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noisedestroyers
2026-04-17 14:55:32 -04:00
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Common/DTS.Common.IConnection/.svn/pristine/6a/6ada9fb7e41f438b82a22de025fab8ae65cd43e3.svn-base Normal file
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using System;
using Microsoft.Win32.SafeHandles;
using System.Runtime.InteropServices;
namespace DTS.Common.USBFramework
{
public class FileIODeclarations
{
// 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 class FileIO
{
public const short FILE_ATTRIBUTE_NORMAL = 0X80;
public const int FILE_FLAG_OVERLAPPED = 0X40000000;
public const short FILE_SHARE_READ = 0X1;
public const short FILE_SHARE_WRITE = 0X2;
public const uint GENERIC_READ = 0X80000000;
public const uint GENERIC_WRITE = 0X40000000;
public const int INVALID_HANDLE_VALUE = -1;
public const short OPEN_EXISTING = 3;
[StructLayout(LayoutKind.Sequential)]
public struct SECURITY_ATTRIBUTES
{
public int nLength;
public IntPtr lpSecurityDescriptor;
public int bInheritHandle;
}
[DllImport("kernel32.dll", SetLastError = true)]
public static extern bool CloseHandle(SafeFileHandle hObject);
[DllImport("kernel32.dll", SetLastError = true, CharSet = CharSet.Auto)]
public static extern SafeFileHandle CreateFile(string lpFileName, uint dwDesiredAccess, int dwShareMode, ref SECURITY_ATTRIBUTES lpSecurityAttributes, int dwCreationDisposition, int dwFlagsAndAttributes, int hTemplateFile);
}
}