I have an Ubuntu file server (samba) sharing a folder structure with a Windows 7 computer classroom. All users use the same user/pass to access the folders and have read/write permissions.  I would like to prevent users from moving or deleting folders, but keep the file permissions. In other words, I would like to protect my folder structure, but allow users to add/delete/rename/move files within that structure.How can I do that?
Allow file manipulation but block folder/subfolder manipulation?
linux;permissions;samba