shell-completion/bash/systemd-analyze

   1 # systemd-analyze(1) completion                      -*- shell-script -*-
   2 # SPDX-License-Identifier: LGPL-2.1-or-later
   3 #
   4 # This file is part of systemd.
   5 #
   6 # Copyright © 2010 Ran Benita
   7 #
   8 # systemd is free software; you can redistribute it and/or modify it
   9 # under the terms of the GNU Lesser General Public License as published by
  10 # the Free Software Foundation; either version 2.1 of the License, or
  11 # (at your option) any later version.
  12 #
  13 # systemd is distributed in the hope that it will be useful, but
  14 # WITHOUT ANY WARRANTY; without even the implied warranty of
  15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16 # General Public License for more details.
  17 #
  18 # You should have received a copy of the GNU Lesser General Public License
  19 # along with systemd; If not, see <http://www.gnu.org/licenses/>.
  20
  21 __contains_word () {
  22     local w word=$1; shift
  23     for w in "$@"; do
  24         [[ $w = "$word" ]] && return
  25     done
  26 }
  27
  28 __get_machines() {
  29     local a b
  30     machinectl list --full --no-legend --no-pager | { while read a b; do echo " $a"; done; };
  31 }
  32
  33 __get_services() {
  34     systemctl list-units --no-legend --no-pager --plain -t service --all $1 | \
  35         { while read -r a b c; do [[ $b == "loaded" ]]; echo " $a"; done }
  36 }
  37
  38 __get_syscall_sets() {
  39     local line
  40     systemd-analyze syscall-filter --no-pager | while IFS= read -r line; do
  41         if [[ $line == @* ]]; then
  42             printf '%s\n' "$line"
  43         fi
  44     done
  45 }
  46
  47 _systemd_analyze() {
  48     local i verb comps mode
  49     local cur=${COMP_WORDS[COMP_CWORD]} prev=${COMP_WORDS[COMP_CWORD-1]} words cword
  50
  51     local -A OPTS=(
  52         [STANDALONE]='-h --help --version --system --user --global --order --require --no-pager
  53                              --man=no --generators=yes'
  54         [ARG]='-H --host -M --machine --fuzz --from-pattern --to-pattern --root'
  55     )
  56
  57     local -A VERBS=(
  58         [STANDALONE]='time blame plot dump unit-paths exit-status calendar timestamp timespan'
  59         [CRITICAL_CHAIN]='critical-chain'
  60         [DOT]='dot'
  61         [VERIFY]='verify'
  62         [SECCOMP_FILTER]='syscall-filter'
  63         [CAT_CONFIG]='cat-config'
  64         [SECURITY]='security'
  65         [CONDITION]='condition'
  66     )
  67
  68     local CONFIGS='systemd/bootchart.conf systemd/coredump.conf systemd/journald.conf
  69                        systemd/journal-remote.conf systemd/journal-upload.conf systemd/logind.conf
  70                        systemd/resolved.conf systemd/networkd.conf systemd/resolved.conf
  71                        systemd/sleep.conf systemd/system.conf systemd/timedated.conf
  72                        systemd/timesyncd.conf systemd/user.conf udev/udev.conf'
  73
  74     _init_completion || return
  75
  76     for ((i=0; i < COMP_CWORD; i++)); do
  77         if __contains_word "${COMP_WORDS[i]}" ${VERBS[*]} &&
  78                 ! __contains_word "${COMP_WORDS[i-1]}" ${OPTS[ARG]}; then
  79             verb=${COMP_WORDS[i]}
  80             break
  81         fi
  82     done
  83
  84     if __contains_word "$prev" ${OPTS[ARG]}; then
  85         case $prev in
  86             --host|-H)
  87                 comps=$(compgen -A hostname)
  88                 ;;
  89             --machine|-M)
  90                 comps=$( __get_machines )
  91                 ;;
  92         esac
  93         COMPREPLY=( $(compgen -W '$comps' -- "$cur") )
  94         return 0
  95     fi
  96
  97     if [[ -z ${verb-}  && $cur = -* ]]; then
  98         COMPREPLY=( $(compgen -W '${OPTS[*]}' -- "$cur") )
  99         return 0
 100     fi
 101
 102     if [[ -z ${verb-} ]]; then
 103         comps=${VERBS[*]}
 104
 105     elif __contains_word "$verb" ${VERBS[STANDALONE]}; then
 106         if [[ $cur = -* ]]; then
 107             comps='--help --version --system --user --global --no-pager'
 108         fi
 109
 110     elif __contains_word "$verb" ${VERBS[CRITICAL_CHAIN]}; then
 111         if [[ $cur = -* ]]; then
 112             comps='--help --version --system --user --fuzz --no-pager'
 113         fi
 114
 115     elif __contains_word "$verb" ${VERBS[DOT]}; then
 116         if [[ $cur = -* ]]; then
 117             comps='--help --version --system --user --global --from-pattern --to-pattern --order --require'
 118         fi
 119
 120     elif __contains_word "$verb" ${VERBS[SECCOMP_FILTER]}; then
 121         if [[ $cur = -* ]]; then
 122             comps='--help --version --no-pager'
 123         else
 124             comps=$( __get_syscall_sets )
 125         fi
 126
 127     elif __contains_word "$verb" ${VERBS[VERIFY]}; then
 128         if [[ $cur = -* ]]; then
 129             comps='--help --version --system --user --global --man=no --generators=yes --root --image --recursive-errors=no --recursive-errors=yes --recursive-errors=one'
 130         else
 131             comps=$( compgen -A file -- "$cur" )
 132             compopt -o filenames
 133         fi
 134
 135     elif __contains_word "$verb" ${VERBS[CAT_CONFIG]}; then
 136         if [[ $cur = -* ]]; then
 137             comps='--help --version --root --no-pager'
 138         elif [[ -z $cur ]]; then
 139             comps="$CONFIGS"
 140             compopt -o filenames
 141         else
 142             comps="$CONFIGS $( compgen -A file -- "$cur" )"
 143             compopt -o filenames
 144         fi
 145
 146     elif __contains_word "$verb" ${VERBS[SECURITY]}; then
 147         if [[ $cur = -* ]]; then
 148             comps='--help --version --no-pager --system --user -H --host -M --machine --offline --threshold --security-policy'
 149         else
 150             if __contains_word "--user" ${COMP_WORDS[*]}; then
 151                 mode=--user
 152             else
 153                 mode=--system
 154             fi
 155             comps=$( __get_services $mode )
 156         fi
 157
 158     elif __contains_word "$verb" ${VERBS[CONDITION]}; then
 159         if [[ $cur = -* ]]; then
 160             comps='--help --version --system --user --global --no-pager --root --image'
 161         elif [[ $prev = "-u" ]] || [[ $prev = "--unit" ]]; then
 162             if __contains_word "--user" ${COMP_WORDS[*]}; then
 163                 mode=--user
 164             else
 165                 mode=--system
 166             fi
 167             comps=$( __get_services $mode )
 168         fi
 169     fi
 170
 171     COMPREPLY=( $(compgen -W '$comps' -- "$cur") )
 172     return 0
 173 }
 174
 175 complete -F _systemd_analyze systemd-analyze