Filename Policy Kit

provide file creation sanity checks:
restriction to white list of allowed characters for created files.
regular expression checks for valid, (or allowed/disallowed) sequences (allows for compatibility with other systems, removal of terminal control characters, and shell expansion variables)
exclude creation of filenames that only differ by case. (for compatability with case-insensitive systems)

The second part needs to check filenames when a filesystem is mounted, (or accessed), comparing them with the above rules, and emit a warning for some errors, or hide that file.