diff --git a/DiscImageChef.Filesystems/DiscImageChef.Filesystems.csproj b/DiscImageChef.Filesystems/DiscImageChef.Filesystems.csproj
index ceece292..a2106e79 100644
--- a/DiscImageChef.Filesystems/DiscImageChef.Filesystems.csproj
+++ b/DiscImageChef.Filesystems/DiscImageChef.Filesystems.csproj
@@ -129,6 +129,7 @@
+
diff --git a/DiscImageChef.Filesystems/UNICOS.cs b/DiscImageChef.Filesystems/UNICOS.cs
new file mode 100644
index 00000000..31fea99c
--- /dev/null
+++ b/DiscImageChef.Filesystems/UNICOS.cs
@@ -0,0 +1,289 @@
+// /***************************************************************************
+// The Disc Image Chef
+// ----------------------------------------------------------------------------
+//
+// Filename : UNICOS.cs
+// Author(s) : Natalia Portillo
+//
+// Component : Component
+//
+// --[ Description ] ----------------------------------------------------------
+//
+// Identifies the UNICOS 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 .
+//
+// ----------------------------------------------------------------------------
+// Copyright © 2011-2017 Natalia Portillo
+// ****************************************************************************/
+
+using System;
+using System.Collections.Generic;
+using System.Runtime.InteropServices;
+using System.Text;
+using DiscImageChef.CommonTypes;
+using DiscImageChef.Console;
+// UNICOS is ILP64 so let's think everything is 64-bit
+using dev_t = System.Int64;
+using daddr_t = System.Int64;
+using time_t = System.Int64;
+using blkno_t = System.Int64;
+using ino_t = System.Int64;
+using extent_t = System.Int64;
+
+namespace DiscImageChef.Filesystems
+{
+ public class UNICOS : Filesystem
+ {
+ const int NC1MAXPART = 64;
+ const int NC1MAXIREG = 4;
+
+ [StructLayout(LayoutKind.Sequential, Pack = 1)]
+ struct nc1ireg_sb
+ {
+ public ushort i_unused; /* reserved */
+ public ushort i_nblk; /* number of blocks */
+ public uint i_sblk; /* start block number */
+ }
+
+ [StructLayout(LayoutKind.Sequential, Pack = 1)]
+ struct nc1fdev_sb
+ {
+ public long fd_name; /* Physical device name */
+ public uint fd_sblk; /* Start block number */
+ public uint fd_nblk; /* Number of blocks */
+ [MarshalAs(UnmanagedType.ByValArray, SizeConst = NC1MAXIREG)]
+ public nc1ireg_sb[] fd_ireg; /* Inode regions */
+ }
+
+ [StructLayout(LayoutKind.Sequential, Pack = 1)]
+ struct UNICOS_Superblock
+ {
+ public ulong s_magic; /* magic number to indicate file system type */
+ [MarshalAs(UnmanagedType.ByValArray, SizeConst = 8)]
+ public byte[] s_fname; /* file system name */
+ [MarshalAs(UnmanagedType.ByValArray, SizeConst = 8)]
+ public byte[] s_fpack; /* file system pack name */
+ public dev_t s_dev; /* major/minor device, for verification */
+
+ public daddr_t s_fsize; /* size in blocks of entire volume */
+ public long s_isize; /* Number of total inodes */
+ public long s_bigfile; /* number of bytes at which a file is big */
+ public long s_bigunit; /* minimum number of blocks allocated for big files */
+ public ulong s_secure; /* security: secure FS label */
+ public long s_maxlvl; /* security: maximum security level */
+ public long s_minlvl; /* security: minimum security level */
+ public long s_valcmp; /* security: valid security compartments */
+ public time_t s_time; /* last super block update */
+ public blkno_t s_dboff; /* Dynamic block number */
+ public ino_t s_root; /* root inode */
+ public long s_error; /* Type of file system error detected */
+ public blkno_t s_mapoff; /* Start map block number */
+ public long s_mapblks; /* Last map block number */
+ public long s_nscpys; /* Number of copies of s.b per partition */
+ public long s_npart; /* Number of partitions */
+ public long s_ifract; /* Ratio of inodes to blocks */
+ public extent_t s_sfs; /* SFS only blocks */
+ public long s_flag; /* Flag word */
+ [MarshalAs(UnmanagedType.ByValArray, SizeConst = NC1MAXPART)]
+ public nc1fdev_sb s_part; /* Partition descriptors */
+ public long s_iounit; /* Physical block size */
+ public long s_numiresblks; /* number of inode reservation blocks */
+ /* per region (currently 1) */
+ /* 0 = 1*(AU) words, n = (n+1)*(AU) words */
+ public long s_priparts; /* bitmap of primary partitions */
+ public long s_priblock; /* block size of primary partition(s) */
+ /* 0 = 1*512 words, n = (n+1)*512 words */
+ public long s_prinblks; /* number of 512 wds blocks in primary */
+ public long s_secparts; /* bitmap of secondary partitions */
+ public long s_secblock; /* block size of secondary partition(s) */
+ /* 0 = 1*512 words, n = (n+1)*512 words */
+ public long s_secnblks; /* number of 512 wds blocks in secondary */
+ public long s_sbdbparts; /* bitmap of partitions with file system data */
+ /* including super blocks, dynamic block */
+ /* and free block bitmaps (only primary */
+ /* partitions may contain these) */
+ public long s_rootdparts; /* bitmap of partitions with root directory */
+ /* (only primary partitions) */
+ public long s_nudparts; /* bitmap of no-user-data partitions */
+ /* (only primary partitions) */
+ public long s_nsema; /* SFS: # fs semaphores to allocate */
+ public long s_priactive; /* bitmap of primary partitions which contain */
+ /* active (up to date) dynamic blocks and */
+ /* free block bitmaps. All bits set indicate */
+ /* that all primary partitions are active, */
+ /* and no kernel manipulation of active flag */
+ /* is allowed. */
+ public long s_sfs_arbiterid;/* SFS Arbiter ID */
+ [MarshalAs(UnmanagedType.ByValArray, SizeConst = 91)]
+ public long[] s_fill; /* reserved */
+ }
+
+ const ulong UNICOS_Magic = 0x6e6331667331636e;
+ const ulong UNICOS_Secure = 0xcd076d1771d670cd;
+
+ public UNICOS()
+ {
+ Name = "UNICOS Filesystem Plugin";
+ PluginUUID = new Guid("61712F04-066C-44D5-A2A0-1E44C66B33F0");
+ CurrentEncoding = Encoding.GetEncoding("iso-8859-15");
+ }
+
+ public UNICOS(ImagePlugins.ImagePlugin imagePlugin, Partition partition, Encoding encoding)
+ {
+ Name = "UNICOS Filesystem Plugin";
+ PluginUUID = new Guid("61712F04-066C-44D5-A2A0-1E44C66B33F0");
+ if(encoding == null)
+ CurrentEncoding = Encoding.GetEncoding("iso-8859-15");
+ else
+ CurrentEncoding = encoding;
+ }
+
+ public override bool Identify(ImagePlugins.ImagePlugin imagePlugin, Partition partition)
+ {
+ if(imagePlugin.GetSectorSize() < 512)
+ return false;
+
+ UNICOS_Superblock unicosSb = new UNICOS_Superblock();
+
+ uint sbSize = (uint)((Marshal.SizeOf(unicosSb)) / imagePlugin.GetSectorSize());
+ if((Marshal.SizeOf(unicosSb)) % imagePlugin.GetSectorSize() != 0)
+ sbSize++;
+
+ byte[] sector = imagePlugin.ReadSector(partition.Start, sbSize);
+ if(sector.Length < Marshal.SizeOf(unicosSb))
+ return false;
+
+ unicosSb = BigEndianMarshal.ByteArrayToStructureBigEndian(sector);
+
+ DicConsole.DebugWriteLine("UNICOS plugin", "magic = 0x{0:X16} (expected 0x{1:X16})", unicosSb.s_magic, UNICOS_Magic);
+
+ return unicosSb.s_magic == UNICOS_Magic;
+ }
+
+ public override void GetInformation(ImagePlugins.ImagePlugin imagePlugin, Partition partition, out string information)
+ {
+ information = "";
+ if(imagePlugin.GetSectorSize() < 512)
+ return;
+
+ UNICOS_Superblock unicosSb = new UNICOS_Superblock();
+
+ uint sbSize = (uint)((Marshal.SizeOf(unicosSb)) / imagePlugin.GetSectorSize());
+ if((Marshal.SizeOf(unicosSb)) % imagePlugin.GetSectorSize() != 0)
+ sbSize++;
+
+ byte[] sector = imagePlugin.ReadSector(partition.Start, sbSize);
+ if(sector.Length < Marshal.SizeOf(unicosSb))
+ return;
+
+ unicosSb = BigEndianMarshal.ByteArrayToStructureBigEndian(sector);
+
+
+ if(unicosSb.s_magic != UNICOS_Magic)
+ return;
+
+ StringBuilder sb = new StringBuilder();
+
+ sb.AppendLine("UNICOS filesystem");
+ if(unicosSb.s_secure == UNICOS_Secure)
+ sb.AppendLine("Volume is secure");
+ sb.AppendFormat("Volume contains {0} partitions", unicosSb.s_npart).AppendLine();
+ sb.AppendFormat("{0} bytes per sector", unicosSb.s_iounit).AppendLine();
+ sb.AppendLine("4096 bytes per block");
+ sb.AppendFormat("{0} data blocks in volume", unicosSb.s_fsize).AppendLine();
+ sb.AppendFormat("Root resides on inode {0}", unicosSb.s_root).AppendLine();
+ sb.AppendFormat("{0} inodes in volume", unicosSb.s_isize).AppendLine();
+ sb.AppendFormat("Volume last updated on {0}", DateHandlers.UNIXToDateTime(unicosSb.s_time)).AppendLine();
+ if(unicosSb.s_error > 0)
+ sb.AppendFormat("Volume is dirty, error code = 0x{0:X16}", unicosSb.s_error).AppendLine();
+ sb.AppendFormat("Volume name: {0}", StringHandlers.CToString(unicosSb.s_fname, CurrentEncoding)).AppendLine();
+
+ information = sb.ToString();
+
+ xmlFSType = new Schemas.FileSystemType
+ {
+ Type = "UNICOS filesystem",
+ ClusterSize = 4096,
+ Clusters = unicosSb.s_fsize,
+ VolumeName = StringHandlers.CToString(unicosSb.s_fname, CurrentEncoding),
+ ModificationDate = DateHandlers.UNIXToDateTime(unicosSb.s_time),
+ ModificationDateSpecified = true
+ };
+ xmlFSType.Dirty |= unicosSb.s_error > 0;
+ }
+
+ 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/README.md b/README.md
index 87dcf2c3..db675058 100644
--- a/README.md
+++ b/README.md
@@ -151,6 +151,7 @@ Supported file systems for identification and information only
* SmartFileSystem
* SolarOS file system
* Squash file system
+* UNICOS file system
* UNIX System V file system
* UNIX Version 7 file system
* Universal Disk Format (UDF)