#!/bin/sh
PREREQ=""
prereqs()
{
  echo "$PREREQ"
}
case $1 in
# get pre-requisites
prereqs)
  prereqs
  exit 0
  ;;
esac
cmdline=$(cat /proc/cmdline)
for x in $cmdline; do
  value=${x#*=}
  case ${x} in
    root=*) value_loop_check=${value#*loop}
      if [ x$value_loop_check != x$value ]
        then loop_dev=${value%p*}
        loop_part_num=${value##*p}
        else echo "Root device is not a loop device. loopboot hook will be terminated."; return
      fi ;;
    loop_file_path=*) loop_file_path=$value ;;
    loop_dev_path=*) loop_dev_path=$value ;;
    loop_dev_uuid=*) loop_dev_uuid=$value ;;
  esac
done
if [ -z $loop_file_path ] || ([ -z $loop_dev_path ] && [ -z $loop_dev_uuid ])
  then echo "Either loop_file_path or loop_dev_path/loop_dev_uuid parameter does not specified. loopboot hook will be terminated."; return
fi
modprobe loop max_part=64 max_loop=8
for n in 1 2 3 4 5 6 7 8 9 10; do
  if [ ! -z $loop_dev_uuid ]; then
    loop_dev_path=$(findfs UUID=$loop_dev_uuid)
  fi
  test_usb_ready=$(ls $loop_dev_path 2>&1)
  if [ "$loop_dev_path" != "$test_usb_ready" ]; then
    echo "wait for $loop_dev_path ($loop_dev_uuid): $n"
    sleep 1
  else
    break
  fi
done
loop_dev_type=$(blkid -s TYPE -o value $loop_dev_path)
if [ ! -d /host ]; then
  mkdir /host
fi
if [ "$loop_dev_type" != "ntfs" ]
  then mount -t $loop_dev_type $loop_dev_path /host; echo "mount -t $loop_dev_type $loop_dev_path /host"; echo "mounted using mount";
  else ntfs-3g $loop_dev_path /host; echo "mounted using ntfs-3g";
fi
losetup $loop_dev /host$loop_file_path

#!/bin/sh
cp -p /usr/sbin/findfs "$DESTDIR/bin/findfs"

update-initramfs -c -k all

\EFI\boot\bootx64.efi
\EFI\boot\grubx64.efi
\boot\grub\x86_64-efi\probe.mod

\EFI\boot\bootx64.efi
\EFI\boot\grubx64.efi
\EFI\debian\x86_64-efi\probe.mod

menuentry "vhdUUID" {
  insmod probe
  set vhd_name="/debefi.vhd"
  search --no-floppy --set=vhd_dev --file $vhd_name
  probe -u $vhd_dev --set=vhd_uuid
  loopback loop ($vhd_dev)$vhd_name
  linux  (loop,gpt2)/boot/vmlinuz-4.19.0-14-amd64 root=/dev/loop0p2 rw loop_file_path=$vhd_name loop_dev_uuid=$vhd_uuid
  initrd (loop,gpt2)/boot/initrd.img-4.19.0-14-amd64
}

menuentry "ms" {
  chainloader /EFI/boot/ms.efi
}