Added IOCTL skeletons.

DiscImageChef.Devices/Linux/Structs.cs

@@ -0,0 +1,39 @@
+using System;
+using System.Runtime.InteropServices;
+
+namespace DiscImageChef.Devices.Linux
+{
+    static class Structs
+    {
+        [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] */
+        }
+    }
+}
+