[PATCH wayland] client: Invoke new_id closure arguments as pointers instead of integers

[Jonas Ådahl]

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.

Signed-off-by: Jonas Ådahl <jadahl at gmail.com>
---
 src/connection.c      |   16 +++++++++++-----
 src/wayland-client.c  |    2 +-
 src/wayland-private.h |    7 ++++++-
 src/wayland-server.c  |    2 +-
 4 files changed, 19 insertions(+), 8 deletions(-)

diff --git a/src/connection.c b/src/connection.c
index e6c2b64..b952da1 100644
--- a/src/connection.c
+++ b/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;
-			ffi_args[i] = &args[i].n;
+			if (flags & WL_CLOSURE_INVOKE_CLIENT) {
+				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,
diff --git a/src/wayland-client.c b/src/wayland-client.c
index 3ead2ac..c5ad96d 100644
--- a/src/wayland-client.c
+++ b/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);
 	}
diff --git a/src/wayland-private.h b/src/wayland-private.h
index f0c9010..4b757a1 100644
--- a/src/wayland-private.h
+++ b/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);
diff --git a/src/wayland-server.c b/src/wayland-server.c
index 2f3ddc9..aaecf29 100644
--- a/src/wayland-server.c
+++ b/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);
-- 
1.7.10.4