Date: Sat, 22 Aug 1998 10:21:08 -0500 (CDT) From: Joel Ray Holveck <joelh@gnu.org> To: bright@www.hotjobs.com Cc: karpen@ocean.campus.luth.se, rabtter@aye.net, hackers@FreeBSD.ORG Subject: Re: I want to break binary compatibility. Message-ID: <199808221521.KAA04879@detlev.UUCP> In-Reply-To: <Pine.BSF.3.96.980821203617.3004A-100000@bright.fx.genx.net> (message from Alfred Perlstein on Fri, 21 Aug 1998 20:37:09 -0500 (EST)) References: <Pine.BSF.3.96.980821203617.3004A-100000@bright.fx.genx.net>
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Sorry about the null msg; slip of the fingers. >> One simple way could be to just change the "magic number" on the binaries, >> maybe, and disable all linux compat, etc? > hrm, how's about doing that, but instead of giving an error, you shutdown > the system and flush all logs. sounds bad, but might help you catch them > in the act. Hmm... I would tend to prefer something more along the lines of something like: sendpage -l 0 -p rabtter Attempt to use bad magic on `hostname -s` while [ ! -e /etc/shutup ] ; do cp alarm.au /dev/audio ; done rm /etc/shutup That way, you don't get an LOS, you can do any analysis you need to while the perpetrators are still on-line, you (hopefully) have them logged in for longer (while they try to figure out the problem), etc, etc. With a fair bit of work, that can also be implemented in the kernel (although I'd use a kernel variable that could be set from ddb instead of -e /etc/shutup). However, having the kernel launch such a process from some random file and make it look like a sendmail sending mail or something may be easier, particularly since you're in a bit of a rush. Best, joelh -- Joel Ray Holveck - joelh@gnu.org - http://www.wp.com/piquan Fourth law of programming: Anything that can go wrong wi sendmail: segmentation violation - core dumped To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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