core: convert PID 1 to libsystemd-bus

This patch converts PID 1 to libsystemd-bus and thus drops the
dependency on libdbus. The only remaining code using libdbus is a test
case that validates our bus marshalling against libdbus' marshalling,
and this dependency can be turned off.

This patch also adds a couple of things to libsystem-bus, that are
necessary to make the port work:

- Synthesizing of "Disconnected" messages when bus connections are
  severed.

- Support for attaching multiple vtables for the same interface on the
  same path.

This patch also fixes the SetDefaultTarget() and GetDefaultTarget() bus
calls which used an inappropriate signature.

As a side effect we will now generate PropertiesChanged messages which
carry property contents, rather than just invalidation information.

1 files changed, 2 insertions, 24 deletions

diff --git a/src/core/dbus.h b/src/core/dbus.h
index 6500cd7455..a3bef47d5d 100644
--- a/src/core/dbus.h
+++ b/src/core/dbus.h
@@ -21,36 +21,14 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
-#include <dbus/dbus.h>
-
 #include "manager.h"
 
+int bus_send_queued_message(Manager *m);
+
 int bus_init(Manager *m, bool try_bus_connect);
 void bus_done(Manager *m);
 
-unsigned bus_dispatch(Manager *m);
-
-void bus_watch_event(Manager *m, Watch *w, int events);
-void bus_timeout_event(Manager *m, Watch *w, int events);
-
-int bus_query_pid(Manager *m, const char *name);
-
-int bus_broadcast(Manager *m, DBusMessage *message);
-
-bool bus_has_subscriber(Manager *m);
-bool bus_connection_has_subscriber(Manager *m, DBusConnection *c);
-
 int bus_fdset_add_all(Manager *m, FDSet *fds);
 
-void bus_broadcast_finished(Manager *m, usec_t firmware_usec, usec_t loader_usec, usec_t kernel_usec, usec_t initrd_usec, usec_t userspace_usec, usec_t total_usec);
-void bus_broadcast_reloading(Manager *m, bool active);
-
-Set *bus_acquire_subscribed(Manager *m, DBusConnection *c);
-
 void bus_serialize(Manager *m, FILE *f);
 int bus_deserialize_item(Manager *m, const char *line);
-
-#define BUS_CONNECTION_SUBSCRIBED(m, c) dbus_connection_get_data((c), (m)->subscribed_data_slot)
-#define BUS_PENDING_CALL_NAME(m, p) dbus_pending_call_get_data((p), (m)->name_data_slot)
-
-extern const char * const bus_interface_table[];