pahole: Add --btf_features_strict to reject unknown BTF features
--btf_features is used to specify the list of requested features
for BTF encoding. However, it is not strict in rejecting requests
with unknown features; this allows us to use the same parameters
regardless of pahole version. --btf_features_strict carries out
the same encoding with the same feature set, but will fail if an
unrecognized feature is specified.
So
pahole -J --btf_features=enum64,foo
will succeed, while
pahole -J --btf_features_strict=enum64,foo
will not.
Suggested-by: Andrii Nakryiko <andrii@kernel.org>
Suggested-by: Eduard Zingerman <eddyz87@gmail.com>
Signed-off-by: Alan Maguire <alan.maguire@oracle.com>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Andrii Nakryiko <andrii.nakryiko@gmail.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Hao Luo <haoluo@google.com>
Cc: John Fastabend <john.fastabend@gmail.com>
Cc: KP Singh <kpsingh@kernel.org>
Cc: Martin KaFai Lau <martin.lau@linux.dev>
Cc: Mykola Lysenko <mykolal@fb.com>
Cc: Song Liu <song@kernel.org>
Cc: Stanislav Fomichev <sdf@google.com>
Cc: Yonghong Song <yhs@fb.com>
Cc: bpf@vger.kernel.org
Link: https://lore.kernel.org/r/20231023095726.1179529-6-alan.maguire@oracle.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2 files changed
