Commit Graph

3 Commits

Author SHA1 Message Date
Daniel Samson c4f16a5448
build: the unix paths retire — configuration, logs, and volumes move into the danos tree
/etc/init.csv and /etc/devices.csv become /system/configuration/*.csv (the
repo's etc/ moves to system/configuration/, mirroring the runtime tree),
/var/log becomes /system/logs, and /mnt/usb becomes /volumes/usb. The
kernel VFS gains a carve-out so FAT may serve exactly /system/configuration
and /system/logs beneath the initrd-backed /system while /system and /test
themselves stay unshadowable; FAT's single /var mount splits into those two
rewritten mounts. The kvfs readdir check learns /system's third child and
the ramdisk spawn sweep skips the configuration tree.

Suite 106/106.
2026-07-31 19:41:35 +01:00
Daniel Samson 081ba1d74e init: data-driven boot service list via /etc/init.csv
Replace init's hardcoded boot_services array with an authoritative,
human-readable service list read at boot, mirroring /etc/devices.csv. Each row
is a service binary path followed by its argv; startup order is file order,
shutdown the reverse. There is no hardcoded fallback — a missing file starts
nothing (the no-ramdisk isolation behavior).

- library/csv: shared CSV helpers (comment strip, field iteration) with unit
  tests; device-registry is refactored onto them so both /etc/*.csv files parse
  through one place.
- init reads /etc/init.csv into fixed-max static tables (the same pattern as the
  device registry) and passes each row's argv straight to spawnSupervised. This
  also makes boot-time modes (e.g. device-manager test-usb-restart) expressible
  as data rather than hardcoded.
- Diagnose mode (-Ddiagnose omits the display stack) becomes build-time file
  selection between etc/init.csv and etc/init-diagnose.csv, so init carries no
  comptime service logic; the diagnose build option is dropped from init.
- build.zig: csv module wired; /etc/init.csv bundled into the initrd; the
  device-registry tests move to a dedicated block since they now import csv.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KJqSiLLchDUUCoXn5jsiwd
2026-07-26 17:13:51 +01:00
Daniel Samson 203528c8a7 device-manager: data-driven driver matching via /etc/devices.csv
Replace the three hardcoded switch tables (pciDriverForIdentity, hidDriverFor,
usbDriverForIdentity) with an authoritative, human-readable device registry the
manager reads at boot. Matching is most-specific-wins across
base/subclass/prog_if/vendor/device/subsystem/hid, so a precise vendor:device
rule and a generic class rule coexist; an unmatched device is logged, never
guessed. This resolves docs' "matching stays code until the third bus".

- ABI: child_added and DeviceDescriptor gain vendor/device/subsystem; child_added
  gains a bus discriminator (BusKind) so PCI and USB class triples match against
  the right namespace.
- pci-bus reads vendor/device (config 0x00) and subsystem (0x2C, type-0) and
  reports them.
- library/device/registry: freestanding CSV parser + matchDriver() with
  specificity scoring; 5 unit tests wired into `zig build test`.
- etc/devices.csv bundled into the initrd; the kernel serves /etc directly, so
  the manager reads it before any filesystem service is up (fat starts later).
- virtio-gpu: drop the now-redundant post-spawn 1AF4:1050 re-confirm, since the
  registry binds this driver by exact identity.
- Remove the orphaned system/drivers/display driver (unreferenced by build or
  registry).
- docs: new devices-csv.md; device-manager.md "matching stays code" resolved.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KJqSiLLchDUUCoXn5jsiwd
2026-07-26 16:43:13 +01:00