ISO/archiso/initcpio/hooks/archiso_pxe_nbd

#!/bin/ash
#
# SPDX-License-Identifier: GPL-3.0-or-later

run_earlyhook() {
    # shellcheck disable=SC2154
    # defined via initcpio's parse_cmdline()
    if [ -n "${ip}" ] && [ -n "${archiso_nbd_srv}" ]; then
        # Module autoloading like with loop devices does not work, doing manually...
        modprobe nbd 2> /dev/null
    fi
}

run_hook() {
    if [ -n "${ip}" ] && [ -n "${archiso_nbd_srv}" ]; then

        archiso_nbd_srv=$(eval echo "${archiso_nbd_srv}")
        [ -z "${archiso_nbd_name}" ] && archiso_nbd_name="archiso"

        export mount_handler="archiso_pxe_nbd_mount_handler"
    fi
}

archiso_pxe_nbd_mount_handler () {
    newroot="${1}"

    msg ":: Waiting for boot device..."
    while ! poll_device /dev/nbd0 30; do
        echo "ERROR: boot device didn't show up after 30 seconds..."
        echo "   Falling back to interactive prompt"
        echo "   You can try to fix the problem manually, log out when you are finished"
        launch_interactive_shell
    done

    msg ":: Setup NBD from ${archiso_nbd_srv} at /dev/nbd0"
    if [ "${copytoram}" != "n" ]; then
        nbd-client "${archiso_nbd_srv}" -N "${archiso_nbd_name}" /dev/nbd0
        copytoram="y"
    else
        nbd-client "${archiso_nbd_srv}" -N "${archiso_nbd_name}" -systemd-mark -persist /dev/nbd0
    fi

    export archisodevice=/dev/nbd0

    archiso_mount_handler "${newroot}"

    if [ "${copytoram}" = "y" ]; then
        msg ":: Disconnect NBD from ${archiso_nbd_srv} at /dev/nbd0"
        nbd-client -d /dev/nbd0
    fi
}

# vim: set ft=sh: