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libbpf: Expose btf_type_by_id() internally 

btf_type_by_id() is internal-only convenience API returning non-const pointer
to struct btf_type. Expose it outside of btf.c for re-use.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20210318194036.3521577-2-andrii@kernel.org
This commit is contained in:
Andrii Nakryiko 2021-03-18 12:40:25 -07:00 committed by Alexei Starovoitov
parent fdc13979f9
commit e14ef4bf01
2 changed files with 6 additions and 1 deletions
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2
tools/lib/bpf/btf.c
View File

@ -435,7 +435,7 @@ const struct btf *btf__base_btf(const struct btf *btf)
}
/* internal helper returning non-const pointer to a type */
static struct btf_type *btf_type_by_id(struct btf *btf, __u32 type_id)
struct btf_type *btf_type_by_id(struct btf *btf, __u32 type_id)
{
if (type_id == 0)
return &btf_void;

5
tools/lib/bpf/libbpf_internal.h
View File

@ -107,6 +107,11 @@ static inline void *libbpf_reallocarray(void *ptr, size_t nmemb, size_t size)
return realloc(ptr, total);
}
struct btf;
struct btf_type;
struct btf_type *btf_type_by_id(struct btf *btf, __u32 type_id);
void *btf_add_mem(void **data, size_t *cap_cnt, size_t elem_sz,
size_t cur_cnt, size_t max_cnt, size_t add_cnt);
int btf_ensure_mem(void **data, size_t *cap_cnt, size_t elem_sz, size_t need_cnt);