client: Invoke new_id closure arguments as pointers instead of integers

This commit adds a flags parameter to wl_closure_invoke(). The so far
added flags are ment to specify if the invokation is client side or
server side. When on the server side, closure arguments of type 'new_id'
should be invoked as a integer id while on the client side they should
be invoked as a pointer to a proxy object.

This fixes a bug happening when the address of a client side 'new_id'
proxy object did not fit in a 32 bit integer.

krh: Squashed test suite compile fix from Jason Ekstrand.

Signed-off-by: Jonas Ådahl <jadahl@gmail.com>

src/connection.c

@@ -801,7 +801,8 @@ wl_closure_lookup_objects(struct wl_closure *closure, struct wl_map *objects)
 }
 
 static void
-convert_arguments_to_ffi(const char *signature, union wl_argument *args,
+convert_arguments_to_ffi(const char *signature, uint32_t flags,
+			 union wl_argument *args,
 			 int count, ffi_type **ffi_types, void** ffi_args)
 {
 	int i;
@@ -834,8 +835,13 @@ convert_arguments_to_ffi(const char *signature, union wl_argument *args,
 			ffi_args[i] = &args[i].o;
 			break;
 		case 'n':
-			ffi_types[i] = &ffi_type_uint32;
+			if (flags & WL_CLOSURE_INVOKE_CLIENT) {
-			ffi_args[i] = &args[i].n;
+				ffi_types[i] = &ffi_type_pointer;
+				ffi_args[i] = &args[i].o;
+			} else {
+				ffi_types[i] = &ffi_type_uint32;
+				ffi_args[i] = &args[i].n;
+			}
 			break;
 		case 'a':
 			ffi_types[i] = &ffi_type_pointer;
@@ -855,7 +861,7 @@ convert_arguments_to_ffi(const char *signature, union wl_argument *args,
 
 
 void
-wl_closure_invoke(struct wl_closure *closure,
+wl_closure_invoke(struct wl_closure *closure, uint32_t flags,
 		  struct wl_object *target, void (*func)(void), void *data)
 {
 	int count;
@@ -870,7 +876,7 @@ wl_closure_invoke(struct wl_closure *closure,
 	ffi_types[1] = &ffi_type_pointer;
 	ffi_args[1] = ⌖
 
-	convert_arguments_to_ffi(closure->message->signature, closure->args,
+	convert_arguments_to_ffi(closure->message->signature, flags, closure->args,
 				 count, ffi_types + 2, ffi_args + 2);
 
 	ffi_prep_cif(&cif, FFI_DEFAULT_ABI,

src/wayland-client.c

@@ -836,7 +836,7 @@ dispatch_event(struct wl_display *display, struct wl_event_queue *queue)
 		if (wl_debug)
 			wl_closure_print(closure, &proxy->object, false);
 
-		wl_closure_invoke(closure, &proxy->object,
+		wl_closure_invoke(closure, WL_CLOSURE_INVOKE_CLIENT, &proxy->object,
 				  proxy->object.implementation[opcode],
 				  proxy->user_data);
 	}

src/wayland-private.h

@@ -129,8 +129,13 @@ wl_connection_demarshal(struct wl_connection *connection,
 int
 wl_closure_lookup_objects(struct wl_closure *closure, struct wl_map *objects);
 
+enum wl_closure_invoke_flag {
+	WL_CLOSURE_INVOKE_CLIENT = (1 << 0),
+	WL_CLOSURE_INVOKE_SERVER = (1 << 1)
+};
+
 void
-wl_closure_invoke(struct wl_closure *closure,
+wl_closure_invoke(struct wl_closure *closure, uint32_t flags,
 		  struct wl_object *target, void (*func)(void), void *data);
 int
 wl_closure_send(struct wl_closure *closure, struct wl_connection *connection);

src/wayland-server.c

@@ -277,7 +277,7 @@ wl_client_connection_data(int fd, uint32_t mask, void *data)
 		if (wl_debug)
 			wl_closure_print(closure, object, false);
 
-		wl_closure_invoke(closure, object,
+		wl_closure_invoke(closure, WL_CLOSURE_INVOKE_SERVER, object,
 				  object->implementation[opcode], client);
 
 		wl_closure_destroy(closure);

tests/connection-test.c

@@ -338,7 +338,7 @@ demarshal(struct marshal_data *data, const char *format,
 	closure = wl_connection_demarshal(data->read_connection,
 					  size, &objects, &message);
 	assert(closure);
-	wl_closure_invoke(closure, &object, func, data);
+	wl_closure_invoke(closure, WL_CLOSURE_INVOKE_SERVER, &object, func, data);
 	wl_closure_destroy(closure);
 }
 
@@ -418,7 +418,7 @@ marshal_demarshal(struct marshal_data *data,
 	object.id = msg[0];
 	closure = wl_connection_demarshal(data->read_connection,
 					  size, &objects, &message);
-	wl_closure_invoke(closure, &object, func, data);
+	wl_closure_invoke(closure, WL_CLOSURE_INVOKE_SERVER, &object, func, data);
 	wl_closure_destroy(closure);
 }
 
@@ -505,7 +505,7 @@ marshal_helper(const char *format, void *handler, ...)
 
 	assert(closure);
 	done = 0;
-	wl_closure_invoke(closure, &object, handler, &done);
+	wl_closure_invoke(closure, WL_CLOSURE_INVOKE_SERVER, &object, handler, &done);
 	wl_closure_destroy(closure);
 	assert(done);
 }

tests/os-wrappers-test.c

@@ -252,7 +252,7 @@ marshal_demarshal(struct marshal_data *data,
 	object.id = msg[0];
 	closure = wl_connection_demarshal(data->read_connection,
 					  size, &objects, &message);
-	wl_closure_invoke(closure, &object, func, data);
+	wl_closure_invoke(closure, WL_CLOSURE_INVOKE_SERVER, &object, func, data);
 	wl_closure_destroy(closure);
 }