How can I make UMDF driver write to file?

问题

I want to log a string to an external file in my UMDF driver. For example

// create/open file CString filePath = _T("C:\\Metric.csv"); CHandle hFile(CreateFile(filePath, GENERIC_WRITE, 0, NULL, OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL));

This returns 5 (Access Denied).

Is this because UMDF driver cannot access files or resources that require user credentials? If so, which dir can i possibly create/modify a csv file.

来源：https://stackoverflow.com/questions/54919618/how-can-i-make-umdf-driver-write-to-file