreach(int offset in new[]
{
0, 0x200, 0x400, 0x600, 0x800, 0xA00
})
{
drSigWord = BigEndianBitConverter.ToUInt16(tmpSector, offset);
if(drSigWord != HFS_MAGIC)
continue;
bbSector = new byte[1024];
mdbSector = new byte[512];
if(offset >= 0x400)
Array.Copy(tmpSector, offset - 0x400, bbSector, 0, 1024);
Array.Copy(tmpSector, offset, mdbSector, 0, 512);
apmFromHddOnCd = true;
break;
}
if(!apmFromHddOnCd)
return;
}
else
{
mdbSector = imagePlugin.ReadSector(2 + partition.Start);
drSigWord = BigEndianBitConverter.ToUInt16(mdbSector, 0);
if(drSigWord == HFS_MAGIC)
bbSector = imagePlugin.ReadSector(partition.Start);
else
return;
}
HfsMasterDirectoryBlock mdb = Marshal.ByteArrayToStructureBigEndian<HfsMasterDirectoryBlock>(mdbSector);
HfsBootBlock bb = Marshal.ByteArrayToStructureBigEndian<HfsBootBlock>(bbSector);
sb.AppendLine("Apple Hierarchical File System");
sb.AppendLine();
if(apmFromHddOnCd)
sb.AppendLine("HFS uses 512 bytes/sector while device uses 2048 bytes/sector.").AppendLine();
sb.AppendLine("Master Directory Block:");
sb.AppendFormat("Creation date: {0}", DateHandlers.MacToDateTime(mdb.drCrDate)).AppendLine();
sb.AppendFormat("Last modification date: {0}", DateHandlers.MacToDateTime(mdb.drLsMod)).AppendLine();
if(mdb.drVolBkUp > 0)
{
sb.AppendFormat("Last backup date: {0}", DateHandlers.MacToDateTime(mdb.drVolBkUp)).AppendLine();
sb.AppendFormat("Backup sequence number: {0}", mdb.drVSeqNum).AppendLine();
}
else
sb.AppendLine("Volume has never been backed up");
if((mdb.drAtrb & 0x80) == 0x80)
sb.AppendLine("Volume is locked by hardware.");
sb.AppendLine((mdb.drAtrb & 0x100) == 0x100 ? "Volume was unmonted." : "Volume is mounted.");
if((mdb.drAtrb & 0x200) == 0x200)
sb.AppendLine("Volume has spared bad blocks.");
if((mdb.drAtrb & 0x400) == 0x400)
sb.AppendLine("Volume does not need cache.");
if((mdb.drAtrb & 0x800) == 0x800)
sb.AppendLine("Boot volume is inconsistent.");
if((mdb.drAtrb & 0x1000) == 0x1000)
sb.AppendLine("There are reused CNIDs.");
if((mdb.drAtrb & 0x2000) == 0x2000)
sb.AppendLine("Volume is journaled.");
if((mdb.drAtrb & 0x4000) == 0x4000)
sb.AppendLine("Volume is seriously inconsistent.");
if((mdb.drAtrb & 0x8000) == 0x8000)
sb.AppendLine("Volume is locked by software.");
sb.AppendFormat("{0} files on root directory", mdb.drNmFls).AppendLine();
sb.AppendFormat("{0} directories on root directory", mdb.drNmRtDirs).AppendLine();
sb.AppendFormat("{0} files on volume", mdb.drFilCnt).AppendLine();
sb.AppendFormat("{0} directories on volume", mdb.drDirCnt).AppendLine();
sb.AppendFormat("Volume write count: {0}", mdb.drWrCnt).AppendLine();
sb.AppendFormat("Volume bitmap starting sector (in 512-bytes): {0}", mdb.drVBMSt).AppendLine();
sb.AppendFormat("Next allocation block: {0}.", mdb.drAllocPtr).AppendLine();
sb.AppendFormat("{0} volume allocation blocks.", mdb.drNmAlBlks).AppendLine();
sb.AppendFormat("{0} bytes per allocation block.", mdb.drAlBlkSiz).AppendLine();
sb.AppendFormat("{0} bytes to allocate when extending a file.", mdb.drClpSiz).AppendLine();
sb.AppendFormat("{0} bytes to allocate when extending a Extents B-Tree.", mdb.drXTClpSiz).AppendLine();
sb.AppendFormat("{0} bytes to allocate when extending a Catalog B-Tree.", mdb.drCTClpSiz).AppendLine();
sb.AppendFormat("Sector of first allocation block: {0}", mdb.drAlBlSt).AppendLine();
sb.AppendFormat("Next unused CNID: {0}", mdb.drNxtCNID).AppendLine();
sb.AppendFormat("{0} unused allocation blocks.", mdb.drFreeBks).AppendLine();
sb.AppendFormat("{0} bytes in the Extents B-Tree", mdb.drXTFlSize).AppendLine();
sb.AppendFormat("{0} bytes in the Catalog B-Tree", mdb.drCTFlSize).AppendLine();
sb.AppendFormat("Volume name: {0}", StringHandlers.PascalToString(mdb.drVN, Encoding)).AppendLine();
sb.AppendLine("Finder info:");
sb.AppendFormat("CNID of bootable system's directory: {0}", mdb.drFndrInfo0).AppendLine();
sb.AppendFormat("CNID of first-run application's directory: {0}", mdb.drFndrInfo1).AppendLine();
sb.AppendFormat("CNID of previously opened directory: {0}", mdb.drFndrInfo2).AppendLine();
sb.AppendFormat("CNID of bootable Mac OS 8 or 9 directory: {0}", mdb.drFndrInfo3).AppendLine();
sb.AppendFormat("CNID of bootable Mac OS X directory: {0}", mdb.drFndrInfo5).AppendLine();
if(mdb.drFndrInfo6 != 0 &&
mdb.drFndrInfo7 != 0)
sb.AppendFormat("Mac OS X Volume ID: {0:X8}{1:X8}", mdb.drFndrInfo6, mdb.drFndrInfo7).AppendLine();
if(mdb.drEmbedSigWord == HFSP_MAGIC)
{
sb.AppendLine("Volume wraps a HFS+ volume.");
sb.AppendFormat("Starting block of the HFS+ volume: {0}", mdb.xdrStABNt).AppendLine();
sb.AppendFormat("Allocations blocks of the HFS+ volume: {0}", mdb.xdrNumABlks).AppendLine();
}
else
{
sb.AppendFormat("{0} blocks in volume cache", mdb.drVCSize).AppendLine();
sb.AppendFormat("{0} blocks in volume bitmap cache", mdb.drVBMCSize).AppendLine();
sb.AppendFormat("{0} blocks in volume common cache", mdb.drCtlCSize).AppendLine();
}
if(bb.signature == HFSBB_MAGIC)
{
sb.AppendLine("Volume is bootable.");
sb.AppendLine();
sb.AppendLine("Boot Block:");
if((bb.boot_flags & 0x40) == 0x40)
sb.AppendLine("Boot block should be executed.");
if((bb.boot_flags & 0x80) == 0x80)
sb.AppendLine("Boot block is in new unknown format.");
else
{
if(bb.boot_flags > 0)
sb.AppendLine("Allocate secondary sound buffer at boot.");
else if(bb.boot_flags < 0)
sb.AppendLine("Allocate secondary sound and video buffers at boot.");
sb.AppendFormat("System filename: {0}", StringHandlers.PascalToString(bb.system_name, Encoding)).
AppendLine();
sb.AppendFormat("Finder filename: {0}", StringHandlers.PascalToString(bb.finder_name, Encoding)).
AppendLine();
sb.AppendFormat("Debugger filename: {0}", StringHandlers.PascalToString(bb.debug_name, Encoding)).
AppendLine();
sb.AppendFormat("Disassembler filename: {0}",
StringHandlers.PascalToString(bb.disasm_name, Encoding)).AppendLine();
sb.AppendFormat("Startup screen filename: {0}",
StringHandlers.PascalToString(bb.stupscr_name, Encoding)).AppendLine();
sb.AppendFormat("First program to execute at boot: {0}",
StringHandlers.PascalToString(bb.bootup_name, Encoding)).AppendLine();
sb.AppendFormat("Clipboard filename: {0}",
StringHandlers.PascalToString(bb.clipbrd_name, Encoding)).AppendLine();
sb.AppendFormat("Maximum opened files: {0}", bb.max_files * 4).AppendLine();
sb.AppendFormat("Event queue size: {0}", bb.queue_size).AppendLine();
sb.AppendFormat("Heap size with 128KiB of RAM: {0} bytes", bb.heap_128k).AppendLine();
sb.AppendFormat("Heap size with 256KiB of RAM: {0} bytes", bb.heap_256k).AppendLine();
sb.AppendFormat("Heap size with 512KiB of RAM or more: {0} bytes", bb.heap_512k).AppendLine();
}
}
else if(mdb.drFndrInfo0 != 0 ||
mdb.drFndrInfo3 != 0 ||
mdb.drFndrInfo5 != 0)
sb.AppendLine("Volume is bootable.");
else
sb.AppendLine("Volume is not bootable.");
information = sb.ToString();
XmlFsType = new FileSystemType();
if(mdb.drVolBkUp > 0)
{
XmlFsType.BackupDate = DateHandlers.MacToDateTime(mdb.drVolBkUp);
XmlFsType.BackupDateSpecified = true;
}
XmlFsType.Bootable = bb.signature == HFSBB_MAGIC || mdb.drFndrInfo0 != 0 || mdb.drFndrInfo3 != 0 ||
mdb.drFndrInfo5 != 0;
XmlFsType.Clusters = mdb.drNmAlBlks;
XmlFsType.ClusterSize = mdb.drAlBlkSiz;
if(mdb.drCrDate > 0)
{
XmlFsType.CreationDate = DateHandlers.MacToDateTime(mdb.drCrDate);
XmlFsType.CreationDateSpecified = true;
}
XmlFsType.Dirty = (mdb.drAtrb & 0x100) != 0x100;
XmlFsType.Files = mdb.drFilCnt;
XmlFsType.FilesSpecified = true;
XmlFsType.FreeClusters = mdb.drFreeBks;
XmlFsType.FreeClustersSpecified = true;
if(mdb.drLsMod > 0)
{
XmlFsType.ModificationDate = DateHandlers.MacToDateTime(mdb.drLsMod);
XmlFsType.ModificationDateSpecified = true;
}
XmlFsType.Type = "HFS";
XmlFsType.VolumeName = StringHandlers.PascalToString(mdb.drVN, Encoding);
if(mdb.drFndrInfo6 != 0 &&
mdb.drFndrInfo7 != 0)
XmlFsType.VolumeSerial = $"{mdb.drFndrInfo6:X8}{mdb.drFndrInfo7:X8}";
}
}
}

181
DiscImageChef.Filesystems/AppleHFS/Structs.cs Normal file
View File

@@ -0,0 +1,181 @@
// /***************************************************************************
// The Disc Image Chef
// ----------------------------------------------------------------------------
//
// Filename : AppleHFS.cs
// Author(s) : Natalia Portillo <claunia@claunia.com>
//
// Component : Apple Hierarchical File System plugin.
//
// --[ Description ] ----------------------------------------------------------
//
// Identifies the Apple Hierarchical File System and shows information.
//
// --[ License ] --------------------------------------------------------------
//
// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation; either version 2.1 of the
// License, or (at your option) any later version.
//
// This library 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, see <http://www.gnu.org/licenses/>.
//
// ----------------------------------------------------------------------------
// Copyright © 2011-2020 Natalia Portillo
// ****************************************************************************/
using System.Runtime.InteropServices;
namespace DiscImageChef.Filesystems
{
// Information from Inside Macintosh
// https://developer.apple.com/legacy/library/documentation/mac/pdf/Files/File_Manager.pdf
public partial class AppleHFS
{
/// <summary>Should be sectors 0 and 1 in volume, followed by boot code</summary>
[StructLayout(LayoutKind.Sequential, Pack = 1)]
struct HfsBootBlock // Should be sectors 0 and 1 in volume
{
/// <summary>0x000, Signature, 0x4C4B if bootable</summary>
public readonly ushort signature;
/// <summary>0x002, Branch</summary>
public readonly uint branch;
/// <summary>0x007, Boot block version</summary>
public readonly ushort boot_version;
/// <summary>0x006, Boot block flags</summary>
public readonly short boot_flags;
/// <summary>0x00A, System file name (16 bytes)</summary>
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
public readonly byte[] system_name;
/// <summary>0x01A, Finder file name (16 bytes)</summary>
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
public readonly byte[] finder_name;
/// <summary>0x02A, Debugger file name (16 bytes)</summary>
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
public readonly byte[] debug_name;
/// <summary>0x03A, Disassembler file name (16 bytes)</summary>
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
public readonly byte[] disasm_name;
/// <summary>0x04A, Startup screen file name (16 bytes)</summary>
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
public readonly byte[] stupscr_name;
/// <summary>0x05A, First program to execute on boot (16 bytes)</summary>
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
public readonly byte[] bootup_name;
/// <summary>0x06A, Clipboard file name (16 bytes)</summary>
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
public readonly byte[] clipbrd_name;
/// <summary>0x07A, 1/4 of maximum opened at a time files</summary>
public readonly ushort max_files;
/// <summary>0x07C, Event queue size</summary>
public readonly ushort queue_size;
/// <summary>0x07E, Heap size on a Mac with 128KiB of RAM</summary>
public readonly uint heap_128k;
/// <summary>0x082, Heap size on a Mac with 256KiB of RAM</summary>
public readonly uint heap_256k;
/// <summary>0x086, Heap size on a Mac with 512KiB of RAM or more</summary>
public readonly uint heap_512k;
/// <summary>Padding</summary>
public readonly ushort padding;
/// <summary>Additional system heap space</summary>
public readonly uint heap_extra;
/// <summary>Fraction of RAM for system heap</summary>
public readonly uint heap_fract;
}
/// <summary>Master Directory Block, should be sector 2 in volume</summary>
[StructLayout(LayoutKind.Sequential, Pack = 1)]
struct HfsMasterDirectoryBlock // Should be sector 2 in volume
{
/// <summary>0x000, Signature, 0x4244</summary>
public readonly ushort drSigWord;
/// <summary>0x002, Volume creation date</summary>
public readonly uint drCrDate;
/// <summary>0x006, Volume last modification date</summary>
public readonly uint drLsMod;
/// <summary>0x00A, Volume attributes</summary>
public readonly ushort drAtrb;
/// <summary>0x00C, Files in root directory</summary>
public readonly ushort drNmFls;
/// <summary>0x00E, Start 512-byte sector of volume bitmap</summary>
public readonly ushort drVBMSt;
/// <summary>0x010, Allocation block to begin next allocation</summary>
public readonly ushort drAllocPtr;
/// <summary>0x012, Allocation blocks</summary>
public readonly ushort drNmAlBlks;
/// <summary>0x014, Bytes per allocation block</summary>
public readonly uint drAlBlkSiz;
/// <summary>0x018, Bytes to allocate when extending a file</summary>
public readonly uint drClpSiz;
/// <summary>0x01C, Start 512-byte sector of first allocation block</summary>
public readonly ushort drAlBlSt;
/// <summary>0x01E, CNID for next file</summary>
public readonly uint drNxtCNID;
/// <summary>0x022, Free allocation blocks</summary>
public readonly ushort drFreeBks;
/// <summary>0x024, Volume name (28 bytes)</summary>
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 28)]
public readonly byte[] drVN;
/// <summary>0x040, Volume last backup time</summary>
public readonly uint drVolBkUp;
/// <summary>0x044, Volume backup sequence number</summary>
public readonly ushort drVSeqNum;
/// <summary>0x046, Filesystem write count</summary>
public readonly uint drWrCnt;
/// <summary>0x04A, Bytes to allocate when extending the extents B-Tree</summary>
public readonly uint drXTClpSiz;
/// <summary>0x04E, Bytes to allocate when extending the catalog B-Tree</summary>
public readonly uint drCTClpSiz;
/// <summary>0x052, Number of directories in root directory</summary>
public readonly ushort drNmRtDirs;
/// <summary>0x054, Number of files in the volume</summary>
public readonly uint drFilCnt;
/// <summary>0x058, Number of directories in the volume</summary>
public readonly uint drDirCnt;
/// <summary>0x05C, finderInfo[0], CNID for bootable system's directory</summary>
public readonly uint drFndrInfo0;
/// <summary>0x060, finderInfo[1], CNID of the directory containing the boot application</summary>
public readonly uint drFndrInfo1;
/// <summary>0x064, finderInfo[2], CNID of the directory that should be opened on boot</summary>
public readonly uint drFndrInfo2;
/// <summary>0x068, finderInfo[3], CNID for Mac OS 8 or 9 directory</summary>
public readonly uint drFndrInfo3;
/// <summary>0x06C, finderInfo[4], Reserved</summary>
public readonly uint drFndrInfo4;
/// <summary>0x070, finderInfo[5], CNID for Mac OS X directory</summary>
public readonly uint drFndrInfo5;
/// <summary>0x074, finderInfo[6], first part of Mac OS X volume ID</summary>
public readonly uint drFndrInfo6;
/// <summary>0x078, finderInfo[7], second part of Mac OS X volume ID</summary>
public readonly uint drFndrInfo7;
// If wrapping HFS+
/// <summary>0x07C, Embedded volume signature, "H+" if HFS+ is embedded ignore following two fields if not</summary>
public readonly ushort drEmbedSigWord;
/// <summary>0x07E, Starting block number of embedded HFS+ volume</summary>
public readonly ushort xdrStABNt;
/// <summary>0x080, Allocation blocks used by embedded volume</summary>
public readonly ushort xdrNumABlks;
// If not
/// <summary>0x07C, Size in blocks of volume cache</summary>
public readonly ushort drVCSize;
/// <summary>0x07E, Size in blocks of volume bitmap cache</summary>
public readonly ushort drVBMCSize;
/// <summary>0x080, Size in blocks of volume common cache</summary>
public readonly ushort drCtlCSize;
// End of variable variables :D
/// <summary>0x082, Bytes in the extents B-Tree 3 HFS extents following, 32 bits each</summary>
public readonly uint drXTFlSize;
/// <summary>0x092, Bytes in the catalog B-Tree 3 HFS extents following, 32 bits each</summary>
public readonly uint drCTFlSize;
}
}
}

5
DiscImageChef.Filesystems/DiscImageChef.Filesystems.csproj
View File

@@ -54,6 +54,10 @@
<PackageReference Include="Unclassified.NetRevisionTask" Version="0.3.0" />
</ItemGroup>
<ItemGroup>
<Compile Include="AppleHFS\AppleHFS.cs" />
<Compile Include="AppleHFS\Consts.cs" />
<Compile Include="AppleHFS\Info.cs" />
<Compile Include="AppleHFS\Structs.cs" />
<Compile Include="FATX\Consts.cs" />
<Compile Include="FATX\Dir.cs" />
<Compile Include="FATX\FATX.cs" />
@@ -88,7 +92,6 @@
<Compile Include="Opera\Super.cs" />
<Compile Include="PCFX.cs" />
<Compile Include="AmigaDOS.cs" />
<Compile Include="AppleHFS.cs" />
<Compile Include="AppleHFSPlus.cs" />
<Compile Include="BFS.cs" />
<Compile Include="ext2FS.cs" />