linux/debian/hyperv-daemons.preinst

#!/bin/sh
set -e

have_systemd=1
[ -d /run/systemd/system ] || have_systemd=0

case "$1" in
upgrade )
    services='kvp vss'
    if dpkg --compare-versions "$2" lt '6.10~rc6-1~exp1' ; then
        services="fcopy ${services}"
    fi
    for i in ${services} ; do
        init_service="hyperv-daemons.hv-$i-daemon"
        systemd_unit="${init_service}.service"
        if [ ${have_systemd} = 1 ] ; then
            systemctl stop "${systemd_unit}" 2>/dev/null || true
        fi
        deb-systemd-helper purge "${systemd_unit}" || true
        invoke-rc.d --skip-systemd-native "${init_service}" stop || true
        update-rc.d "${init_service}" remove || true
    done ; unset services i init_service systemd_unit
;;
esac

unset have_systemd

#DEBHELPER#

exit 0