From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 819BBECDE44 for ; Thu, 1 Nov 2018 02:59:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4523E20664 for ; Thu, 1 Nov 2018 02:59:26 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=hansenpartnership.com header.i=@hansenpartnership.com header.b="OKjM1Nij" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4523E20664 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=HansenPartnership.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727679AbeKAMAY (ORCPT ); Thu, 1 Nov 2018 08:00:24 -0400 Received: from bedivere.hansenpartnership.com ([66.63.167.143]:46232 "EHLO bedivere.hansenpartnership.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726227AbeKAMAY (ORCPT ); Thu, 1 Nov 2018 08:00:24 -0400 Received: from localhost (localhost [127.0.0.1]) by bedivere.hansenpartnership.com (Postfix) with ESMTP id 6D66B8EE179; Wed, 31 Oct 2018 19:59:24 -0700 (PDT) Received: from bedivere.hansenpartnership.com ([127.0.0.1]) by localhost (bedivere.hansenpartnership.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Q7Erb9BKTj7Y; Wed, 31 Oct 2018 19:59:24 -0700 (PDT) Received: from [192.168.20.3] (unknown [216.9.105.56]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by bedivere.hansenpartnership.com (Postfix) with ESMTPSA id B0E518EE02B; Wed, 31 Oct 2018 19:59:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=hansenpartnership.com; s=20151216; t=1541041164; bh=LaZ6lE7b1odiMLIIxIprUCRoLPHL+xmLclVvBsLieFw=; h=Subject:From:To:Cc:Date:In-Reply-To:References:From; b=OKjM1Nijq/6G2dx3DZ/L+Ic8C30m2LP5WyB+2oqMD1RQhChkfhWiIPwrXE9VEHJAZ ZksVTsse0+0shC7HY8qFsWnHRlinMBOYp9PME6jpqZs095eEJ1P1CROs1zIV5RVv6q W1H9zpwnVZuDMI0MxvxXFxwz5VCxLi+HTvtI8mXw= Message-ID: <1541041159.4632.6.camel@HansenPartnership.com> Subject: Re: [PATCH v6 0/1] ns: introduce binfmt_misc namespace From: James Bottomley To: Laurent Vivier , linux-kernel@vger.kernel.org Cc: Jann Horn , linux-api@vger.kernel.org, containers@lists.linux-foundation.org, Dmitry Safonov , Alexander Viro , linux-fsdevel@vger.kernel.org, Eric Biederman Date: Wed, 31 Oct 2018 19:59:19 -0700 In-Reply-To: <7ed6f823-547b-922d-59ff-aba9c4c3ab39@vivier.eu> References: <20181010161430.11633-1-laurent@vivier.eu> <7ed6f823-547b-922d-59ff-aba9c4c3ab39@vivier.eu> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.26.6 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2018-10-16 at 11:52 +0200, Laurent Vivier wrote: > Hi, > > Any comment on this last version? > > Any chance to be merged? I've got a use case for this: I went to one of the Graphene talks in Edinburgh and it struck me that we seem to keep reinventing the type of sandboxing that qemu-user already does. However if you want to do an x86 on x86 sandbox, you can't currently use the binfmt_misc mechanism because that has you running *every* binary on the system emulated. Doing it per user namespace fixes this problem and allows us to at least cut down on all the pointless duplication. James