The hard thing about the matter is that it would require totally different code for all platforms.
Even on unix-like environments (where threads and such can be done by common posix), each and every OS would need it's own access module. Besides, only root can do that (most of the time)...
It'd be great if such module would exist, but it's hard to achieve.
Model of the module's API wpuld be helpfull, possible in xmi file ;)
(not that I have time to do this, but we could work out how it should work ;) )