lib/nfs/Glue: add EventLoop& accessor

src/lib/nfs/Glue.cxx

@@ -48,6 +48,14 @@ nfs_finish()
 	BlockingCall(nfs_glue->GetEventLoop(), [](){ nfs_glue.Destruct(); });
 }
 
+Event_Loop &
+nfs_get_event_loop()
+{
+	assert(in_use > 0);
+
+	return nfs_glue->GetEventLoop();
+}
+
 NfsConnection &
 nfs_get_connection(const char *server, const char *export_name)
 {

src/lib/nfs/Glue.hxx

@@ -32,6 +32,13 @@ nfs_init(EventLoop &event_loop);
 void
 nfs_finish();
 
+/**
+ * Return the EventLoop that was passed to nfs_init().
+ */
+gcc_const
+Event_Loop &
+nfs_get_event_loop();
+
 gcc_pure
 NfsConnection &
 nfs_get_connection(const char *server, const char *export_name);