#!/bin/sh
OLDPWD="$PWD"
cd "$(dirname "$0")"
BUSYBOX_FS="$(realpath ../busybox/rootfs)"
OVERLAY_FS="$(realpath ../rootfs)"
cd "$OLDPWD"

# change into the (mounted) target rootfs folder
cd "$1"

# scaffold folders
for dir in bin dev etc home lib mnt opt proc root run sbin srv sys tmp usr var ; do
	mkdir -p "$dir"
done

# create special devices
! [ -c dev/mem ] && mknod dev/mem c 1 1
! [ -c dev/null ] && mknod dev/null c 1 3
! [ -c dev/random ] && mknod dev/random c 1 8
! [ -c dev/urandom ] && mknod dev/urandom c 1 9
! [ -c dev/zero ] && mknod dev/zero c 1 5

# copy busybox files and overlay files
CPFLAGS='--no-dereference --recursive --preserve=mode,timestamps,links --no-preserve=owner'
cp $CPFLAGS "$BUSYBOX_FS/." .
cp $CPFLAGS "$OVERLAY_FS/." .

# setuid busybox
chmod a=xrs,u+w bin/busybox

# # create /etc/passwd
# if ! [ -e etc/passwd ] ; then
# 	# TODO: add root to a group
# 	echo "root:x:0:0::/root:/bin/sh" > etc/passwd
# fi
# # and /etc/shadow
# if ! [ -e etc/shadow ] ; then
# 	echo "root:$(mkpasswd alpine):::::::" > etc/shadow
# fi
#