tinyramfs/init

#!/usr/bin/busybox sh

# debugging
set -x

# install busybox
/usr/bin/busybox --install -s /usr/bin

panic() { echo "bruh moment :(" && sh; }

# silence is golden
#echo 0 > /proc/sys/kernel/printk

# check config
[ -f /config ] && . /config || panic

# mount pseudofs's
mount -t proc none /proc
mount -t sysfs none /sys
mount -t devtmpfs none /dev

# setup mdev
#echo "/bin/mdev" >/proc/sys/kernel/hotplug
#mdev -s

# TODO parse /proc/cmdline

# load drivers
modprobe -a $drivers

# find rootfs
# TODO busybox findfs doesn't support PART{UUID,LABEL}.
root="$(findfs $root)" || panic
[ -n "$rootflags" ] && mountargs="$rootflags"
[ -n "$rootfstype" ] && mountargs="$mountargs -t $rootfstype"

# mount rootfs
mount $mountargs "$root" "/mnt/root" || panic

# clean up
umount "/dev"
umount "/sys"
umount "/proc"

# boot system
echo SUCCESS
exec switch_root "/mnt/root" "/sbin/init"