Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751863AbdIAL5H (ORCPT ); Fri, 1 Sep 2017 07:57:07 -0400 Received: from mailhub.sw.ru ([195.214.232.25]:22397 "EHLO relay.sw.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751521AbdIAL5G (ORCPT ); Fri, 1 Sep 2017 07:57:06 -0400 X-Greylist: delayed 2117 seconds by postgrey-1.27 at vger.kernel.org; Fri, 01 Sep 2017 07:57:05 EDT Subject: [RFC PATCH 0/2] autofs: fix autofs_v5_packet dlivery in compat mode From: Stanislav Kinsburskiy To: raven@themaw.net Cc: autofs@vger.kernel.org, linux-kernel@vger.kernel.org, devel@openvz.org, ldv@altlinux.org Date: Fri, 01 Sep 2017 15:21:39 +0400 Message-ID: <20170901110906.2669.1577.stgit@localhost.localdomain> User-Agent: StGit/0.17-dirty MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 744 Lines: 23 The problem is that in compat mode struct autofs_v5_packet has to have different size (i.e. 4 bytes less). This is RFC because: 1) This issue is hidden, because autofs pipe has O_DIRECT and the rest of the epacket is truncated when read. 2) X86 arch doesn't have is_compat_task() helper 3) It's now clear, what to do if "pgrp" option is specified. The following series implements... --- Stanislav Kinsburskiy (2): autofs: set compat flag on sbi when daemon uses 32bit addressation autofs: sent 32-bit sized packet for 32-bit process fs/autofs4/autofs_i.h | 3 +++ fs/autofs4/dev-ioctl.c | 3 +++ fs/autofs4/inode.c | 4 +++- fs/autofs4/waitq.c | 5 +++++ 4 files changed, 14 insertions(+), 1 deletion(-)