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To: Werner Almesberger <wa@almesberger.net>
Cc: Alexander Viro <viro@math.psu.edu>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [lkcd-devel] Re: What's left over.
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From: ebiederm@xmission.com (Eric W. Biederman)
Date: 06 Nov 2002 23:04:48 -0700
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Werner Almesberger <wa@almesberger.net> writes:

> Alexander Viro wrote:
> > That's not obvious.  By the same logics, we would need syscalls for
> > turning off overcommit, etc., etc.
> 
> Okay okay, add file system specific ioctls and sysctl to my list
> of alternative mechanisms :-)
> 
> > FWIW, I suspect that
> > 	open("/proc/image", O_EXCL|O_WRONLY);
> > 	bunch of lseek()/write()
> > 	close()
> 
> Hmm, interesting. Yes, that should work. One would of course have
> to retain the current interface for in-kernel use (e.g. MCORE), but
> that's probably okay. Let's see what Eric thinks about it - it's
> his code after all.

For the record my opinion is there is extra code bloat but it is ok
if it is built as kexecfs.  Any other way of getting a magic file
to work with seems currently insane.

Eric
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