[cap-talk] Singularity: A Capability-Based OS ?

[Karp, Alan H]

Jack Lloyd wrote:

> For example, a SIP can only access a file if it receives an
> endpoint to the file system from another SIP.

I haven't read the singularity stuff in quite a while, but my impression at the time was
"Missed it by THAT much" to quote Maxwell Smart.  (You won't know who that is if you
don't have gray hair.)  This part of the quote concerns me.  How is which file I can use
controlled if I'm given an endpoint to the file system?  A real capability person would
have said, "A SIP can only access a file if it receives an endpoint to the file from
another SIP."

________________________
Alan Karp
Principal Scientist
Virus Safe Computing Initiative
Hewlett-Packard Laboratories
1501 Page Mill Road
Palo Alto, CA 94304
(650) 857-3967, fax (650) 857-7029
http://www.hpl.hp.com/personal/Alan_Karp