From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sasha Levin Subject: Re: [PATCH 2/2] kvm tools: Use host's resolv.conf within the guest Date: Thu, 15 Sep 2011 10:11:54 +0300 Message-ID: <1316070714.3743.9.camel@lappy> References: <1316017706-12348-1-git-send-email-levinsasha928@gmail.com> <1316017706-12348-2-git-send-email-levinsasha928@gmail.com> <1316065006.3743.0.camel@lappy> <4E7190B4.1060306@cs.helsinki.fi> <1316066419.3743.5.camel@lappy> <1316066656.3743.6.camel@lappy> <4E7199C0.4000701@cs.helsinki.fi> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: kvm@vger.kernel.org, mingo@elte.hu, asias.hejun@gmail.com, gorcunov@gmail.com To: Pekka Enberg Return-path: Received: from mail-fx0-f46.google.com ([209.85.161.46]:55894 "EHLO mail-fx0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750788Ab1IOHM0 (ORCPT ); Thu, 15 Sep 2011 03:12:26 -0400 Received: by fxe4 with SMTP id 4so349356fxe.19 for ; Thu, 15 Sep 2011 00:12:25 -0700 (PDT) In-Reply-To: <4E7199C0.4000701@cs.helsinki.fi> Sender: kvm-owner@vger.kernel.org List-ID: On Thu, 2011-09-15 at 09:22 +0300, Pekka Enberg wrote: > On 9/15/11 9:04 AM, Sasha Levin wrote: > > On Thu, 2011-09-15 at 09:04 +0300, Pekka Enberg wrote: > >> On Thu, Sep 15, 2011 at 9:00 AM, Sasha Levin wrote: > >>> Hm? If you it to the host's resolv.conf, a guest can edit host's file, > >>> no? > >>> > >>> Might even be not on purpose... For example, simply running dhcpcd on > >>> the guest. > >> > >> How is that going to happen if you're not running kvmtool as root? > > > > In that case, dhcpcd in the guest will simply break because it can't > > modify resolv.conf, no? > > Yes. Why is that a problem? You're not supposed to launch a dhcp client > when using shared rootfs because kvmtool takes care of that for you. Why? Testing a brand new dhcp client for example :) We can't block the user from editing guest configuration files... -- Sasha.