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From: AWalker@RED.RUTGERS.EDU (*Hobbit*)
Newsgroups: comp.os.vms
Subject: interprocess communication without privs
Message-ID: <12336250283.21.AWALKER@RED.RUTGERS.EDU>
Date: Sun, 20-Sep-87 21:26:43 EDT
Article-I.D.: RED.12336250283.21.AWALKER
Posted: Sun Sep 20 21:26:43 1987
Date-Received: Mon, 21-Sep-87 04:03:18 EDT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The ARPA Internet
Lines: 11

You don't need any more than the normal two privs to get things talking via
a mailbox -- the problem is cluing the other process in as to which mailbox
is yours.  This information [like a logical name mbx$pid_000007a6] could
be kept in a> a world-readable, owner-writeable logical name table or b>
a file or c> something else I haven't thought of at the moment.  Mailboxes
would probably be quite a bit faster than files, since you'd avoid the
open/close overhead, and the mailbox device would vanish with the process,
signaling to those sending to it that something was wrong.

_H*
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