#!/bin/bash
# SPDX-License-Identifier: GPL-2.0-or-later

USAGE="$0 <install|remove> <package> <version> <num_packages>"

if test "$1" = "-h" -o "$1" = "--help"; then
	echo "$USAGE"
	exit 0
fi
if test "$#" -lt 2; then
	echo "$USAGE" >&2
	exit 1
fi

# ulp trigger have problems with bash expanding its arguments. Disable that
# and let it expand the wildcard by itself.
shopt -s nullglob

check_livepatching_env()
{
	[ -z "$PACKAGE" ] && return 0

  echo $PACKAGE

	COMPONENT=${PACKAGE%-livepatches}
	COMPONENT=${COMPONENT^^}
	COMPONENT=${COMPONENT/-/_}
	CONF_VAR_NAME="LIVEPATCH_$COMPONENT"
	eval "$CONF_VAR_NAME"=auto

	# Check if a sysconfig for livepatching exists. If yes, include the file.
	if test -f "/etc/sysconfig/livepatching"; then
		. /etc/sysconfig/livepatching || :
	fi

	return 0
}

do_install()
{
  if test -e /.buildenv; then
    echo "Skipping userspace live patches in buildroot"
    return 0
  fi

  check_livepatching_env || return 0

  # Check if we are running a transactional update. If yes, set the root
  # accordingly.
  if [ "$TRANSACTIONAL_UPDATE" = "true" ] && [ "x$TRANSACTIONAL_UPDATE_ROOT" != "x" ]; then
    ROOT="-R $TRANSACTIONAL_UPDATE_ROOT"
  fi

  ulp trigger $ROOT --recursive -r 100 --timeout 200 --revert-all=target \
    "/usr/lib64/$PACKAGE/$VER/*.so"

  echo "ulp trigger executed."
}

do_remove()
{
	: # reserved for future use
}

if test $# -ne 5; then
	echo 'WARNING: Unexpected number of parameters. Are the live patch RPM scripts compatible with this rpm-helper?' >&2
fi


# Parse first argument (install or remove).
cmd=$1
PACKAGE=$2
VER=$3
TARGET_LIB=$4
NUM_PACKAGES=${5-0}
case "$cmd" in
install|remove)
	do_$cmd
	exit
	;;
*)
	echo "$USAGE" >&2
	exit 1
esac