This is a Golang binding for the native WinFSP API, with which you can implement a Windows native filesystem based on the WinFSP's framework.
There's also another Golang binding of WinFSP named cgofuse, which is based on WinFSP's FUSE compatible layer API instead of the native one. However I've found it problematic when implementing a filesystem backed by a Window's native filesystem, due to the semantic difference of POSIX style file API and Window's file API. This is the major motive I write this binding.
The go-winfsp binding should offers a Windows dedicated but seamless API to implement a filesystem. However, the caller need not to worry about adapting to different platform's API, since the API also provides a Golang standard library style interface for describing a filesystem, and the adaption job should be just like a breeze.