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bpf: log struct/union attribute for forward type
Current btf internal verbose logger logs fwd type as
[2] FWD A type_id=0
where A is the type name.
Commit 9d5f9f701b
("bpf: btf: fix struct/union/fwd types
with kind_flag") introduced kind_flag which can be used
to distinguish whether a forward type is a struct or
union.
Also, "type_id=0" does not carry any meaningful
information for fwd type as btf_type.type = 0 is simply
enforced during btf verification and is not used
anywhere else.
This commit changed the log to
[2] FWD A struct
if kind_flag = 0, or
[2] FWD A union
if kind_flag = 1.
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
This commit is contained in:
parent
dd4bfda9cf
commit
76c43ae84e
@ -1595,12 +1595,18 @@ static s32 btf_fwd_check_meta(struct btf_verifier_env *env,
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return 0;
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}
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static void btf_fwd_type_log(struct btf_verifier_env *env,
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const struct btf_type *t)
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{
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btf_verifier_log(env, "%s", btf_type_kflag(t) ? "union" : "struct");
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}
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static struct btf_kind_operations fwd_ops = {
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.check_meta = btf_fwd_check_meta,
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.resolve = btf_df_resolve,
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.check_member = btf_df_check_member,
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.check_kflag_member = btf_df_check_kflag_member,
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.log_details = btf_ref_type_log,
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.log_details = btf_fwd_type_log,
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.seq_show = btf_df_seq_show,
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};
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