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On Thu, 27 Apr 2006 10:05:28 +0300, Alan Barrett <apb@cequrux.com> wrote:

> On Wed, 26 Apr 2006, Bill Studenmund wrote:
> > [This thread] was about making it easier to find the booted kernel.
> 
> There's already an easy way to find the booted kernel: $(sysctl
> machdep.booted_kernel).  I suppose that's not easy enough for some people,
> and I can see the attraction of a fixed name that would just DTRT when
> used as an arg to open(3).
> 
> I see two obvious ways of allowing a fixed file name to DTRT: a magic
> symlink, or a magic kernfs node.  I think I'd prefer a kernfs node,
> like /kern/kernel, and it has the advantage that it would be possible
> (in principle) to make it work in some situations where a magic symlink
> would not work.
> 
Here's a quick-and-dirty hack, very lightly tested.  There's deliberately
no stop routine to delete the symlink, and it runs before savecore; the
idea is that if the system crashed, you can save the failed kernel....



		--Steven M. Bellovin, http://www.cs.columbia.edu/~smb

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