1 files changed, 13 insertions, 1 deletions
diff --git a/tools/lib/bpf/libbpf_internal.h b/tools/lib/bpf/libbpf_internal.h
index 622892fc841d..fa25e1232bc8 100644
--- a/tools/lib/bpf/libbpf_internal.h
+++ b/tools/lib/bpf/libbpf_internal.h
@@ -361,10 +361,20 @@ enum kern_feature_id {
 	__FEAT_CNT,
 };
 
-struct kern_feature_cache;
+enum kern_feature_result {
+	FEAT_UNKNOWN = 0,
+	FEAT_SUPPORTED = 1,
+	FEAT_MISSING = 2,
+};
+
+struct kern_feature_cache {
+	enum kern_feature_result res[__FEAT_CNT];
+};
+
 bool feat_supported(struct kern_feature_cache *cache, enum kern_feature_id feat_id);
 bool kernel_supports(const struct bpf_object *obj, enum kern_feature_id feat_id);
 
+int probe_kern_syscall_wrapper(void);
 int probe_memcg_account(void);
 int bump_rlimit_memlock(void);
 
@@ -626,4 +636,6 @@ int elf_resolve_syms_offsets(const char *binary_path, int cnt,
 int elf_resolve_pattern_offsets(const char *binary_path, const char *pattern,
 				 unsigned long **poffsets, size_t *pcnt);
 
+int probe_fd(int fd);
+
 #endif /* __LIBBPF_LIBBPF_INTERNAL_H */