diff options
| author | Andrii Nakryiko <andrii@kernel.org> | 2020-12-01 22:52:42 -0800 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2020-12-03 10:17:26 -0800 |
| commit | 0cfdcd6378071f383c900e3d8862347e2af1d1ca (patch) | |
| tree | 5e2ca63005890b314498b46f6470d42216392202 | |
| parent | 71ccb50074f31a50a1da4c1d8306d54da0907b00 (diff) | |
libbpf: Add base BTF accessor
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
| -rw-r--r-- | tools/lib/bpf/btf.c | 5 | ||||
| -rw-r--r-- | tools/lib/bpf/btf.h | 1 | ||||
| -rw-r--r-- | tools/lib/bpf/libbpf.map | 1 |
3 files changed, 7 insertions, 0 deletions
diff --git a/tools/lib/bpf/btf.c b/tools/lib/bpf/btf.c index 8ff46cd30ca1..1935e83d309c 100644 --- a/tools/lib/bpf/btf.c +++ b/tools/lib/bpf/btf.c @@ -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) { diff --git a/tools/lib/bpf/btf.h b/tools/lib/bpf/btf.h index 1093f6fe6800..1237bcd1dd17 100644 --- a/tools/lib/bpf/btf.h +++ b/tools/lib/bpf/btf.h @@ -51,6 +51,7 @@ LIBBPF_API __s32 btf__find_by_name(const struct btf *btf, LIBBPF_API __s32 btf__find_by_name_kind(const struct btf *btf, const char *type_name, __u32 kind); LIBBPF_API __u32 btf__get_nr_types(const struct btf *btf); +LIBBPF_API const struct btf *btf__base_btf(const struct btf *btf); LIBBPF_API const struct btf_type *btf__type_by_id(const struct btf *btf, __u32 id); LIBBPF_API size_t btf__pointer_size(const struct btf *btf); diff --git a/tools/lib/bpf/libbpf.map b/tools/lib/bpf/libbpf.map index 29ff4807b909..ed55498c4122 100644 --- a/tools/lib/bpf/libbpf.map +++ b/tools/lib/bpf/libbpf.map @@ -340,6 +340,7 @@ LIBBPF_0.2.0 { LIBBPF_0.3.0 { global: + btf__base_btf; btf__parse_elf_split; btf__parse_raw_split; btf__parse_split; |