*BSD News Article 75687


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From: j@uriah.heep.sax.de (J Wunsch)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: pcvt, XFree, and <Ctrl><Alt><Del>
Date: 7 Aug 1996 22:15:27 GMT
Organization: Private BSD site, Dresden
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Reply-To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch)
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jfh@cise.ufl.edu (James F. Hranicky) wrote:

> Is there any way to enable (<Ctrl><Alt><Del> => reboot) using pcvt? 
> XFree? This worked for syscons, but not for pcvt. It also has never 
> seemed to work with XFree.

pcvt has some rudimentary code that could cause a system reset when
hitting ctrl-alt-del.  It is disabled by default.  Should you wish to
enable it, replace the call to cpu_reset() by a call to
shutdown_nice() -- this will probably make you more happy. ;)

The X server catches all keyboard events, and doesn't interact in any
way with the kernel when seeing ctrl-alt-del.  If you've got the
Xserver sources, you should be able to hook a

	kill(1, SIGINT);

when it detects this key sequence.  Maybe you can also make your
window manager catching this and execute /sbin/shutdown (which is
executable by all members of group operator).

-- 
cheers, J"org

joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)