Received: by 2002:a05:6358:d09b:b0:dc:cd0c:909e with SMTP id jc27csp6024672rwb; Sun, 11 Dec 2022 17:33:51 -0800 (PST) X-Google-Smtp-Source: AA0mqf4qi9LFIR/mSiGsbmEtIQ6glxci72yXix6CuDl+2/Nr3fb4c0MLpNQrKlmkgmtj6JSOlGmD X-Received: by 2002:a17:902:e8d8:b0:188:d405:63c0 with SMTP id v24-20020a170902e8d800b00188d40563c0mr13985435plg.6.1670808831177; Sun, 11 Dec 2022 17:33:51 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1670808831; cv=none; d=google.com; s=arc-20160816; b=nb18UP97KE+mwUwyag8RlbTJnuej4lE3AwagXvNYiXlfTmiMokBFwqcPN+nhsNeCDY bjBH4ZnPM4w+Eo/Vm3EITce2TqDIndLQCX+3qFinG48pzXhYmKGDUxqXi5zBlo2iHc96 8lKyK56DFo5sYc13fpgxZ4+/jjnESx6a49RGLsPDIO9bsmdRYSXkvhl+PbwFdGa/fDok 6VxE+mRsSUYQD+z5eq7vxjF/gf+TLNOlKTF8gbGiPhyBIhiV1FjsxBhOUs46sUBUAAHy b69dgT7YPGBadXt6zy06abUY8F56ECH32EQ+Sy4OtkuGVL/ebPgQ0snkT+E+ZRkGENmK fl3g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:mime-version:user-agent :content-transfer-encoding:references:in-reply-to:date:cc:to:from :subject:message-id:dkim-signature; bh=xJR2nbIWi2OvOl6AvyZ2UM0XQ9Daq6jNfoBWR6S6JaQ=; b=nJK6edkhO3vITTCVJYii4UqCAe4ADmdyt/m6y1tJ53vFgna60ixSlEqcPdn7wP93mb 1bPg0qoyUv4/kb8eeySyuPYAqPMYCoQcHSj1nW20uI/2urjnBDrnriQb7izmHi8rECPw U9pPmnCGXJ1lDHPne6imQ9peu80g6KdqPWfqc5RG30ipMkU/YoAKYZHGWjAj4qh5UaR2 mF5RsKyIZ1XD58yOAoP3Zx3b95NTNau+Dfy3aikNpmgE28jjbSGS8MGZfsIToIzxzf4G Sd82KtHV6pajnxLO4SyHEYzANECDMRHkVd1M5WR7tiXoJKrES+ypl+RS6CejfFiJeA7o U0tQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@ibm.com header.s=pp1 header.b=ErzKdh9K; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=REJECT sp=NONE dis=NONE) header.from=ibm.com Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id v9-20020a1709029a0900b00189bdfb4710si7603466plp.280.2022.12.11.17.33.41; Sun, 11 Dec 2022 17:33:51 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@ibm.com header.s=pp1 header.b=ErzKdh9K; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=REJECT sp=NONE dis=NONE) header.from=ibm.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230438AbiLLBAZ (ORCPT + 75 others); Sun, 11 Dec 2022 20:00:25 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50036 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229475AbiLLBAY (ORCPT ); Sun, 11 Dec 2022 20:00:24 -0500 Received: from mx0a-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 54E67BC33; Sun, 11 Dec 2022 17:00:23 -0800 (PST) Received: from pps.filterd (m0098420.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 2BBK2Bh3006548; Mon, 12 Dec 2022 00:59:05 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=message-id : subject : from : to : cc : date : in-reply-to : references : content-type : content-transfer-encoding : mime-version; s=pp1; bh=xJR2nbIWi2OvOl6AvyZ2UM0XQ9Daq6jNfoBWR6S6JaQ=; b=ErzKdh9KAZwx7wejt8gD2q0Ma4S2ZRoQBmgb26KOhVqpRSuONMhzKAkAFCCLRdogV40w oXLnXX8kHz3hFgSCN7QYsW3qLKAIGwwOF/XfiiqEslESABxusAmKxJ2LwBvJ0iP+K/9+ iI2ZEsQA01kNATXx7TEY6wcpHl3FpAaO51hboAyJLKpXtxfAYygmBS7UOXy23TVkl/eH Nvsa/TESnyY0ldHZVDM9ohuf1CsEAjo+RcrTXPGmkooO6GTHJVC9T5+S1EWMwiEkuqaT GKoY/bw8HnGh4/CWTphtRt1SYd75Gb9x2A6HrWmX+nt7MocYmId7iQ2YmECszPpkNJVh iA== Received: from pps.reinject (localhost [127.0.0.1]) by mx0b-001b2d01.pphosted.com (PPS) with ESMTPS id 3md421301h-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 12 Dec 2022 00:59:05 +0000 Received: from m0098420.ppops.net (m0098420.ppops.net [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 2BC0wW3u002588; Mon, 12 Dec 2022 00:59:04 GMT Received: from ppma03ams.nl.ibm.com (62.31.33a9.ip4.static.sl-reverse.com [169.51.49.98]) by mx0b-001b2d01.pphosted.com (PPS) with ESMTPS id 3md4213015-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 12 Dec 2022 00:59:04 +0000 Received: from pps.filterd (ppma03ams.nl.ibm.com [127.0.0.1]) by ppma03ams.nl.ibm.com (8.17.1.19/8.17.1.19) with ESMTP id 2BBNDcFA028390; Mon, 12 Dec 2022 00:59:02 GMT Received: from smtprelay02.fra02v.mail.ibm.com ([9.218.2.226]) by ppma03ams.nl.ibm.com (PPS) with ESMTPS id 3mchr61w7j-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 12 Dec 2022 00:59:02 +0000 Received: from smtpav03.fra02v.mail.ibm.com (smtpav03.fra02v.mail.ibm.com [10.20.54.102]) by smtprelay02.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 2BC0x0ZH41026032 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 12 Dec 2022 00:59:00 GMT Received: from smtpav03.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 7879C20043; Mon, 12 Dec 2022 00:59:00 +0000 (GMT) Received: from smtpav03.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id EE30C20040; Mon, 12 Dec 2022 00:58:59 +0000 (GMT) Received: from ozlabs.au.ibm.com (unknown [9.192.253.14]) by smtpav03.fra02v.mail.ibm.com (Postfix) with ESMTP; Mon, 12 Dec 2022 00:58:59 +0000 (GMT) Received: from [9.192.255.228] (unknown [9.192.255.228]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.au.ibm.com (Postfix) with ESMTPSA id E900B602EF; Mon, 12 Dec 2022 11:58:56 +1100 (AEDT) Message-ID: Subject: Re: [PATCH 2/4] fs: define a firmware security filesystem named fwsecurityfs From: Andrew Donnellan To: Nayna , Greg Kroah-Hartman Cc: Nayna Jain , linuxppc-dev@lists.ozlabs.org, linux-fsdevel@vger.kernel.org, linux-efi@vger.kernel.org, linux-security-module , linux-kernel@vger.kernel.org, Michael Ellerman , npiggin@gmail.com, christophe.leroy@csgroup.eu, Dov Murik , George Wilson , Matthew Garrett , Dave Hansen , Benjamin Herrenschmidt , Paul Mackerras , Russell Currey , Stefan Berger , "Serge E. Hallyn" , "Ritesh Harjani (IBM)" Date: Mon, 12 Dec 2022 11:58:56 +1100 In-Reply-To: <6f2a4a5f-ab5b-8c1b-47d5-d4e6dca5fc3a@linux.vnet.ibm.com> References: <20221106210744.603240-1-nayna@linux.ibm.com> <20221106210744.603240-3-nayna@linux.ibm.com> <8447a726-c45d-8ebb-2a74-a4d759631e64@linux.vnet.ibm.com> <20221119114234.nnfxsqx4zxiku2h6@riteshh-domain> <6f2a4a5f-ab5b-8c1b-47d5-d4e6dca5fc3a@linux.vnet.ibm.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.46.1 (3.46.1-1.fc37) MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: HNXLB6tPj93LDuXtj2ObhDK_-4Cie0yq X-Proofpoint-GUID: Fp2TTvT7JoTQaaqS3UEUpIvBegOspgGa X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.923,Hydra:6.0.545,FMLib:17.11.122.1 definitions=2022-12-10_10,2022-12-08_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 suspectscore=0 spamscore=0 clxscore=1011 bulkscore=0 mlxlogscore=732 impostorscore=0 phishscore=0 priorityscore=1501 adultscore=0 malwarescore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2210170000 definitions=main-2212120003 X-Spam-Status: No, score=-2.0 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_EF,RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 2022-11-23 at 13:57 -0500, Nayna wrote: >=20 > Given there are no other exploiters for fwsecurityfs and there should > be=20 > no platform-specific fs, would modifying sysfs now to let userspace=20 > create files cleanly be the way forward? Or, if we should strongly=20 > consider securityfs, which would result in updating securityfs to > allow=20 > userspace creation of files and then expose variables via a more=20 > platform-specific directory /sys/kernel/security/pks? We want to pick > the best available option and would find some hints on direction > helpful=20 > before we develop the next patch. Ping - it would be helpful for us to know your thoughts on this. Andrew --=20 Andrew Donnellan OzLabs, ADL Canberra ajd@linux.ibm.com IBM Australia Limited