#! /bin/sh

set -e

version="$1"
vmlinuz_location="$2"

if ! which update-initramfs >/dev/null ; then
  exit 0
fi

# passing the kernel version is required
if [ -z "${version}" ]; then
        echo >&2 "W: initramfs-tools: ${DPKG_MAINTSCRIPT_PACKAGE:-kernel package} did not pass a version number"
        exit 2
fi

# exit if kernel does not need an initramfs
if [ "$INITRD" = 'No' ]; then
        exit 0
fi

# absolute file name of kernel image may be passed as a second argument;
# create the initrd in the same directory
if [  -n "$vmlinuz_location" ]; then
    # Where is the image located? We'll place the initrd there.
    boot=$(dirname "$vmlinuz_location")
    bootarg="-b $boot"
fi


# avoid running multiple times
if [ -n "$DEB_MAINT_PARAMS" ]; then
        eval set -- "$DEB_MAINT_PARAMS"
        if [ -z "$1" ] || [ "$1" != "configure" ]; then
                exit 0
        fi
fi

# we're good - create initramfs.  update runs do_bootloader
INITRAMFS_TOOLS_KERNEL_HOOK=1 update-initramfs -c -t -k "$version" $bootarg