cynara: add exception code for disconnection code.

For disconnection connections, _dbus_connection_get_dispatch_status_unlocked always returns DBUS_DISPATCH_DATA_REMAINS.
So __bus_loop_dispatch is going around in an infinite loop.
If _dbus_loop_dispatch is out of the loop, _dbus_connection_get_dispatch_status_unlocked returns DBUS_DISPATCH_COMPLETE as normal.

It is dead-lock.

======================  reproduce ==================
su - owner
dbus-send  --type=method_call  --system --dest=org.tizen.system.deviced  /Org/Tizen/System/DeviceD/Display  org.tizen.system.deviced.display.CustomBrightness
dbus-send  --type=method_call  --system --dest=org.tizen.system.deviced  /Org/Tizen/System/DeviceD/Display  org.tizen.system.deviced.display.CustomBrightness
dbus-send  --type=method_call  --system --dest=org.tizen.system.deviced  /Org/Tizen/System/DeviceD/Display  org.tizen.system.deviced.display.CustomBrightness
dbus-send  --type=method_call  --system --dest=org.tizen.system.deviced  /Org/Tizen/System/DeviceD/Display  org.tizen.system.deviced.display.CustomBrightness
dbus-send  --type=method_call  --system --dest=org.tizen.system.deviced  /Org/Tizen/System/DeviceD/Display  org.tizen.system.deviced.display.CustomBrightness
===================================================

Signed-off-by: INSUN PYO <insun.pyo@samsung.com>
Change-Id: I8565a757a62b50a27d2c6b6931e125af452ff74e

diff --git a/dbus/dbus-connection.c b/dbus/dbus-connection.c
index 9a5be33..4537edd 100644 (file)
--- a/dbus/dbus-connection.c
+++ b/dbus/dbus-connection.c
@@ -4381,7 +4381,7 @@ static DBusDispatchStatus
 _dbus_connection_get_dispatch_status_unlocked (DBusConnection *connection)
 {
   HAVE_LOCK_CHECK (connection);
-  if (connection->dispatch_disabled && dbus_connection_get_is_connected(connection))
+  if (connection->dispatch_disabled)
     return DBUS_DISPATCH_COMPLETE;
   else if (connection->n_incoming > 0)
     return DBUS_DISPATCH_DATA_REMAINS;