如何检测重解析点?

确定目录是否为挂载文件夹 就是答案.它展示了如何确定一个文件夹是否是一个重新解析点，从而确定它是否也可能是:一个连接点、一个符号链接或一个挂载点.

How do I detect a reparse point?

Determining Whether a Directory Is a Mounted Folder is the answer. It shows how to determine whether a folder is a reparse point, and thus if it is also potentially: a Junction or a Symlink or a Mount-point.