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| author | Andrii Nakryiko <andriin@fb.com> | 2020-09-29 16:28:40 -0700 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2020-09-30 12:30:22 -0700 |
| commit | 9c6c5c48d7e9c00c541e0f1a5cea3a96767e825c (patch) | |
| tree | d1ebdedabbbeefc0dbd72a35a9186fb30208f3eb /tools/lib/bpf/libbpf_internal.h | |
| parent | ea7da1d563f11ee5f853fd19fc178ff17e990d09 (diff) | |
| download | lwn-9c6c5c48d7e9c00c541e0f1a5cea3a96767e825c.tar.gz lwn-9c6c5c48d7e9c00c541e0f1a5cea3a96767e825c.zip | |
libbpf: Make btf_dump work with modifiable BTF
Ensure that btf_dump can accommodate new BTF types being appended to BTF
instance after struct btf_dump was created. This came up during attemp to
use btf_dump for raw type dumping in selftests, but given changes are not
excessive, it's good to not have any gotchas in API usage, so I decided to
support such use case in general.
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200929232843.1249318-2-andriin@fb.com
Diffstat (limited to 'tools/lib/bpf/libbpf_internal.h')
| -rw-r--r-- | tools/lib/bpf/libbpf_internal.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/lib/bpf/libbpf_internal.h b/tools/lib/bpf/libbpf_internal.h index eed5b624a784..d99bc847bf84 100644 --- a/tools/lib/bpf/libbpf_internal.h +++ b/tools/lib/bpf/libbpf_internal.h @@ -107,6 +107,7 @@ static inline void *libbpf_reallocarray(void *ptr, size_t nmemb, size_t size) 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); static inline bool libbpf_validate_opts(const char *opts, size_t opts_sz, size_t user_sz, |