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author | Quentin Monnet <quentin@isovalent.com> | 2020-05-23 04:07:51 +0300 |
---|---|---|
committer | Alexei Starovoitov <ast@kernel.org> | 2020-06-02 00:38:18 +0300 |
commit | 90040351a832acf862c8f1855c29411303d23755 (patch) | |
tree | 567809c56719ac0e38227d83459c76212de63d00 /tools/bpf/bpftool/btf.c | |
parent | eae9d3c0167df840e821317040efcf0ca6789cb9 (diff) | |
download | linux-90040351a832acf862c8f1855c29411303d23755.tar.xz |
tools, bpftool: Clean subcommand help messages
This is a clean-up for the formatting of the do_help functions for
bpftool's subcommands. The following fixes are included:
- Do not use argv[-2] for "iter" help message, as the help is shown by
default if no "iter" action is selected, resulting in messages looking
like "./bpftool bpftool pin...".
- Do not print unused HELP_SPEC_PROGRAM in help message for "bpftool
link".
- Andrii used argument indexing to avoid having multiple occurrences of
bin_name and argv[-2] in the fprintf() for the help message, for
"bpftool gen" and "bpftool link". Let's reuse this for all other help
functions. We can remove up to thirty arguments for the "bpftool map"
help message.
- Harmonise all functions, e.g. use ending quotes-comma on a separate
line.
Signed-off-by: Quentin Monnet <quentin@isovalent.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20200523010751.23465-1-quentin@isovalent.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools/bpf/bpftool/btf.c')
-rw-r--r-- | tools/bpf/bpftool/btf.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/tools/bpf/bpftool/btf.c b/tools/bpf/bpftool/btf.c index 41a1346934a1..c134666591a6 100644 --- a/tools/bpf/bpftool/btf.c +++ b/tools/bpf/bpftool/btf.c @@ -951,9 +951,9 @@ static int do_help(int argc, char **argv) } fprintf(stderr, - "Usage: %s btf { show | list } [id BTF_ID]\n" - " %s btf dump BTF_SRC [format FORMAT]\n" - " %s btf help\n" + "Usage: %1$s %2$s { show | list } [id BTF_ID]\n" + " %1$s %2$s dump BTF_SRC [format FORMAT]\n" + " %1$s %2$s help\n" "\n" " BTF_SRC := { id BTF_ID | prog PROG | map MAP [{key | value | kv | all}] | file FILE }\n" " FORMAT := { raw | c }\n" @@ -961,7 +961,7 @@ static int do_help(int argc, char **argv) " " HELP_SPEC_PROGRAM "\n" " " HELP_SPEC_OPTIONS "\n" "", - bin_name, bin_name, bin_name); + bin_name, "btf"); return 0; } |