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# bpftool(8) bash completion -*- shell-script -*-
#
# Copyright (C) 2017 Netronome Systems, Inc.
#
# This software is dual licensed under the GNU General License
# Version 2, June 1991 as shown in the file COPYING in the top-level
# directory of this source tree or the BSD 2-Clause License provided
# below. You have the option to license this software under the
# complete terms of either license.
#
# The BSD 2-Clause License:
#
# Redistribution and use in source and binary forms, with or
# without modification, are permitted provided that the following
# conditions are met:
#
# 1. Redistributions of source code must retain the above
# copyright notice, this list of conditions and the following
# disclaimer.
#
# 2. Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following
# disclaimer in the documentation and/or other materials
# provided with the distribution.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
#
# Author: Quentin Monnet <quentin.monnet@netronome.com>
# Takes a list of words in argument; each one of them is added to COMPREPLY if
# it is not already present on the command line. Returns no value.
_bpftool_once_attr()
{
local w idx found
for w in $*; do
found=0
for (( idx=3; idx < ${#words[@]}-1; idx++ )); do
if [[ $w == ${words[idx]} ]]; then
found=1
break
fi
done
[[ $found -eq 0 ]] && \
COMPREPLY+=( $( compgen -W "$w" -- "$cur" ) )
done
}
# Takes a list of words as argument; if any of those words is present on the
# command line, return 0. Otherwise, return 1.
_bpftool_search_list()
{
local w idx
for w in $*; do
for (( idx=3; idx < ${#words[@]}-1; idx++ )); do
[[ $w == ${words[idx]} ]] && return 0
done
done
return 1
}
# Takes a list of words in argument; adds them all to COMPREPLY if none of them
# is already present on the command line. Returns no value.
_bpftool_one_of_list()
{
_bpftool_search_list $* && return 1
COMPREPLY+=( $( compgen -W "$*" -- "$cur" ) )
}
_bpftool_get_map_ids()
{
COMPREPLY+=( $( compgen -W "$( bpftool -jp map 2>&1 | \
command sed -n 's/.*"id": \(.*\),$/\1/p' )" -- "$cur" ) )
}
_bpftool_get_prog_ids()
{
COMPREPLY+=( $( compgen -W "$( bpftool -jp prog 2>&1 | \
command sed -n 's/.*"id": \(.*\),$/\1/p' )" -- "$cur" ) )
}
_bpftool_get_prog_tags()
{
COMPREPLY+=( $( compgen -W "$( bpftool -jp prog 2>&1 | \
command sed -n 's/.*"tag": "\(.*\)",$/\1/p' )" -- "$cur" ) )
}
# For bpftool map update: retrieve type of the map to update.
_bpftool_map_update_map_type()
{
local keyword ref
for (( idx=3; idx < ${#words[@]}-1; idx++ )); do
if [[ ${words[$((idx-2))]} == "update" ]]; then
keyword=${words[$((idx-1))]}
ref=${words[$((idx))]}
fi
done
[[ -z $ref ]] && return 0
local type
type=$(bpftool -jp map show $keyword $ref | \
command sed -n 's/.*"type": "\(.*\)",$/\1/p')
printf $type
}
_bpftool_map_update_get_id()
{
# Is it the map to update, or a map to insert into the map to update?
# Search for "value" keyword.
local idx value
for (( idx=7; idx < ${#words[@]}-1; idx++ )); do
if [[ ${words[idx]} == "value" ]]; then
value=1
break
fi
done
[[ $value -eq 0 ]] && _bpftool_get_map_ids && return 0
# Id to complete is for a value. It can be either prog id or map id. This
# depends on the type of the map to update.
local type=$(_bpftool_map_update_map_type)
case $type in
array_of_maps|hash_of_maps)
_bpftool_get_map_ids
return 0
;;
prog_array)
_bpftool_get_prog_ids
return 0
;;
*)
return 0
;;
esac
}
_bpftool()
{
local cur prev words objword
_init_completion || return
# Deal with simplest keywords
case $prev in
help|hex|opcodes|visual)
return 0
;;
tag)
_bpftool_get_prog_tags
return 0
;;
file|pinned)
_filedir
return 0
;;
batch)
COMPREPLY=( $( compgen -W 'file' -- "$cur" ) )
return 0
;;
esac
# Search for object and command
local object command cmdword
for (( cmdword=1; cmdword < ${#words[@]}-1; cmdword++ )); do
[[ -n $object ]] && command=${words[cmdword]} && break
[[ ${words[cmdword]} != -* ]] && object=${words[cmdword]}
done
if [[ -z $object ]]; then
case $cur in
-*)
local c='--version --json --pretty'
COMPREPLY=( $( compgen -W "$c" -- "$cur" ) )
return 0
;;
*)
COMPREPLY=( $( compgen -W "$( bpftool help 2>&1 | \
command sed \
-e '/OBJECT := /!d' \
-e 's/.*{//' \
-e 's/}.*//' \
-e 's/|//g' )" -- "$cur" ) )
COMPREPLY+=( $( compgen -W 'batch help' -- "$cur" ) )
return 0
;;
esac
fi
[[ $command == help ]] && return 0
# Completion depends on object and command in use
case $object in
prog)
case $prev in
id)
_bpftool_get_prog_ids
return 0
;;
esac
local PROG_TYPE='id pinned tag'
case $command in
show|list)
[[ $prev != "$command" ]] && return 0
COMPREPLY=( $( compgen -W "$PROG_TYPE" -- "$cur" ) )
return 0
;;
dump)
case $prev in
$command)
COMPREPLY+=( $( compgen -W "xlated jited" -- \
"$cur" ) )
return 0
;;
xlated|jited)
COMPREPLY=( $( compgen -W "$PROG_TYPE" -- \
"$cur" ) )
return 0
;;
*)
_bpftool_once_attr 'file'
if _bpftool_search_list 'xlated'; then
COMPREPLY+=( $( compgen -W 'opcodes visual' -- \
"$cur" ) )
else
COMPREPLY+=( $( compgen -W 'opcodes' -- \
"$cur" ) )
fi
return 0
;;
esac
;;
pin)
if [[ $prev == "$command" ]]; then
COMPREPLY=( $( compgen -W "$PROG_TYPE" -- "$cur" ) )
else
_filedir
fi
return 0
;;
load)
_filedir
return 0
;;
*)
[[ $prev == $object ]] && \
COMPREPLY=( $( compgen -W 'dump help pin load \
show list' -- "$cur" ) )
;;
esac
;;
map)
local MAP_TYPE='id pinned'
case $command in
show|list|dump)
case $prev in
$command)
COMPREPLY=( $( compgen -W "$MAP_TYPE" -- "$cur" ) )
return 0
;;
id)
_bpftool_get_map_ids
return 0
;;
*)
return 0
;;
esac
;;
lookup|getnext|delete)
case $prev in
$command)
COMPREPLY=( $( compgen -W "$MAP_TYPE" -- "$cur" ) )
return 0
;;
id)
_bpftool_get_map_ids
return 0
;;
key)
COMPREPLY+=( $( compgen -W 'hex' -- "$cur" ) )
;;
*)
_bpftool_once_attr 'key'
return 0
;;
esac
;;
update)
case $prev in
$command)
COMPREPLY=( $( compgen -W "$MAP_TYPE" -- "$cur" ) )
return 0
;;
id)
_bpftool_map_update_get_id
return 0
;;
key)
COMPREPLY+=( $( compgen -W 'hex' -- "$cur" ) )
;;
value)
# We can have bytes, or references to a prog or a
# map, depending on the type of the map to update.
case $(_bpftool_map_update_map_type) in
array_of_maps|hash_of_maps)
local MAP_TYPE='id pinned'
COMPREPLY+=( $( compgen -W "$MAP_TYPE" \
-- "$cur" ) )
return 0
;;
prog_array)
local PROG_TYPE='id pinned tag'
COMPREPLY+=( $( compgen -W "$PROG_TYPE" \
-- "$cur" ) )
return 0
;;
*)
COMPREPLY+=( $( compgen -W 'hex' \
-- "$cur" ) )
return 0
;;
esac
return 0
;;
*)
_bpftool_once_attr 'key'
local UPDATE_FLAGS='any exist noexist'
for (( idx=3; idx < ${#words[@]}-1; idx++ )); do
if [[ ${words[idx]} == 'value' ]]; then
# 'value' is present, but is not the last
# word i.e. we can now have UPDATE_FLAGS.
_bpftool_one_of_list "$UPDATE_FLAGS"
return 0
fi
done
for (( idx=3; idx < ${#words[@]}-1; idx++ )); do
if [[ ${words[idx]} == 'key' ]]; then
# 'key' is present, but is not the last
# word i.e. we can now have 'value'.
_bpftool_once_attr 'value'
return 0
fi
done
return 0
;;
esac
;;
pin)
if [[ $prev == "$command" ]]; then
COMPREPLY=( $( compgen -W "$PROG_TYPE" -- "$cur" ) )
else
_filedir
fi
return 0
;;
*)
[[ $prev == $object ]] && \
COMPREPLY=( $( compgen -W 'delete dump getnext help \
lookup pin show list update' -- "$cur" ) )
;;
esac
;;
cgroup)
case $command in
show|list)
_filedir
return 0
;;
attach|detach)
local ATTACH_TYPES='ingress egress sock_create sock_ops \
device'
local ATTACH_FLAGS='multi override'
local PROG_TYPE='id pinned tag'
case $prev in
$command)
_filedir
return 0
;;
ingress|egress|sock_create|sock_ops|device)
COMPREPLY=( $( compgen -W "$PROG_TYPE" -- \
"$cur" ) )
return 0
;;
id)
_bpftool_get_prog_ids
return 0
;;
*)
if ! _bpftool_search_list "$ATTACH_TYPES"; then
COMPREPLY=( $( compgen -W "$ATTACH_TYPES" -- \
"$cur" ) )
elif [[ "$command" == "attach" ]]; then
# We have an attach type on the command line,
# but it is not the previous word, or
# "id|pinned|tag" (we already checked for
# that). This should only leave the case when
# we need attach flags for "attach" commamnd.
_bpftool_one_of_list "$ATTACH_FLAGS"
fi
return 0
;;
esac
;;
*)
[[ $prev == $object ]] && \
COMPREPLY=( $( compgen -W 'help attach detach \
show list' -- "$cur" ) )
;;
esac
;;
esac
} &&
complete -F _bpftool bpftool
# ex: ts=4 sw=4 et filetype=sh