Claude
5bb247d678
Not yet accepted (plan 2026-10-29-stick-5, Task 2, step 3). - gpt.c: the writer, gpt_grow_last() -- the backup entry array and header to the disk's end, the last partition to the last usable sector (whole MiB, capped), both headers' CRCs, the backup before the primary, the protective MBR's size; gpt_alternate_lba(). - sk_v4_grow.c: the volume grown to its partition -- its fence (the Artemis signature, Zuse's genesis marker) moved to the new top, the header last; the partition grown no further than the BAM tracks (the block subsystem places the fence by the device's size, so a volume must fill it). - sk_v4_identity.c: a stick of 8 GB or more whose GPT ends short of the disk is grown before its partitions are opened; "Artemis: grown to fill the stick" / "under 8 GB -- not grown" / "past 256 GiB ... left unused". - block_subsystem: blk_volume_compute_totals() (compute_totals_from_B, public) and blk_subsys_set_format_bam_for(); v3's behaviour unchanged. - mkartemis --bam-for, mkdiskimage.sh --bam-for, kernel/Makefile STICK_GROW_MIN_BYTES / STICK_ARTEMIS_CAP_GIB: the stick's and data stick's Artemis BAM sized for 256 GiB (6144 devblocks). STICK.md 5a: 256 GiB (R1). After: stick_grow PASS (16 GiB: 12129370 user blocks, 8 s POST to prompt; second boot not grown, recognised; sfdisk --verify: no errors), stick_small PASS, check_images.sh PASS. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01GE3SDvQn5EoxdGufk84zz2
24 lines
956 B
C
24 lines
956 B
C
/* sk_v4_grow.h -- Artemis grows to fill the stick at its first boot
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* (docs/v4.0.0/STICK.md 5a; plan 2026-10-29-stick-5, Task 2).
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*
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* Built only with STARFORTH_V4=1 (Kconfig.kernel).
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*/
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#ifndef STARKERNEL_V4_SK_V4_GROW_H
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#define STARKERNEL_V4_SK_V4_GROW_H
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#include <stdint.h>
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#include "blkio.h"
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/* How far the Artemis partition `art` may grow, in 512-byte sectors: no
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* further than `cap_sectors`, nor than its volume's BAM can track. 0 when
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* `art` holds no STFR v2 volume. Reads only. */
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uint64_t sk_v4_grow_cap_sectors(blkio_dev_t *art, uint64_t cap_sectors);
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/* Grow the volume on `art` to fill its partition: its fence (the Artemis
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* signature, Zuse's genesis marker) moved to the new top, then its header.
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* Metadata only. 1 when grown, 0 when it already fills the partition, -1 on
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* an error -- the old header then still names the old volume, whole. */
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int sk_v4_grow_artemis(blkio_dev_t *art);
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#endif /* STARKERNEL_V4_SK_V4_GROW_H */
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