`spoc record` fixes

[mhils]

What type of PR is this?

/kind bug

What this PR does / why we need it:

This PR fixes two bugs with the recorder: First, we now properly handle long executable names. Second, we now track file descriptors per PID, which makes considerably more sense. :)

Which issue(s) this PR fixes:

None

Does this PR have test?

No.

Special notes for your reviewer:

Does this PR introduce a user-facing change?

Fix `spoc record` to work with >15 character executable names.

[k8s-ci-robot]

Hi @mhils. Thanks for your PR.

I'm waiting for a kubernetes-sigs member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[mhils]

This PR here is ready. But if I rebase it onto main, nix-build is hanging indefinitely while compiling LLVM on my system. Still need to figure out what's up with that. 🤷

[saschagrunert]

/ok-to-test

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 36.36364% with 7 lines in your changes are missing coverage. Please review.

Project coverage is 41.14%. Comparing base (11d77f4) to head (e6a7ba2). Report is 174 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2241      +/-   ##
==========================================
- Coverage   45.50%   41.14%   -4.36%     
==========================================
  Files          79      107      +28     
  Lines        7782    15533    +7751     
==========================================
+ Hits         3541     6391    +2850     
- Misses       4099     8671    +4572     
- Partials      142      471     +329     

[ccojocar]

@mhils I think PR needs a rebase. Thanks

[mhils]

Thanks y'all. I have added four more commits with various AppArmor-related fixes that should all be super uncontroversial. :)

[ccojocar]

/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ccojocar, mhils, saschagrunert

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