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| author | Ilya Leoshkevich <iii@linux.ibm.com> | 2023-02-15 00:12:14 +0100 |
|---|---|---|
| committer | Andrii Nakryiko <andrii@kernel.org> | 2023-02-16 15:32:36 -0800 |
| commit | 55a9ed0e16baf4d025c160d46bc1e3fac0d4cdc4 (patch) | |
| tree | d61801f83178b52f3df16b82d9eb0ca53e866c70 /tools/lib/bpf/bpf.h | |
| parent | 6c20822fada1b8adb77fa450d03a0d449686a4a9 (diff) | |
| download | linux-55a9ed0e16baf4d025c160d46bc1e3fac0d4cdc4.tar.gz linux-55a9ed0e16baf4d025c160d46bc1e3fac0d4cdc4.tar.bz2 linux-55a9ed0e16baf4d025c160d46bc1e3fac0d4cdc4.zip | |
libbpf: Introduce bpf_{btf,link,map,prog}_get_info_by_fd()
These are type-safe wrappers around bpf_obj_get_info_by_fd(). They
found one problem in selftests, and are also useful for adding
Memory Sanitizer annotations.
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20230214231221.249277-2-iii@linux.ibm.com
Diffstat (limited to 'tools/lib/bpf/bpf.h')
| -rw-r--r-- | tools/lib/bpf/bpf.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/tools/lib/bpf/bpf.h b/tools/lib/bpf/bpf.h index 7468978d3c27..9ed9bceb4111 100644 --- a/tools/lib/bpf/bpf.h +++ b/tools/lib/bpf/bpf.h @@ -386,6 +386,15 @@ LIBBPF_API int bpf_link_get_fd_by_id(__u32 id); LIBBPF_API int bpf_link_get_fd_by_id_opts(__u32 id, const struct bpf_get_fd_by_id_opts *opts); LIBBPF_API int bpf_obj_get_info_by_fd(int bpf_fd, void *info, __u32 *info_len); +/* Type-safe variants of bpf_obj_get_info_by_fd(). The callers still needs to + * pass info_len, which should normally be + * sizeof(struct bpf_{prog,map,btf,link}_info), in order to be compatible with + * different libbpf and kernel versions. + */ +LIBBPF_API int bpf_prog_get_info_by_fd(int prog_fd, struct bpf_prog_info *info, __u32 *info_len); +LIBBPF_API int bpf_map_get_info_by_fd(int map_fd, struct bpf_map_info *info, __u32 *info_len); +LIBBPF_API int bpf_btf_get_info_by_fd(int btf_fd, struct bpf_btf_info *info, __u32 *info_len); +LIBBPF_API int bpf_link_get_info_by_fd(int link_fd, struct bpf_link_info *info, __u32 *info_len); struct bpf_prog_query_opts { size_t sz; /* size of this struct for forward/backward compatibility */ |