Removing permissions to see a file list

[tmar]

I'm trying to create a program that will add directories and assign permissions to those directories based on who the directory belongs to. The root directories all have no files in them and I don't mind if a user browses to the final directory in an extension but I only want them to be able to see the list of files in that directory if they have rights to those files or that final directory. Any easy way of doing that?

I tried removing the filesystemrights.listdirectory from "everyone" and then adding rights back in for those who should see the files but that didn't help.