mirror of
https://github.com/falcosecurity/falco.git
synced 2025-06-01 19:25:19 +00:00
97 lines
3.5 KiB
Bash
Executable File
97 lines
3.5 KiB
Bash
Executable File
#!/bin/sh
|
|
#
|
|
# Copyright (C) 2022 The Falco Authors.
|
|
#
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
#
|
|
set -e
|
|
|
|
chosen_driver=
|
|
|
|
case "$1" in
|
|
configure)
|
|
if [ -x /usr/bin/dialog ]; then
|
|
# If dialog is installed, create a dialog to let users choose the correct driver for them
|
|
CHOICE=$(dialog --clear --backtitle "Choose your preferred driver" --title "Falco driver" --menu "Choose one of the following options:" 15 40 4 \
|
|
1 "Don't start" \
|
|
2 "Kmod" \
|
|
3 "eBPF" \
|
|
4 "Plugin" \
|
|
2>&1 >/dev/tty)
|
|
clear
|
|
case $CHOICE in
|
|
1)
|
|
chosen_driver="kmod"
|
|
;;
|
|
2)
|
|
chosen_driver="ebpf"
|
|
;;
|
|
3)
|
|
chosen_driver="plugin"
|
|
;;
|
|
esac
|
|
else
|
|
# Default at old behavior: enable kmod driver
|
|
chosen_driver="kmod"
|
|
fi
|
|
;;
|
|
esac
|
|
|
|
# If needed, try to load/compile the driver through falco-driver-loader
|
|
case "$chosen_driver" in
|
|
"kmod")
|
|
falco-driver-loader module
|
|
;;
|
|
"ebpf")
|
|
falco-driver-loader bpf
|
|
;;
|
|
esac
|
|
|
|
# Based off what debhelper dh_systemd_enable/13.3.4 would have added
|
|
# ref: https://www.debian.org/doc/manuals/debmake-doc/ch05.en.html#debhelper
|
|
|
|
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
|
|
# This will only remove masks created by d-s-h on package removal.
|
|
deb-systemd-helper unmask "falco@kmod.target" >/dev/null || true
|
|
deb-systemd-helper unmask "falco@ebpf.target" >/dev/null || true
|
|
deb-systemd-helper unmask "falco@plugin.target" >/dev/null || true
|
|
|
|
# was-enabled defaults to true, so new installations run enable.
|
|
if [ -n "$chosen_driver" ]; then
|
|
if deb-systemd-helper --quiet was-enabled "falco@$chosen_driver.target"; then
|
|
# Enables the unit on first installation, creates new
|
|
# symlinks on upgrades if the unit file has changed.
|
|
deb-systemd-helper enable "falco@$chosen_driver.target" >/dev/null || true
|
|
else
|
|
# Update the statefile to add new symlinks (if any), which need to be
|
|
# cleaned up on purge. Also remove old symlinks.
|
|
deb-systemd-helper update-state "falco@$chosen_driver.target" >/dev/null || true
|
|
fi
|
|
fi
|
|
fi
|
|
|
|
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
|
|
if [ -d /run/systemd/system ]; then
|
|
systemctl --system daemon-reload >/dev/null || true
|
|
if [ -n "$chosen_driver" ]; then
|
|
if [ -n "$2" ]; then
|
|
_dh_action=restart
|
|
else
|
|
_dh_action=start
|
|
fi
|
|
deb-systemd-invoke $_dh_action "falco@$chosen_driver.target" >/dev/null || true
|
|
fi
|
|
fi
|
|
fi
|