private static Exception ThrowLastWin32Error(string path, string message, int?lastErrorArg = null)
{
var lastError = lastErrorArg ?? Marshal.GetLastWin32Error();
if (OperatingSystemHelper.IsUnixOS)
{
throw new IOException(message);
}
else
{
var errorMessage = NativeMethods.GetErrorMessage(lastError);
message = string.Format(CultureInfo.InvariantCulture, "{0} last error: [{1}] (error code {2})", message, errorMessage, lastError);
switch (lastError)
{
case ERROR_FILE_NOT_FOUND:
throw new FileNotFoundException(message);
case ERROR_PATH_NOT_FOUND:
throw new DirectoryNotFoundException(message);
case ERROR_ACCESS_DENIED:
case ERROR_SHARING_VIOLATION:
string extraMessage = string.Empty;
if (path != null)
{
extraMessage = " " + (FileUtilities.TryFindOpenHandlesToFile(path, out var info, printCurrentFilePath: false)
? info
: "Attempt to find processes with open handles to the file failed.");
}
throw new UnauthorizedAccessException($"{message}.{extraMessage}");
default:
throw new IOException(message, ExceptionUtilities.HResultFromWin32(lastError));
}
}
}
private static bool LoadFilterSuccessful(int win32Error)
{
// The result of trying to load the filter should be either S_OK or the filter should be there/already running
return(win32Error == 0 || win32Error == ExceptionUtilities.HResultFromWin32(ERROR_ALREADY_EXISTS) || win32Error == ExceptionUtilities.HResultFromWin32(ERROR_SERVICE_ALREADY_RUNNING));
}
