public override bool GetFileInfo(string fileName, IntPtr fileHandle, out DateTime lastWriteTime, out long fileLength)
{
Win32FileHelper.BY_HANDLE_FILE_INFORMATION fi;
if (Win32FileHelper.GetFileInformationByHandle(fileHandle, out fi))
{
lastWriteTime = DateTime.FromFileTime(fi.ftLastWriteTime);
fileLength = fi.nFileSizeLow + (((long)fi.nFileSizeHigh) << 32);
return(true);
}
else
{
lastWriteTime = DateTime.MinValue;
fileLength = -1;
return(false);
}
}
private FileStream WindowsCreateFile(string fileName, bool allowConcurrentWrite)
{
int fileShare = Win32FileHelper.FILE_SHARE_READ;
if (allowConcurrentWrite)
{
fileShare |= Win32FileHelper.FILE_SHARE_WRITE;
}
if (_createParameters.EnableFileDelete && PlatformDetector.GetCurrentRuntimeOS() != RuntimeOS.Windows)
{
fileShare |= Win32FileHelper.FILE_SHARE_DELETE;
}
IntPtr hFile = Win32FileHelper.CreateFile(
fileName,
Win32FileHelper.FileAccess.GenericWrite,
fileShare,
IntPtr.Zero,
Win32FileHelper.CreationDisposition.OpenAlways,
_createParameters.FileAttributes, IntPtr.Zero);
if (hFile.ToInt32() == -1)
{
Marshal.ThrowExceptionForHR(Marshal.GetHRForLastWin32Error());
}
FileStream returnValue;
#if DOTNET_2_0 || NETCF_2_0
Microsoft.Win32.SafeHandles.SafeFileHandle safeHandle = new Microsoft.Win32.SafeHandles.SafeFileHandle(hFile, true);
returnValue = new FileStream(safeHandle, FileAccess.Write, _createParameters.BufferSize);
#else
returnValue = new FileStream(hFile, FileAccess.Write, true, _createParameters.BufferSize);
#endif
returnValue.Seek(0, SeekOrigin.End);
return(returnValue);
}
