From patchwork Thu Dec 19 10:55:28 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Aleksa Sarai X-Patchwork-Id: 11303263 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 8F82813A4 for ; Thu, 19 Dec 2019 10:56:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7592124672 for ; Thu, 19 Dec 2019 10:56:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726708AbfLSK4U (ORCPT ); Thu, 19 Dec 2019 05:56:20 -0500 Received: from mout-p-102.mailbox.org ([80.241.56.152]:12528 "EHLO mout-p-102.mailbox.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726633AbfLSK4U (ORCPT ); Thu, 19 Dec 2019 05:56:20 -0500 Received: from smtp1.mailbox.org (smtp1.mailbox.org [IPv6:2001:67c:2050:105:465:1:1:0]) (using TLSv1.2 with cipher ECDHE-RSA-CHACHA20-POLY1305 (256/256 bits)) (No client certificate requested) by mout-p-102.mailbox.org (Postfix) with ESMTPS id 47dphf2kC2zKmj1; Thu, 19 Dec 2019 11:56:18 +0100 (CET) X-Virus-Scanned: amavisd-new at heinlein-support.de Received: from smtp1.mailbox.org ([80.241.60.240]) by spamfilter05.heinlein-hosting.de (spamfilter05.heinlein-hosting.de [80.241.56.123]) (amavisd-new, port 10030) with ESMTP id iQ2uzmv5ZKGl; Thu, 19 Dec 2019 11:56:14 +0100 (CET) From: Aleksa Sarai To: Alexander Viro , Jeff Layton , "J. Bruce Fields" , Shuah Khan Cc: Aleksa Sarai , Florian Weimer , David Laight , Christian Brauner , dev@opencontainers.org, containers@lists.linux-foundation.org, libc-alpha@sourceware.org, linux-api@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org Subject: [PATCH 0/2] openat2: minor uapi cleanups Date: Thu, 19 Dec 2019 21:55:28 +1100 Message-Id: <20191219105533.12508-1-cyphar@cyphar.com> MIME-Version: 1.0 Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org While openat2(2) is still not yet in Linus's tree, we can take this opportunity to iron out some small warts that weren't noticed earlier: * A fix was suggested by Florian Weimer, to separate the openat2 definitions so glibc can use the header directly. I've put the maintainership under VFS but let me know if you'd prefer it belong ot the fcntl folks. * Having heterogenous field sizes in an extensible struct results in "padding hole" problems when adding new fields (in addition the correct error to use for non-zero padding isn't entirely clear ). The simplest solution is to just copy clone(3)'s model -- always use u64s. It will waste a little more space in the struct, but it removes a possible future headache. Aleksa Sarai (2): uapi: split openat2(2) definitions from fcntl.h openat2: drop open_how->__padding field MAINTAINERS | 1 + fs/open.c | 2 - include/uapi/linux/fcntl.h | 37 +---------------- include/uapi/linux/openat2.h | 40 +++++++++++++++++++ tools/testing/selftests/openat2/helpers.h | 3 +- .../testing/selftests/openat2/openat2_test.c | 24 ++++------- 6 files changed, 51 insertions(+), 56 deletions(-) create mode 100644 include/uapi/linux/openat2.h base-commit: 912dfe068c43fa13c587b8d30e73d335c5ba7d44