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62 lines
2.2 KiB
62 lines
2.2 KiB
6 months ago
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From 46f2825866379e5019516269c9de88b8e2ba7c78 Mon Sep 17 00:00:00 2001
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From: Lennart Poettering <lennart@poettering.net>
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Date: Sun, 16 Oct 2022 18:21:12 +0200
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Subject: [PATCH] units: measure /etc/machine-id into PCR 15 during early boot
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We want PCR 15 to be useful for binding per-system policy to. Let's
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measure the machine ID into it, to ensure that every OS we can
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distinguish will get a different PCR (even if the root disk encryption
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key is already measured into it).
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(cherry picked from commit 072c8f650519f47a575b1e39509599ace21e2c8f)
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Related: RHEL-16182
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---
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units/meson.build | 2 ++
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units/systemd-pcrmachine.service.in | 23 +++++++++++++++++++++++
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2 files changed, 25 insertions(+)
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create mode 100644 units/systemd-pcrmachine.service.in
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diff --git a/units/meson.build b/units/meson.build
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index a99f27adc5..9046e5d066 100644
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--- a/units/meson.build
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+++ b/units/meson.build
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@@ -266,6 +266,8 @@ in_units = [
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'sysinit.target.wants/'],
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['systemd-growfs-root.service', ''],
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['systemd-growfs@.service', ''],
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+ ['systemd-pcrmachine.service', 'HAVE_GNU_EFI HAVE_OPENSSL HAVE_TPM2',
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+ 'sysinit.target.wants/'],
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]
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add_wants = []
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diff --git a/units/systemd-pcrmachine.service.in b/units/systemd-pcrmachine.service.in
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new file mode 100644
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index 0000000000..e154a7eec1
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--- /dev/null
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+++ b/units/systemd-pcrmachine.service.in
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@@ -0,0 +1,23 @@
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+# SPDX-License-Identifier: LGPL-2.1-or-later
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+#
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+# This file is part of systemd.
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+#
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+# systemd is free software; you can redistribute it and/or modify it
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+# under the terms of the GNU Lesser General Public License as published by
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+# the Free Software Foundation; either version 2.1 of the License, or
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+# (at your option) any later version.
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+
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+[Unit]
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+Description=TPM2 PCR Machine ID Measurement
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+Documentation=man:systemd-pcrmachine.service(8)
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+DefaultDependencies=no
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+Conflicts=shutdown.target
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+Before=sysinit.target shutdown.target
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+AssertPathExists=!/etc/initrd-release
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+ConditionSecurity=tpm2
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+ConditionPathExists=/sys/firmware/efi/efivars/StubPcrKernelImage-4a67b082-0a4c-41cf-b6c7-440b29bb8c4f
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+
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+[Service]
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+Type=oneshot
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+RemainAfterExit=yes
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+ExecStart={{ROOTLIBEXECDIR}}/systemd-pcrphase --machine-id
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