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Common/DTS.Common.Utilities/.svn/pristine/18/186f74f5a01ece8f6e16946fc695029aef9a1d68.svn-base

@@ -0,0 +1,113 @@
+using System;
+using System.Runtime.InteropServices;
+
+namespace DTS.Common.Utilities
+{
+    //disables xml comments missing warning - this file is just a wrapper for win32
+    //imports, documentation can be found in win32 api or headers.
+#pragma warning disable 1591
+
+    /// <summary>
+    /// win32 I/O declarations
+    /// </summary>
+    public class FileIOApiDeclarations
+    {
+
+        // API declarations relating to file I/O.
+
+        // ******************************************************************************
+        // API constants
+        // ******************************************************************************
+
+        public const uint GENERIC_READ = 0x80000000;
+        public const uint GENERIC_WRITE = 0x40000000;
+        public const uint FILE_SHARE_READ = 0x00000001;
+        public const uint FILE_SHARE_WRITE = 0x00000002;
+        public const uint FILE_FLAG_OVERLAPPED = 0x40000000;
+        public const int INVALID_HANDLE_VALUE = -1;
+        public const short OPEN_EXISTING = 3;
+        public const int WAIT_TIMEOUT = 0x102;
+        public const uint WAIT_OBJECT_0 = 0;
+        public const uint WAIT_FAILED = 0xFFFFFFFF;
+        public const uint WAIT_ABANDONED = 0x00000080;
+        public const int FSCTL_SET_COMPRESSION = 0x9C040;
+
+        // ******************************************************************************
+        // Structures and classes for API calls, listed alphabetically
+        // ******************************************************************************
+
+        [StructLayout(LayoutKind.Sequential)]
+        public struct OVERLAPPED
+        {
+            public int Internal;
+            public int InternalHigh;
+            public int Offset;
+            public int OffsetHigh;
+            public int hEvent;
+        }
+
+        [StructLayout(LayoutKind.Sequential)]
+        public struct SECURITY_ATTRIBUTES
+        {
+            public int nLength;
+            public int lpSecurityDescriptor;
+            public int bInheritHandle;
+        }
+
+        // ******************************************************************************
+        // API functions, listed alphabetically
+        // ******************************************************************************
+
+        [DllImport("kernel32.dll")]
+        public static extern int CancelIo(int hFile);
+
+        [DllImport("kernel32.dll")]
+        public static extern int CloseHandle(int hObject);
+
+        [DllImport("kernel32.dll", CharSet = CharSet.Auto)]
+        public static extern int CreateEvent(ref SECURITY_ATTRIBUTES SecurityAttributes, int bManualReset, int bInitialState, string lpName);
+
+        [DllImport("kernel32.dll", CharSet = CharSet.Auto)]
+        public static extern int CreateFile(string lpFileName,
+                                            uint dwDesiredAccess,
+                                            uint dwShareMode,
+                                            ref SECURITY_ATTRIBUTES lpSecurityAttributes,
+                                            int dwCreationDisposition,
+                                            uint dwFlagsAndAttributes,
+                                            int hTemplateFile);
+
+        [DllImport("kernel32.dll")]
+        public static extern int GetLastError();
+
+        [DllImport("kernel32.dll")]
+        //    static public extern int ReadFile(int hFile, ref byte lpBuffer, int nNumberOfBytesToRead, ref int lpNumberOfBytesRead, ref OVERLAPPED lpOverlapped);
+        public static extern int ReadFile(int hFile, ref byte lpBuffer, int nNumberOfBytesToRead, ref int lpNumberOfBytesRead, int lpOverlapped);
+
+        [DllImport("kernel32.dll")]
+        public static extern uint WaitForSingleObject(int hHandle, int dwMilliseconds);
+
+        [DllImport("kernel32.dll")]
+        public static extern int WriteFile(int hFile, ref byte lpBuffer, int nNumberOfBytesToWrite, ref int lpNumberOfBytesWritten, int lpOverlapped);
+
+        [DllImport("kernel32.dll", SetLastError = true, CharSet = CharSet.Auto)]
+
+        public static extern int DeviceIoControl(IntPtr hDevice,
+                                                 int dwIoControlCode,
+                                                 ref short lpInBuffer,
+                                                 int nInBufferSize,
+                                                 IntPtr lpOutBuffer,
+                                                 int nOutBufferSize,
+                                                 ref int lpBytesReturned,
+                                                 IntPtr lpOverlapped);
+
+        /*public static extern bool DeviceIoControl(int hDevice,
+                                                  int dwIoControlCode,
+                                                  ref int lpInBuffer,
+                                                  uint nInBufferSize,
+                                                  ref int lpOutBuffer,
+                                                  uint nOutBufferSize,
+                                                  out int lpBytesReturned,
+                                                  uint lpOverlapped);*/
+    }
+#pragma warning restore 1591
+}