Grade Landlock network egress and microVM readiness#279
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The `doctor --grade` / conformance score covered eight guarantees but not the two boundary features added recently, so a host running them got no credit in the score CI and admission checks read. Add two grade components: - `landlock_net_egress` -- active when the kernel's Landlock ABI is >= 4, so the process backend's TCP-egress rules can confine connect() to the policy's ports. - `microvm_ready` -- active when a supported VMM and an accessible /dev/kvm are present, so the microVM hardware boundary can be launched; evidence carries the full readiness probe (vmm kind/path, kvm, blocking reasons). The grade is now a 10-point score. README and the grade test are updated, and each new probe has a focused test covering the active and inactive paths. Full suite: 493 passed, 6 skipped. black/isort/flake8/mypy clean. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01PbbJc7Ntj159D9LNGevwC2
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Summary
doctor --grade/ the conformance score covered eight guarantees but not the two boundary features added recently (#273 Landlock TCP-egress, #276 microVM). A host that actually provides them got no credit in the score that CI and admission checks read. This closes that observability gap.New grade components
landlock_net_egress— active when the kernel's Landlock ABI is ≥ 4, so the process backend's TCP-egress rules can confineconnect()to the policy's ports. Evidence carries the detected ABI and the minimum required.microvm_ready— active when a supported VMM and an accessible/dev/kvmare present, so the microVM hardware boundary can be launched. Evidence carries the full readiness probe (VMM kind/path,kvm, and any blocking reasons).The grade is now a 10-point score. Both probes are pure host probes (no side effects) and degrade gracefully — inactive with evidence on hosts that lack the feature, exactly like the existing components.
Docs & tests
README's grade description is updated to 10 points and lists the two new guarantees. The aggregate grade test is updated (max_score 8 → 10, new labels/keys in order), and each new probe gets a focused test asserting both the active and inactive paths. Verified end-to-end:
python -m pyisolate.conformance --gradenow reports all ten components.Full suite: 493 passed, 6 skipped. black/isort/flake8/mypy clean.
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