# Dasung integration validation

Development reference and historical context. For current operating instructions, use the [user manual](../README.md). Acceptance applies only to the source and artifacts identified in each record.


[Documentation index](README.md) · [Integration and usage](dasung.md)

Validated on 2026-09-20 on the x86_64 Arch development host. This records the FDS
port of the existing local `dasungd`; it is separate from the historical live
monitor validation in [the imported source](../../rust/dasungd/VALIDATION.md).

This is the original integration record. The subsequent rootfs build, emulated
ARM execution, and integration rerun are recorded in [M1 validation](m1-validation.md).

## Commands completed successfully

```sh
make bootstrap
make smoke-test
make check
make dasung
make dasung-test
```

Bootstrap now fetches the locked workspace dependencies. A fresh empty Cargo
cache had exposed that resolving the new workspace member also affects an offline
build of the dependency-free smoketest; the bootstrap fetch addresses that setup
requirement. The original dependency versions were retained; the workspace lock
adds the smoketest member to the imported controller lock.

## Checks performed

- Static AArch64 ELF validation of both the built daemon and the executable
  extracted from its `aarch64` XBPS package. No dynamic interpreter, shared-library
  requirements, or glibc symbol requirements were present.
- Six imported unit tests: framing/reassembly, malformed streams, parameter and
  IPC validation, saved-setting reload, and exact EDID identity/checksum/clock.
- Pseudo-terminal monitor tests: late attachment, keepalive, fragmented replies,
  invalid settings, saved-setting replay, unplug/replug, duplicate-instance
  exclusion, reply watchdog recovery, restart, and forgetting settings.
- Native s6 execution of the packaged service graph in an isolated container with
  a read-only root and no exposed physical USB or display devices. Startup,
  logging, socket permissions, restart, and clean stop passed with no monitor.
  This used the x86_64 test build of the same source, not ARM emulation.
- Package contents, exact config/profile, mandatory base package selection,
  base boot-bundle membership, and compilation of packaged service sources.
- The original M0 ELF/source/overlay protections and Rust formatting checks.

## Artifact identities

```text
7a3daf7e7beadde7d4b0991a08af04952495e1ec155bd4a2e3605fb903dcc782  out/dasungd
9c33dc3808549016f388f409658abc3ba37ff0b8d05973dcf1d5f9f8dbd89e94  out/packages/fds-dasungd-0.1.0_1.aarch64.xbps
```

Package dependencies are coreutils, execline, s6, s6-rc, and eudev. The static
executable does not add a shared musl, libusb, or libudev runtime dependency.
The packet keepalive/pacing and confirmed 304210 kHz EDID are retained.

Local generated evidence: [build log](../../out/logs/dasung-build-final.log),
[test log](../../out/logs/dasung-test-final.log), and
[artifact manifest](../../out/manifests/dasung-artifacts.sha256). These outputs are
ignored by Git and must be regenerated in a fresh checkout.

## Not verified

There is no complete rootfs, native PID 1 deployment, Pi kernel/initramfs, or
bootable image yet. ARM runtime execution, Pi video/cabling, physical image quality,
early-boot display handoff, and corrected cold-power recovery were not tested.
The workstation's live display service and configuration were not changed.
Saved overrides use volatile `/run` until persistent machine storage is integrated.
The service test is not a boot or shutdown benchmark.