Re: [uml-devel] Trivial Patch - SIGHUP simulates ctrl-alt-del

[Nick 'S. M. <sh...@zo...>]

On Thu, Feb 21, 2002 at 09:58:37AM -0500, Jeff Dike wrote:
> sh...@zo... said:
> > 	If I'm doing this a totally bone-headed way, I'm sure you'll let me
> > know ... hey, I said it was trivial!
> 
> The tracing thread shouldn't call into the kernel like that.  Actual kernel
> threads are the only things that should be running kernel code.

Oh, fair enough. I was hoping the eventual behavior (finding pid 1 and
SIGINTing it) would sort itself out.

I guess a better way would be for the tracing thread to catch SIGHUP,
and to SIGHUP a kernel thread, which would then SIGINT the init thread.
Maybe?

> What's the matter with the mconsole 'cad' command (aside from the fact that
> I think it's not documented anywhere :-)?

Ah, well, mainly that I didn't know it existed. I'd still like to be
able to do it with a signal, just so I can script horrible things like:

ps auxww | grep 'tracing\ thread' | awk '{print $2;}' | xargs kill -HUP

Hopefully something useful should come out of all this mucking around:
I'm setting up IPv6 virtual networks & trying to do simulation and
conformance testing using UML. There's probably a paper in it :-)

-----sharks