comp.lang.ada
 help / color / mirror / Atom feed
From: "Nick Roberts" <nickroberts@callnetuk.com>
Subject: Re: Memory allocation
Date: 2000/03/05
Date: 2000-03-05T00:00:00+00:00	[thread overview]
Message-ID: <38c30e0f@eeyore.callnetuk.com> (raw)
In-Reply-To: 89m3f4$msj$1@nnrp1.deja.com

Some may find it interesting to note that a (truly) secure operating system
cannot generally provide this specific functionality (how much free memory
is left), in order to avoid a thing called a 'covert channel'.

What it can, and should, provide, however, is a way for a program to say
'reserve x amount of memory exclusively for me'. This needs to be
accompanied by a way to say 'now unreserve it'. Can anybody tell me of an
actual OS that does just this, please?

--
Nick Roberts
http://www.adapower.com/lab/adaos








  reply	other threads:[~2000-03-05  0:00 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2000-03-01  0:00 Memory allocation Andreas
2000-03-01  0:00 ` ada_95
2000-03-02  0:00 ` ada_95
2000-03-02  0:00 ` Oliver Kellogg
2000-03-05  0:00   ` Nick Roberts [this message]
2000-03-06  0:00     ` Larry Kilgallen
replies disabled

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox