File ignition-suse-generator of Package ignition

#!/bin/bash

set -e

# Generators don't have logging right now
# https://github.com/systemd/systemd/issues/15638
exec 1>/dev/kmsg; exec 2>&1

UNIT_DIR="${1:-/tmp}"

cmdline=( $(</proc/cmdline) )
cmdline_arg() {
    local name="$1" value="$2"
    for arg in "${cmdline[@]}"; do
        if [[ "${arg%%=*}" == "${name}" ]]; then
            value="${arg#*=}"
        fi
    done
    echo "${value}"
}

add_requires() {
    local name="$1"; shift
    local target="$1"; shift
    local requires_dir="${UNIT_DIR}/${target}.requires"
    mkdir -p "${requires_dir}"
    ln -sf "../${name}" "${requires_dir}/${name}"
}

add_requires ignition-complete.target firstboot.target
add_requires ignition-diskful.target ignition-complete.target
# TODO: Add support for ignition-subsequent.target, when needed?

echo "PLATFORM_ID=$(cmdline_arg ignition.platform.id)" > /run/ignition.env

. /run/ignition.env

add_requires ignition-mount-initrd-fstab.service ignition-files.service
add_requires ignition-umount-initrd-fstab.service ignition-files.service
add_requires ignition-enable-network.service ignition-fetch.service

if [ -z "${PLATFORM_ID}" ]; then
    platform="metal"
    detectedvirt="$(systemd-detect-virt || true)"
    case "${detectedvirt}" in
       *vmware*)
            if modinfo -F name vmw_vsock_virtio_transport >/dev/null; then
                platform="vmware"
            fi
            ;;
        *oracle*)
            if modinfo -F name vboxguest >/dev/null; then
                platform="virtualbox"
            fi
            ;;
        *kvm*|*qemu*)
            if modinfo -F name qemu_fw_cfg >/dev/null; then
                platform="qemu"
            fi
            ;;
    esac
    echo "PLATFORM_ID=${platform}" > /run/ignition.env
fi