Added RT-11 filesystem.

DiscImageChef.Filesystems/DiscImageChef.Filesystems.csproj

@@ -132,6 +132,7 @@
     <Compile Include="UNICOS.cs" />
     <Compile Include="RBF.cs" />
     <Compile Include="AODOS.cs" />
+    <Compile Include="RT11.cs" />
   </ItemGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
   <ItemGroup>
@@ -189,7 +190,7 @@
       <Properties>
         <Policies>
           <TextStylePolicy FileWidth="120" TabWidth="4" IndentWidth="4" RemoveTrailingWhitespace="True" NoTabsAfterNonTabs="False" EolMarker="Native" TabsToSpaces="True" scope="text/x-csharp" />
-          <CSharpFormattingPolicy IndentBlock="True" IndentBraces="False" IndentSwitchSection="True" IndentSwitchCaseSection="True" LabelPositioning="OneLess" NewLinesForBracesInTypes="True" NewLinesForBracesInMethods="True" NewLinesForBracesInProperties="True" NewLinesForBracesInAccessors="True" NewLinesForBracesInAnonymousMethods="True" NewLinesForBracesInControlBlocks="True" NewLinesForBracesInAnonymousTypes="True" NewLinesForBracesInObjectCollectionArrayInitializers="True" NewLinesForBracesInLambdaExpressionBody="True" NewLineForElse="True" NewLineForCatch="True" NewLineForFinally="True" NewLineForMembersInObjectInit="True" NewLineForMembersInAnonymousTypes="True" NewLineForClausesInQuery="True" SpacingAfterMethodDeclarationName="False" SpaceWithinMethodDeclarationParenthesis="False" SpaceBetweenEmptyMethodDeclarationParentheses="False" SpaceAfterMethodCallName="False" SpaceWithinMethodCallParentheses="False" SpaceBetweenEmptyMethodCallParentheses="False" SpaceWithinExpressionParentheses="False" SpaceWithinCastParentheses="False" SpaceWithinOtherParentheses="False" SpaceAfterCast="False" SpacesIgnoreAroundVariableDeclaration="False" SpaceBeforeOpenSquareBracket="False" SpaceBetweenEmptySquareBrackets="False" SpaceWithinSquareBrackets="False" SpaceAfterColonInBaseTypeDeclaration="True" SpaceAfterComma="True" SpaceAfterDot="False" SpaceAfterSemicolonsInForStatement="True" SpaceBeforeColonInBaseTypeDeclaration="True" SpaceBeforeComma="False" SpaceBeforeDot="False" SpaceBeforeSemicolonsInForStatement="False" SpacingAroundBinaryOperator="Single" WrappingPreserveSingleLine="True" WrappingKeepStatementsOnSingleLine="True" PlaceSystemDirectiveFirst="True" SpaceAfterControlFlowStatementKeyword="False" scope="text/x-csharp" />
+          <CSharpFormattingPolicy IndentBlock="True" IndentBraces="False" IndentSwitchSection="True" IndentSwitchCaseSection="True" LabelPositioning="OneLess" NewLinesForBracesInTypes="True" NewLinesForBracesInMethods="True" NewLinesForBracesInProperties="True" NewLinesForBracesInAccessors="True" NewLinesForBracesInAnonymousMethods="True" NewLinesForBracesInControlBlocks="True" NewLinesForBracesInAnonymousTypes="True" NewLinesForBracesInObjectCollectionArrayInitializers="True" NewLinesForBracesInLambdaExpressionBody="True" NewLineForElse="True" NewLineForCatch="True" NewLineForFinally="True" NewLineForMembersInObjectInit="True" NewLineForMembersInAnonymousTypes="True" NewLineForClausesInQuery="True" SpacingAfterMethodDeclarationName="False" SpaceWithinMethodDeclarationParenthesis="False" SpaceBetweenEmptyMethodDeclarationParentheses="False" SpaceAfterMethodCallName="False" SpaceWithinMethodCallParentheses="False" SpaceBetweenEmptyMethodCallParentheses="False" SpaceAfterControlFlowStatementKeyword="False" SpaceWithinExpressionParentheses="False" SpaceWithinCastParentheses="False" SpaceWithinOtherParentheses="False" SpaceAfterCast="False" SpacesIgnoreAroundVariableDeclaration="False" SpaceBeforeOpenSquareBracket="False" SpaceBetweenEmptySquareBrackets="False" SpaceWithinSquareBrackets="False" SpaceAfterColonInBaseTypeDeclaration="True" SpaceAfterComma="True" SpaceAfterDot="False" SpaceAfterSemicolonsInForStatement="True" SpaceBeforeColonInBaseTypeDeclaration="True" SpaceBeforeComma="False" SpaceBeforeDot="False" SpaceBeforeSemicolonsInForStatement="False" SpacingAroundBinaryOperator="Single" WrappingPreserveSingleLine="True" WrappingKeepStatementsOnSingleLine="True" PlaceSystemDirectiveFirst="True" scope="text/x-csharp" />
           <DotNetNamingPolicy DirectoryNamespaceAssociation="PrefixedHierarchical" ResourceNamePolicy="MSBuild" />
           <StandardHeader IncludeInNewFiles="True" Text="/***************************************************************************&#xA;The Disc Image Chef&#xA;----------------------------------------------------------------------------&#xA; &#xA;Filename       : ${FileName}&#xA;Author(s)      : ${AuthorName} &lt;${AuthorEmail}&gt;&#xA;&#xA;Component      : Component&#xA; &#xA;--[ Description ] ----------------------------------------------------------&#xA; &#xA;    Description&#xA; &#xA;--[ License ] --------------------------------------------------------------&#xA; &#xA;    This library is free software; you can redistribute it and/or modify&#xA;    it under the terms of the GNU Lesser General Public License as&#xA;    published by the Free Software Foundation; either version 2.1 of the&#xA;    License, or (at your option) any later version.&#xA;&#xA;    This library is distributed in the hope that it will be useful, but&#xA;    WITHOUT ANY WARRANTY; without even the implied warranty of&#xA;    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU&#xA;    Lesser General Public License for more details.&#xA;&#xA;    You should have received a copy of the GNU Lesser General Public&#xA;    License along with this library; if not, see &lt;http://www.gnu.org/licenses/&gt;.&#xA;&#xA;----------------------------------------------------------------------------&#xA;Copyright © 2011-${Year} ${CopyrightHolder}&#xA;****************************************************************************/" />
         </Policies>

DiscImageChef.Filesystems/RT11.cs

@@ -0,0 +1,235 @@
+// /***************************************************************************
+// The Disc Image Chef
+// ----------------------------------------------------------------------------
+//
+// Filename       : RT11.cs
+// Author(s)      : Natalia Portillo <claunia@claunia.com>
+//
+// Component      : RT-11 file system plugin.
+//
+// --[ Description ] ----------------------------------------------------------
+//
+//     Identifies the RT-11 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 © 2011-2017 Natalia Portillo
+// ****************************************************************************/
+
+using System;
+using System.Collections.Generic;
+using System.Runtime.InteropServices;
+using System.Text;
+using DiscImageChef.CommonTypes;
+
+namespace DiscImageChef.Filesystems
+{
+    // Information from http://www.trailing-edge.com/~shoppa/rt11fs/
+    // TODO: Implement Radix-50
+    public class RT11 : Filesystem
+    {
+        public RT11()
+        {
+            Name = "RT-11 file system";
+            PluginUUID = new Guid("DB3E2F98-8F98-463C-8126-E937843DA024");
+            CurrentEncoding = Encoding.GetEncoding("iso-8859-1");
+        }
+
+        public RT11(ImagePlugins.ImagePlugin imagePlugin, Partition partition, Encoding encoding)
+        {
+            Name = "RT-11 file system";
+            PluginUUID = new Guid("DB3E2F98-8F98-463C-8126-E937843DA024");
+            if(encoding == null)
+                CurrentEncoding = Encoding.GetEncoding("iso-8859-1");
+            else
+                CurrentEncoding = encoding;
+        }
+
+        public override bool Identify(ImagePlugins.ImagePlugin imagePlugin, Partition partition)
+        {
+            if((1 + partition.Start) >= partition.End)
+                return false;
+
+            if(imagePlugin.GetSectorSize() < 512)
+                return false;
+
+            byte[] magic_b = new byte[12];
+            string magic;
+            byte[] hb_sector = imagePlugin.ReadSector(1 + partition.Start);
+
+            Array.Copy(hb_sector, 0x1F0, magic_b, 0, 12);
+            magic = Encoding.ASCII.GetString(magic_b);
+
+            return magic == "DECRT11A    ";
+        }
+
+        public override void GetInformation(ImagePlugins.ImagePlugin imagePlugin, Partition partition, out string information)
+        {
+            information = "";
+
+            StringBuilder sb = new StringBuilder();
+            RT11HomeBlock homeblock = new RT11HomeBlock();
+
+            byte[] hb_sector = imagePlugin.ReadSector(1 + partition.Start);
+
+            GCHandle handle = GCHandle.Alloc(hb_sector, GCHandleType.Pinned);
+            homeblock = (RT11HomeBlock)Marshal.PtrToStructure(handle.AddrOfPinnedObject(), typeof(RT11HomeBlock));
+            handle.Free();
+
+            /* TODO: Is this correct?
+             * Assembler:
+             *      MOV address, R0
+             *      CLR R1
+             *      MOV #255., R2
+             * 10$: ADD (R0)+, R1
+             *      SOB R2, 10$
+             *      MOV 1,@R0
+             */
+            ushort check = 0;
+            for(int i = 0; i < 512; i += 2)
+                check += BitConverter.ToUInt16(hb_sector, i);
+
+            sb.AppendFormat("Volume format is {0}", StringHandlers.SpacePaddedToString(homeblock.format, CurrentEncoding)).AppendLine();
+            sb.AppendFormat("{0} sectors per cluster ({1} bytes)", homeblock.cluster, homeblock.cluster * 512).AppendLine();
+            sb.AppendFormat("First directory segment starts at block {0}", homeblock.rootBlock).AppendLine();
+            sb.AppendFormat("Volume owner is \"{0}\"", StringHandlers.SpacePaddedToString(homeblock.ownername, CurrentEncoding)).AppendLine();
+            sb.AppendFormat("Volume label: \"{0}\"", StringHandlers.SpacePaddedToString(homeblock.volname, CurrentEncoding)).AppendLine();
+            sb.AppendFormat("Checksum: 0x{0:X4} (calculated 0x{1:X4})", homeblock.checksum, check).AppendLine();
+
+            byte[] bootBlock = imagePlugin.ReadSector(0);
+
+            xmlFSType = new Schemas.FileSystemType
+            {
+                Type = "RT-11",
+                ClusterSize = homeblock.cluster * 512,
+                Clusters = homeblock.cluster,
+                VolumeName = StringHandlers.SpacePaddedToString(homeblock.volname, CurrentEncoding),
+                Bootable = !ArrayHelpers.ArrayIsNullOrEmpty(bootBlock)
+            };
+
+            information = sb.ToString();
+        }
+
+        [StructLayout(LayoutKind.Sequential, Pack = 1)]
+        struct RT11HomeBlock
+        {
+            /// <summary>Bad block replacement table</summary>
+            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 130)]
+            public byte[] badBlockTable;
+            /// <summary>Unused</summary>
+            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 2)]
+            public byte[] unused;
+            /// <summary>INITIALIZE/RESTORE data area</summary>
+            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 38)]
+            public byte[] initArea;
+            /// <summary>BUP information area</summary>
+            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 18)]
+            public byte[] bupInformation;
+            /// <summary>Empty</summary>
+            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 260)]
+            public byte[] empty;
+            /// <summary>Reserved</summary>
+            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 2)]
+            public byte[] reserved1;
+            /// <summary>Reserved</summary>
+            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 2)]
+            public byte[] reserved2;
+            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 14)]
+            public byte[] empty2;
+            /// <summary>Cluster size</summary>
+            public ushort cluster;
+            /// <summary>Block of the first directory segment</summary>
+            public ushort rootBlock;
+            /// <summary>"V3A" in Radix-50</summary>
+            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 2)]
+            public byte[] systemVersion;
+            /// <summary>Name of the volume, 12 bytes</summary>
+            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 12)]
+            public byte[] volname;
+            /// <summary>Name of the volume owner, 12 bytes</summary>
+            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 12)]
+            public byte[] ownername;
+            /// <summary>RT11 defines it as "DECRT11A    ", 12 bytes</summary>
+            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 12)]
+            public byte[] format;
+            /// <summary>Unused</summary>
+            public ushort unused2;
+            /// <summary>Checksum of preceding 255 words (16 bit units)</summary>
+            public ushort checksum;
+        }
+
+        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;
+        }
+    }
+}

README.md

@@ -128,6 +128,7 @@ Supported file systems for identification and information only
 * Coherent UNIX file system
 * Commodore 1540/1541/1571/1581 filesystems
 * Cram file system
+* DEC RT-11 file system
 * DEC Files-11 (only checked with On Disk Structure 2, ODS-2)
 * ECMA-67: 130mm Flexible Disk Cartridge Labelling and File Structure for Information Interchange
 * Flash-Friendly File System (F2FS)