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=-3.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SIGNED_OFF_BY,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 72F43C33CB1 for ; Thu, 16 Jan 2020 14:36:18 +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 3CFBE206D5 for ; Thu, 16 Jan 2020 14:36:18 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="HYnazV6g" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3CFBE206D5 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]:43098 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1is6Ft-0007U1-DO for qemu-devel@archiver.kernel.org; Thu, 16 Jan 2020 09:36:17 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:53014) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1is6Ez-0006or-ML for qemu-devel@nongnu.org; Thu, 16 Jan 2020 09:35:25 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1is6Ev-0001x6-Rn for qemu-devel@nongnu.org; Thu, 16 Jan 2020 09:35:21 -0500 Received: from us-smtp-delivery-1.mimecast.com ([205.139.110.120]:20357 helo=us-smtp-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1is6Ev-0001wY-Nf for qemu-devel@nongnu.org; Thu, 16 Jan 2020 09:35:17 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1579185317; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=BCUO7kz03mNbQP5hTOasv/LzZOKf/dKpOhL/3eo/ptg=; b=HYnazV6gtK8434bn9H9X0iv/osOtZZ5ZmlKg7Uo+NLI2mgZM+RpoFPy87ZMmLF1o7CgGBI BXI+VkRUP6eEvILINdnfPDF4c5FDGtTox9kIH0S7iIjZSQTCMHJ1iZomUxe1mhDeEHbdUh qs/E5CiMkdUKTUPPVv3KcS5+wz4jXck= 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-98-TGE1hDYUOJmXNNwJ--01hw-1; Thu, 16 Jan 2020 09:35:15 -0500 X-MC-Unique: TGE1hDYUOJmXNNwJ--01hw-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 2C53D10B0F32 for ; Thu, 16 Jan 2020 14:35:14 +0000 (UTC) Received: from dritchie.redhat.com (unknown [10.33.36.19]) by smtp.corp.redhat.com (Postfix) with ESMTPS id C6D3E61073; Thu, 16 Jan 2020 14:35:12 +0000 (UTC) References: <20191212163904.159893-1-dgilbert@redhat.com> <20191212163904.159893-46-dgilbert@redhat.com> User-agent: mu4e 1.2.0; emacs 26.3 From: Sergio Lopez To: qemu-devel@nongnu.org Subject: Re: [PATCH 045/104] virtiofsd: prevent ".." escape in lo_do_readdir() Message-ID: <87r1zzwjua.fsf@redhat.com> In-reply-to: <20191212163904.159893-46-dgilbert@redhat.com> Date: Thu, 16 Jan 2020 15:35:10 +0100 MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha256; protocol="application/pgp-signature" X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 205.139.110.120 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: , Cc: "Dr. David Alan Gilbert \(git\)" , stefanha@redhat.com, vgoyal@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" --=-=-= Content-Type: text/plain Dr. David Alan Gilbert (git) writes: > From: Stefan Hajnoczi > > Construct a fake dirent for the root directory's ".." entry. This hides > the parent directory from the FUSE client. > > Signed-off-by: Stefan Hajnoczi > --- > tools/virtiofsd/passthrough_ll.c | 36 +++++++++++++++++++------------- > 1 file changed, 22 insertions(+), 14 deletions(-) Reviewed-by: Sergio Lopez --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEEvtX891EthoCRQuii9GknjS8MAjUFAl4gdJ4ACgkQ9GknjS8M AjWy0A/+IJzERmeIy07eUBC1F8qZy2GVFx02HP3fvCHAgO5ihAdHOz6WL4uJ87Xz KETknUuXBlLWG6c8RXzhGgCtJpZOjLuEyf6F8plhHuwTUdmcRFiRO+D87dkrd8lb C4v8X9lKYFRAzSjh6LAcxBGeVZToX3ne1UQ3YzBj7qA7xAr54PxtnR9+pMiiFXqF SrkIW1Y38PQF4mOuFpSXQ0DDVvm0MUAprLCXH9whSEklu4Ez38yNLwAOJCENEyBn frZ/9ED6JH08RMavryq+s51isjaNv4DHqOWOVBhLHFmagaPOkkuMeHAkmRkowqqd f9DuWe92a9PhTw/6bUEzbEPKvAo6To0f4iftzZLtuqj5LZxb/SkFFQ8cyR28if6P Su/471DiqLFoGVxEt6LCSjdwuTLFYGsYaqEt1G+SFu3HykLd+vV59Secr0ljPq0A qUclMLt0uoKVMfTSUlsrsWOi2CqPM8Zp9/QOdwlowKNjtKn8JBc9UbZtSUFY42TL 7sJrxekJu/0J1xG7zO9IpsguUGZFr2ALPfTdcqucU/2kfvbX+0C75OejhoCF2yvs zPpVDIjnc8USUKDS2TkG7IoANL7Ct9ekOAnFa5Xo7LY6K86uHu9wBeOFi9MmNn9R uWdbaDNAM6nC7l5FDxEGTW2vRDuj9KrFAJ1Dp5WYG4anujFHm6M= =NXAe -----END PGP SIGNATURE----- --=-=-=--