#!/bin/sh -e

export PATH=/usr/sbin:/usr/bin:/sbin:/bin

# shellcheck disable=SC2046
set -- $(cat /proc/cmdline)
while [ $# -ge 1 ]; do
    case "$1" in
    root=nbd:*)
        arg=${1#*:}
        name=${arg#*:}
        host=${arg%:*}
        ;;
    esac
    shift
done

mkdir -p /proc /run /sys
mount -t sysfs sysfs /sys
mount -t proc proc /proc
mount -t tmpfs tmpfs /run

for path in /sys/class/net/*; do
    [ -e "${path}" ] || continue
    ip link set "${path##*/}" up
done
sleep 5
udhcpc -q

@bd-client -N "${name}" -R -p "${host}" /dev/nbd0
mkdir -p /sysroot
mount -o ro -t squashfs /dev/nbd0 /sysroot || nbd-client -c /dev/nbd0

cd /sysroot
mount --move /proc /sysroot/proc
mount --move /sys /sysroot/sys
mount --move /dev /sysroot/dev
mount --move /run /sysroot/run

exec switch_root /sysroot /lib/systemd/systemd