Hi list, On Thu, Sep 21, 2006 at 09:31:10PM +0200, Jeremie Le Hen wrote: > Hi list, > > please Cc: me in your replies, I am not subscribed to this list. > > I have a jail in which named(8) runs. In order to make a possible bug > exploitation still more difficult, I would like to use the named_chrootdir > variable for rc.conf(5). > > Unfortunately, rc.d/named tries to mount devfs in the named_chrootdir, > which is obviously not possible inside a jail. I could hack the jail > startup bit in order to mount devfs in $jaildir/$named_chrootdir/dev, > but I find this a bit overkill and I am looking for a neater way to > achieve this. I thought of using $jail_fstab and $jail_mount_enable > in order to mount_nullfs(8) $jaildir/dev onto $jaildir/$named_chrootdir/dev > but I am not sure this is allowed by the kernel (I'm scared to panic my > production box). > > Any clue, idea ?
For your information, I achieved to run a chrooted named(8) inside a jail with two small patches I submitted in the following PRs: http://www.freebsd.org/cgi/query-pr.cgi?pr=103486 http://www.freebsd.org/cgi/query-pr.cgi?pr=103489 The second PR prevents rc.d/named from doing devfs stuff inside a jail, using the security.jail.jailed sysctl. The first PR makes rc.d/jail mount jail's devfs before jail's fstab. This way, I can use /etc/fstab.<jname> to null-mount $jail_rootdir/dev onto $jail_rootdir/$named_chrootdir/dev. Regards, -- Jeremie Le Hen < jeremie at le-hen dot org >< ttz at chchile dot org > _______________________________________________ firstname.lastname@example.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"