Re: Random Register Contents

Alan Cox (alan@lxorguk.ukuu.org.uk)
Mon, 2 Nov 1998 16:33:50 +0000 (GMT)

> If you're worried about covert channels on UNIX, you should kill the
> filesystem asap, together with 90% of the rest of the system (yes, UNIX
> "security" is really that broken, by design).

Xenix B2 doesnt kill the file system - you dont need to. Remembering you
cant see another persons files if you are partitioned in a suitably paranoid
way Xenix B2 has an enforced 30 second delay on df and some similar stuff
on running out of disk space.

What Im not sure of is how they addressed signalling via swap rate and via
the scheduler

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