tools: bpftool: preserve JSON for batch mode when dumping insns to file
authorQuentin Monnet <quentin.monnet@netronome.com>
Thu, 15 Feb 2018 06:42:54 +0000 (22:42 -0800)
committerDaniel Borkmann <daniel@iogearbox.net>
Thu, 15 Feb 2018 09:01:05 +0000 (10:01 +0100)
commit52c84d36b7e2f8197a9a6174d6f901a7c7afb850
tree52b4b6401eba46301f0bb23e0dc26af753f8e278
parent9c481b908b011398b1491752271cd1e2c9ad5758
tools: bpftool: preserve JSON for batch mode when dumping insns to file

Print a "null" JSON object to standard output when bpftool is used to
print program instructions to a file, so as to avoid breaking JSON
output on batch mode.

This null object was added for most commands in a previous commit, but
this specific case had been omitted.

Fixes: 004b45c0e51a ("tools: bpftool: provide JSON output for all possible commands")
Signed-off-by: Quentin Monnet <quentin.monnet@netronome.com>
Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
tools/bpf/bpftool/prog.c