From owner-freebsd-hackers Thu Feb 14 10:59:22 2002 Delivered-To: freebsd-hackers@freebsd.org Received: from smtpproxy1.mitre.org (smtpproxy1.mitre.org [129.83.20.90]) by hub.freebsd.org (Postfix) with ESMTP id 2914737B405 for ; Thu, 14 Feb 2002 10:59:18 -0800 (PST) Received: from avsrv1.mitre.org (avsrv1.mitre.org [129.83.20.58]) by smtpproxy1.mitre.org (8.11.3/8.11.3) with ESMTP id g1EIxH803281 for ; Thu, 14 Feb 2002 13:59:17 -0500 (EST) Received: from MAILHUB2 (mailhub2.mitre.org [129.83.221.18]) by smtpsrv1.mitre.org (8.11.3/8.11.3) with ESMTP id g1EIxFk24487 for ; Thu, 14 Feb 2002 13:59:15 -0500 (EST) Received: from dhcp-48-37.mitre.org (128.29.48.37) by mailhub2.mitre.org with SMTP id 9252992; Thu, 14 Feb 2002 13:59:11 -0500 Message-ID: <3C6C0965.206509B4@mitre.org> Date: Thu, 14 Feb 2002 14:00:53 -0500 From: "PSI, Mike Smith" Organization: The MITRE Corporation X-Mailer: Mozilla 4.76 [en]C-20010313M (Win95; U) X-Accept-Language: en MIME-Version: 1.0 To: freebsd-hackers@freebsd.org Subject: Kernel after halt issued Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG I just heard someone say that they believed that the kernel was still running after a halt is issued, but just cannot (won't?) create any processes. So while I realize this person may not know what they are talking about (and am showing my own ignorance for even listening), the question is... Is the kernel still running after a halt? If it is, then there are very interesting possibilities for building in very specific capabilities in the kernel, then under "halt" condition have those capabilities available. AND NOTHING ELSE! Interesting from a security standpoint. Plus it would not require to to strip your system down to bare bones to eliminate holes. You could bring it up to a fully capable system at any time it was necessary. So Is the kernel still running after a halt? If so, has anyone found a way to take advantage of this? (Not THE) Mike Smith To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message