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Date:      Thu, 19 Feb 1998 19:05:39 +0100 (MET)
From:      Wilko Bulte <wilko@yedi.iaf.nl>
To:        stefan@promo.de (Stefan Bethke)
Cc:        hackers@FreeBSD.ORG
Subject:   Re: Graceful shutdown by single keypress?
Message-ID:  <199802191805.TAA01110@yedi.iaf.nl>
In-Reply-To: <561614.3096881785@stefan.promo.de> from Stefan Bethke at "Feb 19, 98 12:56:25 pm"

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As Stefan Bethke wrote...

> For an exibition, we need a system that can be shut down gracefully by

CeBIT?

> As this system will be out there on its own, with no-one near with even the
> faintest knowledge of unix (or computers at all), I want it to be as rugged

		                  ^---- Really sounds like CeBIT ;-)

> as possible. Most filesystems will be mounted r/o, and those that are not
> can be reconstructed on the fly.
> 
> However, as I don't like the idea of telling people to simply cut off power
> to the system (there won't be neither monitor nor keyboard), I'm looking
> into an ATX system with APM support that can switch itself off.

> If the suspend key won't allow shutting down the system, I could also plug
> the key (or the reset key) into the LPT or COM port to be polled by some
> daemon, which then would do a shutdown with power off.
> 
> It would be acceptable for me to hack the kernel to add any necessary APM
> power-off command, if needed.

I suppose you could look into the ctl-alt-del hooks in the console driver
that currently force a reboot. Or patch the NMI hook and add a 0.25DM 
switch to the IOCHKN line. 

This would still need a manual poweroff.

W/
_     ______________________________________________________________________
 |   / o / /  _  Bulte email: wilko @ yedi.iaf.nl http://www.tcja.nl/~wilko
 |/|/ / / /( (_) Arnhem, The Netherlands - Do, or do not. There is no 'try'
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