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=-0.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=no 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 510E1C10F00 for ; Fri, 6 Mar 2020 14:49:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2B3AF20848 for ; Fri, 6 Mar 2020 14:49:03 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="Mu8MYU55" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726932AbgCFOtC (ORCPT ); Fri, 6 Mar 2020 09:49:02 -0500 Received: from us-smtp-delivery-1.mimecast.com ([207.211.31.120]:34668 "EHLO us-smtp-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726300AbgCFOtB (ORCPT ); Fri, 6 Mar 2020 09:49:01 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1583506140; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=KPKncNxD+H6FSBEIxsKO9EUaXIxD1slAskRHA95lWGQ=; b=Mu8MYU556M07CYCiNkvkhDb2LKFSadEjA5H7Dc5pgM81Xmkn71zw90js2CWDtgZlzgvQS2 HMmFku12Kvxk57V/eiCUa/ldDLe51+1wOGG+z7VTDsYFGiclqN649fwrOGMmI8Grgv8ijb Zgf6Jj2bmI551yFTXojzurjCplhkHcs= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-203-QSXU0n8gM-6CEnr1OE_cyg-1; Fri, 06 Mar 2020 09:48:57 -0500 X-MC-Unique: QSXU0n8gM-6CEnr1OE_cyg-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 383AD1034B20; Fri, 6 Mar 2020 14:48:53 +0000 (UTC) Received: from warthog.procyon.org.uk (ovpn-120-182.rdu2.redhat.com [10.10.120.182]) by smtp.corp.redhat.com (Postfix) with ESMTP id 78B788D57C; Fri, 6 Mar 2020 14:48:51 +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: <20200306140032.tpwfytofaeuazalo@yavin> References: <20200306140032.tpwfytofaeuazalo@yavin> <20200302152458.hznqqssixhlpykgr@yavin> <20200302143546.srzk3rnh4o6s76a7@wittgenstein> <20200302115239.pcxvej3szmricxzu@wittgenstein> <96563.1582901612@warthog.procyon.org.uk> <20200228152427.rv3crd7akwdhta2r@wittgenstein> <87h7z7ngd4.fsf@oldenburg2.str.redhat.com> <848282.1583159228@warthog.procyon.org.uk> <888183.1583160603@warthog.procyon.org.uk> <20200302150528.okjdx2mkluicje4w@wittgenstein> <932113.1583167065@warthog.procyon.org.uk> To: Aleksa Sarai Cc: dhowells@redhat.com, Christian Brauner , Florian Weimer , linux-api@vger.kernel.org, viro@zeniv.linux.org.uk, metze@samba.org, torvalds@linux-foundation.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: Have RESOLVE_* flags superseded AT_* flags for new syscalls? MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <4041048.1583506130.1@warthog.procyon.org.uk> Date: Fri, 06 Mar 2020 14:48:50 +0000 Message-ID: <4041049.1583506130@warthog.procyon.org.uk> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Aleksa Sarai wrote: > Right, but open_tree() doesn't need RESOLVE_ flags (nor can you add them > without an open_tree2()). Instead you can pass an O_PATH file descriptor > with AT_EMPTY_PATH which you could've safely resolved with openat2(). Note that openat2() is not a substitute for open_tree(). See the effect of the OPEN_TREE_CLONE flag. David