Exemplo n.º 1
0
        internal static void ControlWithOutput <TStructure>(ChangeJournalSafeHandle handle, Win32ControlCode code, ref TStructure structure) where TStructure : struct
        {
            bool     controlResult;
            GCHandle structureHandle;
            IntPtr   structurePointer;

            // get our object pointer
            structureHandle  = GCHandle.Alloc(structure, GCHandleType.Pinned);
            structurePointer = structureHandle.AddrOfPinnedObject();

            try
            {
                controlResult = Win32Methods.DeviceIoControl(handle, (uint)code, IntPtr.Zero, 0, structurePointer, (uint)Marshal.SizeOf(structure), out _, IntPtr.Zero);
            }
            finally
            {
                // always release GH handle
                structureHandle.Free();
            }

            if (!controlResult)
            {
                throw new Win32Exception(Marshal.GetLastWin32Error());
            }

            structure = Marshal.PtrToStructure <TStructure>(structurePointer);
        }
Exemplo n.º 2
0
        internal static byte[] ControlWithInput <TStructure>(ChangeJournalSafeHandle handle, Win32ControlCode code, ref TStructure structure, int bufferlen) where TStructure : struct
        {
            uint     datalen;
            bool     controlResult;
            GCHandle structureHandle;
            GCHandle bufferHandle;
            IntPtr   structurePointer;
            IntPtr   bufferPointer;

            var buffer = new byte[bufferlen];

            bufferHandle     = GCHandle.Alloc(buffer, GCHandleType.Pinned);
            structureHandle  = GCHandle.Alloc(structure, GCHandleType.Pinned);
            bufferPointer    = bufferHandle.AddrOfPinnedObject();
            structurePointer = structureHandle.AddrOfPinnedObject();

            try
            {
                controlResult = Win32Methods.DeviceIoControl(handle, (uint)code, structurePointer, (uint)Marshal.SizeOf(structure), bufferPointer, (uint)buffer.Length, out datalen, IntPtr.Zero);
            }
            finally
            {
                structureHandle.Free();
                bufferHandle.Free();
            }

            if (!controlResult)
            {
                throw new Win32Exception(Marshal.GetLastWin32Error());
            }

            if (datalen < bufferlen && datalen != 0)
            {
                var tempBuffer = new byte[datalen];
                Array.Copy(buffer, 0, tempBuffer, 0, datalen);
                buffer = tempBuffer;
            }

            return(buffer);
        }
Exemplo n.º 3
0
 protected override bool ReleaseHandle()
 {
     return(Win32Methods.CloseHandle(handle));
 }