#!/bin/sh

mount -t proc none /proc
mount -t sysfs none /sys
mount -t devtmpfs none /dev

echo "[yerba-initramfs/init] Mounted /dev, /proc, /sys respectively"

mkdir -p /mnt/iso

mount /dev/sr0 /mnt/iso
echo "[yerba-initramfs/init] Mounted /dev/sr0 (ISO root)"

mkdir -p /mnt/root
mount -t squashfs -o loop /mnt/iso/yerba/rootfs.squashfs /mnt/root
echo "[yerba-initramfs/init] Mounted squashfs at /mnt/root"

mount -t tmpfs tmpfs /mnt/overlay
mkdir -p /mnt/overlay/upper /mnt/overlay/work /mnt/overlay/merged
echo "[yerba-initramfs/init] Mounted tmpfs at /mnt/overlay and created upper, work & merged directories"

mount -t overlay overlay -o lowerdir=/mnt/root,upperdir=/mnt/overlay/upper,workdir=/mnt/overlay/work /mnt/overlay/merged
echo "[yerba-initramfs/init] Mounted OverlayFS at /mnt/overlay/merged"

echo "[yerba-initramfs/init] Switching to overlay root..."
exec switch_root /mnt/overlay/merged /sbin/init

echo "[yerba-initramfs/init] switch_root failed, dropping to shell"
exec /bin/sh