#!/bin/sh
set -e

# If the live image is generated on a system that is not booted via UEFI,
# include the UEFI kernel module to avoid a message when booting with
# UEFI enabled.
# If the live image is generated on a system that is booted via UEFI,
# still include this line, to make it easier to reproduce the live image
# independent of the system that generated it.
#
# See also https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1110729

# It is mdadm that attempts to mount efivarfs
# mdadm only adds the efivarfs modules when booted via UEFI
if [ ! -e /usr/share/initramfs-tools/hooks/mdadm ];
then
  exit 0
fi

# Only apply the fix when the file is as expected
# - the first line inside an if-statement
if grep  "force_load efivarfs" -B 1 /usr/share/initramfs-tools/hooks/mdadm | grep -q "then";
then
  # This patch always adds the efivarfs modules:
  # - Delete the existing line to load the module
  # - Load the module before the comment
  sed -i -e '/force_load efivarfs/d;s/# load efivars for Intel RST/force_load efivarfs || true\n&/' /usr/share/initramfs-tools/hooks/mdadm

  echo "P: $(basename $0) Reproducible hook has been applied"
fi