Re: safe cpu'ing

On Mon, 8 Sep 2003, Eric Grosse wrote:

> Remember Ken's compiler hack, described in his Turing lecture?

yes. Good example. 

The first time I had trouble with Condor was an organization where a great 
level of trust was present, but I could not merge two Condor flocks 
because of they used autmounter to solve file access problems, with the 
following result
- remote proc can see local system's files
- local proc can see remote system's files

(I'm aware of tricks you can play with chroot, and they don't actually 
help as much as you might think).

the risk, even though in most cases inadvertant, was too high. Obviously 
the bar here is so low that while Unix can not jump it, Plan 9 easily can. 

I guess that's the zeroth case: trust prevails, but we're trying to avoid 
accidents. Then there's case 1, trust prevails, but some users are bad; 
and case 2, trust is not possible.

ron