From patchwork Fri Oct 23 16:58:07 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Dr. David Alan Gilbert" X-Patchwork-Id: 302126 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=-3.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,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 2E4FCC4363A for ; Fri, 23 Oct 2020 17:00:32 +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 682CC206BE for ; Fri, 23 Oct 2020 17:00:31 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="P0eyCehn" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 682CC206BE 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]:53850 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kW0QY-0002ju-BP for qemu-devel@archiver.kernel.org; Fri, 23 Oct 2020 13:00:30 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:56018) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kW0Oi-0001Jz-QI for qemu-devel@nongnu.org; Fri, 23 Oct 2020 12:58:40 -0400 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:28784) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kW0Oc-000593-7f for qemu-devel@nongnu.org; Fri, 23 Oct 2020 12:58:36 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1603472308; 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; bh=cGyI6PbBRT2ZfE6lx2tGkJ3McXuK4YC1ogOvDjk1Sp8=; b=P0eyCehnZONE+Yf6pW1N21Ky87Ld8mLnqXBM0S0oGSeYvXHkRJu1Dnw651iq10GOiIW5s1 M/D8bsdhLkNnImRLID8EDA0i8LvFx2QOuOlratIHI9SRCc4q+kKkW8+mKe6vHXJE/FvLFZ tykrQkAsc1L/dA2HGMtUWVC1bGR/sw8= 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-166-hssiraGuO-OSjAPw59djyQ-1; Fri, 23 Oct 2020 12:58:26 -0400 X-MC-Unique: hssiraGuO-OSjAPw59djyQ-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 45FC21842167 for ; Fri, 23 Oct 2020 16:58:25 +0000 (UTC) Received: from dgilbert-t580.localhost (ovpn-113-212.ams2.redhat.com [10.36.113.212]) by smtp.corp.redhat.com (Postfix) with ESMTP id 88A9B10027A5; Fri, 23 Oct 2020 16:58:15 +0000 (UTC) From: "Dr. David Alan Gilbert (git)" To: qemu-devel@nongnu.org, stefanha@redhat.com, vgoyal@redhat.com, dinechin@redhat.com, virtio-fs@redhat.com Subject: [PATCH v4 0/5] virtiofsd xattr name mappings Date: Fri, 23 Oct 2020 17:58:07 +0100 Message-Id: <20201023165812.36028-1-dgilbert@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=dgilbert@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=63.128.21.124; envelope-from=dgilbert@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/23 02:46:25 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, 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_H5=0.001, RCVD_IN_MSPIKE_WL=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" This is the 4th cut of an xattr name mapping option for virtiofsd. It allows the user of virtiofsd to define a fairly flexible mapping from the view of the xattr names the host fs has and the ones that the guest sees. The hope is this allows things like: a) Different selinux attributes on host/guest b) separation of trusted. attributes that clash on overlayfs c) support for privileged xattr's in guests running with an unprivileged virtiofsd. There's no apparent standard for this kind of mapping, so I made it flexible by specifying a mapping rule in the option. Prefix's can be added (selectively or globally), xattr's can be dropped in either direction or passed through. v4 cleanups from Stefan and Vivek's reviews Dave Dr. David Alan Gilbert (5): tools/virtiofsd: xattr name mappings: Add option tools/virtiofsd: xattr name mappings: Map client xattr names tools/virtiofsd: xattr name mappings: Map server xattr names tools/virtiofsd: xattr name mapping examples tools/virtiofsd: xattr name mappings: Simple 'map' docs/tools/virtiofsd.rst | 161 +++++++++++ tools/virtiofsd/passthrough_ll.c | 474 ++++++++++++++++++++++++++++++- 2 files changed, 632 insertions(+), 3 deletions(-) Reviewed-by: Stefan Hajnoczi