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=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS autolearn=ham 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 6930DC43142 for ; Tue, 31 Jul 2018 13:00:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 28761208A4 for ; Tue, 31 Jul 2018 13:00:45 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 28761208A4 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732310AbeGaOk4 (ORCPT ); Tue, 31 Jul 2018 10:40:56 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:55916 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1732080AbeGaOkz (ORCPT ); Tue, 31 Jul 2018 10:40:55 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id E0E8A4021700; Tue, 31 Jul 2018 13:00:41 +0000 (UTC) Received: from warthog.procyon.org.uk (ovpn-120-116.rdu2.redhat.com [10.10.120.116]) by smtp.corp.redhat.com (Postfix) with ESMTP id 6396E2142F20; Tue, 31 Jul 2018 13:00:38 +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: <20180731122801.GA14972@amd> References: <20180731122801.GA14972@amd> <20180730183847.GB5544@bombadil.infradead.org> <20180730194938.GA12962@bombadil.infradead.org> <20180730210209.GY21725@thunk.org> <20180730235849.GA19692@bombadil.infradead.org> <20180731005802.GB21725@thunk.org> <18974.1533031913@warthog.procyon.org.uk> <20180731113422.GA22939@amd> <20180731120752.GA23378@bombadil.infradead.org> To: Pavel Machek Cc: dhowells@redhat.com, Matthew Wilcox , "Theodore Y. Ts'o" , Linus Torvalds , Al Viro , linux-fsdevel , Linux Kernel Mailing List Subject: Re: [PATCH 36/38] vfs: Add a sample program for the new mount API [ver #10] MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <4950.1533042037.1@warthog.procyon.org.uk> Date: Tue, 31 Jul 2018 14:00:37 +0100 Message-ID: <4951.1533042037@warthog.procyon.org.uk> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.6 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.5]); Tue, 31 Jul 2018 13:00:41 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.5]); Tue, 31 Jul 2018 13:00:41 +0000 (UTC) for IP:'10.11.54.6' DOMAIN:'int-mx06.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'dhowells@redhat.com' RCPT:'' Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Pavel Machek wrote: > Regexes do not work in presence of arbitrary strings in the > message. If we had a way to tell start / end of string inserted in the > message, yes, the problem would be solved. You could use quotes around arbitrary insertions, ie. you always do '%s' inside the kernel if %s doesn't correspond to a specific set of text constants. David