From owner-freebsd-hackers Mon Mar 10 5:24:53 2003 Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 8BE4237B401 for ; Mon, 10 Mar 2003 05:24:51 -0800 (PST) Received: from bart.LF.net (bart.LF.net [212.9.190.51]) by mx1.FreeBSD.org (Postfix) with ESMTP id DDBFD43F85 for ; Mon, 10 Mar 2003 05:24:50 -0800 (PST) (envelope-from ms@bart.LF.net) Received: from ms by bart.LF.net with local (Exim 4.10) id 18sNG6-000OX2-00 for hackers@FreeBSD.org; Mo, 10 Mär 2003 14:24:02 +0100 Date: Mon, 10 Mar 2003 14:24:02 +0100 From: Marc Schoechlin To: hackers@FreeBSD.org Subject: mount_null evil ? Message-ID: <20030310132402.GA93784@LF.net> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit User-Agent: Mutt/1.4i X-Ticket-Action: x X-Ticket-Nr: x Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Hi ! I´m currently developing a jail-management solution - I use a readonly mount_null for central software-management of the jails. The manpage of mount_null says the following: ----- -> man mount_null BUGS THIS FILESYSTEM TYPE IS NOT YET FULLY SUPPORTED (READ: IT DOESN'T WORK) AND USING IT MAY, IN FACT, DESTROY DATA ON YOUR SYSTEM. USE AT YOUR OWN RISK. BEWARE OF DOG. SLIPPERY WHEN WET. This code also needs an owner in order to be less dangerous - serious hackers can apply by sending mail to and announcing their intent to take it over. ----- The manpage was written May 1, 1995 - is using this tool still dangerous ? My experience up to now was very good.... Do you see any security or othe problems in using such a readonly mount_null within a jail ? Regards Marc Schöchlin -- Gruss / Best regards | LF.net GmbH | fon +49 711 90074-413 Marc Schoechlin | Ruppmannstr. 27 | fax +49 711 90074-33 ms@LF.net | D-70565 Stuttgart | http://www.lf.net To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message