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systemd/shell-completion/bash/systemd-analyze
Sibo Dong f34173a048 bash-completion: localize words and cword variables
The words and cword variables are not localized in all Bash completion
scripts that call _init_completion.

cur, prev, words, and cword (and split if using the -s flag) are all
variables that should be localized in Bash completion scripts before
calling _init_completion (even if they don't otherwise appear in the
calling script). This is done for cur and prev, but not for words and
cword. Letting words and cword remain unlocalized may clobber variables
the user is using for other purposes, which is bad.

This issue can be resolved by declaring words and cword as local
variables.

Resolves #19188.
2021-04-06 16:15:13 +02:00

163 lines
5.2 KiB
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# systemd-analyze(1) completion -*- shell-script -*-
# SPDX-License-Identifier: LGPL-2.1-or-later
#
# This file is part of systemd.
#
# Copyright © 2010 Ran Benita
#
# systemd is free software; you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation; either version 2.1 of the License, or
# (at your option) any later version.
#
# systemd is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with systemd; If not, see <http://www.gnu.org/licenses/>.
__contains_word () {
local w word=$1; shift
for w in "$@"; do
[[ $w = "$word" ]] && return
done
}
__get_machines() {
local a b
machinectl list --full --no-legend --no-pager | { while read a b; do echo " $a"; done; };
}
__get_services() {
systemctl list-units --no-legend --no-pager --plain -t service --all $1 | \
{ while read -r a b c; do [[ $b == "loaded" ]]; echo " $a"; done }
}
__get_syscall_sets() {
local line
systemd-analyze syscall-filter --no-pager | while IFS= read -r line; do
if [[ $line == @* ]]; then
printf '%s\n' "$line"
fi
done
}
_systemd_analyze() {
local i verb comps mode
local cur=${COMP_WORDS[COMP_CWORD]} prev=${COMP_WORDS[COMP_CWORD-1]} words cword
local -A OPTS=(
[STANDALONE]='-h --help --version --system --user --global --order --require --no-pager
--man=no --generators=yes'
[ARG]='-H --host -M --machine --fuzz --from-pattern --to-pattern --root'
)
local -A VERBS=(
[STANDALONE]='time blame plot dump unit-paths exit-status condition calendar timestamp timespan'
[CRITICAL_CHAIN]='critical-chain'
[DOT]='dot'
[VERIFY]='verify'
[SECCOMP_FILTER]='syscall-filter'
[CAT_CONFIG]='cat-config'
[SECURITY]='security'
)
local CONFIGS='systemd/bootchart.conf systemd/coredump.conf systemd/journald.conf
systemd/journal-remote.conf systemd/journal-upload.conf systemd/logind.conf
systemd/resolved.conf systemd/networkd.conf systemd/resolved.conf
systemd/sleep.conf systemd/system.conf systemd/timedated.conf
systemd/timesyncd.conf systemd/user.conf udev/udev.conf'
_init_completion || return
for ((i=0; i < COMP_CWORD; i++)); do
if __contains_word "${COMP_WORDS[i]}" ${VERBS[*]} &&
! __contains_word "${COMP_WORDS[i-1]}" ${OPTS[ARG]}; then
verb=${COMP_WORDS[i]}
break
fi
done
if __contains_word "$prev" ${OPTS[ARG]}; then
case $prev in
--host|-H)
comps=$(compgen -A hostname)
;;
--machine|-M)
comps=$( __get_machines )
;;
esac
COMPREPLY=( $(compgen -W '$comps' -- "$cur") )
return 0
fi
if [[ -z $verb && $cur = -* ]]; then
COMPREPLY=( $(compgen -W '${OPTS[*]}' -- "$cur") )
return 0
fi
if [[ -z $verb ]]; then
comps=${VERBS[*]}
elif __contains_word "$verb" ${VERBS[STANDALONE]}; then
if [[ $cur = -* ]]; then
comps='--help --version --system --user --global --no-pager'
fi
elif __contains_word "$verb" ${VERBS[CRITICAL_CHAIN]}; then
if [[ $cur = -* ]]; then
comps='--help --version --system --user --fuzz --no-pager'
fi
elif __contains_word "$verb" ${VERBS[DOT]}; then
if [[ $cur = -* ]]; then
comps='--help --version --system --user --global --from-pattern --to-pattern --order --require'
fi
elif __contains_word "$verb" ${VERBS[SECCOMP_FILTER]}; then
if [[ $cur = -* ]]; then
comps='--help --version --no-pager'
else
comps=$( __get_syscall_sets )
fi
elif __contains_word "$verb" ${VERBS[VERIFY]}; then
if [[ $cur = -* ]]; then
comps='--help --version --system --user --global --man=no --generators=yes'
else
comps=$( compgen -A file -- "$cur" )
compopt -o filenames
fi
elif __contains_word "$verb" ${VERBS[CAT_CONFIG]}; then
if [[ $cur = -* ]]; then
comps='--help --version --root --no-pager'
elif [[ -z $cur ]]; then
comps="$CONFIGS"
compopt -o filenames
else
comps="$CONFIGS $( compgen -A file -- "$cur" )"
compopt -o filenames
fi
elif __contains_word "$verb" ${VERBS[SECURITY]}; then
if [[ $cur = -* ]]; then
comps='--help --version --no-pager --system --user -H --host -M --machine'
else
if __contains_word "--user" ${COMP_WORDS[*]}; then
mode=--user
else
mode=--system
fi
comps=$( __get_services $mode )
fi
fi
COMPREPLY=( $(compgen -W '$comps' -- "$cur") )
return 0
}
complete -F _systemd_analyze systemd-analyze