Forcefully unmounting devfs...

[Kris Kennaway]

On Wed, Dec 22, 2004 at 12:25:35AM +0100, Poul-Henning Kamp wrote:
> In message <20041221232354.GA28374 at xor.obsecurity.org>, Kris Kennaway writes:
> >
> >--W/nzBZO5zC0uMSeA
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> >On Tue, Dec 21, 2004 at 02:32:34PM -0700, Scott Long wrote:
> >
> >> >Either disable forceful unmount of devfs, which makes sense from
> >> >KISS and many other principles, and then jail wardens will have to
> >> >find other ways to clean up their jails
> >
> >> >The more I think about it, the more I lean towards the first option.
> >> >
> >>=20
> >> I think that I'd agree here from the point of view of finding an=20
> >> expedient way to keep from shooting off feet.
> >
> >Unfortunately that's going to cause me a fair amount of pain, unless
> >there's a simple way to kill all processes running in a given chroot
> >(NB: I don't currently use jails because a number of ports won't build
> >in a jail) so I can free up the devfs and then unmount it.
> 
> But unmounting it forcefully is not guaranteed to clean up your
> chroot today...

Well, at least the filesystem presence disappears so I can reuse the
mountpoint.

Kris
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