diff options
| author | Andrii Nakryiko <andriin@fb.com> | 2020-09-28 19:05:31 -0700 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2020-09-28 19:17:13 -0700 |
| commit | f86ed050bcee3b7daa420eb31a8b6d079701caab (patch) | |
| tree | 279c316e5814e5159995a6e93e503e2c8f7a25fd /tools/lib | |
| parent | 4a3b33f8579af182ebcf9c7e9304effce505500e (diff) | |
libbpf: Add btf__str_by_offset() as a more generic variant of name_by_offset
BTF strings are used not just for names, they can be arbitrary strings used
for CO-RE relocations, line/func infos, etc. Thus "name_by_offset" terminology
is too specific and might be misleading. Instead, introduce
btf__str_by_offset() API which uses generic string terminology.
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20200929020533.711288-3-andriin@fb.com
Diffstat (limited to 'tools/lib')
| -rw-r--r-- | tools/lib/bpf/btf.c | 7 | ||||
| -rw-r--r-- | tools/lib/bpf/btf.h | 1 | ||||
| -rw-r--r-- | tools/lib/bpf/libbpf.map | 1 |
3 files changed, 8 insertions, 1 deletions
diff --git a/tools/lib/bpf/btf.c b/tools/lib/bpf/btf.c index 7533088b2524..2d0b1e12f50e 100644 --- a/tools/lib/bpf/btf.c +++ b/tools/lib/bpf/btf.c @@ -1025,7 +1025,7 @@ const void *btf__get_raw_data(const struct btf *btf_ro, __u32 *size) return btf->raw_data; } -const char *btf__name_by_offset(const struct btf *btf, __u32 offset) +const char *btf__str_by_offset(const struct btf *btf, __u32 offset) { if (offset < btf->hdr->str_len) return btf->strs_data + offset; @@ -1033,6 +1033,11 @@ const char *btf__name_by_offset(const struct btf *btf, __u32 offset) return NULL; } +const char *btf__name_by_offset(const struct btf *btf, __u32 offset) +{ + return btf__str_by_offset(btf, offset); +} + int btf__get_from_id(__u32 id, struct btf **btf) { struct bpf_btf_info btf_info = { 0 }; diff --git a/tools/lib/bpf/btf.h b/tools/lib/bpf/btf.h index d6629a2e8ebf..f7dec0144c3c 100644 --- a/tools/lib/bpf/btf.h +++ b/tools/lib/bpf/btf.h @@ -49,6 +49,7 @@ LIBBPF_API int btf__fd(const struct btf *btf); LIBBPF_API void btf__set_fd(struct btf *btf, int fd); LIBBPF_API const void *btf__get_raw_data(const struct btf *btf, __u32 *size); LIBBPF_API const char *btf__name_by_offset(const struct btf *btf, __u32 offset); +LIBBPF_API const char *btf__str_by_offset(const struct btf *btf, __u32 offset); LIBBPF_API int btf__get_from_id(__u32 id, struct btf **btf); LIBBPF_API int btf__get_map_kv_tids(const struct btf *btf, const char *map_name, __u32 expected_key_size, diff --git a/tools/lib/bpf/libbpf.map b/tools/lib/bpf/libbpf.map index 0216ee6fdc2b..6b10ebad69c6 100644 --- a/tools/lib/bpf/libbpf.map +++ b/tools/lib/bpf/libbpf.map @@ -327,6 +327,7 @@ LIBBPF_0.2.0 { btf__add_volatile; btf__find_str; btf__new_empty; + btf__str_by_offset; perf_buffer__buffer_cnt; perf_buffer__buffer_fd; perf_buffer__epoll_fd; |