Re: Forcefully unmounting devfs...

From: Poul-Henning Kamp (phk_at_phk.freebsd.dk)
Date: 12/22/04

  • Next message: Kris Kennaway: "Re: Forcefully unmounting devfs..." 
    To: Kris Kennaway <kris@obsecurity.org>
Date: Wed, 22 Dec 2004 00:25:35 +0100

    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... 

    -- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.
_______________________________________________
freebsd-arch@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-arch
To unsubscribe, send any mail to "freebsd-arch-unsubscribe@freebsd.org"
  • Next message: Kris Kennaway: "Re: Forcefully unmounting devfs..."

    Relevant Pages

    • Re: keeping ooffice in foreground
      ... is there any way how to force ooffice, oocalc, oowriter, ... ... after the chroot is entered. ... directories bindmounted several times and have to unmount them ... To UNSUBSCRIBE, email to debian-user-REQUEST@xxxxxxxxxxxxxxxx ...
      (Debian-User)
    • What are "security implications" of FTP chroot jails?
      ... The vsftpd man page says: ... placed in a chroot() jail in their home directory after login. ... Note that these security implications are not vsftpd specific. ... to all FTP daemons which offer to put local users in chrootjails." ...
      (comp.os.linux.security)
    • Re: DEVFS in a chroot?
      ... We do this on our build box -- mount and unmount both devfs and a read-only ... source directory, chroot, and build, as in: ... And then unmount once the build has completed. ... sure if it's the nullfs or the devfs unmount. ...
      (freebsd-current)
    • Re: chroot ?
      ... I was attempting to make a Debian ISO using someones web HOW-TO, ... # unmount devpts-live ... These are typical psuedo filesystem which you need within chroot. ... To UNSUBSCRIBE, email to debian-user-REQUEST@xxxxxxxxxxxxxxxx ...
      (Debian-User)
    • RE: jails or chroot?
      ... jails require more work regarding administration. ... Objet: Re: jails or chroot? ... apache and their "mass virtual hosting", ... I need a separate apache process for each ...
      (freebsd-questions)