diff options
Diffstat (limited to 'tools/lib/bpf/libbpf.h')
-rw-r--r-- | tools/lib/bpf/libbpf.h | 34 |
1 files changed, 0 insertions, 34 deletions
diff --git a/tools/lib/bpf/libbpf.h b/tools/lib/bpf/libbpf.h index 5eb3145b8945..e4d5353f757b 100644 --- a/tools/lib/bpf/libbpf.h +++ b/tools/lib/bpf/libbpf.h @@ -886,40 +886,6 @@ LIBBPF_API int bpf_map__lookup_and_delete_elem(const struct bpf_map *map, LIBBPF_API int bpf_map__get_next_key(const struct bpf_map *map, const void *cur_key, void *next_key, size_t key_sz); -/** - * @brief **libbpf_get_error()** extracts the error code from the passed - * pointer - * @param ptr pointer returned from libbpf API function - * @return error code; or 0 if no error occured - * - * Many libbpf API functions which return pointers have logic to encode error - * codes as pointers, and do not return NULL. Meaning **libbpf_get_error()** - * should be used on the return value from these functions immediately after - * calling the API function, with no intervening calls that could clobber the - * `errno` variable. Consult the individual functions documentation to verify - * if this logic applies should be used. - * - * For these API functions, if `libbpf_set_strict_mode(LIBBPF_STRICT_CLEAN_PTRS)` - * is enabled, NULL is returned on error instead. - * - * If ptr is NULL, then errno should be already set by the failing - * API, because libbpf never returns NULL on success and it now always - * sets errno on error. - * - * Example usage: - * - * struct perf_buffer *pb; - * - * pb = perf_buffer__new(bpf_map__fd(obj->maps.events), PERF_BUFFER_PAGES, &opts); - * err = libbpf_get_error(pb); - * if (err) { - * pb = NULL; - * fprintf(stderr, "failed to open perf buffer: %d\n", err); - * goto cleanup; - * } - */ -LIBBPF_API long libbpf_get_error(const void *ptr); - struct bpf_xdp_set_link_opts { size_t sz; int old_fd; |