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chimera-gfx-Public/docs/adr/0003-fail-closed-probe.md
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ADR-0003: Fail-closed capability probe

  • Status: accepted
  • Date: 2026-07-16

Decision

The PS5 probe is disabled in ordinary builds. A probe build embeds exactly one approved firmware identifier, defaulting to NONE. Runtime requires an exact firmware match and the literal --acknowledge-read-only-probe argument before module loading. The checked-in firmware matrix is empty.

The platform shim may call only dlopen, dlsym, and dlclose. Logs contain symbol names and booleans, never addresses. There is no deploy target.

Consequences

Default artifacts cannot discover symbols on hardware. A deliberately gated artifact still requires separate human authorization before transfer or execution. Loader-internal side effects remain an explicitly recorded unknown.