tpm2_eventlog; Handle EV_IPL event in PLCR 12 for sd-boot >= 251

[berrange]

When using sd-boot, tpm2-eventlog throws warnings:

WARN: Event 23 is unexpectedly not extending either PCR 8, 9, or 14 WARN: Event 24 is unexpectedly not extending either PCR 8, 9, or 14

Not only is the data put in PCR 12, but sd-boot doesn't add an unhashed prefix to the data, it hashes the entire event contents.

This pairs of commits addresses that problem

[codecov[bot]]

Codecov Report

Merging #3093 (775ea6e) into master (92f3bfd) will decrease coverage by 0.05%. The diff coverage is 66.96%.

@@            Coverage Diff             @@
##           master    #3093      +/-   ##
==========================================
- Coverage   76.68%   76.62%   -0.06%     
==========================================
  Files         172      172              
  Lines       23117    23202      +85     
==========================================
+ Hits        17727    17779      +52     
- Misses       5390     5423      +33     

Impacted Files	Coverage Δ
lib/tpm2_eventlog_yaml.c	80.10% <61.64%> (-3.02%)	:arrow_down:
lib/tpm2_eventlog.c	86.42% <76.92%> (-0.95%)	:arrow_down:

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[idesai]

@berrange can you please add the eventlog binary here and or add a test.

[berrange]

@berrange can you please add the eventlog binary here and or add a test.

New version

• adds an example eventlog binary, and al
• extends the eventlog.sh test to compare against desired expected YAML output and stderr warnings
• fixes the eventlog YAML generator to emit more spec compliant string data

[idesai]

@berrange, is there a test that uses the yaml files included in the PR?

[berrange]

@berrange, is there a test that uses the yaml files included in the PR?

Yes, look at the test/integration/tests/eventlog.sh changes in the commit test: track expected YAML output for eventlog For each sample eventlog bin file, it generates YAML output and compares to the expected YAML stored in git.