-extern size_t lib_ring_buffer_read(struct lib_ring_buffer_backend *bufb,
- size_t offset, void *dest, size_t len);
-
-extern int __lib_ring_buffer_copy_to_user(struct lib_ring_buffer_backend *bufb,
- size_t offset, void __user *dest,
- size_t len);
+extern size_t lib_ring_buffer_read(struct lttng_ust_lib_ring_buffer_backend *bufb,
+ size_t offset, void *dest, size_t len,
+ struct lttng_ust_shm_handle *handle);