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| author | Andrii Nakryiko <andrii@kernel.org> | 2023-04-06 16:42:02 -0700 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2023-04-11 18:05:44 +0200 |
| commit | 097d8002b754a865beef880e5c1cdc3ef7c2163d (patch) | |
| tree | 609cf96cab2c86e69daf87254020851a03811012 /tools/lib/bpf/bpf.h | |
| parent | 94e55c0fdaf4268bdda2d3b375bc61daba056e85 (diff) | |
| download | linux-097d8002b754a865beef880e5c1cdc3ef7c2163d.tar.gz linux-097d8002b754a865beef880e5c1cdc3ef7c2163d.tar.bz2 linux-097d8002b754a865beef880e5c1cdc3ef7c2163d.zip | |
libbpf: Wire through log_true_size for bpf_btf_load() API
Similar to what we did for bpf_prog_load() in previous patch, wire
returning of log_true_size value from kernel back to the user through
OPTS out field.
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20230406234205.323208-17-andrii@kernel.org
Diffstat (limited to 'tools/lib/bpf/bpf.h')
| -rw-r--r-- | tools/lib/bpf/bpf.h | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/tools/lib/bpf/bpf.h b/tools/lib/bpf/bpf.h index cfa0cdfa50f8..a2c091389b18 100644 --- a/tools/lib/bpf/bpf.h +++ b/tools/lib/bpf/bpf.h @@ -124,11 +124,18 @@ struct bpf_btf_load_opts { char *log_buf; __u32 log_level; __u32 log_size; + /* output: actual total log contents size (including termintaing zero). + * It could be both larger than original log_size (if log was + * truncated), or smaller (if log buffer wasn't filled completely). + * If kernel doesn't support this feature, log_size is left unchanged. + */ + __u32 log_true_size; + size_t :0; }; -#define bpf_btf_load_opts__last_field log_size +#define bpf_btf_load_opts__last_field log_true_size LIBBPF_API int bpf_btf_load(const void *btf_data, size_t btf_size, - const struct bpf_btf_load_opts *opts); + struct bpf_btf_load_opts *opts); LIBBPF_API int bpf_map_update_elem(int fd, const void *key, const void *value, __u64 flags); |