Andreas Klemm wrote:
> On Fri, Oct 02, 1998 at 12:22:18AM -0600, Kenneth D. Merry wrote:
> > How about this -- make them sysctl variables and kernel options, like the
> > CD changer timeouts in the CAM CD driver. So, you can tweak the timeouts
> > while the system is running, and then once you've got them the way you want
> > them, you can put them in your kernel config file.
> That's of course the best solution for best functionality ;-)
I sometimes wonder about things like dset(8). I'd love to be able to tag
certain sysctl variables as 'should be persistant' or something, and a
command to sync those variables with the corresponding kernel image. This
would be handy for changing defaults on a GENERIC kernel like many people
Hmm.. Perhaps 'sysctl -W foo.bar=10' might be a way to request
persistance. Implementing it would be hell though, but for INT variables
at least it should just be a matter of grubbing around inside /dev/kmem
(or some option to sysctl itself to tell us the kva of the backing
variable) and then stow that away in the booted kernel image (if
permitted). And it would only work for varaiables in the data segment
rather than bss or initialized-to-zero.
Argh.. On second thoughts maybe I'll just shutup.