Re: Forcefully unmounting devfs...

From: Kris Kennaway (kris_at_obsecurity.org)
Date: 12/22/04

  • Next message: Robert Watson: "Re: Fixing Posix semaphores" 
    Date: Tue, 21 Dec 2004 15:34:41 -0800
To: Poul-Henning Kamp <phk@phk.freebsd.dk>

    On Wed, Dec 22, 2004 at 12:25:35AM +0100, Poul-Henning Kamp wrote:
    > In message <20041221232354.GA28374@xor.obsecurity.org>, Kris Kennaway writes:
    > >
    > >--W/nzBZO5zC0uMSeA
    > >Content-Type: text/plain; charset=us-ascii
    > >Content-Disposition: inline
    > >Content-Transfer-Encoding: quoted-printable
    > >
    > >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

  • Next message: Robert Watson: "Re: Fixing Posix semaphores"

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