Add a LIBBPF_API function to retrieve the token_fd from a bpf_object.
Without this accessor, if user needs a token FD they have to get it
manually via bpf_token_create, even though a token might have been
already created by bpf_object__load.
Suggested-by: Andrii Nakryiko <andrii@xxxxxxxxxx>
Signed-off-by: Ihor Solodrai <ihor.solodrai@xxxxx>
---
tools/lib/bpf/libbpf.c | 5 +++++
tools/lib/bpf/libbpf.h | 8 ++++++++
tools/lib/bpf/libbpf.map | 1 +
3 files changed, 14 insertions(+)
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index 84d4ec0e1f60..219facd0e66e 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -9059,6 +9059,11 @@ unsigned int bpf_object__kversion(const struct bpf_object *obj)
return obj ? obj->kern_version : 0;
}
+int bpf_object__token_fd(const struct bpf_object *obj)
+{
+ return obj->token_fd ?: -1;
+}
+
struct btf *bpf_object__btf(const struct bpf_object *obj)
{
return obj ? obj->btf : NULL;
diff --git a/tools/lib/bpf/libbpf.h b/tools/lib/bpf/libbpf.h
index 6917653ef9fa..eaf1021b08ea 100644
--- a/tools/lib/bpf/libbpf.h
+++ b/tools/lib/bpf/libbpf.h
@@ -294,6 +294,14 @@ LIBBPF_API const char *bpf_object__name(const struct bpf_object *obj);
LIBBPF_API unsigned int bpf_object__kversion(const struct bpf_object *obj);
LIBBPF_API int bpf_object__set_kversion(struct bpf_object *obj, __u32 kern_version);
+/**
+ * @brief **bpf_object__token_fd** is an accessor to token FD that is
+ * created on **bpf_object__load()**
+ * @param obj Pointer to a valid BPF object
+ * @return Token FD or -1 if it wasn't set
+ */
+LIBBPF_API int bpf_object__token_fd(const struct bpf_object *obj);
+
struct btf;
LIBBPF_API struct btf *bpf_object__btf(const struct bpf_object *obj);
LIBBPF_API int bpf_object__btf_fd(const struct bpf_object *obj);
diff --git a/tools/lib/bpf/libbpf.map b/tools/lib/bpf/libbpf.map
index 8f0d9ea3b1b4..0096e483f7eb 100644
--- a/tools/lib/bpf/libbpf.map
+++ b/tools/lib/bpf/libbpf.map
@@ -423,6 +423,7 @@ LIBBPF_1.5.0 {
btf__relocate;
bpf_map__autoattach;
bpf_map__set_autoattach;
+ bpf_object__token_fd;
bpf_program__attach_sockmap;
ring__consume_n;
ring_buffer__consume_n;
--
2.34.1
