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git.stella-ops.org/docs/modules/scanner/operations/entrypoint-lang-elixir.md
master 7b5bdcf4d3 feat(docs): Add comprehensive documentation for Vexer, Vulnerability Explorer, and Zastava modules 
- Introduced AGENTS.md, README.md, TASKS.md, and implementation_plan.md for Vexer, detailing mission, responsibilities, key components, and operational notes.
- Established similar documentation structure for Vulnerability Explorer and Zastava modules, including their respective workflows, integrations, and observability notes.
- Created risk scoring profiles documentation outlining the core workflow, factor model, governance, and deliverables.
- Ensured all modules adhere to the Aggregation-Only Contract and maintain determinism and provenance in outputs.
2025-10-30 00:09:39 +02:00

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Entry-Point Runtime — Elixir / Erlang (BEAM)

Signals to gather

  • argv0 equals elixir, iex, mix, erl, beam.smp, or release scripts (bin/app start).
  • Release layouts: _build/prod/rel/<app>/bin/<app>, releases/<version>/vm.args, sys.config.
  • Environment variables (MIX_ENV, RELEASE_COOKIE, RELEASE_NODE).
  • Config files (config/config.exs, config/prod.exs).

Implementation notes

  • Recognise Distillery / mix release scripts that exec the real BEAM VM.
  • When release script is invoked with eval, treat the wrapper as part of the chain but classify runtime as Elixir.
  • Inspect vm.args for node name, cookie, and distributed settings.
  • For pure Erlang services (no Elixir), the same detector should fire using erl hints.

Evidence & scoring

  • Boost for release directories and BEAM VM binaries (beam.smp).
  • Add evidence for config files and env vars.
  • Penalise minimal images lacking release artefacts (could be generic shell wrappers).

Edge cases

  • Phoenix apps often rely on bin/server wrapper—ShellFlow must collapse to release script.
  • Multi-node clusters may start multiple BEAM instances; treat as Supervisor if several nodes stay active.