mirror of
https://github.com/aaru-dps/Aaru.Server.git
synced 2025-12-16 19:24:27 +00:00
290 lines
11 KiB
C#
290 lines
11 KiB
C#
// /***************************************************************************
|
|
// The Disc Image Chef
|
|
// ----------------------------------------------------------------------------
|
|
//
|
|
// Filename : Acorn.cs
|
|
// Author(s) : Natalia Portillo <claunia@claunia.com>
|
|
//
|
|
// Component : Acorn filesystem plugin.
|
|
//
|
|
// --[ Description ] ----------------------------------------------------------
|
|
//
|
|
// Identifies the Acorn filesystem 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 © 2011-2017 Natalia Portillo
|
|
// ****************************************************************************/
|
|
|
|
using System;
|
|
using System.Collections.Generic;
|
|
using System.Runtime.InteropServices;
|
|
using System.Text;
|
|
using DiscImageChef.Console;
|
|
|
|
namespace DiscImageChef.Filesystems
|
|
{
|
|
class AcornADFS : Filesystem
|
|
{
|
|
const ulong ADFS_SB_POS = 0xC00;
|
|
|
|
public AcornADFS()
|
|
{
|
|
Name = "Acorn Advanced Disc Filing System";
|
|
PluginUUID = new Guid("BAFC1E50-9C64-4CD3-8400-80628CC27AFA");
|
|
}
|
|
|
|
public AcornADFS(ImagePlugins.ImagePlugin imagePlugin, ulong partitionStart, ulong partitionEnd)
|
|
{
|
|
Name = "Acorn Advanced Disc Filing System";
|
|
PluginUUID = new Guid("BAFC1E50-9C64-4CD3-8400-80628CC27AFA");
|
|
}
|
|
|
|
[StructLayout(LayoutKind.Sequential)]
|
|
struct DiscRecord
|
|
{
|
|
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 0x1C0)]
|
|
public byte[] spare;
|
|
public byte log2secsize;
|
|
public byte spt;
|
|
public byte heads;
|
|
public byte density;
|
|
public byte idlen;
|
|
public byte log2bpmb;
|
|
public byte skew;
|
|
public byte bootoption;
|
|
public byte lowsector;
|
|
public byte nzones;
|
|
public ushort zone_spare;
|
|
public uint root;
|
|
public uint disc_size;
|
|
public ushort disc_id;
|
|
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 10)]
|
|
public byte[] disc_name;
|
|
public uint disc_type;
|
|
public uint disc_size_high;
|
|
public byte flags;
|
|
public byte nzones_high;
|
|
public uint format_version;
|
|
public uint root_size;
|
|
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 8)]
|
|
public byte[] reserved;
|
|
}
|
|
|
|
public override bool Identify(ImagePlugins.ImagePlugin imagePlugin, ulong partitionStart, ulong partitionEnd)
|
|
{
|
|
if(partitionStart >= partitionEnd)
|
|
return false;
|
|
|
|
ulong sbSector;
|
|
|
|
if(imagePlugin.GetSectorSize() > ADFS_SB_POS)
|
|
sbSector = 0;
|
|
else
|
|
sbSector = ADFS_SB_POS / imagePlugin.GetSectorSize();
|
|
|
|
byte[] sector = imagePlugin.ReadSector(sbSector + partitionStart);
|
|
DiscRecord drSb;
|
|
|
|
try
|
|
{
|
|
GCHandle handle = GCHandle.Alloc(sector, GCHandleType.Pinned);
|
|
drSb = (DiscRecord)Marshal.PtrToStructure(handle.AddrOfPinnedObject(), typeof(DiscRecord));
|
|
handle.Free();
|
|
}
|
|
catch
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if(drSb.log2secsize < 8 || drSb.log2secsize > 10)
|
|
return false;
|
|
|
|
if(drSb.idlen < (drSb.log2secsize + 3) || drSb.idlen > 19)
|
|
return false;
|
|
|
|
if((drSb.disc_size_high >> drSb.log2secsize) != 0)
|
|
return false;
|
|
|
|
if(!ArrayHelpers.ArrayIsNullOrEmpty(drSb.reserved))
|
|
return false;
|
|
|
|
ulong bytes = drSb.disc_size_high;
|
|
bytes *= 0x100000000;
|
|
bytes += drSb.disc_size;
|
|
|
|
if(bytes > (imagePlugin.GetSectors() * imagePlugin.GetSectorSize()))
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
public override void GetInformation(ImagePlugins.ImagePlugin imagePlugin, ulong partitionStart, ulong partitionEnd, out string information)
|
|
{
|
|
StringBuilder sbInformation = new StringBuilder();
|
|
xmlFSType = new Schemas.FileSystemType();
|
|
information = "";
|
|
|
|
ulong sbSector;
|
|
|
|
if(imagePlugin.GetSectorSize() > ADFS_SB_POS)
|
|
sbSector = 0;
|
|
else
|
|
sbSector = ADFS_SB_POS / imagePlugin.GetSectorSize();
|
|
|
|
byte[] sector = imagePlugin.ReadSector(sbSector + partitionStart);
|
|
|
|
GCHandle handle = GCHandle.Alloc(sector, GCHandleType.Pinned);
|
|
DiscRecord drSb = (DiscRecord)Marshal.PtrToStructure(handle.AddrOfPinnedObject(), typeof(DiscRecord));
|
|
handle.Free();
|
|
|
|
DicConsole.DebugWriteLine("ADFS Plugin", "drSb.log2secsize = {0}", drSb.log2secsize);
|
|
DicConsole.DebugWriteLine("ADFS Plugin", "drSb.spt = {0}", drSb.spt);
|
|
DicConsole.DebugWriteLine("ADFS Plugin", "drSb.heads = {0}", drSb.heads);
|
|
DicConsole.DebugWriteLine("ADFS Plugin", "drSb.density = {0}", drSb.density);
|
|
DicConsole.DebugWriteLine("ADFS Plugin", "drSb.idlen = {0}", drSb.idlen);
|
|
DicConsole.DebugWriteLine("ADFS Plugin", "drSb.log2bpmb = {0}", drSb.log2bpmb);
|
|
DicConsole.DebugWriteLine("ADFS Plugin", "drSb.skew = {0}", drSb.skew);
|
|
DicConsole.DebugWriteLine("ADFS Plugin", "drSb.bootoption = {0}", drSb.bootoption);
|
|
DicConsole.DebugWriteLine("ADFS Plugin", "drSb.lowsector = {0}", drSb.lowsector);
|
|
DicConsole.DebugWriteLine("ADFS Plugin", "drSb.nzones = {0}", drSb.nzones);
|
|
DicConsole.DebugWriteLine("ADFS Plugin", "drSb.zone_spare = {0}", drSb.zone_spare);
|
|
DicConsole.DebugWriteLine("ADFS Plugin", "drSb.root = {0}", drSb.root);
|
|
DicConsole.DebugWriteLine("ADFS Plugin", "drSb.disc_size = {0}", drSb.disc_size);
|
|
DicConsole.DebugWriteLine("ADFS Plugin", "drSb.disc_id = {0}", drSb.disc_id);
|
|
DicConsole.DebugWriteLine("ADFS Plugin", "drSb.disc_name = {0}", StringHandlers.CToString(drSb.disc_name));
|
|
DicConsole.DebugWriteLine("ADFS Plugin", "drSb.disc_type = {0}", drSb.disc_type);
|
|
DicConsole.DebugWriteLine("ADFS Plugin", "drSb.disc_size_high = {0}", drSb.disc_size_high);
|
|
DicConsole.DebugWriteLine("ADFS Plugin", "drSb.flags = {0}", drSb.flags);
|
|
DicConsole.DebugWriteLine("ADFS Plugin", "drSb.nzones_high = {0}", drSb.nzones_high);
|
|
DicConsole.DebugWriteLine("ADFS Plugin", "drSb.format_version = {0}", drSb.format_version);
|
|
DicConsole.DebugWriteLine("ADFS Plugin", "drSb.root_size = {0}", drSb.root_size);
|
|
|
|
if(drSb.log2secsize < 8 || drSb.log2secsize > 10)
|
|
return;
|
|
|
|
if(drSb.idlen < (drSb.log2secsize + 3) || drSb.idlen > 19)
|
|
return;
|
|
|
|
if((drSb.disc_size_high >> drSb.log2secsize) != 0)
|
|
return;
|
|
|
|
if(!ArrayHelpers.ArrayIsNullOrEmpty(drSb.reserved))
|
|
return;
|
|
|
|
ulong bytes = drSb.disc_size_high;
|
|
bytes *= 0x100000000;
|
|
bytes += drSb.disc_size;
|
|
|
|
ulong zones = drSb.nzones_high;
|
|
zones *= 0x100000000;
|
|
zones += drSb.nzones;
|
|
|
|
if(bytes > (imagePlugin.GetSectors() * imagePlugin.GetSectorSize()))
|
|
return;
|
|
|
|
string discname = StringHandlers.CToString(drSb.disc_name);
|
|
|
|
sbInformation.AppendLine("Acorn Advanced Disc Filing System");
|
|
sbInformation.AppendLine();
|
|
sbInformation.AppendFormat("Version {0}", drSb.format_version).AppendLine();
|
|
sbInformation.AppendFormat("{0} bytes per sector", 1 << drSb.log2secsize).AppendLine();
|
|
sbInformation.AppendFormat("{0} sectors per track", drSb.spt).AppendLine();
|
|
sbInformation.AppendFormat("{0} heads", drSb.heads).AppendLine();
|
|
sbInformation.AppendFormat("Density code: {0}", drSb.density).AppendLine();
|
|
sbInformation.AppendFormat("Skew: {0}", drSb.skew).AppendLine();
|
|
sbInformation.AppendFormat("Boot option: {0}", drSb.bootoption).AppendLine();
|
|
sbInformation.AppendFormat("Root starts at byte {0}", drSb.root).AppendLine();
|
|
sbInformation.AppendFormat("Root is {0} bytes long", drSb.root_size).AppendLine();
|
|
sbInformation.AppendFormat("Volume has {0} bytes in {1} zones", bytes, zones).AppendLine();
|
|
sbInformation.AppendFormat("Volume flags: 0x{0:X4}", drSb.flags).AppendLine();
|
|
sbInformation.AppendFormat("Volume ID: {0}", drSb.disc_id).AppendLine();
|
|
sbInformation.AppendFormat("Volume name: {0}", discname).AppendLine();
|
|
|
|
information = sbInformation.ToString();
|
|
|
|
xmlFSType = new Schemas.FileSystemType();
|
|
xmlFSType.Bootable |= drSb.bootoption != 0; // Or not?
|
|
xmlFSType.Clusters = (long)(bytes / (ulong)(1 << drSb.log2secsize));
|
|
xmlFSType.ClusterSize = (1 << drSb.log2secsize);
|
|
xmlFSType.Type = "Acorn Advanced Disc Filing System";
|
|
xmlFSType.VolumeName = discname;
|
|
xmlFSType.VolumeSerial = string.Format("{0}", drSb.disc_id);
|
|
}
|
|
|
|
public override Errno Mount()
|
|
{
|
|
return Errno.NotImplemented;
|
|
}
|
|
|
|
public override Errno Mount(bool debug)
|
|
{
|
|
return Errno.NotImplemented;
|
|
}
|
|
|
|
public override Errno Unmount()
|
|
{
|
|
return Errno.NotImplemented;
|
|
}
|
|
|
|
public override Errno MapBlock(string path, long fileBlock, ref long deviceBlock)
|
|
{
|
|
return Errno.NotImplemented;
|
|
}
|
|
|
|
public override Errno GetAttributes(string path, ref FileAttributes attributes)
|
|
{
|
|
return Errno.NotImplemented;
|
|
}
|
|
|
|
public override Errno ListXAttr(string path, ref List<string> xattrs)
|
|
{
|
|
return Errno.NotImplemented;
|
|
}
|
|
|
|
public override Errno GetXattr(string path, string xattr, ref byte[] buf)
|
|
{
|
|
return Errno.NotImplemented;
|
|
}
|
|
|
|
public override Errno Read(string path, long offset, long size, ref byte[] buf)
|
|
{
|
|
return Errno.NotImplemented;
|
|
}
|
|
|
|
public override Errno ReadDir(string path, ref List<string> contents)
|
|
{
|
|
return Errno.NotImplemented;
|
|
}
|
|
|
|
public override Errno StatFs(ref FileSystemInfo stat)
|
|
{
|
|
return Errno.NotImplemented;
|
|
}
|
|
|
|
public override Errno Stat(string path, ref FileEntryInfo stat)
|
|
{
|
|
return Errno.NotImplemented;
|
|
}
|
|
|
|
public override Errno ReadLink(string path, ref string dest)
|
|
{
|
|
return Errno.NotImplemented;
|
|
}
|
|
}
|
|
}
|
|
|