systemd/systemd-update-helper

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#!/usr/bin/env bash
# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
# SPDX-License-Identifier: LGPL-2.1-or-later
#
# This helper is aimed at being used by the systemd rpm macros only.
#
set -eu
set -o pipefail
command="${1:?}"
shift
command -v systemctl >/dev/null || exit 0
case "$command" in
mark-install-system-units)
mkdir -p /run/systemd/rpm/needs-preset
for unit in "$@" ; do
if [ ! -e /usr/lib/systemd/system/"$unit" ]; then
touch /run/systemd/rpm/needs-preset/"$unit"
fi
done
;;
install-system-units)
units=()
for unit in "$@" ; do
if [ -e /run/systemd/rpm/needs-preset/"$unit" ]; then
rm /run/systemd/rpm/needs-preset/"$unit"
units+=("$unit")
fi
done
[ ${#units[*]} -gt 0 ] &&
systemctl --no-reload preset "${units[@]}"
;;
mark-install-user-units)
mkdir -p /run/systemd/rpm/needs-user-preset
for unit in "$@" ; do
if [ ! -e /usr/lib/systemd/user/"$unit" ]; then
touch /run/systemd/rpm/needs-user-preset/"$unit"
fi
done
;;
install-user-units)
units=()
for unit in "$@" ; do
if [ -e /run/systemd/rpm/needs-user-preset/"$unit" ]; then
rm /run/systemd/rpm/needs-user-preset/"$unit"
units+=("$unit")
fi
done
[ ${#units[*]} -gt 0 ] &&
systemctl --no-reload preset --global "$@" || :
;;
remove-system-units)
if [ -d /run/systemd/system ]; then
systemctl --no-reload disable --now --no-warn "$@"
else
systemctl --no-reload disable --no-warn "$@"
fi
;;
remove-user-units)
systemctl --global disable --no-warn "$@"
[ -d /run/systemd/system ] || exit 0
users=$(systemctl list-units 'user@*' --legend=no | sed -n -r 's/.*user@([0-9]+).service.*/\1/p')
for user in $users; do
SYSTEMD_BUS_TIMEOUT=15s \
systemctl --user -M "$user@" disable --now --no-warn "$@" &
done
wait
;;
mark-restart-system-units)
[ -d /run/systemd/system ] || exit 0
for unit in "$@"; do
systemctl set-property "$unit" Markers=+needs-restart &
done
wait
;;
mark-restart-user-units)
[ -d /run/systemd/system ] || exit 0
users=$(systemctl list-units 'user@*' --legend=no | sed -n -r 's/.*user@([0-9]+).service.*/\1/p')
for user in $users; do
for unit in "$@"; do
SYSTEMD_BUS_TIMEOUT=15s \
systemctl --user -M "$user@" set-property "$unit" Markers=+needs-restart &
done
done
wait
;;
system-reload-restart|system-reload|system-restart)
if [ -n "$*" ]; then
echo >&2 "Unexpected arguments for '$command': $*"
exit 2
fi
[ -d /run/systemd/system ] || exit 0
if [[ "$command" =~ reload ]]; then
systemctl daemon-reload
fi
if [[ "$command" =~ restart ]]; then
systemctl reload-or-restart --marked
fi
;;
user-reexec)
if [ -n "$*" ]; then
echo >&2 "Unexpected arguments for '$command': $*"
exit 2
fi
[ -d /run/systemd/system ] || exit 0
# Reexecute user manager instances (if any). It is asynchronous but it
# shouldn't be a problem in practice because systemd main package is not
# shipping any user services currently. A problem would arise only if a
# new version of a user service relied on an option that would be only
# understood by the latest version of the user manager and the user unit
# would be restarted before the user manager get reexecuted.
systemctl kill --kill-who=main --signal=SIGRTMIN+25 "user@*.service"
;;
user-reload-restart|user-reload|user-restart)
if [ -n "$*" ]; then
echo >&2 "Unexpected arguments for '$command': $*"
exit 2
fi
[ -d /run/systemd/system ] || exit 0
users=$(systemctl list-units 'user@*' --legend=no | sed -n -r 's/.*user@([0-9]+).service.*/\1/p')
if [[ "$command" =~ reload ]]; then
for user in $users; do
SYSTEMD_BUS_TIMEOUT=15s \
systemctl --user -M "$user@" daemon-reload &
done
wait
fi
if [[ "$command" =~ restart ]]; then
for user in $users; do
SYSTEMD_BUS_TIMEOUT=15s \
systemctl --user -M "$user@" reload-or-restart --marked &
done
wait
fi
;;
*)
echo >&2 "Unknown verb '$command'"
exit 3
;;
esac