From owner-freebsd-current@FreeBSD.ORG Tue Jul 24 14:46:33 2007 Return-Path: Delivered-To: freebsd-current@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 19DE916A419 for ; Tue, 24 Jul 2007 14:46:33 +0000 (UTC) (envelope-from pjd@garage.freebsd.pl) Received: from mail.garage.freebsd.pl (arm132.internetdsl.tpnet.pl [83.17.198.132]) by mx1.freebsd.org (Postfix) with ESMTP id AE56813C45A for ; Tue, 24 Jul 2007 14:46:29 +0000 (UTC) (envelope-from pjd@garage.freebsd.pl) Received: by mail.garage.freebsd.pl (Postfix, from userid 65534) id B296F487F4; Tue, 24 Jul 2007 16:46:27 +0200 (CEST) Received: from localhost (154.81.datacomsa.pl [195.34.81.154]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.garage.freebsd.pl (Postfix) with ESMTP id 8E59345683; Tue, 24 Jul 2007 16:46:21 +0200 (CEST) Date: Tue, 24 Jul 2007 16:45:49 +0200 From: Pawel Jakub Dawidek To: Boris Samorodov Message-ID: <20070724144549.GA12473@garage.freebsd.pl> References: <97732929@srv.sem.ipt.ru> <20070723133333.GF5456@garage.freebsd.pl> <78011660@srv.sem.ipt.ru> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="UugvWAfsgieZRqgk" Content-Disposition: inline In-Reply-To: <78011660@srv.sem.ipt.ru> User-Agent: Mutt/1.4.2.3i X-PGP-Key-URL: http://people.freebsd.org/~pjd/pjd.asc X-OS: FreeBSD 7.0-CURRENT i386 X-Spam-Checker-Version: SpamAssassin 3.0.4 (2005-06-05) on mail.garage.freebsd.pl X-Spam-Level: X-Spam-Status: No, score=-2.6 required=3.0 tests=BAYES_00 autolearn=ham version=3.0.4 Cc: freebsd-current@FreeBSD.org Subject: Re: mount_nullfs inside a jail X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 24 Jul 2007 14:46:33 -0000 --UugvWAfsgieZRqgk Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Jul 24, 2007 at 06:03:47PM +0400, Boris Samorodov wrote: > On Mon, 23 Jul 2007 15:33:33 +0200 Pawel Jakub Dawidek wrote: > > As you can see, nullfs doesn't have 'jail' flag. The only jail-friendly > > file system currently is ZFS. Nullfs is a good candidate for a > > jail-friendly file system, but is not marked as such yet. >=20 > Does somebody know if only a flag is missing or not? You may try changing the line in /sys/fs/nullfs/null_vfsops.c from: VFS_SET(null_vfsops, nullfs, VFCF_LOOPBACK); to: VFS_SET(null_vfsops, nullfs, VFCF_LOOPBACK | VFCF_JAIL); but I don't think anyone did any security analysis of this yet. --=20 Pawel Jakub Dawidek http://www.wheel.pl pjd@FreeBSD.org http://www.FreeBSD.org FreeBSD committer Am I Evil? Yes, I Am! --UugvWAfsgieZRqgk Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.4 (FreeBSD) iD8DBQFGphCdForvXbEpPzQRAqw1AJ0Q6YoZ+ZKjfBvMTUSmncoCb2l9wACeL6sa VI3bbB7KqIrfICYfl3gfO2M= =+oDv -----END PGP SIGNATURE----- --UugvWAfsgieZRqgk--