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libbpf: Replace btf__type_by_id() with btf_type_by_id().

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To prepare relo_core.c to be compiled in the kernel and the user space
replace btf__type_by_id with btf_type_by_id.

In libbpf btf__type_by_id and btf_type_by_id have different behavior.

bpf_core_apply_relo_insn() needs behavior of uapi btf__type_by_id
vs internal btf_type_by_id, but type_id range check is already done
in bpf_core_apply_relo(), so it's safe to replace it everywhere.
The kernel btf_type_by_id() does the check anyway. It doesn't hurt.

Suggested-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211201181040.23337-2-alexei.starovoitov@gmail.com
This commit is contained in:
Alexei Starovoitov
2021-12-01 10:10:24 -08:00
committed by Andrii Nakryiko
parent c4da8092cc
commit b9bd1f8682
3 changed files with 10 additions and 13 deletions
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2
src/btf.c
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@@ -454,7 +454,7 @@ const struct btf *btf__base_btf(const struct btf *btf)
}
/* internal helper returning non-const pointer to a type */
struct btf_type *btf_type_by_id(struct btf *btf, __u32 type_id)
struct btf_type *btf_type_by_id(const struct btf *btf, __u32 type_id)
{
if (type_id == 0)
return &btf_void;