netdev - [PATCH v4 bpf-next 3/4] bpftool: add bash completions for btf command

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Date:   Thu, 25 Apr 2019 15:30:10 -0700
From:   Andrii Nakryiko <andriin@...com>
To:     <andrii.nakryiko@...il.com>, <netdev@...r.kernel.org>,
        <bpf@...r.kernel.org>
Subject: [PATCH v4 bpf-next 3/4] bpftool: add bash completions for btf command

Add full support for btf command in bash-completion script.

Cc: Quentin Monnet <quentin.monnet@...ronome.com>
Cc: Yonghong Song <yhs@...com>
Cc: Alexei Starovoitov <ast@...com>
Cc: Daniel Borkmann <daniel@...earbox.net>
Reviewed-by: Quentin Monnet <quentin.monnet@...ronome.com>
Signed-off-by: Andrii Nakryiko <andriin@...com>
---
 tools/bpf/bpftool/bash-completion/bpftool | 46 +++++++++++++++++++++++
 1 file changed, 46 insertions(+)

diff --git a/tools/bpf/bpftool/bash-completion/bpftool b/tools/bpf/bpftool/bash-completion/bpftool
index 9f3ffe1e26ab..bca91d04ed35 100644
--- a/tools/bpf/bpftool/bash-completion/bpftool
+++ b/tools/bpf/bpftool/bash-completion/bpftool
@@ -217,6 +217,7 @@ _bpftool()
     done
     cur=${words[cword]}
     prev=${words[cword - 1]}
+    pprev=${words[cword - 2]}
 
     local object=${words[1]} command=${words[2]}
 
@@ -607,6 +608,51 @@ _bpftool()
                     ;;
             esac
             ;;
+        btf)
+            local PROG_TYPE='id pinned tag'
+            local MAP_TYPE='id pinned'
+            case $command in
+                dump)
+                    case $prev in
+                        $command)
+                            COMPREPLY+=( $( compgen -W "id map prog file" -- \
+                                "$cur" ) )
+                            return 0
+                            ;;
+                        prog)
+                            COMPREPLY=( $( compgen -W "$PROG_TYPE" -- "$cur" ) )
+                            return 0
+                            ;;
+                        map)
+                            COMPREPLY=( $( compgen -W "$MAP_TYPE" -- "$cur" ) )
+                            return 0
+                            ;;
+                        id)
+                            case $pprev in
+                                prog)
+                                    _bpftool_get_prog_ids
+                                    ;;
+                                map)
+                                    _bpftool_get_map_ids
+                                    ;;
+                            esac
+                            return 0
+                            ;;
+                        *)
+                            if [[ $cword == 6 ]] && [[ ${words[3]} == "map" ]]; then
+                                 COMPREPLY+=( $( compgen -W 'key value kv all' -- \
+                                     "$cur" ) )
+                            fi
+                            return 0
+                            ;;
+                    esac
+                    ;;
+                *)
+                    [[ $prev == $object ]] && \
+                        COMPREPLY=( $( compgen -W 'dump help' -- "$cur" ) )
+                    ;;
+            esac
+            ;;
         cgroup)
             case $command in
                 show|list)
-- 
2.17.1