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bpftool: add bash completion for peek/push/enqueue/pop/dequeue
bpftool map peek id <TAB> - suggests only queue and stack map ids bpftool map pop id <TAB> - suggests only stack map ids bpftool map dequeue id <TAB> - suggests only queue map ids bpftool map push id <TAB> - suggests only stack map ids bpftool map enqueue id <TAB> - suggests only queue map ids bpftool map push id 1 <TAB> - suggests 'value', not 'key' bpftool map enqueue id 2 <TAB> - suggests 'value', not 'key' bpftool map update id <stack/queue type> - suggests 'value', not 'key' bpftool map lookup id <stack/queue type> - suggests nothing Signed-off-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
This commit is contained in:
Stanislav Fomichev
Daniel Borkmann
parent
74f312ef84
commit
55c70bffc7
@ -50,14 +50,15 @@ _bpftool_get_map_ids()
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command sed -n 's/.*"id": \(.*\),$/\1/p' )" -- "$cur" ) )
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}
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_bpftool_get_perf_map_ids()
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# Takes map type and adds matching map ids to the list of suggestions.
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_bpftool_get_map_ids_for_type()
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{
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local type="$1"
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COMPREPLY+=( $( compgen -W "$( bpftool -jp map 2>&1 | \
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command grep -C2 perf_event_array | \
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command grep -C2 "$type" | \
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command sed -n 's/.*"id": \(.*\),$/\1/p' )" -- "$cur" ) )
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}
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_bpftool_get_prog_ids()
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{
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COMPREPLY+=( $( compgen -W "$( bpftool -jp prog 2>&1 | \
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@ -99,15 +100,25 @@ _sysfs_get_netdevs()
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"$cur" ) )
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}
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# For bpftool map update: retrieve type of the map to update.
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_bpftool_map_update_map_type()
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# Retrieve type of the map that we are operating on.
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_bpftool_map_guess_map_type()
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{
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local keyword ref
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for (( idx=3; idx < ${#words[@]}-1; idx++ )); do
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if [[ ${words[$((idx-2))]} == "update" ]]; then
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keyword=${words[$((idx-1))]}
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ref=${words[$((idx))]}
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fi
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case "${words[$((idx-2))]}" in
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lookup|update)
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keyword=${words[$((idx-1))]}
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ref=${words[$((idx))]}
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;;
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push)
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printf "stack"
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return 0
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;;
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enqueue)
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printf "queue"
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return 0
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;;
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esac
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done
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[[ -z $ref ]] && return 0
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@ -119,6 +130,8 @@ _bpftool_map_update_map_type()
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_bpftool_map_update_get_id()
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{
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local command="$1"
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# Is it the map to update, or a map to insert into the map to update?
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# Search for "value" keyword.
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local idx value
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@ -128,11 +141,24 @@ _bpftool_map_update_get_id()
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break
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fi
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done
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[[ $value -eq 0 ]] && _bpftool_get_map_ids && return 0
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if [[ $value -eq 0 ]]; then
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case "$command" in
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push)
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_bpftool_get_map_ids_for_type stack
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;;
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enqueue)
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_bpftool_get_map_ids_for_type queue
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;;
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*)
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_bpftool_get_map_ids
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;;
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esac
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return 0
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fi
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# Id to complete is for a value. It can be either prog id or map id. This
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# depends on the type of the map to update.
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local type=$(_bpftool_map_update_map_type)
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local type=$(_bpftool_map_guess_map_type)
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case $type in
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array_of_maps|hash_of_maps)
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_bpftool_get_map_ids
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@ -382,14 +408,28 @@ _bpftool()
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map)
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local MAP_TYPE='id pinned'
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case $command in
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show|list|dump)
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show|list|dump|peek|pop|dequeue)
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case $prev in
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$command)
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COMPREPLY=( $( compgen -W "$MAP_TYPE" -- "$cur" ) )
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return 0
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;;
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id)
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_bpftool_get_map_ids
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case "$command" in
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peek)
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_bpftool_get_map_ids_for_type stack
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_bpftool_get_map_ids_for_type queue
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;;
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pop)
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_bpftool_get_map_ids_for_type stack
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;;
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dequeue)
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_bpftool_get_map_ids_for_type queue
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;;
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*)
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_bpftool_get_map_ids
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;;
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esac
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return 0
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;;
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*)
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@ -447,19 +487,25 @@ _bpftool()
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COMPREPLY+=( $( compgen -W 'hex' -- "$cur" ) )
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;;
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*)
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case $(_bpftool_map_guess_map_type) in
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queue|stack)
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return 0
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;;
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esac
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_bpftool_once_attr 'key'
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return 0
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;;
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esac
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;;
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update)
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update|push|enqueue)
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case $prev in
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$command)
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COMPREPLY=( $( compgen -W "$MAP_TYPE" -- "$cur" ) )
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return 0
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;;
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id)
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_bpftool_map_update_get_id
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_bpftool_map_update_get_id $command
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return 0
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;;
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key)
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@ -468,7 +514,7 @@ _bpftool()
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value)
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# We can have bytes, or references to a prog or a
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# map, depending on the type of the map to update.
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case $(_bpftool_map_update_map_type) in
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case "$(_bpftool_map_guess_map_type)" in
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array_of_maps|hash_of_maps)
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local MAP_TYPE='id pinned'
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COMPREPLY+=( $( compgen -W "$MAP_TYPE" \
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@ -490,6 +536,13 @@ _bpftool()
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return 0
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;;
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*)
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case $(_bpftool_map_guess_map_type) in
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queue|stack)
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_bpftool_once_attr 'value'
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return 0;
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;;
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esac
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_bpftool_once_attr 'key'
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local UPDATE_FLAGS='any exist noexist'
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for (( idx=3; idx < ${#words[@]}-1; idx++ )); do
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@ -508,6 +561,7 @@ _bpftool()
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return 0
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fi
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done
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return 0
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;;
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esac
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@ -527,7 +581,7 @@ _bpftool()
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return 0
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;;
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id)
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_bpftool_get_perf_map_ids
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_bpftool_get_map_ids_for_type perf_event_array
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return 0
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;;
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cpu)
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@ -546,7 +600,8 @@ _bpftool()
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*)
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[[ $prev == $object ]] && \
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COMPREPLY=( $( compgen -W 'delete dump getnext help \
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lookup pin event_pipe show list update create' -- \
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lookup pin event_pipe show list update create \
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peek push enqueue pop dequeue' -- \
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"$cur" ) )
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;;
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esac
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