diff --git a/DiscImageChef.Devices/ChangeLog b/DiscImageChef.Devices/ChangeLog
index 84f4a516..bbd27297 100644
--- a/DiscImageChef.Devices/ChangeLog
+++ b/DiscImageChef.Devices/ChangeLog
@@ -1,3 +1,13 @@
+2015-10-06  Natalia Portillo  <claunia@claunia.com>
+
+	* Linux/Enums.cs:
+	* Linux/Extern.cs:
+	* Linux/Structs.cs:
+	  Filled Linux enums.
+
+	* Windows/Enums.cs:
+	  Typo
+
 2015-10-06  Natalia Portillo  <claunia@claunia.com>
 
 	* Windows/Extern.cs:
diff --git a/DiscImageChef.Devices/Linux/Enums.cs b/DiscImageChef.Devices/Linux/Enums.cs
index d9e7bb67..31b7f895 100644
--- a/DiscImageChef.Devices/Linux/Enums.cs
+++ b/DiscImageChef.Devices/Linux/Enums.cs
@@ -2,19 +2,151 @@
 
 namespace DiscImageChef.Devices.Linux
 {
-    static class Enums
+    [Flags]
+    enum FileFlags : int
     {
-        internal const int O_RDONLY = 0;
-        internal const int O_RDWR = 2;
+        /// <summary>
+        /// O_RDONLY
+        /// </summary>
+        Readonly = 00000000,
+        /// <summary>
+        /// O_WRONLY
+        /// </summary>
+        Writeonly = 00000001,
+        /// <summary>
+        /// O_RDWR
+        /// </summary>
+        ReadWrite = 00000002,
+        /// <summary>
+        /// O_CREAT
+        /// </summary>
+        OpenOrCreate = 00000100,
+        /// <summary>
+        /// O_EXCL
+        /// </summary>
+        CreateNew = 00000200,
+        /// <summary>
+        /// O_NOCTTY
+        /// </summary>
+        NoControlTTY = 00000400,
+        /// <summary>
+        /// O_TRUNC
+        /// </summary>
+        Truncate = 00001000,
+        /// <summary>
+        /// O_APPEND
+        /// </summary>
+        Append = 00002000,
+        /// <summary>
+        /// O_NONBLOCK
+        /// </summary>
+        NonBlocking = 00004000,
+        /// <summary>
+        /// O_DSYNC
+        /// </summary>
+        Synchronous = 00010000,
+        /// <summary>
+        /// O_ASYNC
+        /// </summary>
+        Async = 00020000,
+        /// <summary>
+        /// O_DIRECT
+        /// </summary>
+        Direct = 00040000,
+        /// <summary>
+        /// O_LARGEFILE
+        /// </summary>
+        LargeFile = 00100000,
+        /// <summary>
+        /// O_DIRECTORY
+        /// </summary>
+        Directory = 00200000,
+        /// <summary>
+        /// O_NOFOLLOW
+        /// </summary>
+        NoFollowSymlink = 00400000,
+        /// <summary>
+        /// O_NOATIME
+        /// </summary>
+        NoAccessTime = 01000000,
+        /// <summary>
+        /// O_CLOEXEC
+        /// </summary>
+        CloseOnExec = 02000000
+    }
 
-        internal const ulong SG_GET_VERSION_NUM = 0x2282;
-        internal const ulong SG_IO = 0x2285;
+    /// <summary>
+    /// Direction of SCSI transfer
+    /// </summary>
+    enum ScsiIoctlDirection : int
+    {
+        /// <summary>
+        /// No data transfer happens
+        /// SG_DXFER_NONE
+        /// </summary>
+        None = -1,
+        /// <summary>
+        /// From host to device
+        /// SG_DXFER_TO_DEV
+        /// </summary>
+        Out = -2,
+        /// <summary>
+        /// From device to host
+        /// SG_DXFER_FROM_DEV
+        /// </summary>
+        In = -3,
+        /// <summary>
+        /// Bidirectional device/host
+        /// SG_DXFER_TO_FROM_DEV
+        /// </summary>
+        Unspecified = -4,
+        /// <summary>
+        /// Unspecified
+        /// SG_DXFER_UNKNOWN
+        /// </summary>
+        Unknown = -5
+    }
 
-        internal const int SG_DXFER_FROM_DEV = -3;
+    enum LinuxIoctl : ulong
+    {
+        SG_EMULATED_HOST = 0x2203,
+        SG_GET_VERSION_NUM = 0x2282,
+        SG_IO = 0x2285,
+        SG_GET_SCSI_ID = 0x2276,
+    }
 
-        internal const uint SG_INFO_OK_MASK = 0x1;
-        internal const uint SG_INFO_OK = 0x0;          /* no sense, host nor driver "noise" */
-        internal const uint SG_INFO_CHECK = 0x1;
+    [Flags]
+    enum SgInfo : uint
+    {
+        /// <summary>
+        /// Mask to check OK
+        /// </summary>
+        OkMask = 0x01,
+        /// <summary>
+        /// No sense or driver noise
+        /// </summary>
+        Ok = 0x00,
+        /// <summary>
+        /// Check Condition
+        /// </summary>
+        CheckCondition = 0x01,
+
+        /// <summary>
+        /// Direct I/O mask
+        /// </summary>
+        DirectIoMask = 0x06,
+        /// <summary>
+        /// Transfer via kernel buffers (or no transfer)
+        /// </summary>
+        IndirectIo = 0x00,
+        /// <summary>
+        /// Direct I/O performed
+        /// </summary>
+        DirectIo = 0x02,
+        /// <summary>
+        /// Partial direct and partial indirect I/O
+        /// </summary>
+        MixedIo = 0x04
     }
 }
 
diff --git a/DiscImageChef.Devices/Linux/Extern.cs b/DiscImageChef.Devices/Linux/Extern.cs
index 8aeb659f..19f21f6e 100644
--- a/DiscImageChef.Devices/Linux/Extern.cs
+++ b/DiscImageChef.Devices/Linux/Extern.cs
@@ -5,7 +5,10 @@ namespace DiscImageChef.Devices.Linux
     static class Extern
     {
         [DllImport("libc", CharSet = CharSet.Ansi, SetLastError = true)]
-        internal static extern int open(string pathname, int flags);
+        internal static extern int open(
+            string pathname,
+            [MarshalAs(UnmanagedType.U4)]
+            FileFlags flags);
 
         [DllImport("libc")]
         internal static extern int close(int fd);
@@ -14,7 +17,7 @@ namespace DiscImageChef.Devices.Linux
         internal static extern int ioctlInt(int fd, ulong request, out int value);
 
         [DllImport("libc", EntryPoint="ioctl", SetLastError = true)]
-        internal static extern int ioctlSg(int fd, ulong request, ref Structs.sg_io_hdr_t value);
+        internal static extern int ioctlSg(int fd, ulong request, ref sg_io_hdr_t value);
     }
 }
 
diff --git a/DiscImageChef.Devices/Linux/Structs.cs b/DiscImageChef.Devices/Linux/Structs.cs
index f98d18d1..bc9d223a 100644
--- a/DiscImageChef.Devices/Linux/Structs.cs
+++ b/DiscImageChef.Devices/Linux/Structs.cs
@@ -3,37 +3,34 @@ using System.Runtime.InteropServices;
 
 namespace DiscImageChef.Devices.Linux
 {
-    static class Structs
+    [StructLayout(LayoutKind.Sequential)]
+    struct sg_io_hdr_t
     {
-        [StructLayout(LayoutKind.Sequential)]
-        internal struct sg_io_hdr_t
-        {
-            /// <summary>
-            /// Always 'S' for SG v3
-            /// </summary>
-            public int interface_id;           /* [i] 'S' (required) */
-            public int dxfer_direction;        /* [i] */
-            public byte cmd_len;      /* [i] */
-            public byte mx_sb_len;    /* [i] */
-            public ushort iovec_count; /* [i] */
-            public uint dxfer_len;     /* [i] */
-            public IntPtr dxferp;              /* [i], [*io] */
-            public IntPtr cmdp;       /* [i], [*i]  */
-            public IntPtr sbp;        /* [i], [*o]  */
-            public uint timeout;       /* [i] unit: millisecs */
-            public uint flags;         /* [i] */
-            public int pack_id;                /* [i->o] */
-            public IntPtr usr_ptr;             /* [i->o] */
-            public byte status;       /* [o] */
-            public byte masked_status;/* [o] */
-            public byte msg_status;   /* [o] */
-            public byte sb_len_wr;    /* [o] */
-            public ushort host_status; /* [o] */
-            public ushort driver_status;/* [o] */
-            public int resid;                  /* [o] */
-            public uint duration;      /* [o] */
-            public uint info;          /* [o] */
-        }
+        /// <summary>
+        /// Always 'S' for SG v3
+        /// </summary>
+        public int interface_id;           /* [i] 'S' (required) */
+        public int dxfer_direction;        /* [i] */
+        public byte cmd_len;      /* [i] */
+        public byte mx_sb_len;    /* [i] */
+        public ushort iovec_count; /* [i] */
+        public ScsiIoctlDirection dxfer_len;     /* [i] */
+        public IntPtr dxferp;              /* [i], [*io] */
+        public IntPtr cmdp;       /* [i], [*i]  */
+        public IntPtr sbp;        /* [i], [*o]  */
+        public uint timeout;       /* [i] unit: millisecs */
+        public uint flags;         /* [i] */
+        public int pack_id;                /* [i->o] */
+        public IntPtr usr_ptr;             /* [i->o] */
+        public byte status;       /* [o] */
+        public byte masked_status;/* [o] */
+        public byte msg_status;   /* [o] */
+        public byte sb_len_wr;    /* [o] */
+        public ushort host_status; /* [o] */
+        public ushort driver_status;/* [o] */
+        public int resid;                  /* [o] */
+        public uint duration;      /* [o] */
+        public SgInfo info;          /* [o] */
     }
 }
 
diff --git a/DiscImageChef.Devices/Windows/Enums.cs b/DiscImageChef.Devices/Windows/Enums.cs
index 5a33ef0c..00e1f09f 100644
--- a/DiscImageChef.Devices/Windows/Enums.cs
+++ b/DiscImageChef.Devices/Windows/Enums.cs
@@ -236,8 +236,5 @@ namespace DiscImageChef.Devices.Windows
         /// </summary>
         IOCTL_SCSI_GET_ADDRESS = 0x41018
     }
-    /// <summary>
-    /// AAAAA
-    /// </summary>
 }