GKI_KernelSU_SUSFS/.github/actions/set-kernel-config/action.yml

# .github/actions/set-kernel-config/action.yml
name: Set Kernel Config
description: Enables kernel configs — handles =y, =n, "not set", missing, and arbitrary values

inputs:
  configs:
    description: |
      Newline-separated list of configs to set.
      Plain name defaults to =y. Supply a value for anything else.
      Examples:
        CONFIG_PID_NS
        CONFIG_IP_SET_MAX=65534
        CONFIG_LOG_BUF_SHIFT=17
    required: true
  defconfig:
    description: Path to the defconfig file
    required: true
  fragment:
    description: Path to the .config fragment file (missing configs land here)
    required: true

runs:
  using: composite
  steps:
    - name: Apply configs
      shell: bash
      run: |
        DEFCONFIG="${{ inputs.defconfig }}"
        FRAGMENT="${{ inputs.fragment }}"

        touch "${FRAGMENT}"

        set_config() {
          local input="$1"

          # Split name=value — default to =y if no value supplied
          if [[ "$input" == *"="* ]]; then
            local config="${input%%=*}"
            local value="${input#*=}"
          else
            local config="$input"
            local value="y"
          fi

          if grep -q "^${config}=${value}$" "${DEFCONFIG}"; then
            echo "[SKIP]  ${config} already =${value} in defconfig"

          elif grep -q "^${config}=" "${DEFCONFIG}"; then
            # Present but wrong value — replace it
            sed -i "s/^${config}=.*/${config}=${value}/" "${DEFCONFIG}"
            echo "[FIX]   ${config} had wrong value → updated to =${value} in defconfig"

          elif grep -q "# ${config} is not set" "${DEFCONFIG}"; then
            sed -i "s/# ${config} is not set/${config}=${value}/" "${DEFCONFIG}"
            echo "[FIX]   ${config} was 'not set' → set to =${value} in defconfig"

          else
            if ! grep -q "^${config}=${value}$" "${FRAGMENT}"; then
              echo "${config}=${value}" >> "${FRAGMENT}"
              echo "[FRAG]  ${config} not found → added =${value} to fragment"
            else
              echo "[SKIP]  ${config} already =${value} in fragment"
            fi
          fi
        }

        while IFS= read -r line; do
          # Strip whitespace, skip blanks and comments
          line="$(echo "$line" | tr -d '[:space:]')"
          [[ -z "$line" || "$line" == \#* ]] && continue
          set_config "$line"
        done <<< "${{ inputs.configs }}"