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#!/usr/bin/bash

command -v getarg > /dev/null || . /lib/dracut-lib.sh
command -v get_fcoe_boot_mac > /dev/null || . /lib/uefi-lib.sh
command -v set_ifname > /dev/null || . /lib/net-lib.sh

print_fcoe_uefi_conf() {
    local mac dev vlan
    mac=$(get_fcoe_boot_mac "$1")
    [ -z "$mac" ] && return 1
    dev=$(set_ifname fcoe "$mac")
    vlan=$(get_fcoe_boot_vlan "$1") || return 1
    case "$vlan" in
        "0") ;;

        '')
            return 1
            ;;
        [0-9]*)
            printf "%s\n" "vlan=$dev.$vlan:$dev"
            dev="$dev.$vlan"
            ;;
        *)
            printf "%s\n" "vlan=$vlan:$dev"
            dev="$vlan"
            ;;
    esac
    # fcoe=eth0:nodcb
    printf "fcoe=%s\n" "$dev:nodcb"
    return 0
}

for i in /sys/firmware/efi/efivars/FcoeBootDevice-*; do
    [ -e "$i" ] || continue
    print_fcoe_uefi_conf "$i" > /etc/cmdline.d/40-fcoe-uefi.conf && break
done