From 826afbac0cd2fa54f21fd7d2e2e883d0155b68b3 Mon Sep 17 00:00:00 2001
From: Natalia Portillo <claunia@claunia.com>
Date: Thu, 21 Jul 2016 17:16:08 +0100
Subject: [PATCH] 	Added preliminar early-API for filesystem read-only
 access.

---
 DiscImageChef.Filesystems/APFS.cs         | 56 ++++++++++++++++
 DiscImageChef.Filesystems/Acorn.cs        | 56 ++++++++++++++++
 DiscImageChef.Filesystems/AmigaDOS.cs     | 55 ++++++++++++++++
 DiscImageChef.Filesystems/AppleHFS.cs     | 56 ++++++++++++++++
 DiscImageChef.Filesystems/AppleHFSPlus.cs | 56 ++++++++++++++++
 DiscImageChef.Filesystems/AppleMFS.cs     | 56 ++++++++++++++++
 DiscImageChef.Filesystems/BFS.cs          | 56 ++++++++++++++++
 DiscImageChef.Filesystems/BTRFS.cs        | 56 ++++++++++++++++
 DiscImageChef.Filesystems/FAT.cs          | 56 ++++++++++++++++
 DiscImageChef.Filesystems/FFS.cs          | 56 ++++++++++++++++
 DiscImageChef.Filesystems/Filesystem.cs   | 80 +++++++++++++++++++++++
 DiscImageChef.Filesystems/HPFS.cs         | 56 ++++++++++++++++
 DiscImageChef.Filesystems/ISO9660.cs      | 56 ++++++++++++++++
 DiscImageChef.Filesystems/LisaFS.cs       | 56 ++++++++++++++++
 DiscImageChef.Filesystems/MinixFS.cs      | 56 ++++++++++++++++
 DiscImageChef.Filesystems/NTFS.cs         | 56 ++++++++++++++++
 DiscImageChef.Filesystems/Nintendo.cs     | 56 ++++++++++++++++
 DiscImageChef.Filesystems/ODS.cs          | 56 ++++++++++++++++
 DiscImageChef.Filesystems/Opera.cs        | 57 +++++++++++++++-
 DiscImageChef.Filesystems/PCEngine.cs     | 56 ++++++++++++++++
 DiscImageChef.Filesystems/ProDOS.cs       | 56 ++++++++++++++++
 DiscImageChef.Filesystems/SolarFS.cs      | 56 ++++++++++++++++
 DiscImageChef.Filesystems/Structs.cs      | 65 +++++++++++++++++-
 DiscImageChef.Filesystems/SysV.cs         | 56 ++++++++++++++++
 DiscImageChef.Filesystems/UNIXBFS.cs      | 56 ++++++++++++++++
 DiscImageChef.Filesystems/ext2FS.cs       | 56 ++++++++++++++++
 DiscImageChef.Filesystems/extFS.cs        | 56 ++++++++++++++++
 27 files changed, 1542 insertions(+), 3 deletions(-)

diff --git a/DiscImageChef.Filesystems/APFS.cs b/DiscImageChef.Filesystems/APFS.cs
index 859a416e..17070d1d 100644
--- a/DiscImageChef.Filesystems/APFS.cs
+++ b/DiscImageChef.Filesystems/APFS.cs
@@ -39,6 +39,7 @@ using System;
 using System.Runtime.InteropServices;
 using System.Text;
 using DiscImageChef.Console;
+using System.Collections.Generic;
 
 namespace DiscImageChef.Filesystems
 {
@@ -129,6 +130,61 @@ namespace DiscImageChef.Filesystems
             xmlFSType.ClusterSize = (int)nxSb.blockSize;
             xmlFSType.Type = "Apple File System";
         }
+
+        public override Errno Mount()
+        {
+            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;
+        }
     }
 }
 
diff --git a/DiscImageChef.Filesystems/Acorn.cs b/DiscImageChef.Filesystems/Acorn.cs
index 02406cc3..ce9306ca 100644
--- a/DiscImageChef.Filesystems/Acorn.cs
+++ b/DiscImageChef.Filesystems/Acorn.cs
@@ -36,6 +36,7 @@
 // ****************************************************************************/
 // //$Id$
 using System;
+using System.Collections.Generic;
 using System.Runtime.InteropServices;
 using System.Text;
 using DiscImageChef.Console;
@@ -222,6 +223,61 @@ namespace DiscImageChef.Filesystems
             xmlFSType.VolumeName = discname;
             xmlFSType.VolumeSerial = string.Format("{0}", drSb.disc_id);
         }
+
+        public override Errno Mount()
+        {
+            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;
+        }
     }
 }
 
diff --git a/DiscImageChef.Filesystems/AmigaDOS.cs b/DiscImageChef.Filesystems/AmigaDOS.cs
index ca6a229f..b451ba20 100644
--- a/DiscImageChef.Filesystems/AmigaDOS.cs
+++ b/DiscImageChef.Filesystems/AmigaDOS.cs
@@ -373,5 +373,60 @@ namespace DiscImageChef.Filesystems
 
             return sum;
         }
+
+        public override Errno Mount()
+        {
+            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;
+        }
     }
 }
\ No newline at end of file
diff --git a/DiscImageChef.Filesystems/AppleHFS.cs b/DiscImageChef.Filesystems/AppleHFS.cs
index 65bb90bd..7838de95 100644
--- a/DiscImageChef.Filesystems/AppleHFS.cs
+++ b/DiscImageChef.Filesystems/AppleHFS.cs
@@ -37,6 +37,7 @@ Copyright (C) 2011-2014 Claunia.com
 //$Id$
 
 using System;
+using System.Collections.Generic;
 using System.Text;
 using DiscImageChef;
 
@@ -540,5 +541,60 @@ namespace DiscImageChef.Filesystems
             /// <summary>0x086, Heap size on a Mac with 512KiB of RAM or more</summary>
             public UInt32 heap_512k;
         }
+
+        public override Errno Mount()
+        {
+            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;
+        }
     }
 }
diff --git a/DiscImageChef.Filesystems/AppleHFSPlus.cs b/DiscImageChef.Filesystems/AppleHFSPlus.cs
index be69df69..ce7cf7bc 100644
--- a/DiscImageChef.Filesystems/AppleHFSPlus.cs
+++ b/DiscImageChef.Filesystems/AppleHFSPlus.cs
@@ -39,6 +39,7 @@ Copyright (C) 2011-2014 Claunia.com
 using System;
 using System.Text;
 using DiscImageChef;
+using System.Collections.Generic;
 
 // Information from Apple TechNote 1150: https://developer.apple.com/legacy/library/technotes/tn/tn1150.html
 namespace DiscImageChef.Filesystems
@@ -570,5 +571,60 @@ namespace DiscImageChef.Filesystems
             /// <summary>0x210</summary>
             public UInt32 startupFile_extents_blockCount7;
         }
+
+        public override Errno Mount()
+        {
+            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;
+        }
     }
 }
diff --git a/DiscImageChef.Filesystems/AppleMFS.cs b/DiscImageChef.Filesystems/AppleMFS.cs
index cb6ff38c..86d1a830 100644
--- a/DiscImageChef.Filesystems/AppleMFS.cs
+++ b/DiscImageChef.Filesystems/AppleMFS.cs
@@ -39,6 +39,7 @@ Copyright (C) 2011-2014 Claunia.com
 using System;
 using System.Text;
 using DiscImageChef;
+using System.Collections.Generic;
 
 // Information from Inside Macintosh
 namespace DiscImageChef.Filesystems
@@ -297,5 +298,60 @@ namespace DiscImageChef.Filesystems
             /// <summary>0x086, Heap size on a Mac with 512KiB of RAM or more</summary>
             public UInt32 heap_512k;
         }
+
+        public override Errno Mount()
+        {
+            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;
+        }
     }
 }
diff --git a/DiscImageChef.Filesystems/BFS.cs b/DiscImageChef.Filesystems/BFS.cs
index 77f4ac37..39627fc8 100644
--- a/DiscImageChef.Filesystems/BFS.cs
+++ b/DiscImageChef.Filesystems/BFS.cs
@@ -39,6 +39,7 @@ Copyright (C) 2011-2014 Claunia.com
 using System;
 using System.Text;
 using DiscImageChef;
+using System.Collections.Generic;
 
 // Information from Practical Filesystem Design, ISBN 1-55860-497-9
 namespace DiscImageChef.Filesystems
@@ -286,5 +287,60 @@ namespace DiscImageChef.Filesystems
             /// <summary>0x082, As this is part of inode_addr, this is 1</summary>
             public UInt16 indices_len;
         }
+
+        public override Errno Mount()
+        {
+            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;
+        }
     }
 }
\ No newline at end of file
diff --git a/DiscImageChef.Filesystems/BTRFS.cs b/DiscImageChef.Filesystems/BTRFS.cs
index de764df3..ab5b760a 100644
--- a/DiscImageChef.Filesystems/BTRFS.cs
+++ b/DiscImageChef.Filesystems/BTRFS.cs
@@ -39,6 +39,7 @@ using System;
 using System.Runtime.InteropServices;
 using System.Text;
 using DiscImageChef.Console;
+using System.Collections.Generic;
 
 namespace DiscImageChef.Filesystems
 {
@@ -240,6 +241,61 @@ namespace DiscImageChef.Filesystems
             xmlFSType.VolumeSetIdentifier = string.Format("{0}", btrfsSb.dev_item.device_uuid);
             xmlFSType.Type = Name;
         }
+
+        public override Errno Mount()
+        {
+            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;
+        }
     }
 }
 
diff --git a/DiscImageChef.Filesystems/FAT.cs b/DiscImageChef.Filesystems/FAT.cs
index ee955328..24394c39 100644
--- a/DiscImageChef.Filesystems/FAT.cs
+++ b/DiscImageChef.Filesystems/FAT.cs
@@ -39,6 +39,7 @@ Copyright (C) 2011-2014 Claunia.com
 using System;
 using System.Text;
 using DiscImageChef;
+using System.Collections.Generic;
 
 // TODO: Implement detecting DOS bootable disks
 // TODO: Implement detecting Atari TOS bootable disks and printing corresponding fields
@@ -483,5 +484,60 @@ namespace DiscImageChef.Filesystems
             /// <summary>0x52, Filesystem type, 8 bytes, space-padded, must be "FAT32   "</summary>
             public string fs_type;
         }
+
+        public override Errno Mount()
+        {
+            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;
+        }
     }
 }
\ No newline at end of file
diff --git a/DiscImageChef.Filesystems/FFS.cs b/DiscImageChef.Filesystems/FFS.cs
index 418a9568..d97f7957 100644
--- a/DiscImageChef.Filesystems/FFS.cs
+++ b/DiscImageChef.Filesystems/FFS.cs
@@ -39,6 +39,7 @@ Copyright (C) 2011-2014 Claunia.com
 using System;
 using System.Text;
 using DiscImageChef;
+using System.Collections.Generic;
 
 // Using information from Linux kernel headers
 using DiscImageChef.Console;
@@ -1139,5 +1140,60 @@ namespace DiscImageChef.Filesystems
             public byte fs_space;
             // 0x0561
         }
+
+        public override Errno Mount()
+        {
+            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;
+        }
     }
 }
\ No newline at end of file
diff --git a/DiscImageChef.Filesystems/Filesystem.cs b/DiscImageChef.Filesystems/Filesystem.cs
index 9f8ca514..e26a8176 100644
--- a/DiscImageChef.Filesystems/Filesystem.cs
+++ b/DiscImageChef.Filesystems/Filesystem.cs
@@ -95,6 +95,86 @@ namespace DiscImageChef.Filesystems
         /// <param name="partitionEnd">Partition end sector (LBA).</param>
         /// <param name="information">Filesystem information.</param>
         public abstract void GetInformation(ImagePlugins.ImagePlugin imagePlugin, ulong partitionStart, ulong partitionEnd, out string information);
+
+        /// <summary>
+        /// Initializates whatever internal structures the filesystem plugin needs to be able to read files and directories from the filesystem.
+        /// </summary>
+        public abstract Errno Mount();
+
+        /// <summary>
+        /// Frees all internal structures created by <see cref="Mount"/> 
+        /// </summary>
+        public abstract Errno Unmount();
+
+        /// <summary>
+        /// Maps a filesystem block from a file to a block from the underlying device.
+        /// </summary>
+        /// <returns>Error number.</returns>
+        /// <param name="path">File path.</param>
+        /// <param name="fileBlock">File block.</param>
+        /// <param name="deviceBlock">Device block.</param>
+        public abstract Errno MapBlock(string path, long fileBlock, ref long deviceBlock);
+
+        /// <summary>
+        /// Gets the attributes of a file or directory
+        /// </summary>
+        /// <returns>Error number.</returns>
+        /// <param name="path">File path.</param>
+        /// <param name="attributes">File attributes.</param>
+        public abstract Errno GetAttributes(string path, ref FileAttributes attributes);
+
+        /// <summary>
+        /// Lists all extended attributes, alternate data streams and forks of the given file.
+        /// </summary>
+        /// <returns>Error number.</returns>
+        /// <param name="path">Path.</param>
+        /// <param name="xattrs">List of extended attributes, alternate data streams and forks.</param>
+        public abstract Errno ListXAttr(string path, ref List<string> xattrs);
+
+        /// <summary>
+        /// Reads an extended attribute, alternate data stream or fork from the given file.
+        /// </summary>
+        /// <returns>The extended attribute, alternate data stream or fork name.</returns>
+        /// <param name="path">File path.</param>
+        /// <param name="xattr">Extendad attribute, alternate data stream or fork name.</param>
+        /// <param name="buf">Buffer.</param>
+        public abstract Errno GetXattr(string path, string xattr, ref byte[] buf);
+
+        /// <summary>
+        /// Reads data from a file (main/only data stream or data fork).
+        /// </summary>
+        /// <param name="path">File path.</param>
+        /// <param name="offset">Offset.</param>
+        /// <param name="size">Bytes to read.</param>
+        /// <param name="buf">Buffer.</param>
+        public abstract Errno Read(string path, long offset, long size, ref byte[] buf);
+
+        /// <summary>
+        /// Lists contents from a directory.
+        /// </summary>
+        /// <param name="path">Directory path.</param>
+        /// <param name="contents">Directory contents.</param>
+        public abstract Errno ReadDir(string path, ref List<string> contents);
+
+        /// <summary>
+        /// Gets information about the mounted volume.
+        /// </summary>
+        /// <param name="stat">Information about the mounted volume.</param>
+        public abstract Errno StatFs(ref FileSystemInfo stat);
+
+        /// <summary>
+        /// Gets information about a file or directory.
+        /// </summary>
+        /// <param name="path">File path.</param>
+        /// <param name="stat">File information.</param>
+        public abstract Errno Stat(string path, ref FileEntryInfo stat);
+
+        /// <summary>
+        /// Solves a symbolic link.
+        /// </summary>
+        /// <param name="path">Link path.</param>
+        /// <param name="dest">Link destination.</param>
+        public abstract Errno ReadLink(string path, ref string dest);
     }
 }
 
diff --git a/DiscImageChef.Filesystems/HPFS.cs b/DiscImageChef.Filesystems/HPFS.cs
index 3650c15c..fd9fa3da 100644
--- a/DiscImageChef.Filesystems/HPFS.cs
+++ b/DiscImageChef.Filesystems/HPFS.cs
@@ -40,6 +40,7 @@ Copyright (C) 2011-2014 Claunia.com
 using System;
 using System.Text;
 using DiscImageChef;
+using System.Collections.Generic;
 
 // Information from an old unnamed document
 namespace DiscImageChef.Filesystems
@@ -395,5 +396,60 @@ namespace DiscImageChef.Filesystems
             /// <summary>0x02C, SpareBlock CRC32 (only HPFS386)</summary>
             public UInt32 sp_crc32;
         }
+
+        public override Errno Mount()
+        {
+            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;
+        }
     }
 }
diff --git a/DiscImageChef.Filesystems/ISO9660.cs b/DiscImageChef.Filesystems/ISO9660.cs
index 2920a988..2c1408ca 100644
--- a/DiscImageChef.Filesystems/ISO9660.cs
+++ b/DiscImageChef.Filesystems/ISO9660.cs
@@ -40,6 +40,7 @@ using System;
 using System.Globalization;
 using System.Text;
 using DiscImageChef;
+using System.Collections.Generic;
 
 // This is coded following ECMA-119.
 // TODO: Differentiate ISO Level 1, 2, 3 and ISO 9660:1999
@@ -1082,5 +1083,60 @@ namespace DiscImageChef.Filesystems
 
             return decodedVD;
         }
+
+        public override Errno Mount()
+        {
+            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;
+        }
     }
 }
\ No newline at end of file
diff --git a/DiscImageChef.Filesystems/LisaFS.cs b/DiscImageChef.Filesystems/LisaFS.cs
index 6772cf2f..b8b6e1ed 100644
--- a/DiscImageChef.Filesystems/LisaFS.cs
+++ b/DiscImageChef.Filesystems/LisaFS.cs
@@ -40,6 +40,7 @@ using System;
 using System.Text;
 using DiscImageChef;
 using DiscImageChef.ImagePlugins;
+using System.Collections.Generic;
 
 // All information by Natalia Portillo
 // Variable names from Lisa API
@@ -421,6 +422,61 @@ namespace DiscImageChef.Filesystems
             }
         }
 
+        public override Errno Mount()
+        {
+            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;
+        }
+
         struct Lisa_MDDF
         {
             /// <summary>0x00, Filesystem version</summary>
diff --git a/DiscImageChef.Filesystems/MinixFS.cs b/DiscImageChef.Filesystems/MinixFS.cs
index de9bcc1a..1be616d9 100644
--- a/DiscImageChef.Filesystems/MinixFS.cs
+++ b/DiscImageChef.Filesystems/MinixFS.cs
@@ -39,6 +39,7 @@ Copyright (C) 2011-2014 Claunia.com
 using System;
 using System.Text;
 using DiscImageChef;
+using System.Collections.Generic;
 
 // Information from the Linux kernel
 namespace DiscImageChef.Filesystems
@@ -304,6 +305,61 @@ namespace DiscImageChef.Filesystems
             /// <summary>0x1E, on-disk structures version</summary>
             public byte s_disk_version;
         }
+
+        public override Errno Mount()
+        {
+            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;
+        }
     }
 }
 
diff --git a/DiscImageChef.Filesystems/NTFS.cs b/DiscImageChef.Filesystems/NTFS.cs
index 43bb66e2..6c39adb9 100644
--- a/DiscImageChef.Filesystems/NTFS.cs
+++ b/DiscImageChef.Filesystems/NTFS.cs
@@ -39,6 +39,7 @@ Copyright (C) 2011-2014 Claunia.com
 using System;
 using System.Text;
 using DiscImageChef;
+using System.Collections.Generic;
 
 // Information from Inside Windows NT
 namespace DiscImageChef.Filesystems
@@ -242,5 +243,60 @@ namespace DiscImageChef.Filesystems
             /// <summary>0x1FE, 0xAA55</summary>
             public UInt16 signature2;
         }
+
+        public override Errno Mount()
+        {
+            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;
+        }
     }
 }
diff --git a/DiscImageChef.Filesystems/Nintendo.cs b/DiscImageChef.Filesystems/Nintendo.cs
index 222a8298..f3307003 100644
--- a/DiscImageChef.Filesystems/Nintendo.cs
+++ b/DiscImageChef.Filesystems/Nintendo.cs
@@ -43,6 +43,7 @@ using DiscImageChef.PartPlugins;
 using System.Collections.Generic;
 using DiscImageChef.Console;
 using System.Runtime.Remoting.Messaging;
+using System.Collections.Generic;
 
 namespace DiscImageChef.Filesystems
 {
@@ -490,6 +491,61 @@ namespace DiscImageChef.Filesystems
 
             return string.Format("unknown type {0}", type);
         }
+
+        public override Errno Mount()
+        {
+            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;
+        }
     }
 }
 
diff --git a/DiscImageChef.Filesystems/ODS.cs b/DiscImageChef.Filesystems/ODS.cs
index f2715a12..80e07392 100644
--- a/DiscImageChef.Filesystems/ODS.cs
+++ b/DiscImageChef.Filesystems/ODS.cs
@@ -38,6 +38,7 @@ Copyright (C) 2011-2014 Claunia.com
 using System;
 using System.Text;
 using DiscImageChef;
+using System.Collections.Generic;
 
 // Information from VMS File System Internals by Kirby McCoy
 // ISBN: 1-55558-056-4
@@ -372,5 +373,60 @@ namespace DiscImageChef.Filesystems
             /// <summary>0x1FE, Checksum of preceding 255 words (16 bit units)</summary>
             public UInt16 checksum2;
         }
+
+        public override Errno Mount()
+        {
+            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;
+        }
     }
 }
\ No newline at end of file
diff --git a/DiscImageChef.Filesystems/Opera.cs b/DiscImageChef.Filesystems/Opera.cs
index 4c114550..6a3f7064 100644
--- a/DiscImageChef.Filesystems/Opera.cs
+++ b/DiscImageChef.Filesystems/Opera.cs
@@ -39,7 +39,7 @@ Copyright (C) 2011-2014 Claunia.com
 using System;
 using System.Text;
 using DiscImageChef;
-
+using System.Collections.Generic;
 
 namespace DiscImageChef.Filesystems
 {
@@ -168,5 +168,60 @@ namespace DiscImageChef.Filesystems
             /// <summary>0x060, Last root directory copy</summary>
             public Int32 last_root_copy;
         }
+
+        public override Errno Mount()
+        {
+            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;
+        }
     }
 }
\ No newline at end of file
diff --git a/DiscImageChef.Filesystems/PCEngine.cs b/DiscImageChef.Filesystems/PCEngine.cs
index c02104c3..3cf5fe3e 100644
--- a/DiscImageChef.Filesystems/PCEngine.cs
+++ b/DiscImageChef.Filesystems/PCEngine.cs
@@ -39,6 +39,7 @@ Copyright (C) 2011-2014 Claunia.com
 using System;
 using System.Text;
 using DiscImageChef;
+using System.Collections.Generic;
 
 namespace DiscImageChef.Filesystems
 {
@@ -71,5 +72,60 @@ namespace DiscImageChef.Filesystems
             xmlFSType.Clusters = (long)((partitionEnd - partitionStart + 1) / imagePlugin.GetSectorSize() * 2048);
             xmlFSType.ClusterSize = 2048;
         }
+
+        public override Errno Mount()
+        {
+            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;
+        }
     }
 }
\ No newline at end of file
diff --git a/DiscImageChef.Filesystems/ProDOS.cs b/DiscImageChef.Filesystems/ProDOS.cs
index 35c9f518..a57a4d05 100644
--- a/DiscImageChef.Filesystems/ProDOS.cs
+++ b/DiscImageChef.Filesystems/ProDOS.cs
@@ -39,6 +39,7 @@ Copyright (C) 2011-2015 Claunia.com
 using System;
 using System.Text;
 using DiscImageChef;
+using System.Collections.Generic;
 
 // Information from Apple ProDOS 8 Technical Reference
 using DiscImageChef.Console;
@@ -233,6 +234,61 @@ namespace DiscImageChef.Filesystems
             return;
         }
 
+        public override Errno Mount()
+        {
+            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;
+        }
+
         /// <summary>
         /// ProDOS directory entry, decoded structure
         /// </summary>
diff --git a/DiscImageChef.Filesystems/SolarFS.cs b/DiscImageChef.Filesystems/SolarFS.cs
index 4bd44ceb..0e62f8e7 100644
--- a/DiscImageChef.Filesystems/SolarFS.cs
+++ b/DiscImageChef.Filesystems/SolarFS.cs
@@ -39,6 +39,7 @@ Copyright (C) 2011-2014 Claunia.com
 using System;
 using System.Text;
 using DiscImageChef;
+using System.Collections.Generic;
 
 // Based on FAT's BPB, cannot find a FAT or directory
 using DiscImageChef.Console;
@@ -193,5 +194,60 @@ namespace DiscImageChef.Filesystems
             /// <summary>0x35, 8 bytes, "SOL_FS  "</summary>
             public string fs_type;
         }
+
+        public override Errno Mount()
+        {
+            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;
+        }
     }
 }
\ No newline at end of file
diff --git a/DiscImageChef.Filesystems/Structs.cs b/DiscImageChef.Filesystems/Structs.cs
index 5baa12b1..ca895a5a 100644
--- a/DiscImageChef.Filesystems/Structs.cs
+++ b/DiscImageChef.Filesystems/Structs.cs
@@ -145,7 +145,7 @@ namespace DiscImageChef.Filesystems
     /// <summary>
     /// Information about a file entry
     /// </summary>
-    public struct FileEntryInfo
+    public class FileEntryInfo
     {
         DateTime crtimeUtc;
         DateTime atimeUtc;
@@ -200,7 +200,7 @@ namespace DiscImageChef.Filesystems
         public long Blocks;
     }
 
-    public struct FileSystemInfo
+    public class FileSystemInfo
     {
         /// <summary>Filesystem type</summary>
         public string Type;
@@ -219,4 +219,65 @@ namespace DiscImageChef.Filesystems
         /// <summary>Filesystem ID</summary>
         public Guid Id;
     }
+
+    /// <summary>
+    /// Errors
+    /// </summary>
+    public enum Errno
+    {
+        /// <summary>No error happened</summary>
+        NoError = 0,
+        /// <summary>Access denied</summary>
+        AccessDenied = -13,
+        /// <summary>Busy, cannot complete</summary>
+        Busy = -16,
+        /// <summary>File is too large</summary>
+        FileTooLarge = -27,
+        /// <summary>Invalid argument</summary>
+        InvalidArgument = -22,
+        /// <summary>I/O error</summary>
+        InOutError = -5,
+        /// <summary>Is a directory (e.g.: trying to Read() a dir)</summary>
+        IsDirectory = -21,
+        /// <summary>Name is too long</summary>
+        NameTooLong = -36,
+        /// <summary>No such device</summary>
+        NoSuchDevice = -19,
+        /// <summary>No such file or directory</summary>
+        NoSuchFile = -2,
+        /// <summary>Is not a directory (e.g.: trying to ReadDir() a file)</summary>
+        NotDirectory = -20,
+        /// <summary>Not implemented</summary>
+        NotImplemented = -38,
+        /// <summary>Not supported</summary>
+        NotSupported = -252,
+        /// <summary>Link is severed</summary>
+        SeveredLink = -67,
+        /// <summary>Access denied</summary>
+        EACCES = AccessDenied,
+        /// <summary>Busy, cannot complete</summary>
+        EBUSY = Busy,
+        /// <summary>File is too large</summary>
+        EFBIG = FileTooLarge,
+        /// <summary>Invalid argument</summary>
+        EINVAL = InvalidArgument,
+        /// <summary>I/O error</summary>
+        EIO = InOutError,
+        /// <summary>Is a directory (e.g.: trying to Read() a dir)</summary>
+        EISDIR = IsDirectory,
+        /// <summary>Name is too long</summary>
+        ENAMETOOLONG = NameTooLong,
+        /// <summary>No such device</summary>
+        ENODEV = NoSuchDevice,
+        /// <summary>No such file or directory</summary>
+        ENOENT = NoSuchFile,
+        /// <summary>Link is severed</summary>
+        ENOLINK = SeveredLink,
+        /// <summary>Not implemented</summary>
+        ENOSYS = NotImplemented,
+        /// <summary>Is not a directory (e.g.: trying to ReadDir() a file)</summary>
+        ENOTDIR = NotDirectory,
+        /// <summary>Not supported</summary>
+        ENOTSUP = NotSupported
+    }
 }
\ No newline at end of file
diff --git a/DiscImageChef.Filesystems/SysV.cs b/DiscImageChef.Filesystems/SysV.cs
index 62f7a4ac..1bcb4f66 100644
--- a/DiscImageChef.Filesystems/SysV.cs
+++ b/DiscImageChef.Filesystems/SysV.cs
@@ -39,6 +39,7 @@ Copyright (C) 2011-2014 Claunia.com
 using System;
 using System.Text;
 using DiscImageChef;
+using System.Collections.Generic;
 
 // Information from the Linux kernel
 namespace DiscImageChef.Filesystems
@@ -858,5 +859,60 @@ namespace DiscImageChef.Filesystems
             /// <summary>0x1F4, zero-filled</summary>
             public UInt32 s_unique;
         }
+
+        public override Errno Mount()
+        {
+            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;
+        }
     }
 }
\ No newline at end of file
diff --git a/DiscImageChef.Filesystems/UNIXBFS.cs b/DiscImageChef.Filesystems/UNIXBFS.cs
index 98063992..be2daa93 100644
--- a/DiscImageChef.Filesystems/UNIXBFS.cs
+++ b/DiscImageChef.Filesystems/UNIXBFS.cs
@@ -37,6 +37,7 @@ Copyright (C) 2011-2014 Claunia.com
 //$Id$
 
 using System;
+using System.Collections.Generic;
 using System.Text;
 using DiscImageChef;
 
@@ -135,5 +136,60 @@ namespace DiscImageChef.Filesystems
             /// <summary>0x22, 6 bytes, volume name</summary>
             public string s_volume;
         }
+
+        public override Errno Mount()
+        {
+            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;
+        }
     }
 }
\ No newline at end of file
diff --git a/DiscImageChef.Filesystems/ext2FS.cs b/DiscImageChef.Filesystems/ext2FS.cs
index 7cb66e42..177e993d 100644
--- a/DiscImageChef.Filesystems/ext2FS.cs
+++ b/DiscImageChef.Filesystems/ext2FS.cs
@@ -39,6 +39,7 @@ Copyright (C) 2011-2014 Claunia.com
 using System;
 using System.Text;
 using DiscImageChef;
+using System.Collections.Generic;
 
 // Information from the Linux kernel
 namespace DiscImageChef.Filesystems
@@ -927,5 +928,60 @@ namespace DiscImageChef.Filesystems
         public const UInt32 EXT2_FLAGS_UNSIGNED_HASH = 0x00000002;
         /// <summary>Testing development code</summary>
         public const UInt32 EXT2_FLAGS_TEST_FILESYS = 0x00000004;
+
+        public override Errno Mount()
+        {
+            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;
+        }
     }
 }
\ No newline at end of file
diff --git a/DiscImageChef.Filesystems/extFS.cs b/DiscImageChef.Filesystems/extFS.cs
index e426d9a7..123f6a55 100644
--- a/DiscImageChef.Filesystems/extFS.cs
+++ b/DiscImageChef.Filesystems/extFS.cs
@@ -39,6 +39,7 @@ Copyright (C) 2011-2014 Claunia.com
 using System;
 using System.Text;
 using DiscImageChef;
+using System.Collections.Generic;
 
 // Information from the Linux kernel
 namespace DiscImageChef.Filesystems
@@ -143,5 +144,60 @@ namespace DiscImageChef.Filesystems
             /// <summary>0x038, 0x137D (little endian)</summary>
             public UInt16 magic;
         }
+
+        public override Errno Mount()
+        {
+            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;
+        }
     }
 }
\ No newline at end of file