Blocking the access to the device files.

Hello All, ZFS file system has a property called devices. If turned off, ZFS would not allow access to the device files (block/character) present on the file system. I want to implement the same behavior on the a Linux File System. I can always check for device files in open/read/write/mmap functions, but I am looking for better implemention. Does any of the FS on Linux has this facility or Is there any mount flag that I can use? Thanks and Regards, Prasad