Robert Allan JamesandClaude Sonnet 5
cc9521d2cc
Three tightly-coupled changes, verified together per Captain Bob's own "getting rid of the emergency cli" direction: 1. Zuse's identity is thumbdrive-resident, never system-resident. New zuse_genesis_marker_t (magic/version/zuse_pubkey[32]/crc) replaces zuse_cert_devblock_t's slot in the top-of-device fence -- the system now remembers only that a root identity exists and its pubkey, never a seed. zuse_cert_devblock_t is kept in the repo, marked superseded, no longer written by any code path. capsule_mint_identity() grows a genesis mode (issuer_vm=NULL): no cert is built or written (Zuse isn't verified against a separate signer -- she's recognized by pubkey match against the marker) and two new optional out-params (out_pubkey/out_seed) let the caller install the cert immediately after a genesis mint. New capsule_zuse_boot_try_attach() (capsule_zuse_boot.c), called from sk_repl_idle() on every fresh USB attach (the only point in the boot lifecycle a thumbdrive can actually be detected -- attach polling doesn't exist yet at kernel_main.c's old one-shot mint point, which is why that whole block is gone): no marker + blank drive -> genesis-mint; marker present + matching drive -> read its own user_identity_seed_t, install the cert. Either way, re-runs ACL-ZUSE-BOOT (zuse.4th) so zuse_session activates exactly like it always has for a same-boot cert install -- ACL-PIN only blocks redefinition, not re-execution, so no new C-side auth logic needed. 2. ACL.4th activated (capsules/init.4th) -- inactive all session until now. Found and fixed a real bug this immediately surfaced: zuse.4th's ACL-ZUSE-BOOT tried `['] ACL-ZUSE-BOOT ACL-PIN` from inside its own still-compiling definition -- the word isn't findable yet at that point, so the whole definition silently failed to compile every previous boot this session (dormant, since ACL.4th never loaded). Fixed: pin after the definition closes, not from within it -- it only needs to happen once anyway, and pinning doesn't block the re-invocation genesis/attach needs. 3. The unauthenticated emergency-CLI ACL bypass is retired (repl.c): `emergency_console = is_hera ? (zuse_session ? 0 : 1) : 0` deleted from both sk_repl_step and sk_repl_run. Every word run from Hera's own bare prompt now goes through ordinary ACL enforcement; emergency_console is driven only by the genuine C-level fault handler again. Added ZUSE-SESSION? (starforth_words.c), a read-only diagnostic matching ZUSE-PUBKEY@'s own precedent, to verify the whole chain directly rather than by inference. Verified end-to-end live in QEMU: fresh boot, no thumbdrive -> ZUSE-SESSION? reads 0. Attach a genuinely blank drive via QMP -> genesis mint fires automatically (no typing) -> ZUSE-SESSION? reads -1 (true). Hermes/Artemis both birth clean on all three architectures with ACL now actually enforced for the first time all session -- no denials, no UNKNOWN WORD beyond the deliberate POST self-test cases. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_019ZGkimpfyh63EZyRkNbkPD
47 lines
2.2 KiB
C
47 lines
2.2 KiB
C
/*
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* zuse_genesis_marker.h -- on-disk record format for the system-resident
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* "a root Zuse identity already exists" marker (FABRIC-3.md §F.21),
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* stored in devblock_from_top=0 of the top-of-device system-metadata
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* fence (block_subsystem.h's blk_meta_zone_read()/write(), same location
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* zuse_cert_devblock_t used to occupy).
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*
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* Supersedes zuse_cert_devblock_t (zuse_cert_devblock.h, kept in the repo
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* as historical record, no longer written): that type stored Zuse's own
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* *seed* system-resident. Under the thumbdrive-resident Zuse design
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* (§F.20/§F.21), the seed lives only on Zuse's own minted thumbdrive --
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* this record deliberately holds only her *public* key, enough to (a)
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* know genesis has already happened, so a second blank thumbdrive
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* attached on some later boot never mints a second competing root, and
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* (b) recognize which attached identity is genuinely hers. Losing this
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* fence record is not a security problem (it's not a secret); losing the
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* thumbdrive itself is what actually loses the identity.
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*/
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#ifndef STARKERNEL_ZUSE_GENESIS_MARKER_H
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#define STARKERNEL_ZUSE_GENESIS_MARKER_H
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#include <stdint.h>
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#define ZUSE_GENESIS_MARKER_MAGIC \
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((uint32_t)'Z' | ((uint32_t)'G' << 8) | ((uint32_t)'E' << 16) | ((uint32_t)'N' << 24))
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#define ZUSE_GENESIS_MARKER_VERSION 1u
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typedef struct {
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uint32_t magic; /* ZUSE_GENESIS_MARKER_MAGIC; anything else means
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* "genesis has not happened yet" (blank/foreign
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* bytes), not a format-corruption error. */
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uint32_t version; /* ZUSE_GENESIS_MARKER_VERSION */
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uint8_t zuse_pubkey[32]; /* Ed25519 public key of the root Zuse
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* identity minted at genesis. No seed here --
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* that lives only on Zuse's own thumbdrive. */
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uint64_t crc; /* CRC-64/ISO (block_subsystem.h's compute_crc64())
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* over every byte of this struct up to (not
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* including) this field. */
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uint8_t _pad[4096 - (4 + 4 + 32 + 8)];
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} zuse_genesis_marker_t;
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_Static_assert(sizeof(zuse_genesis_marker_t) == 4096,
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"zuse_genesis_marker_t must be exactly one 4 KiB devblock");
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#endif /* STARKERNEL_ZUSE_GENESIS_MARKER_H */
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