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=-3.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,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 62A41C433E3 for ; Thu, 27 Aug 2020 14:57:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 37EF52054F for ; Thu, 27 Aug 2020 14:57:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="T8w1TQn8" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727813AbgH0O5m (ORCPT ); Thu, 27 Aug 2020 10:57:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38680 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728865AbgH0M0e (ORCPT ); Thu, 27 Aug 2020 08:26:34 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 199EFC061235 for ; Thu, 27 Aug 2020 05:26:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Transfer-Encoding: Content-Type:MIME-Version:References:Message-ID:Subject:Cc:To:From:Date: Sender:Reply-To:Content-ID:Content-Description; bh=hcl7PSpX8fKFD2jyhzt8CJl3EdD2lukVdJzKdsvQLsg=; b=T8w1TQn8yeQ2DzAajGsJIIusqY WX2M4621uVEVf3Nk7j+EQ4AI2HiFWnuPlY3eGNvVP9UMieabY7plGm6NN/vWnQI0iTarjKLuM3SdX L+qbrCAjvLa3Rf9WB9DeT6FU25/lv6OermhMKpL6jXjMPpHTkSmypYGabp26O3hFz6UawJ1nM38uF pTzpLBk17V1DOoki8S3NNyWTCZQqv5+i/dtVLBJPUa+Bja2f0xd1IUchgghf3aVafDt9xAMTlqNXb Dhlcl+bvciLEFO055DbDOADWGqwYJJ/Vq+eB1VVwMrHLjmddlCODqwbLeDkhXa1tMm2ZpNusU1ZEi rWRX3Wpg==; Received: from willy by casper.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1kBGyZ-00029w-JS; Thu, 27 Aug 2020 12:25:55 +0000 Date: Thu, 27 Aug 2020 13:25:55 +0100 From: Matthew Wilcox To: Christian Schoenebeck Cc: Miklos Szeredi , "Theodore Y. Ts'o" , Frank van der Linden , Dave Chinner , "Dr. David Alan Gilbert" , Greg Kurz , linux-fsdevel@vger.kernel.org, Stefan Hajnoczi , Miklos Szeredi , Vivek Goyal , Giuseppe Scrivano , Daniel J Walsh , Chirantan Ekbote Subject: Re: file forks vs. xattr (was: xattr names for unprivileged stacking?) Message-ID: <20200827122555.GD14765@casper.infradead.org> References: <20200824222924.GF199705@mit.edu> <3918915.AdkhnqkaGN@silver> <1803870.bTIpkxUbEX@silver> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <1803870.bTIpkxUbEX@silver> Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org On Thu, Aug 27, 2020 at 02:02:42PM +0200, Christian Schoenebeck wrote: > What I could imagine as delimiter instead; slash-caret: > > /var/foo.pdf/^/forkname Any ascii character is going to be used in some actual customer workload. I suggest we use a unicode character instead. /var/foo.pdf/💩/badidea