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pcrlock: document the env vars we honour to find measurement logs

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This env vars have been supported for a while, let's document them where
we usually document them.
This commit is contained in:
Lennart Poettering 2024-02-21 14:42:50 +01:00
parent eafadb91ce
commit 0691d0e5a1
1 changed files with 10 additions and 0 deletions
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docs/ENVIRONMENT.md
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@ -622,6 +622,16 @@ SYSTEMD_HOME_DEBUG_SUFFIX=foo \
to expose a single device only, since those identifiers better should be kept
unique.
`systemd-pcrlock`, `systemd-pcrextend`:
* `$SYSTEMD_MEASURE_LOG_USERSPACE` – the path to the `tpm2-measure.log` file
(containing userspace measurement data) to read. This allows overriding the
default of `/run/log/systemd/tpm2-measure.log`.
* `$SYSTEMD_MEASURE_LOG_FIRMWARE` – the path to the `binary_bios_measurements`
file (containing firmware measurement data) to read. This allows overriding
the default of `/sys/kernel/security/tpm0/binary_bios_measurements`.
Tools using the Varlink protocol (such as `varlinkctl`) or sd-bus (such as
`busctl`):