Avoid error in forked process with dconf-service killing

gpoa/messages/__init__.py

@@ -123,6 +123,7 @@ def debug_code(code):
     debug_ids[55] = 'Run user context applier with dropped privileges'
     debug_ids[56] = 'Kill dbus-daemon and dconf-service in user context'
     debug_ids[57] = 'Found connection by org.freedesktop.DBus.GetConnectionUnixProcessID'
+    debug_ids[58] = 'Connection search return org.freedesktop.DBus.Error.NameHasNoOwner'
 
     return debug_ids.get(code, 'Unknown debug code')
 

gpoa/util/dbus.py

@@ -188,7 +188,9 @@ class dbus_session:
             pid = self.session_iface.GetConnectionUnixProcessID(connection)
             log('D57', {"pid": pid})
         except dbus.exceptions.DBusException as exc:
-            logdata = dict({'error': str(exc)})
-            log('E32', logdata)
-            raise exc
+            if exc.get_dbus_name() != 'org.freedesktop.DBus.Error.NameHasNoOwner':
+                logdata = dict({'error': str(exc)})
+                log('E32', logdata)
+                raise exc
+            log('D58', {'connection': connection})
         return int(pid)

gpoa/util/system.py

@@ -113,8 +113,12 @@ def with_privileges(username, func):
         func()
 
         # Save pid of dconf-service
-        session = dbus_session()
-        dconf_pid = session.get_connection_pid("ca.desrt.dconf")
+        dconf_connection = "ca.desrt.dconf"
+        try:
+            session = dbus_session()
+            dconf_pid = session.get_connection_pid(dconf_connection)
+        except Exception:
+            pass
 
     except Exception as exc:
         logdata = dict()