diff --git a/DiscImageChef.Filesystems/AODOS.cs b/DiscImageChef.Filesystems/AODOS.cs new file mode 100644 index 000000000..0fdf0844d --- /dev/null +++ b/DiscImageChef.Filesystems/AODOS.cs @@ -0,0 +1,218 @@ +// /*************************************************************************** +// The Disc Image Chef +// ---------------------------------------------------------------------------- +// +// Filename : AODOS.cs +// Author(s) : Natalia Portillo +// +// Component : Commodore file system plugin. +// +// --[ Description ] ---------------------------------------------------------- +// +// Identifies the AO-DOS 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 . +// +// ---------------------------------------------------------------------------- +// Copyright © 2011-2017 Natalia Portillo +// ****************************************************************************/ + +using System; +using System.Collections.Generic; +using System.Runtime.InteropServices; +using System.Text; +using DiscImageChef.CommonTypes; +using System.Linq; + +namespace DiscImageChef.Filesystems +{ + // Information has been extracted looking at available disk images + // This may be missing fields, or not, I don't know russian so any help is appreciated + public class AODOS : Filesystem + { + public AODOS() + { + Name = "Alexander Osipov DOS file system"; + PluginUUID = new Guid("668E5039-9DDD-442A-BE1B-A315D6E38E26"); + CurrentEncoding = Encoding.GetEncoding("koi8-r"); + } + + public AODOS(ImagePlugins.ImagePlugin imagePlugin, Partition partition, Encoding encoding) + { + Name = "Alexander Osipov DOS file system"; + PluginUUID = new Guid("668E5039-9DDD-442A-BE1B-A315D6E38E26"); + CurrentEncoding = Encoding.GetEncoding("koi8-r"); + } + + [StructLayout(LayoutKind.Sequential, Pack = 1)] + struct AODOS_BootBlock + { + /// + /// A NOP opcode + /// + public byte nop; + /// + /// A branch to real bootloader + /// + public ushort branch; + /// + /// Unused + /// + public byte unused; + /// + /// " AO-DOS " + /// + [MarshalAs(UnmanagedType.ByValArray, SizeConst = 8)] + public byte[] identifier; + /// + /// Volume label + /// + [MarshalAs(UnmanagedType.ByValArray, SizeConst = 12)] + public byte[] volumeLabel; + /// + /// How many files are present in disk + /// + public ushort files; + /// + /// How many sectors are used + /// + public ushort usedSectors; + } + + readonly byte[] AODOSIdentifier = { 0x20, 0x41, 0x4F, 0x2D, 0x44, 0x4F, 0x53, 0x20 }; + + public override bool Identify(ImagePlugins.ImagePlugin imagePlugin, Partition partition) + { + // Does AO-DOS support hard disks? + if(partition.Start > 0) + return false; + + // How is it really? + if(imagePlugin.ImageInfo.sectorSize != 512) + return false; + + // Does AO-DOS support any other kind of disk? + if(imagePlugin.ImageInfo.sectors != 800 && imagePlugin.ImageInfo.sectors != 1600) + return false; + + byte[] sector; + + sector = imagePlugin.ReadSector(0); + AODOS_BootBlock bb = new AODOS_BootBlock(); + IntPtr bbPtr = Marshal.AllocHGlobal(Marshal.SizeOf(bb)); + Marshal.Copy(sector, 0, bbPtr, Marshal.SizeOf(bb)); + bb = (AODOS_BootBlock)Marshal.PtrToStructure(bbPtr, typeof(AODOS_BootBlock)); + Marshal.FreeHGlobal(bbPtr); + + return bb.identifier.SequenceEqual(AODOSIdentifier); + } + + public override void GetInformation(ImagePlugins.ImagePlugin imagePlugin, Partition partition, out string information) + { + byte[] sector; + + sector = imagePlugin.ReadSector(0); + AODOS_BootBlock bb = new AODOS_BootBlock(); + IntPtr bbPtr = Marshal.AllocHGlobal(Marshal.SizeOf(bb)); + Marshal.Copy(sector, 0, bbPtr, Marshal.SizeOf(bb)); + bb = (AODOS_BootBlock)Marshal.PtrToStructure(bbPtr, typeof(AODOS_BootBlock)); + Marshal.FreeHGlobal(bbPtr); + + StringBuilder sbInformation = new StringBuilder(); + + sbInformation.AppendLine("Alexander Osipov DOS file system"); + + xmlFSType = new Schemas.FileSystemType + { + Type = "Alexander Osipov DOS file system", + Clusters = (long)imagePlugin.ImageInfo.sectors, + ClusterSize = (int)imagePlugin.ImageInfo.sectorSize, + Files = bb.files, + FilesSpecified = true, + FreeClusters = (long)(imagePlugin.ImageInfo.sectors - bb.usedSectors), + FreeClustersSpecified = true, + VolumeName = StringHandlers.SpacePaddedToString(bb.volumeLabel, CurrentEncoding), + Bootable = true + }; + + sbInformation.AppendFormat("{0} files on volume", bb.files).AppendLine(); + sbInformation.AppendFormat("{0} used sectors on volume", bb.usedSectors).AppendLine(); + sbInformation.AppendFormat("Disk name: {0}", StringHandlers.CToString(bb.volumeLabel, CurrentEncoding)).AppendLine(); + + information = sbInformation.ToString(); + } + + 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 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 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; + } + } +} \ No newline at end of file diff --git a/DiscImageChef.Filesystems/DiscImageChef.Filesystems.csproj b/DiscImageChef.Filesystems/DiscImageChef.Filesystems.csproj index 2f5a56845..e1254fea5 100644 --- a/DiscImageChef.Filesystems/DiscImageChef.Filesystems.csproj +++ b/DiscImageChef.Filesystems/DiscImageChef.Filesystems.csproj @@ -131,6 +131,7 @@ + diff --git a/README.md b/README.md index 21f3fcc66..4ed7d03e8 100644 --- a/README.md +++ b/README.md @@ -112,6 +112,7 @@ Supported file systems for identification and information only ============================================================== * 3DO Opera file system * Acorn Advanced Disc Filing System +* Alexander Osipov DOS (AO-DOS for Electronika BK-0011) file system * Amiga Fast File System v2, untested * Amiga Fast File System, with international characters, directory cache and multi-user patches * Amiga Original File System, with international characters, directory cache and multi-user patches