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libbpf: Add base BTF accessor

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Add ability to get base BTF. It can be also used to check if BTF is split BTF.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20201202065244.530571-3-andrii@kernel.org
This commit is contained in:
Andrii Nakryiko
2020-12-01 22:52:42 -08:00
committed by Andrii Nakryiko
parent 65e4be6f5d
commit a741bc6479
3 changed files with 7 additions and 0 deletions
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5
src/btf.c
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@@ -432,6 +432,11 @@ __u32 btf__get_nr_types(const struct btf *btf)
return btf->start_id + btf->nr_types - 1;
}
const struct btf *btf__base_btf(const struct btf *btf)
{
return btf->base_btf;
}
/* internal helper returning non-const pointer to a type */
static struct btf_type *btf_type_by_id(struct btf *btf, __u32 type_id)
{