Commit 9c651127 authored by Andrii Nakryiko's avatar Andrii Nakryiko Committed by Daniel Borkmann

selftests/btf: add initial BTF dedup tests

This patch sets up a new kind of tests (BTF dedup tests) and tests few aspects of
BTF dedup algorithm. More complete set of tests will come in follow up patches.
Signed-off-by: default avatarAndrii Nakryiko <andriin@fb.com>
Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
parent d5caef5b
......@@ -237,6 +237,11 @@ static int btf_parse_type_sec(struct btf *btf)
return 0;
}
__u32 btf__get_nr_types(const struct btf *btf)
{
return btf->nr_types;
}
const struct btf_type *btf__type_by_id(const struct btf *btf, __u32 type_id)
{
if (type_id > btf->nr_types)
......@@ -427,6 +432,13 @@ int btf__fd(const struct btf *btf)
return btf->fd;
}
void btf__get_strings(const struct btf *btf, const char **strings,
__u32 *str_len)
{
*strings = btf->strings;
*str_len = btf->hdr->str_len;
}
const char *btf__name_by_offset(const struct btf *btf, __u32 offset)
{
if (offset < btf->hdr->str_len)
......
......@@ -59,11 +59,14 @@ LIBBPF_API void btf__free(struct btf *btf);
LIBBPF_API struct btf *btf__new(__u8 *data, __u32 size);
LIBBPF_API __s32 btf__find_by_name(const struct btf *btf,
const char *type_name);
LIBBPF_API __u32 btf__get_nr_types(const struct btf *btf);
LIBBPF_API const struct btf_type *btf__type_by_id(const struct btf *btf,
__u32 id);
LIBBPF_API __s64 btf__resolve_size(const struct btf *btf, __u32 type_id);
LIBBPF_API int btf__resolve_type(const struct btf *btf, __u32 type_id);
LIBBPF_API int btf__fd(const struct btf *btf);
LIBBPF_API void btf__get_strings(const struct btf *btf, const char **strings,
__u32 *str_len);
LIBBPF_API const char *btf__name_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, char *map_name,
......
......@@ -135,6 +135,8 @@ LIBBPF_0.0.2 {
bpf_get_link_xdp_id;
btf__dedup;
btf__get_map_kv_tids;
btf__get_nr_types;
btf__get_strings;
btf_ext__free;
btf_ext__func_info_rec_size;
btf_ext__line_info_rec_size;
......
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