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Date:      Fri, 20 Dec 1996 09:31:39 -0700 (MST)
From:      Nate Williams <nate@mt.sri.com>
To:        igor@alecto.physics.uiuc.edu (Igor Roshchin)
Cc:        sean@perky.gothic.net.au (Sean Winn), freebsd-security@freebsd.org
Subject:   Re: stopping users from rebooting with ctr-alt-del
Message-ID:  <199612201631.JAA23622@rocky.mt.sri.com>
In-Reply-To: <199612201504.JAA23349@alecto.physics.uiuc.edu>
References:  <Pine.BSF.3.91.961221013041.3576A-100000@perky.gothic.net.au> <199612201504.JAA23349@alecto.physics.uiuc.edu>

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> > I can already see a nice simple problem, in that it would only work after
> > login...if you need to shutdown because you can't login for some reason
> > (exhausted swap space because of a nasty process?), then this makes things
> > difficult...but it should help machines in public places around people who
> > have too much curiosity. 
> > 
> 
> Why would you need use ctrl-alt-del to reboot the machine ?
> 1. it's not a shutdown (it doesn't resync, anyhow)

Huh?  If you mean it doesn't write the contents of the disk, then you're
wrong.  I added the code so that it does indeed do a clean shutdown.

> 2. if you need to "reboot" it no matter what -
> use the power switch, or "reset" button if one is present.
> May be I am wrong, but I don't see bug difference [for Unix]
> between ctrl-alt-del and "reset" .

The difference between a clean shutdown and a hard shutdown.


Nate



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