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From: J Wunsch <j@jette.heep.sax.de>
Message-Id: <199504232205.AAA02644@jette.heep.sax.de>
Subject: Re: How do I set a kernel variable?
To: hackers@FreeBSD.org
Date: Mon, 24 Apr 1995 00:05:17 +0200 (MET DST)
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In-Reply-To: <m0s36Zj-0005PMC@rks32.pcs.dec.com> from "gj%pcs.dec.com@inet-gw-1.pa.dec.com" at Apr 23, 95 06:40:06 pm
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> 
> It turns out that it _is_ possible to set a variable, but there's a trick
> to it.
[Evil trickery deleted]
> 
> If you try to just do the following:
> 
> gdb -k
> set write
> exec-file /kernel
> 
> you'll get an error, because gdb tries to open /kernel for writing, which
> (for some reason) fails miserably.

/kernel installed by ``make install''?  I think it will have the
immutable flag set then.
> 
> Maybe we should have a "-w" flag to specify opening the core-file for
> writing ? Any opinions ?

After reading your description, just this question came to mind.  If
nobody objects: go for it.
> 
> Could you add this tip to the kernel-debug.FAQ, J"org ?

Once my CVS is back, yes.  Otherwise: you've got commit privs, too.
Your english is (hopefully :) better than mine -- so you can also do
it yourself.

I don't mind doing it however.  Will keep you message in my growing
work queue, as a reminder.

Jörg