Mounts with fs type 'none'

[Steve Greenland <steveg@moregruel.net>]

I've a request to have checksecurity skip searching filesystems with
type 'none' (not device 'none'). A brief check leads me to believe that
these are result of mount --bind, which means that the mount in question
is either searched or skipped in its "real" location, and need not be
searched in its "bind" location. Is this correct? Are there other types
of mounts that lead to type=none in the output of 'mount'?

Thanks,
Steve
-- 
Steve Greenland <steveg@moregruel.net>