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[209.132.180.67]) by mx.google.com with ESMTP id f12si18023143pgm.355.2019.02.28.05.42.56; Thu, 28 Feb 2019 05:43:11 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=redhat.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731546AbfB1Nlz (ORCPT + 99 others); Thu, 28 Feb 2019 08:41:55 -0500 Received: from mx1.redhat.com ([209.132.183.28]:45678 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725967AbfB1Nlz (ORCPT ); Thu, 28 Feb 2019 08:41:55 -0500 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id C05563247895; Thu, 28 Feb 2019 13:41:54 +0000 (UTC) Received: from dhcp-128-65.nay.redhat.com (ovpn-12-41.pek2.redhat.com [10.72.12.41]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 7F0EB1973E; Thu, 28 Feb 2019 13:41:51 +0000 (UTC) Date: Thu, 28 Feb 2019 21:41:46 +0800 From: Dave Young To: Mimi Zohar Cc: linux-integrity@vger.kernel.org, linux-security-module@vger.kernel.org, linux-kernel@vger.kernel.org, kexec@lists.infradead.org, David Howells , Eric Biederman Subject: Re: [PATCH 2/3] scripts/ima: define a set of common functions Message-ID: <20190228134146.GA7528@dhcp-128-65.nay.redhat.com> References: <1548960936-7800-1-git-send-email-zohar@linux.ibm.com> <1548960936-7800-3-git-send-email-zohar@linux.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1548960936-7800-3-git-send-email-zohar@linux.ibm.com> User-Agent: Mutt/1.9.5 (2018-04-13) X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.40]); Thu, 28 Feb 2019 13:41:54 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Mimi, Sorry for jumping in late, just noticed this kexec selftests, I think we also need a kexec load test not only for ima, but for general kexec On 01/31/19 at 01:55pm, Mimi Zohar wrote: > Define and move get_secureboot_mode() to a common file for use by other > tests. > > Signed-off-by: Mimi Zohar > --- > tools/testing/selftests/ima/common_lib.sh | 20 ++++++++++++++++++++ > tools/testing/selftests/ima/test_kexec_load.sh | 17 +++-------------- > 2 files changed, 23 insertions(+), 14 deletions(-) > create mode 100755 tools/testing/selftests/ima/common_lib.sh > > diff --git a/tools/testing/selftests/ima/common_lib.sh b/tools/testing/selftests/ima/common_lib.sh > new file mode 100755 > index 000000000000..ae097a634da5 > --- /dev/null > +++ b/tools/testing/selftests/ima/common_lib.sh > @@ -0,0 +1,20 @@ > +#!/bin/sh > +# SPDX-License-Identifier: GPL-2.0+ > + > +get_secureboot_mode() > +{ > + EFIVARFS="/sys/firmware/efi/efivars" > + # Make sure that efivars is mounted in the normal location > + if ! grep -q "^\S\+ $EFIVARFS efivarfs" /proc/mounts; then > + echo "$TEST: efivars is not mounted on $EFIVARFS" >&2 > + exit $ksft_skip > + fi > + > + # Get secureboot mode > + file="$EFIVARFS/SecureBoot-*" > + if [ ! -e $file ]; then > + echo "$TEST: unknown secureboot mode" >&2 > + exit $ksft_skip > + fi > + return `hexdump $file | awk '{print substr($4,length($4),1)}'` > +} Do you want to get the Secureboot status here? I got some advice from Peter Jones previously, thus we have below in our kdump scripts: https://src.fedoraproject.org/cgit/rpms/kexec-tools.git/tree/kdump-lib.sh See the function is_secure_boot_enforced(), probably you can refer to that function and check setup mode as well. > diff --git a/tools/testing/selftests/ima/test_kexec_load.sh b/tools/testing/selftests/ima/test_kexec_load.sh > index 74423c4229e2..5e3566738888 100755 > --- a/tools/testing/selftests/ima/test_kexec_load.sh > +++ b/tools/testing/selftests/ima/test_kexec_load.sh > @@ -5,7 +5,7 @@ > # is booted in secureboot mode. > > TEST="$0" > -EFIVARFS="/sys/firmware/efi/efivars" > +. ./common_lib.sh > rc=0 > > # Kselftest framework requirement - SKIP code is 4. > @@ -17,19 +17,8 @@ if [ $(id -ru) != 0 ]; then > exit $ksft_skip > fi > > -# Make sure that efivars is mounted in the normal location > -if ! grep -q "^\S\+ $EFIVARFS efivarfs" /proc/mounts; then > - echo "$TEST: efivars is not mounted on $EFIVARFS" >&2 > - exit $ksft_skip > -fi > - > -# Get secureboot mode > -file="$EFIVARFS/SecureBoot-*" > -if [ ! -e $file ]; then > - echo "$TEST: unknown secureboot mode" >&2 > - exit $ksft_skip > -fi > -secureboot=`hexdump $file | awk '{print substr($4,length($4),1)}'` > +get_secureboot_mode > +secureboot=$? > > # kexec_load should fail in secure boot mode > KERNEL_IMAGE="/boot/vmlinuz-`uname -r`" > -- > 2.7.5 > Thanks Dave