Robert Allan JamesandClaude Sonnet 5
f4ded3e1a8
Captain Bob, 2026-09-07: "starting with that 00 user we created, we're
going to give access only to FORTH 79 and 83 standard words. everything
else is locked down."
New capsules/acl-std79.4th (blocks 4023-4047): walks a VM's own
dictionary (>LINK/LINK> traversal, same as ACL-INIT-PRIMITIVES/WORDS
already use) and permanently denies+pins every word not on an explicit
FORTH-79/83 allowlist, extracted from the real registered word set
(stack_words.c through control_words.c), not recited from memory.
Deliberately excludes, beyond plain non-standard words: BYE (100% ACL
bypass to the emergency console -- "needs more discussion, exclude for
now"), COLD/WARM/REBOOT/SAVE-SYSTEM (system lifecycle), the block/screen
editor L/S/SHOW/EDIT/UPDATE/SAVE-BUFFERS (lets a session rewrite
persistent block/capsule content, defeating the lockdown even though
nominally standard), BLK-ACL-*/BLK-OWNER@ (StarForth-specific), and
FORGET/FENCE (flagged as an unrestricted superpower word, 2026-09-03
audit). Keeps WORDS/VLIST/SEE (introspection only -- ACL is enforced
per-target-word at execution time regardless of how an XT was
obtained) and the parenthesized control-flow runtime primitives
((BRANCH) etc. -- IF/DO/LOOP compile calls to these; denying them
breaks ordinary control flow, not security).
MintPersonality enum (capsule_mint.h) lets capsule_mint_identity()
select which personality-source template gets written to a new
identity's devblock -- MINT_PERSONALITY_DEFAULT (unchanged) or
MINT_PERSONALITY_STD79_LOCKDOWN (EXECs acl-std79.4th then
ACL-LOCKDOWN-STD79 as the VM's own last bootstrap step). The actual
restriction logic stays entirely in FORTH per .claude/CLAUDE.md's
Word-Level ACL System rules ("ACL policy belongs in ACL.4th, never in
C") -- capsule_mint.c only picks which few-line bootstrap stub to
write. MINT's own stack signature gains a trailing restrict? flag;
capsule_zuse_boot.c's genesis mint (Zuse herself) explicitly passes
MINT_PERSONALITY_DEFAULT -- the superuser is never restricted.
Two real bugs found and fixed live during testing, both the same class
of self-referential fault: ACL-LOCKDOWN-STD79's own walk loop calls
ACL-STD79-ALLOWED?/ACL-STD79-LIST/ACL-ALLOW!/ACL-PIN on every single
iteration to do its job -- none of those are FORTH-79/83 standard
words, so the walk was denying its own load-bearing infrastructure
partway through and then faulting the next time it tried to call it
("VM fault -- emergency console disabled; halting", reproduced twice
live). Fixed by explicitly protecting all four in the allowlist
(block 4047) -- they must stay allowed for the walk to finish, not
because they belong on a "standard words" list.
Verified live end-to-end: minted a throwaway test identity with the
restrict? flag, confirmed her WIREBIND birth completes cleanly (no
faults, no shadow conflicts) on a single real attach, then USE'd into
her VM and confirmed standard arithmetic and user-defined words work
(1 2 + . -> 3; : X 5 5 * . ; X -> 25) while KILL is entirely unknown to
her dictionary and VM-EXEC is denied. One real, non-fatal side effect
found and left as-is (not asked to fix): the fleet's inter-VM messaging
pump (MSG-ARENA) is also denied by the lockdown, logging a harmless
per-idle-tick warning -- a fully locked-down VM doesn't participate in
message routing.
Not yet applied to the real identity 00 -- this commit is the
mechanism, verified against a disposable test identity only.
Three-arch clean qemu acceptance (single Zuse device, standard
regression case) passed on amd64, aarch64, and riscv64.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014Ec88YKxxhZGG1RNnune78
include/starkernel/
Headers for LithosAnanke, the bare-metal UEFI kernel (src/starkernel/).
Built only via Makefile.starkernel; gated by __STARKERNEL__ when shared
with hosted code.
uefi.h— UEFI protocol/type definitions consumed by the loader.elf64.h,elf_loader.h— ELF64 parsing and kernel-image loading.boot_info_offsets.h— struct-offset constants shared between the assembly bootstrap and the C boot path.arch.h,apic.h,timer.h— architecture init, APIC interrupt controller, timer (TSC/HPET/APIC, 100 Hz heartbeat).console.h,framebuffer.h,vt100.h— UART 16550 console, framebuffer driver, and VT100 terminal emulation over the framebuffer.pmm.h,vmm.h,kmalloc.h— physical memory manager (bitmap allocator), 4-level x86_64 paging, kernel heap allocator.pci.h,virtio_blk.h— PCI enumeration and the VirtIO block device driver (disk backend for the kernel block subsystem).capsule.h,capsule_birth.h,capsule_loader.h,capsule_run.h,capsule_vm_physics.h,capsule_generated.h— capsule system types, birth protocol, physics-runtime capsule bindings, and the build-time- generated capsule directory (seetools/mkcapsule.c).kernel_args.h,cmdline.h— boot-time kernel argument parsing (starforth.cfg/ command line).repl.h— kernel REPL.log.h,doe_log.h— kernel logging and DoE metrics logging.q48_16.h— kernel-build copy of Q48.16 fixed-point arithmetic.xxhash64.h— content-addressing hash used for capsule IDs.hal_memory.h— hardware-abstraction-layer memory interface.
Subdirectories:
hal/— top-level hardware-abstraction-layer interface.vm/— kernel VM subsystem headers (capsule arena, parity logging, bootstrap wiring).freestanding/— minimal libc-shim headers (assert.h,ctype.h,errno.h,inttypes.h,math.h,sched.h,signal.h,stdio.h,stdlib.h,string.h,time.h,sys/time.h,sys/types.h) for building shared VM code in the freestanding kernel environment, where no real libc is available.