Adds support for Xbox filesystems, closes #16.

DiscImageChef.Filesystems/DiscImageChef.Filesystems.csproj

@@ -114,6 +114,7 @@
     <Compile Include="CBM.cs" />
     <Compile Include="UDF.cs" />
     <Compile Include="ECMA67.cs" />
+    <Compile Include="FATX.cs" />
   </ItemGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
   <ItemGroup>

DiscImageChef.Filesystems/FATX.cs

@@ -9,7 +9,7 @@
 //
 // --[ Description ] ----------------------------------------------------------
 //
-//     Description
+//     Identifies the FATX filesystem and shows information.
 //
 // --[ License ] --------------------------------------------------------------
 //
@@ -29,14 +29,140 @@
 // ----------------------------------------------------------------------------
 // Copyright © 2011-2016 Natalia Portillo
 // ****************************************************************************/
+
 using System;
+using System.Collections.Generic;
+using System.Runtime.InteropServices;
+using System.Text;
+
 namespace DiscImageChef.Filesystems
 {
-    public class FATX
+    class FATX : Filesystem
     {
+        [StructLayout(LayoutKind.Sequential, Pack = 1)]
+        struct FATX_Superblock
+        {
+            public uint magic;
+            public uint id;
+            public uint sectorsPerCluster;
+            public uint rootDirectoryCluster;
+        }
+
+        const uint FATX_Magic = 0x58544146;
+
         public FATX()
         {
+            Name = "FATX Filesystem Plugin";
+            PluginUUID = new Guid("ED27A721-4A17-4649-89FD-33633B46E228");
+        }
+
+        public FATX(ImagePlugins.ImagePlugin imagePlugin, ulong partitionStart, ulong partitionEnd)
+        {
+            Name = "FATX Filesystem Plugin";
+            PluginUUID = new Guid("ED27A721-4A17-4649-89FD-33633B46E228");
+        }
+
+        public override bool Identify(ImagePlugins.ImagePlugin imagePlugin, ulong partitionStart, ulong partitionEnd)
+        {
+            if(imagePlugin.GetSectorSize() < 512)
+                return false;
+
+            FATX_Superblock fatxSb = new FATX_Superblock();
+            byte[] sector = imagePlugin.ReadSector(partitionStart);
+
+            fatxSb = BigEndianMarshal.ByteArrayToStructureBigEndian<FATX_Superblock>(sector);
+
+            return fatxSb.magic == FATX_Magic;
+        }
+
+        public override void GetInformation(ImagePlugins.ImagePlugin imagePlugin, ulong partitionStart, ulong partitionEnd, out string information)
+        {
+            information = "";
+            if(imagePlugin.GetSectorSize() < 512)
+                return;
+
+            FATX_Superblock fatxSb = new FATX_Superblock();
+
+            byte[] sector = imagePlugin.ReadSector(partitionStart);
+
+            fatxSb = BigEndianMarshal.ByteArrayToStructureBigEndian<FATX_Superblock>(sector);
+
+            if(fatxSb.magic != FATX_Magic)
+                return;
+
+            StringBuilder sb = new StringBuilder();
+
+            sb.AppendLine("FATX filesystem");
+            sb.AppendFormat("Filesystem id {0}", fatxSb.id).AppendLine();
+            sb.AppendFormat("{0} sectors ({1} bytes) per cluster", fatxSb.sectorsPerCluster, fatxSb.sectorsPerCluster * imagePlugin.ImageInfo.sectorSize).AppendLine();
+            sb.AppendFormat("Root directory starts on cluster {0}", fatxSb.rootDirectoryCluster).AppendLine();
+
+            information = sb.ToString();
+
+            xmlFSType = new Schemas.FileSystemType();
+            xmlFSType.Type = "FATX filesystem";
+            xmlFSType.ClusterSize = (int)(fatxSb.sectorsPerCluster * imagePlugin.ImageInfo.sectorSize);
+            xmlFSType.Clusters = (long)((partitionEnd - partitionStart + 1) * imagePlugin.ImageInfo.sectorSize / (ulong)xmlFSType.ClusterSize);
+        }
+
+        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;
         }
     }
-}
-
+}