diff options
| author | Alexei Starovoitov <ast@kernel.org> | 2019-11-14 10:57:05 -0800 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2019-11-15 23:42:14 +0100 |
| commit | 1442e2871b7679271fc9fcbf043ba1be511a7428 (patch) | |
| tree | 4c44a05835c152d723cbb8dac3c9f4103d289a74 /tools/lib/bpf/btf.c | |
| parent | fec56f5890d93fc2ed74166c397dc186b1c25951 (diff) | |
libbpf: Introduce btf__find_by_name_kind()
Introduce btf__find_by_name_kind() helper to search BTF by name and kind, since
name alone can be ambiguous.
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Song Liu <songliubraving@fb.com>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/20191114185720.1641606-6-ast@kernel.org
Diffstat (limited to 'tools/lib/bpf/btf.c')
| -rw-r--r-- | tools/lib/bpf/btf.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/tools/lib/bpf/btf.c b/tools/lib/bpf/btf.c index 86a1847e4a9f..88efa2bb7137 100644 --- a/tools/lib/bpf/btf.c +++ b/tools/lib/bpf/btf.c @@ -316,6 +316,28 @@ __s32 btf__find_by_name(const struct btf *btf, const char *type_name) return -ENOENT; } +__s32 btf__find_by_name_kind(const struct btf *btf, const char *type_name, + __u32 kind) +{ + __u32 i; + + if (kind == BTF_KIND_UNKN || !strcmp(type_name, "void")) + return 0; + + for (i = 1; i <= btf->nr_types; i++) { + const struct btf_type *t = btf->types[i]; + const char *name; + + if (btf_kind(t) != kind) + continue; + name = btf__name_by_offset(btf, t->name_off); + if (name && !strcmp(type_name, name)) + return i; + } + + return -ENOENT; +} + void btf__free(struct btf *btf) { if (!btf) |