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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 1EB7ECA9EA0 for ; Fri, 25 Oct 2019 16:50:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0039821E6F for ; Fri, 25 Oct 2019 16:50:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2440798AbfJYQut (ORCPT ); Fri, 25 Oct 2019 12:50:49 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:26512 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2440795AbfJYQut (ORCPT ); Fri, 25 Oct 2019 12:50:49 -0400 Received: from pps.filterd (m0098394.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x9PGgRKx105512; Fri, 25 Oct 2019 12:50:27 -0400 Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com with ESMTP id 2vv1reqhs5-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 25 Oct 2019 12:50:27 -0400 Received: from m0098394.ppops.net (m0098394.ppops.net [127.0.0.1]) by pps.reinject (8.16.0.27/8.16.0.27) with SMTP id x9PGi1Lh119460; Fri, 25 Oct 2019 12:50:27 -0400 Received: from ppma05wdc.us.ibm.com (1b.90.2fa9.ip4.static.sl-reverse.com [169.47.144.27]) by mx0a-001b2d01.pphosted.com with ESMTP id 2vv1reqhrc-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 25 Oct 2019 12:50:27 -0400 Received: from pps.filterd (ppma05wdc.us.ibm.com [127.0.0.1]) by ppma05wdc.us.ibm.com (8.16.0.27/8.16.0.27) with SMTP id x9PGkI2D026797; Fri, 25 Oct 2019 16:50:25 GMT Received: from b01cxnp23034.gho.pok.ibm.com (b01cxnp23034.gho.pok.ibm.com [9.57.198.29]) by ppma05wdc.us.ibm.com with ESMTP id 2vqt48b4mn-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 25 Oct 2019 16:50:25 +0000 Received: from b01ledav003.gho.pok.ibm.com (b01ledav003.gho.pok.ibm.com [9.57.199.108]) by b01cxnp23034.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x9PGoPdQ51315120 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 25 Oct 2019 16:50:25 GMT Received: from b01ledav003.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 1B31AB2065; Fri, 25 Oct 2019 16:50:25 +0000 (GMT) Received: from b01ledav003.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 09420B2066; Fri, 25 Oct 2019 16:50:24 +0000 (GMT) Received: from [9.85.155.79] (unknown [9.85.155.79]) by b01ledav003.gho.pok.ibm.com (Postfix) with ESMTP; Fri, 25 Oct 2019 16:50:23 +0000 (GMT) Subject: Re: [PATCH v9 3/8] powerpc: detect the trusted boot state of the system To: Lakshmi Ramasubramanian , Nayna Jain , linuxppc-dev@ozlabs.org, linux-efi@vger.kernel.org, linux-integrity@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Michael Ellerman , Benjamin Herrenschmidt , Paul Mackerras , Ard Biesheuvel , Jeremy Kerr , Matthew Garret , Mimi Zohar , Greg Kroah-Hartman , Claudio Carvalho , George Wilson , Elaine Palmer , Eric Ricther , "Oliver O'Halloran" , Prakhar Srivastava References: <20191024034717.70552-1-nayna@linux.ibm.com> <20191024034717.70552-4-nayna@linux.ibm.com> From: Nayna Jain Message-ID: <8a929e75-52c2-105b-365b-7521404a8ead@linux.vnet.ibm.com> Date: Fri, 25 Oct 2019 11:50:23 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-10-25_08:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=997 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1908290000 definitions=main-1910250154 Sender: linux-integrity-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-integrity@vger.kernel.org On 10/24/19 12:38 PM, Lakshmi Ramasubramanian wrote: > On 10/23/2019 8:47 PM, Nayna Jain wrote: > >> +bool is_ppc_trustedboot_enabled(void) >> +{ >> +    struct device_node *node; >> +    bool enabled = false; >> + >> +    node = get_ppc_fw_sb_node(); >> +    enabled = of_property_read_bool(node, "trusted-enabled"); > > Can get_ppc_fw_sb_node return NULL? > Would of_property_read_bool handle the case when node is NULL? Yes. Thanks & Regards,      - Nayna