From owner-freebsd-hackers Thu Aug 8 09:27:01 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id JAA18391 for hackers-outgoing; Thu, 8 Aug 1996 09:27:01 -0700 (PDT) Received: from lestat.nas.nasa.gov (lestat.nas.nasa.gov [129.99.50.29]) by freefall.freebsd.org (8.7.5/8.7.3) with ESMTP id JAA18379 for ; Thu, 8 Aug 1996 09:26:59 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by lestat.nas.nasa.gov (8.7.5/8.6.12) with SMTP id JAA20847; Thu, 8 Aug 1996 09:19:22 -0700 (PDT) Message-Id: <199608081619.JAA20847@lestat.nas.nasa.gov> X-Authentication-Warning: lestat.nas.nasa.gov: Host localhost [127.0.0.1] didn't use HELO protocol To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch) Cc: freebsd-hackers@freebsd.org (FreeBSD hackers) Subject: Re: Q:Meanings of kern.securelevel values Reply-To: Jason Thorpe From: Jason Thorpe Date: Thu, 08 Aug 1996 09:19:22 -0700 Sender: owner-hackers@freebsd.org X-Loop: FreeBSD.org Precedence: bulk On Thu, 8 Aug 1996 09:09:40 +0200 (MET DST) J Wunsch wrote: > What other problems did you encounter in raising the securelevel, > except the known problem with the video frame buffer vs. Xserver > access through /dev/mem? Should one expect many problems, or only > a few minor ones? On some NetBSD platforms (alpha, sparc, sun3, mvme68k, at least), installing the boot block requires simultaneous access to both the file system and the raw device on which the file system lives. You can't do this at securelevel == 1. Given that, I don't particularly like bring my workstation at work (an ss2 running NetBSD) down into single-user mode to install a boot block on a NetBSD/sparc boot floppy. Anyhow, there's an example of another thing that the INSECURE option is convenient for under NetBSD. It's not clear to me that it would apply to FreeBSD at all, but you asked, so... :-) Ciao. -- save the ancient forests - http://www.bayarea.net/~thorpej/forest/ -- Jason R. Thorpe thorpej@nas.nasa.gov NASA Ames Research Center Home: 408.866.1912 NAS: M/S 258-6 Work: 415.604.0935 Moffett Field, CA 94035 Pager: 415.428.6939