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SubjectRe: mlock(1)
* Alan Cox (alan@lxorguk.ukuu.org.uk) wrote:
> On Gwe, 2004-09-24 at 21:22, Chris Wright wrote:
> > Hard to say if it's a policy decision outside the scope of the app.
> > Esp. if the app knows it needs to not be swapped. Either something that
> > has realtime needs, or more specifically, privacy needs. Don't need to
> > mlock all of gpg to ensure key data never hits swap.
>
> Keys are a different case anyway. We can swap them if we have encrypted
> swap (hardware or software) and we could use the crypto lib just to
> crypt some pages in swap although that might be complex. As such a
> MAP_CRYPT seems better than mlock. If we don't have cryptable swap then
> fine its mlock.

Yeah, sounds nice. This is still very much an app specific policy, not
something that a helper such as mlock(1) would solve.

thanks,
-chris
--
Linux Security Modules http://lsm.immunix.org http://lsm.bkbits.net
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