* David Higgs  [2008-06-15 01:59]:

quoted text
> On Sat, Jun 14, 2008 at 1:11 PM, Henning Brauer  wrote:

> > * Toni Mueller  [2008-06-14 11:29]:

> >> Would it be possible to walk along the live table, without copying the

> >> table, or would the continuous stream of route inserts and deletes lead

> >> to a corrupted view and/or access to the wrong parts of the system's

> >> memory (which must to be prevented), or would this be such a

> >> performance hit that this is unfeasible?

> >

> > userland can walk a kernel table since when exactly?

> > (leave dirty /dev/mem style hacks aside)

>

> If the kernel table is kept in an ordered state, userland could

> provide a "starting value" or key.  The kernel can then return the

> requested chunk (up to the size requested) starting at the "next"

> table item that comes after the key.

wow. you completely miss the point.

userland cannot poke in kernel memory.

(footnote: ok, it can, but assuming it can't is better)
--

Henning Brauer, hb@bsws.de, henning@openbsd.org

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