Files
LithosAnanke/kernel/include/starkernel/zuse_cert_devblock.h
T
Claude 3bd81097e1 chore(license): an SPDX header on every source file that had none (LicenseRef-Starship-1.0) [skip ci]
The header scan (Captain Bob, 2026-11-10): 788 source files -- 351 with the
SL-1.0 header, 12 with the old name (docs/working/experiments, kept by
ruling), 31 under someone else's licence (tools/kconfig, Linux's, GPL-2.0:
kept), and 394 with none. Ruled: the SPDX form; capsules (.4th, .f18) and
proofs (.thy) left for a ruling of their own (mkcapsule's 64x16 block format,
content-addressed capsules).

253 files now begin
    SPDX-License-Identifier: LicenseRef-Starship-1.0
    Copyright (c) 2023-2026 Robert A. James
as a /* */ block (C, headers, assembly, linker scripts) or # lines (scripts,
Makefiles, Kconfig; below a shebang or a coding line); tools/mkcapsule.c,
which had the copyright line, gets the SPDX line only.

Not touched: docs/working/ (archive and old campaign material, as the
ruling kept the experiments); v4/system/post_cases.c (generated by
v4/tools/mkpost.py, "do not edit" -- the generator has the header).

Comments only: the kernel builds on amd64, aarch64, riscv64; make -C v4
test-32: 39 programs, 0 failures; every changed script parses.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01GE3SDvQn5EoxdGufk84zz2
2026-11-10 04:12:49 +00:00

63 lines
3.0 KiB
C

/* SPDX-License-Identifier: LicenseRef-Starship-1.0
* Copyright (c) 2023-2026 Robert A. James
*/
/*
* zuse_cert_devblock.h -- SUPERSEDED 2026-08-28 (FABRIC-2.md §F.20/§F.21).
* Zuse is now thumbdrive-resident, not system-resident: her seed lives
* only on her own minted thumbdrive, never written to the fence. The
* fence's devblock_from_top=0 slot this type used to occupy now holds
* zuse_genesis_marker_t (zuse_genesis_marker.h) instead -- pubkey only,
* no seed. This type is no longer written by any code path; kept in the
* repo as historical record of the format it replaced, per this
* project's own convention for superseded design (see e.g. the
* TRIPOD.md/HERMES.md/ARTEMIS.md/CONSOLE.md superseded-header pattern).
* Do not resurrect writes to this format.
*
* Original doc, kept for context:
*
* on-disk record format for Zuse's cert, stored
* in devblock_from_top=0 of the top-of-device system-metadata fence
* (block_subsystem.h's blk_meta_zone_read()/write(), Phase 8, FABRIC-2.md
* §C). Raw, unpacked 4 KiB devblock -- same convention as the volume
* header itself (magic + version + fields + pad-to-4096, real CRC from
* day one, matching homeblocks_sig_t's own precedent for exactly this
* reason: this gates a real security check, not a placeholder).
*
* Deliberately its own header, not inlined at the one call site that
* uses it today (kernel_main.c's first-boot mint-or-load): the ongoing
* `MINT` word (still open, FABRIC-2.md) will be a second consumer of
* this exact format later, and the format should be stable and
* documented once rather than ad-hoc.
*/
#ifndef STARKERNEL_ZUSE_CERT_DEVBLOCK_H
#define STARKERNEL_ZUSE_CERT_DEVBLOCK_H
#include <stdint.h>
/* Packed via shifts, not a hand-computed hex literal -- this project's
* own standing lesson about hand-derived numeric constants in this
* class of code (see FABRIC-2.md's Ed25519/scalar25519 writeups). */
#define ZUSE_CERT_DEVBLOCK_MAGIC \
((uint32_t)'Z' | ((uint32_t)'U' << 8) | ((uint32_t)'S' << 16) | ((uint32_t)'E' << 24))
#define ZUSE_CERT_DEVBLOCK_VERSION 1u
typedef struct {
uint32_t magic; /* ZUSE_CERT_DEVBLOCK_MAGIC; anything else means
* "not a real cert yet" (blank/foreign bytes),
* not a format-corruption error */
uint32_t version; /* ZUSE_CERT_DEVBLOCK_VERSION */
uint8_t seed[32]; /* Ed25519 seed -- the private identity */
uint8_t pubkey[32]; /* Ed25519 public key derived from seed at mint time */
uint64_t crc; /* CRC-64/ISO (block_subsystem.h's compute_crc64())
* over every byte of this struct up to (not
* including) this field -- real from day one,
* this gates a real security check */
uint8_t _pad[4096 - (4 + 4 + 32 + 32 + 8)];
} zuse_cert_devblock_t;
_Static_assert(sizeof(zuse_cert_devblock_t) == 4096,
"zuse_cert_devblock_t must be exactly one 4 KiB devblock");
#endif /* STARKERNEL_ZUSE_CERT_DEVBLOCK_H */