From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1426254AbdEAExK (ORCPT ); Mon, 1 May 2017 00:53:10 -0400 Received: from mail.kernel.org ([198.145.29.136]:48632 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1425659AbdEAExD (ORCPT ); Mon, 1 May 2017 00:53:03 -0400 MIME-Version: 1.0 In-Reply-To: <20170430161040.GW29622@ZenIV.linux.org.uk> References: <20170429220414.GT29622@ZenIV.linux.org.uk> <20170429232504.GU29622@ZenIV.linux.org.uk> <20170430043822.GE27790@bombadil.infradead.org> <20170430161040.GW29622@ZenIV.linux.org.uk> From: Andy Lutomirski Date: Sun, 30 Apr 2017 21:52:37 -0700 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: new ...at() flag: AT_NO_JUMPS To: Al Viro Cc: Matthew Wilcox , Andy Lutomirski , Linux API , "linux-kernel@vger.kernel.org" , Linux FS Devel Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Apr 30, 2017 at 9:10 AM, Al Viro wrote: > On Sat, Apr 29, 2017 at 09:38:22PM -0700, Matthew Wilcox wrote: > >> It sounds more like AT_NO_ESCAPE ... or AT_BELOW, or something. > > I considered AT_ROACH_MOTEL at one point... Another interesting > question is whether EXDEV would've been better than ELOOP. > Opinions? In support of my homeland, I propose AT_HOTEL_CALIFORNIA. How about EXDEV for crossing a mountpoint and ELOOP for absolute symlinks or invalid ..? (Is there a technical reason why the same AT_ flag should trigger both cases?) --Andy