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36b4a7ba55
Snapshots were never useful or used for anything. Many systemd developers that I spoke to at systemd.conf2015, didn't even know they existed, so it is fairly safe to assume that this type can be deleted without harm. The fundamental problem with snapshots is that the state of the system is dynamic, devices come and go, users log in and out, timers fire... and restoring all units to some state from the past would "undo" those changes, which isn't really possible. Tested by creating a snapshot, running the new binary, and checking that the transition did not cause errors, and the snapshot is gone, and snapshots cannot be created anymore. New systemctl says: Unknown operation snapshot. Old systemctl says: Failed to create snapshot: Support for snapshots has been removed. IgnoreOnSnaphost settings are warned about and ignored: Support for option IgnoreOnSnapshot= has been removed and it is ignored http://lists.freedesktop.org/archives/systemd-devel/2015-November/034872.html
284 lines
12 KiB
Bash
284 lines
12 KiB
Bash
# systemctl(1) completion -*- shell-script -*-
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#
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# This file is part of systemd.
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#
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# Copyright 2010 Ran Benita
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#
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# systemd is free software; you can redistribute it and/or modify it
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# under the terms of the GNU Lesser General Public License as published by
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# the Free Software Foundation; either version 2.1 of the License, or
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# (at your option) any later version.
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#
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# systemd is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public License
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# along with systemd; If not, see <http://www.gnu.org/licenses/>.
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__systemctl() {
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local mode=$1; shift 1
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systemctl $mode --full --no-legend "$@"
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}
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__systemd_properties() {
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local mode=$1
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{ __systemctl $mode show --all;
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@rootlibexecdir@/systemd --dump-configuration-items; } |
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while IFS='=' read -r key value; do
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[[ $value ]] && echo "$key"
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done
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}
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__contains_word () {
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local w word=$1; shift
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for w in "$@"; do
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[[ $w = "$word" ]] && return
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done
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}
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__filter_units_by_property () {
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local mode=$1 property=$2 value=$3 ; shift 3
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local units=("$@")
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local props
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IFS=$'\n' read -rd '' -a props < \
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<(__systemctl $mode show --property "$property" -- "${units[@]}")
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for ((i=0; $i < ${#units[*]}; i++)); do
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if [[ "${props[i]}" = "$property=$value" ]]; then
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echo " ${units[i]}"
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fi
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done
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}
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__get_all_units () { { __systemctl $1 list-unit-files; __systemctl $1 list-units --all; } \
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| { while read -r a b; do [[ $a =~ @\. ]] || echo " $a"; done; }; }
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__get_template_names () { __systemctl $1 list-unit-files \
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| { while read -r a b; do [[ $a =~ @\. ]] && echo " ${a%%@.*}@"; done; }; }
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__get_active_units () { __systemctl $1 list-units \
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| { while read -r a b; do echo " $a"; done; }; }
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__get_startable_units () {
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# find startable inactive units
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__filter_units_by_property $mode ActiveState inactive $(
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__filter_units_by_property $mode CanStart yes $(
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__systemctl $mode list-unit-files --state enabled,disabled,static | \
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{ while read -r a b; do [[ $a =~ @\. ]] || echo " $a"; done; }
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__systemctl $mode list-units --state inactive,failed | \
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{ while read -r a b; do echo " $a"; done; } ))
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}
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__get_restartable_units () {
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# filter out masked and not-found
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__filter_units_by_property $mode CanStart yes $(
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__systemctl $mode list-unit-files --state enabled,disabled,static | \
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{ while read -r a b; do [[ $a =~ @\. ]] || echo " $a"; done; }
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__systemctl $mode list-units | \
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{ while read -r a b; do echo " $a"; done; } )
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}
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__get_failed_units () { __systemctl $1 list-units \
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| { while read -r a b c d; do [[ $c == "failed" ]] && echo " $a"; done; }; }
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__get_enabled_units () { __systemctl $1 list-unit-files \
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| { while read -r a b c ; do [[ $b == "enabled" ]] && echo " $a"; done; }; }
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__get_disabled_units () { __systemctl $1 list-unit-files \
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| { while read -r a b c ; do [[ $b == "disabled" ]] && echo " $a"; done; }; }
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__get_masked_units () { __systemctl $1 list-unit-files \
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| { while read -r a b c ; do [[ $b == "masked" ]] && echo " $a"; done; }; }
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__get_all_unit_files () { { __systemctl $1 list-unit-files; } | { while read -r a b; do echo " $a"; done; }; }
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__get_machines() {
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local a b
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{ machinectl list-images --no-legend --no-pager; machinectl list --no-legend --no-pager; } | \
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{ while read a b; do echo " $a"; done; }
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}
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_systemctl () {
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local cur=${COMP_WORDS[COMP_CWORD]} prev=${COMP_WORDS[COMP_CWORD-1]}
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local i verb comps mode
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local -A OPTS=(
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[STANDALONE]='--all -a --reverse --after --before --defaults --failed --force -f --full -l --global
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--help -h --no-ask-password --no-block --no-legend --no-pager --no-reload --no-wall
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--quiet -q --privileged -P --system --user --version --runtime --recursive -r --firmware-setup
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--show-types -i --ignore-inhibitors --plain'
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[ARG]='--host -H --kill-who --property -p --signal -s --type -t --state --job-mode --root
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--preset-mode -n --lines -o --output -M --machine'
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)
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if __contains_word "--user" ${COMP_WORDS[*]}; then
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mode=--user
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elif __contains_word "--global" ${COMP_WORDS[*]}; then
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mode=--user
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else
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mode=--system
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fi
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if __contains_word "$prev" ${OPTS[ARG]}; then
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case $prev in
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--signal|-s)
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comps=$(compgen -A signal)
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;;
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--type|-t)
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comps=$(__systemctl $mode -t help)
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;;
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--state)
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comps=$(__systemctl $mode --state=help)
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;;
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--job-mode)
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comps='fail replace replace-irreversibly isolate
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ignore-dependencies ignore-requirements flush'
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;;
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--kill-who)
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comps='all control main'
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;;
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--root)
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comps=$(compgen -A directory -- "$cur" )
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compopt -o filenames
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;;
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--host|-H)
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comps=$(compgen -A hostname)
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;;
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--property|-p)
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comps=$(__systemd_properties $mode)
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;;
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--preset-mode)
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comps='full enable-only disable-only'
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;;
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--output|-o)
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comps='short short-iso short-precise short-monotonic verbose export json
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json-pretty json-sse cat'
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;;
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--machine|-M)
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comps=$( __get_machines )
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;;
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esac
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COMPREPLY=( $(compgen -W '$comps' -- "$cur") )
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return 0
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fi
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if [[ "$cur" = -* ]]; then
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COMPREPLY=( $(compgen -W '${OPTS[*]}' -- "$cur") )
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return 0
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fi
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local -A VERBS=(
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[ALL_UNITS]='is-active is-failed is-enabled status show cat mask preset help list-dependencies edit set-property'
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[ENABLED_UNITS]='disable'
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[DISABLED_UNITS]='enable'
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[REENABLABLE_UNITS]='reenable'
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[FAILED_UNITS]='reset-failed'
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[STARTABLE_UNITS]='start'
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[STOPPABLE_UNITS]='stop condstop kill try-restart condrestart'
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[ISOLATABLE_UNITS]='isolate'
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[RELOADABLE_UNITS]='reload condreload reload-or-try-restart force-reload'
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[RESTARTABLE_UNITS]='restart reload-or-restart'
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[TARGET_AND_UNITS]='add-wants add-requires'
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[MASKED_UNITS]='unmask'
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[JOBS]='cancel'
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[ENVS]='set-environment unset-environment'
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[STANDALONE]='daemon-reexec daemon-reload default
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emergency exit halt hibernate hybrid-sleep kexec list-jobs
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list-sockets list-timers list-units list-unit-files poweroff
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reboot rescue show-environment suspend get-default
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is-system-running'
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[FILE]='link switch-root'
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[TARGETS]='set-default'
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)
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for ((i=0; i < COMP_CWORD; i++)); do
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if __contains_word "${COMP_WORDS[i]}" ${VERBS[*]} &&
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! __contains_word "${COMP_WORDS[i-1]}" ${OPTS[ARG]}; then
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verb=${COMP_WORDS[i]}
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break
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fi
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done
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if [[ -z $verb ]]; then
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comps="${VERBS[*]}"
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elif __contains_word "$verb" ${VERBS[ALL_UNITS]}; then
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comps=$( __get_all_units $mode )
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compopt -o filenames
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elif __contains_word "$verb" ${VERBS[ENABLED_UNITS]}; then
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comps=$( __get_enabled_units $mode )
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compopt -o filenames
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elif __contains_word "$verb" ${VERBS[DISABLED_UNITS]}; then
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comps=$( __get_disabled_units $mode;
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__get_template_names $mode)
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compopt -o filenames
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elif __contains_word "$verb" ${VERBS[REENABLABLE_UNITS]}; then
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comps=$( __get_disabled_units $mode;
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__get_enabled_units $mode;
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__get_template_names $mode)
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compopt -o filenames
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elif __contains_word "$verb" ${VERBS[STARTABLE_UNITS]}; then
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comps=$( __get_startable_units $mode;
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__get_template_names $mode)
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compopt -o filenames
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elif __contains_word "$verb" ${VERBS[RESTARTABLE_UNITS]}; then
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comps=$( __get_restartable_units $mode;
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__get_template_names $mode)
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compopt -o filenames
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elif __contains_word "$verb" ${VERBS[STOPPABLE_UNITS]}; then
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comps=$( __filter_units_by_property $mode CanStop yes \
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$( __get_active_units $mode ) )
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compopt -o filenames
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elif __contains_word "$verb" ${VERBS[RELOADABLE_UNITS]}; then
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comps=$( __filter_units_by_property $mode CanReload yes \
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$( __get_active_units $mode ) )
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compopt -o filenames
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elif __contains_word "$verb" ${VERBS[ISOLATABLE_UNITS]}; then
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comps=$( __filter_units_by_property $mode AllowIsolate yes \
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$( __get_all_units $mode ) )
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compopt -o filenames
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elif __contains_word "$verb" ${VERBS[FAILED_UNITS]}; then
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comps=$( __get_failed_units $mode )
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compopt -o filenames
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elif __contains_word "$verb" ${VERBS[MASKED_UNITS]}; then
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comps=$( __get_masked_units $mode )
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compopt -o filenames
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elif __contains_word "$verb" ${VERBS[TARGET_AND_UNITS]}; then
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if __contains_word "$prev" ${VERBS[TARGET_AND_UNITS]} \
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|| __contains_word "$prev" ${OPTS[STANDALONE]}; then
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comps=$( __systemctl $mode list-unit-files --type target --all \
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| { while read -r a b; do echo " $a"; done; } )
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else
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comps=$( __get_all_unit_files $mode )
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fi
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compopt -o filenames
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elif __contains_word "$verb" ${VERBS[STANDALONE]}; then
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comps=''
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elif __contains_word "$verb" ${VERBS[JOBS]}; then
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comps=$( __systemctl $mode list-jobs | { while read -r a b; do echo " $a"; done; } )
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elif __contains_word "$verb" ${VERBS[ENVS]}; then
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comps=$( __systemctl $mode show-environment \
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| while read -r line; do echo " ${line%%=*}=";done )
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compopt -o nospace
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elif __contains_word "$verb" ${VERBS[FILE]}; then
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comps=$( compgen -A file -- "$cur" )
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compopt -o filenames
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elif __contains_word "$verb" ${VERBS[TARGETS]}; then
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comps=$( __systemctl $mode list-unit-files --type target --full --all \
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| { while read -r a b; do echo " $a"; done; } )
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fi
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COMPREPLY=( $(compgen -o filenames -W '$comps' -- "$cur") )
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return 0
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}
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complete -F _systemctl systemctl
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