name: Normalize Snapd Root Ownership
description: Best-effort repair of root ownership on ephemeral runners before invoking snapd-based build steps. Soft-fails when sudo is unavailable so downstream snapcraft errors remain the authoritative signal.
runs:
  using: composite
  steps:
    - shell: bash
      run: |
        set -euo pipefail
        ROOT_OWNER="$(stat -c '%u:%g' /)"
        echo "Runner root owner: ${ROOT_OWNER}"
        if [ "${ROOT_OWNER}" = "0:0" ]; then
          echo "Root is already 0:0 — snapd canonicalization OK"
          exit 0
        fi
        echo "Attempting to repair / ownership so snapd/systemd path canonicalization accepts this runner"
        if sudo -n chown root:root / 2>/dev/null; then
          echo "Chown succeeded; new owner: $(stat -c '%u:%g' /)"
        else
          echo "::warning::Unable to chown / to root:root (sudo unavailable or passwordless sudo disabled). snapd may fail downstream. Remediation: run this job on a standard ubuntu-latest / ubuntu-24.04 GitHub-hosted runner, or configure the container image so / is owned by 0:0."
        fi