#!/bin/sh

trap 'exec sh' EXIT

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

mount -t proc proc /proc
mount -t devtmpfs devtmpfs /dev || exit
# use -p to avoid "directory exists" error
mkdir -p /dev/pts
# /dev/pts for dropbear
mount -t devpts devpts /dev/pts

while read -r line; do
    case "$line" in
        '#'*) ;;
        *) modprobe $line || exit
    esac
done < /etc/modules

mount -t efivarfs efivarfs /efivars
load-random-seed /efivars/LoaderRandomSeed-4a67b082-0a4c-41cf-b6c7-440b29bb8c4f
umount /efivars

(
ip link set eth0 up
udhcpc -i eth0
# -p 2222 to avoid host key clash
dropbear -p 2222
) >/dev/null 2>&1 &

root=$(findfs UUID=ec8fb072-1200-4275-9494-f6f869187806) || exit
if cryptsetup open --tries 65535 --allow-discards --perf-no_read_workqueue --perf-no_write_workqueue "$root" root; then
    autologin=1
fi
[ -e /dev/mapper/root ] || exit
e2fsck -C 0 -E inode_count_fullmap -p /dev/mapper/root || exit
mount -o nodev /dev/mapper/root /mnt || exit

kill -9 -1

cd /mnt || exit
if [ -n "$autologin" ]; then
    mount -t tmpfs -o mode=755,nodev,nosuid,strictatime tmpfs run || exit
    mkdir -p run/systemd/system/getty.target.wants || exit
    ln -s /dev/null run/systemd/system/getty.target.wants/getty@tty1.service || exit
    ln -s /etc/systemd/system/getty-autologin.service run/systemd/system/getty.target.wants/ || exit
fi
umount -n /dev/pts /dev /proc
exec switch_root . /usr/lib/systemd/systemd