mirror of
https://github.com/falcosecurity/falco.git
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fe50ac22ee
See https://github.com/falcosecurity/evolution/issues/318 Signed-off-by: Leonardo Grasso <me@leonardograsso.com>
101 lines
3.8 KiB
Bash
Executable File
101 lines
3.8 KiB
Bash
Executable File
#!/bin/sh
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# SPDX-License-Identifier: Apache-2.0
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#
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# Copyright (C) 2023 The Falco Authors.
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#
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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chosen_driver=
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# Every time we call this script we want to stat from a clean state.
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echo "[POST-INSTALL] Disable all possible 'falco' services:"
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systemctl --system stop 'falco-kmod.service' || true
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systemctl --system stop 'falco-bpf.service' || true
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systemctl --system stop 'falco-modern-bpf.service' || true
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systemctl --system stop 'falco-custom.service' || true
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systemctl --system stop 'falcoctl-artifact-follow.service' || true
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systemctl --system disable 'falco-kmod.service' || true
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systemctl --system disable 'falco-bpf.service' || true
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systemctl --system disable 'falco-modern-bpf.service' || true
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systemctl --system disable 'falco-custom.service' || true
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systemctl --system disable 'falcoctl-artifact-follow.service' || true
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# unmask falcoctl if it was masked
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systemctl --system unmask falcoctl-artifact-follow.service || true
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if [ "$1" = "configure" ]; then
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if [ -x /usr/bin/dialog ] && [ "${FALCO_FRONTEND}" != "noninteractive" ]; then
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# If dialog is installed, create a dialog to let users choose the correct driver for them
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CHOICE=$(dialog --clear --title "Falco drivers" --menu "Choose your preferred driver:" 12 55 4 \
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1 "Manual configuration (no unit is started)" \
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2 "Kmod" \
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3 "eBPF" \
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4 "Modern eBPF" \
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2>&1 >/dev/tty)
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case $CHOICE in
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2)
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chosen_driver="kmod"
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;;
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3)
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chosen_driver="bpf"
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;;
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4)
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chosen_driver="modern-bpf"
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;;
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esac
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if [ -n "$chosen_driver" ]; then
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CHOICE=$(dialog --clear --title "Falcoctl" --menu "Do you want to follow automatic ruleset updates?" 10 40 2 \
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1 "Yes" \
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2 "No" \
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2>&1 >/dev/tty)
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case $CHOICE in
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2)
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# we don't want falcoctl enabled, we mask it
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systemctl --system mask falcoctl-artifact-follow.service || true
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;;
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esac
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fi
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clear
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fi
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fi
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set -e
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echo "[POST-INSTALL] Trigger deamon-reload:"
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systemctl --system daemon-reload || true
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# If needed, try to load/compile the driver through falco-driver-loader
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case "$chosen_driver" in
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"kmod")
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# Only compile for kmod, in this way we use dkms
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echo "[POST-INSTALL] Call 'falco-driver-loader --compile module':"
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falco-driver-loader --compile module
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;;
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"bpf")
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echo "[POST-INSTALL] Call 'falco-driver-loader bpf':"
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falco-driver-loader bpf
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;;
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esac
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if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
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if [ -n "$chosen_driver" ]; then
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# we do this in 2 steps because `enable --now` is not always supported
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echo "[POST-INSTALL] Enable 'falco-$chosen_driver.service':"
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systemctl --system enable "falco-$chosen_driver.service" || true
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echo "[POST-INSTALL] Start 'falco-$chosen_driver.service':"
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systemctl --system start "falco-$chosen_driver.service" || true
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fi
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fi
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