[PATCH bpf-next 3/6] libbpf: Add path_fd to struct bpf_link_create_opts

[Jiri Olsa <jolsa@kernel.org>]

Adding the path_fd field to struct bpf_link_create_opts and passing it
through kernel attr interface.

Assisted-by: Codex:GPT-5.4
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
 tools/lib/bpf/bpf.c | 1 +
 tools/lib/bpf/bpf.h | 3 ++-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/tools/lib/bpf/bpf.c b/tools/lib/bpf/bpf.c
index f37e3416f61a..96819c082c77 100644
--- a/tools/lib/bpf/bpf.c
+++ b/tools/lib/bpf/bpf.c
@@ -842,6 +842,7 @@ int bpf_link_create(int prog_fd, int target_fd,
 		attr.link_create.uprobe_multi.ref_ctr_offsets = ptr_to_u64(OPTS_GET(opts, uprobe_multi.ref_ctr_offsets, 0));
 		attr.link_create.uprobe_multi.cookies = ptr_to_u64(OPTS_GET(opts, uprobe_multi.cookies, 0));
 		attr.link_create.uprobe_multi.pid = OPTS_GET(opts, uprobe_multi.pid, 0);
+		attr.link_create.uprobe_multi.path_fd = OPTS_GET(opts, uprobe_multi.path_fd, 0);
 		if (!OPTS_ZEROED(opts, uprobe_multi))
 			return libbpf_err(-EINVAL);
 		break;
diff --git a/tools/lib/bpf/bpf.h b/tools/lib/bpf/bpf.h
index 012354131cf6..7534a593edae 100644
--- a/tools/lib/bpf/bpf.h
+++ b/tools/lib/bpf/bpf.h
@@ -444,6 +444,7 @@ struct bpf_link_create_opts {
 			const unsigned long *ref_ctr_offsets;
 			const __u64 *cookies;
 			__u32 pid;
+			__u32 path_fd;
 		} uprobe_multi;
 		struct {
 			__u64 cookie;
@@ -477,7 +478,7 @@ struct bpf_link_create_opts {
 	};
 	size_t :0;
 };
-#define bpf_link_create_opts__last_field uprobe_multi.pid
+#define bpf_link_create_opts__last_field uprobe_multi.path_fd
 
 LIBBPF_API int bpf_link_create(int prog_fd, int target_fd,
 			       enum bpf_attach_type attach_type,
-- 
2.54.0