#!/bin/sh
#
# Packages that install kernels or kernel-modules create a flag
#
#   /run/regenerate-initrd/<kernel image>
# 
# to have the initrd for <kernel image> generated, or
#
#   /run/regenerate-initrd/all
#
# to have all initrds generated. This script is called from posttrans
# and takes care of generating the initrds

: ${DRACUT:=/usr/bin/dracut}
if [ ! -x "$DRACUT" ]; then
    echo "${0##*/}: dracut is not installed, not rebuilding the initrd" >&2
    exit 0
fi

dir=/run/regenerate-initrd

if ! test -d "$dir"; then
	exit 0
fi
for f in "$dir"/*; do
	case $f in
	    "$dir/*")
		[ -e "$f" ] || break;;
	esac
	# check if we are in a build chroot
	if ! [  -f /etc/fstab -a ! -e /.buildenv -a -x "$DRACUT" ] ; then
		echo "Please run \"$DRACUT -f --regenerate-all\" as soon as your system is complete." >&2
		rm "$dir"/*
		exit 0
	fi
	break
done

if test -e "$dir/all"; then
	rm "$dir"/*
	"$DRACUT" -f --regenerate-all
	exit
fi
err=0
for f in "$dir"/*; do
	case $f in
	    "$dir/*")
		[ -e "$f" ] || break;;
	esac
	rm "$f"
	image=${f##*/}
	kver=${image#*-}
	if ! test -e "/boot/$image"; then
		echo "$0: /boot/$image does not exist, initrd won't be generated"
		continue
	fi
	if ! "$DRACUT" -f --kver "$kver"; then
		err=$?
	fi
done
exit $err
