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=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS autolearn=unavailable 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 51067C43381 for ; Tue, 19 Feb 2019 23:24:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 21FF121736 for ; Tue, 19 Feb 2019 23:24:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729770AbfBSXY1 (ORCPT ); Tue, 19 Feb 2019 18:24:27 -0500 Received: from mx1.redhat.com ([209.132.183.28]:41324 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727736AbfBSXY1 (ORCPT ); Tue, 19 Feb 2019 18:24:27 -0500 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 1B51E1E306; Tue, 19 Feb 2019 23:24:27 +0000 (UTC) Received: from warthog.procyon.org.uk (ovpn-121-129.rdu2.redhat.com [10.10.121.129]) by smtp.corp.redhat.com (Postfix) with ESMTP id 2F8951710E; Tue, 19 Feb 2019 23:24:22 +0000 (UTC) Organization: Red Hat UK Ltd. Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SI4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 3798903 From: David Howells In-Reply-To: <8736ojwwuq.fsf@xmission.com> References: <8736ojwwuq.fsf@xmission.com> <155024683432.21651.14153938339749694146.stgit@warthog.procyon.org.uk> <155024688620.21651.16013251077091180213.stgit@warthog.procyon.org.uk> To: ebiederm@xmission.com (Eric W. Biederman) Cc: dhowells@redhat.com, keyrings@vger.kernel.org, trond.myklebust@hammerspace.com, sfrench@samba.org, linux-security-module@vger.kernel.org, linux-nfs@vger.kernel.org, linux-cifs@vger.kernel.org, linux-fsdevel@vger.kernel.org, rgb@redhat.com, linux-kernel@vger.kernel.org Subject: Re: [RFC PATCH 06/27] containers, vfs: Allow syscall dirfd arguments to take a container fd MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <20783.1550618661.1@warthog.procyon.org.uk> Date: Tue, 19 Feb 2019 23:24:21 +0000 Message-ID: <20784.1550618661@warthog.procyon.org.uk> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.30]); Tue, 19 Feb 2019 23:24:27 +0000 (UTC) Sender: linux-nfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org Eric W. Biederman wrote: > In fact if you take care to use a path that starts with '/' the normal > dirfd based operations work just fine. If the path starts with '/', dirfd is ignored. And there's an error in my patch description - it should be: mkdirat(cfd, "fred", 0755); David