Robert Allan JamesandClaude Sonnet 5
c05b70c8d6
Policy decided for the kernel-only audit scope: an interactive command's direct response stays on console_println/console_puts; everything else (state transitions, background diagnostics, audit trails) routes through log_message() at the appropriate level, matching capsule_mint.c's verify_mint() precedent. Documented, not code-swept here -- reclassifying individual sites is Stage D's job. LOG-FLUSH deferred again, explicitly: the per-VM log buffer its own doc comment presumes (vm_log_buffer.h) doesn't exist anywhere in the tree -- building it is real feature work needing its own scoped stage. Level-aware eviction built: log_region_append() now reads the oldest ring slot's own level before evicting it, protecting ERROR/WARN records from being pushed out by INFO/DEBUG churn -- drops the incoming low-priority record instead. Found and fixed an adjacent bug while making this change: the prior two-valued return contract would have made a benign "dropped by design" outcome indistinguishable from a genuine write failure to its one caller, which unconditionally set vm->error on any nonzero return. Changed to a three-valued contract (0 success, 1 dropped by design, -1 genuine failure). Three-arch clean qemu acceptance passed. Eviction path itself not live-exercised (needs 128+ LOG-APPEND calls to fill the ring) -- flagged, matching this project's own precedent for that kind of gap. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01BWpNjdwPtFLuVLaAq44L9K
capsules/
FORTH personality files loaded by the VM at boot. A capsule is an immutable, content-addressed payload; its XXHash64 hash is its identity. Any mutation changes the hash and the birth protocol rejects the image.
Key files
| File | Type | Purpose |
|---|---|---|
init.4th |
(m) MAMA_INIT |
Default Mama VM personality — loaded at LBN 2048 |
ACL.4th |
user | Word-level ACL system; self-activating at boot |
zuse.4th |
user | Bootstrap superuser; loaded by ACL.4th |
doe.4th |
user | DoE workload words (EXEC-DOE) — opt-in |
workload-0.4th … workload-9.4th |
(p) |
Numbered personality variants |
init-l8-*.4th |
(p) |
L8 Jacquard mode variants (stable/volatile/diverse/temporal/transition/omni) |
hermes/init.4th |
(p) |
Hermes baby VM personality |
artemis/init.4th |
(p) |
Artemis baby VM personality |
Block namespace
Block ranges are shared across all loaded capsules — collisions cause silent word-definition overwrites.
| Range | Owner |
|---|---|
| 2048–2099 | init.4th |
| 2100–2199 | doe.4th |
| 3000–3999 | workload capsules |
| 4000+ | user-defined (ACL.4th, zuse.4th, …) |
Each block is limited to 1024 bytes. Verify with wc -c before committing.
See also
experiments/bare_metal/README.md— DoE protocols and block namespace rulesdocs/03-architecture/word-acl/DESIGN.md— ACL system designtools/mkcapsule.c— assembles capsules intocapsule_generated.c- Project root