From owner-freebsd-current Sat Feb 3 9:54:42 2001 Delivered-To: freebsd-current@freebsd.org Received: from critter.freebsd.dk (flutter.freebsd.dk [212.242.40.147]) by hub.freebsd.org (Postfix) with ESMTP id 7AD2237B4EC for ; Sat, 3 Feb 2001 09:54:24 -0800 (PST) Received: from critter (localhost [127.0.0.1]) by critter.freebsd.dk (8.11.1/8.11.1) with ESMTP id f13Hs5B14531; Sat, 3 Feb 2001 18:54:05 +0100 (CET) (envelope-from phk@critter.freebsd.dk) To: Peter Wemm Cc: Warner Losh , Jordan Hubbard , John Indra , freebsd-current@FreeBSD.ORG Subject: Re: DEVFS newbie... In-Reply-To: Your message of "Sat, 03 Feb 2001 09:48:56 PST." <200102031748.f13HmuW44694@mobile.wemm.org> Date: Sat, 03 Feb 2001 18:54:05 +0100 Message-ID: <14529.981222845@critter> From: Poul-Henning Kamp Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG >> I have seriously been thinking about some way to say something like >> mount -t devfs -o jailset /home/jail/dev >> but an elegant implementation evades me at this moment. > >As bizzare as it sounds, I like Julian's hack for populating this stuff... >ie: use a hard link to propagate nodes to the jailed /dev. > >eg: mount -t devfs -o empty /home/jail/dev >ln /dev/null /home/jail/dev/null >ln /dev/zero /home/jail/dev/zero >... >mount -u -o ro /home/jail/dev > >It solves several problems, but is kinda odd as it involves a >cross-filesystem hard link. unwhiteout(2) has more promise I think. -- 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. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message