archiso/hooks/archiso_pxe_nbd


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# vim: set ft=sh:
run_hook () {
    local line i address netmask gateway dns0 dns1 rootserver rootpath filename

    : > /ip_opts

    if [ -n "${ip}" ]; then
        if [ -n "${BOOTIF}" ]; then
            bootif_mac=${BOOTIF#01-}
            bootif_mac=${bootif_mac//-/:}
            bootif_dev=$(grep -l $bootif_mac /sys/class/net/*/address)
            bootif_dev=${bootif_dev#/sys/class/net/}
            bootif_dev=${bootif_dev%/address}
            ip="$ip::$bootif_dev"
        fi

        # setup network and save some values
        ipconfig "ip=${ip}" | while read line; do
            # echo ":: ${line}"
            if [ "${line#"IP-Config:"}" != "${line}" ]; then
                continue
            fi
            line="$(echo ${line} | sed -e 's/ :/:/g;s/: /=/g')"
            for i in ${line}; do
                case "${i}" in
                    address=*)
                        echo "${i}" >> /ip_opts
                        ;;
                    netmask=*)
                        echo "${i}" >> /ip_opts
                        ;;
                    gateway=*)
                        echo "${i}" >> /ip_opts
                        ;;
                    dns0=*)
                        echo "${i}" >> /ip_opts
                        ;;
                    dns1=*)
                        echo "${i}" >> /ip_opts
                        ;;
                    rootserver=*)
                        echo "${i}" >> /ip_opts
                        ;;
                    rootpath=*)
                        echo "${i}" >> /ip_opts
                        ;;
                esac
            done
        done

        . /ip_opts

        echo "IP-Config: ${address}/${netmask}"
        echo "IP-Config: gw: ${gateway}    dns0: ${dns0}    dns1: ${dns1}"

        nbdserver=${rootserver}

        mount_handler="archiso_pxe_nbd_mount_handler"
    fi
}

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

    # Module autoloading like with loop devices does not work, doing manually...
    modprobe nbd 2> /dev/null
    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 ${nbdserver} at /dev/nbd0"
    if [ "${copytoram}" = "y" ]; then
        nbd-client ${nbdserver} -N archiso /dev/nbd0
    else
        nbd-client ${nbdserver} -N archiso /dev/nbd0 -persist
    fi

    archisodevice=/dev/nbd0

    archiso_mount_handler ${newroot}

    if [ "${copytoram}" = "y" ]; then
        msg "::: Disconnect NBD from ${nbdserver} at /dev/nbd0"
        nbd-client -d /dev/nbd0
    else
        pidof nbd-client > /run/nbd_client.pid
    fi
}