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systemd/units/systemd-pcrmachine.service.in
Lennart Poettering 072c8f6505 units: measure /etc/machine-id into PCR 15 during early boot
We want PCR 15 to be useful for binding per-system policy to. Let's
measure the machine ID into it, to ensure that every OS we can
distinguish will get a different PCR (even if the root disk encryption
key is already measured into it).
2023-01-17 09:42:16 +01:00

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SYSTEMD

# SPDX-License-Identifier: LGPL-2.1-or-later
#
# This file is part of systemd.
#
# systemd is free software; you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation; either version 2.1 of the License, or
# (at your option) any later version.
[Unit]
Description=TPM2 PCR Machine ID Measurement
Documentation=man:systemd-pcrmachine.service(8)
DefaultDependencies=no
Conflicts=shutdown.target
Before=sysinit.target shutdown.target
AssertPathExists=!/etc/initrd-release
ConditionSecurity=tpm2
ConditionPathExists=/sys/firmware/efi/efivars/StubPcrKernelImage-4a67b082-0a4c-41cf-b6c7-440b29bb8c4f
[Service]
Type=oneshot
RemainAfterExit=yes
ExecStart={{ROOTLIBEXECDIR}}/systemd-pcrphase --machine-id