Expose libWayland wl_display_set_default_max_buffer_size function.

wayland-backend/src/rs/server_impl/common_poll.rs

@@ -322,6 +322,8 @@ impl<D> InnerBackend<D> {
         }
         Ok(dispatched)
     }
+
+    pub fn set_max_buffer_size(&self, _: usize) {}
 }
 
 enum DispatchAction<D: 'static> {

wayland-backend/src/server_api.rs

@@ -578,6 +578,14 @@ impl<D> Backend<D> {
     pub fn dispatch_all_clients(&mut self, data: &mut D) -> std::io::Result<usize> {
         self.backend.dispatch_all_clients(data)
     }
+
+    /// Set wl_client max buffer size.
+    ///
+    /// This method will only affect connections created after the method call.
+    /// only for libwayland backend
+    pub fn set_max_buffer_size(&mut self, max_buffer_size: usize) {
+        self.backend.set_max_buffer_size(max_buffer_size);
+    }
 }
 
 // Workaround: Some versions of rustc throw a `struct is never constructed`-warning here,

wayland-backend/src/sys/server_impl/mod.rs

@@ -423,6 +423,17 @@ impl<D> InnerBackend<D> {
             Ok(ret as usize)
         }
     }
+
+    pub fn set_max_buffer_size(&mut self, max_buffer_size: usize) {
+        unsafe {
+            ffi_dispatch!(
+                wayland_server_handle(),
+                wl_display_set_default_max_buffer_size,
+                self.display_ptr,
+                max_buffer_size
+            );
+        }
+    }
 }
 
 impl<D> Drop for State<D> {

wayland-sys/src/server.rs

@@ -82,6 +82,7 @@ external_library!(WaylandServer, "wayland-server",
         fn wl_display_add_client_created_listener(*mut wl_display, *mut wl_listener) -> (),
         fn wl_display_set_global_filter(*mut wl_display, wl_display_global_filter_func_t, *mut c_void) -> (),
         fn wl_display_get_client_list(*mut wl_display) -> *mut wl_list,
+        fn wl_display_set_default_max_buffer_size(*mut wl_display, usize) -> (),
     // wl_event_loop
         fn wl_event_loop_create() -> *mut wl_event_loop,
         fn wl_event_loop_destroy(*mut wl_event_loop) -> (),