82 lines
2.8 KiB
Desktop File
Executable File
82 lines
2.8 KiB
Desktop File
Executable File
#!/bin/bash
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# by Vladimir Kudrya
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# https://github.com/Vladimir-csp/
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#
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# This script is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 2 of the License, or
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# (at your option) any later version. See <http://www.gnu.org/licenses/>.
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# This is a replacement for original dbus.service script by Thomas Liske <thomas@fiasko-nw.net>
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# Dbus dependencies are enumerated dynamically and restarted after dbus and systemd daemon reexec
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# enable xtrace if we should be verbose
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if [ "$NR_VERBOSE" = '1' ]; then
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set -x
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fi
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if [ "$(id -ru)" != "0" ]
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then
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echo "Not root, exiting" >&2
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exit 1
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fi
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INIT_EXEC="$(readlink /proc/1/exe)"
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if [ "$(basename "$INIT_EXEC")" != "systemd" ]
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then
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echo "Init system is not systemd ($INIT_EXEC), doing nothing"
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exit 0
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fi
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get_active_deps(){
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# return all dbus dependencies, filter out dbus and DM, leave only active
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{
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systemctl list-dependencies -l --reverse --plain dbus.socket
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systemctl list-dependencies -l --reverse --plain dbus.service
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} | grep -o '[^[:space:]]\+.service' | sort -u | while read SERVICE
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do
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if [ "$SERVICE" != "dbus.service" -a "$SERVICE" != "$DISPLAY_MANAGER" ] && systemctl -q is-active "$SERVICE"
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then
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echo "$SERVICE"
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fi
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done
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}
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# if DM is active, return canonical ID
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DISPLAY_MANAGER="$(systemctl -q is-active display-manager.service && systemctl show --value -p Id display-manager.service)"
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# get dependencies
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ACTIVE_DEPS="$(get_active_deps)"
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# get logind sessions
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SESSIONS="$(loginctl list-sessions --no-legend | grep -o '^[[:space:]]*[0-9]\+' | tr '\n' ' ')"
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cat << EOF
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!!! In $PAUSE seconds dbus restart will be performed !!!
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User sessions to be terminated: $SESSIONS
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Services to be restarted:
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$ACTIVE_DEPS
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$DISPLAY_MANAGER
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EOF
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[ -t 0 ] && read -p "Press Enter to continue > " PRESSENTER
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# prepare list to be a CLI arg
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ACTIVE_DEPS="$(echo "$ACTIVE_DEPS" | tr '\n' ' ')"
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# run restart sequence as transient unit...
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if [ -n "$DISPLAY_MANAGER" ]
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then
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# terminate user sessions, stop DM, restart dbus, reexec systemd, restart dbus dependencies, start DM
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systemd-run -G --unit=restart-dbus sh -c "loginctl terminate-session $SESSIONS ; systemctl stop $DISPLAY_MANAGER ; systemctl restart dbus.service ; sleep 1 ; systemctl daemon-reexec ; sleep 1 ; systemctl restart $ACTIVE_DEPS ; systemctl start $DISPLAY_MANAGER"
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else
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# terminate user sessions, restart dbus, reexec systemd, restart dbus dependencies
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systemd-run -G --unit=restart-dbus sh -c "loginctl terminate-session $SESSIONS ; systemctl restart dbus.service ; sleep 1 ; systemctl daemon-reexec ; sleep 1 ; systemctl restart $ACTIVE_DEPS"
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fi
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# restart sequence runs as a unit, so it is possible to view its output in the log if, any:
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# journalctl -u restart-dbus
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