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=-10.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,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 98670C433E1 for ; Thu, 27 Aug 2020 15:40:13 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 51A3B22B4D for ; Thu, 27 Aug 2020 15:40:13 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="Itbx5pf5" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 51A3B22B4D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:52410 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kBK0a-0002Ot-Dc for qemu-devel@archiver.kernel.org; Thu, 27 Aug 2020 11:40:12 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:55790) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kBJy2-00076F-3b for qemu-devel@nongnu.org; Thu, 27 Aug 2020 11:37:34 -0400 Received: from us-smtp-delivery-1.mimecast.com ([207.211.31.120]:52988 helo=us-smtp-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kBJy0-00086R-DZ for qemu-devel@nongnu.org; Thu, 27 Aug 2020 11:37:33 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1598542650; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=2QYq4Wy4BL95yd485TZY7hK9rTHHXrGNPSze6UgH9cw=; b=Itbx5pf5r9WrN/M2PT80eaWKnJMWrYOfvnZSAxY3Y3IdqGeTcbhqsCke5qK1AyeCDCkriJ WbK/6wZcfGJgfGALfuHUpvXGrMCRV3k645/AHHLAWF7mezi329RW8PFaHRsSAjPSAuo0D1 4VDPwVx7ADWtWvQnmqnNxm6cp+iifYk= 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-387-xffI8G3hNNGY2OLdFPJLQw-1; Thu, 27 Aug 2020 11:37:28 -0400 X-MC-Unique: xffI8G3hNNGY2OLdFPJLQw-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 964A6185FD81 for ; Thu, 27 Aug 2020 15:37:27 +0000 (UTC) Received: from dgilbert-t580.localhost (ovpn-114-163.ams2.redhat.com [10.36.114.163]) by smtp.corp.redhat.com (Postfix) with ESMTP id 913FF5D9E8; Thu, 27 Aug 2020 15:37:26 +0000 (UTC) From: "Dr. David Alan Gilbert (git)" To: qemu-devel@nongnu.org, vgoyal@redhat.com, stefanha@redhat.com, virtio-fs@redhat.com Subject: [PATCH v2 6/6] tools/virtiofsd: xattr name mapping examples Date: Thu, 27 Aug 2020 16:36:57 +0100 Message-Id: <20200827153657.111098-7-dgilbert@redhat.com> In-Reply-To: <20200827153657.111098-1-dgilbert@redhat.com> References: <20200827153657.111098-1-dgilbert@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=dgilbert@redhat.com X-Mimecast-Spam-Score: 0.0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=207.211.31.120; envelope-from=dgilbert@redhat.com; helo=us-smtp-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/08/27 02:56:52 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -30 X-Spam_score: -3.1 X-Spam_bar: --- X-Spam_report: (-3.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.959, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: "Dr. David Alan Gilbert" Add a few examples of xattrmaps to the documentation. Signed-off-by: Dr. David Alan Gilbert --- docs/tools/virtiofsd.rst | 49 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) diff --git a/docs/tools/virtiofsd.rst b/docs/tools/virtiofsd.rst index 2efa16d3c5..a138549862 100644 --- a/docs/tools/virtiofsd.rst +++ b/docs/tools/virtiofsd.rst @@ -161,6 +161,55 @@ in which case a 'server' rule will always match on all names from the server. +xattr-mapping Examples +---------------------- + +1) Prefix all attributes with 'user.virtiofs.' + +:: + +-o xattrmap=":all:prefix::user.virtiofs.::all:bad:::" + + +This uses two rules, using : as the field separator; +the first rule prefixes and strips 'user.virtiofs.', +the second rule hides any non-prefixed attributes that +the host set. + +2) Prefix 'trusted.' attributes, allow others through + +:: + + "/all/prefix/trusted./user.virtiofs./ + /server/bad//trusted./ + /client/bad/user.virtiofs.trusted.// + /all/ok///" + + +Here there are four rules, using / as the field +separator, and also demonstrating that new lines can +be included between rules. +The first rule is the prefixing of 'trusted.'. +The second rule hides unprefixed 'trusted.' attributes +on the host. +The third rule stops a guest from explicitily setting +the 'user.viritofs.trusted.' path directly. +Finally, the fourth rule lets all remaining attributes +through. + +3) Hide 'security.' attributes, and allow everything else + +:: + + "/all/bad/security./security./ + /all/ok///' + +The first rule combines what could be separate client and server +rules into a single 'all' rule, matching 'security.' in either +client arguments or lists returned from the host. This stops +the client seeing any 'security.' attributes on the server and +stops it setting any. + Examples -------- -- 2.26.2