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, 7 insertions, 3 deletions

diff --git a/src/core/dbus-manager.h b/src/core/dbus-manager.h
index f0dce5a2e9..ad451eb6fd 100644
--- a/src/core/dbus-manager.h
+++ b/src/core/dbus-manager.h
@@ -21,8 +21,12 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
-#include <dbus/dbus.h>
+#include "sd-bus.h"
+#include "manager.h"
 
-extern const DBusObjectPathVTable bus_manager_vtable;
+extern const sd_bus_vtable bus_manager_vtable[];
 
-extern const char bus_manager_interface[];
+int bus_manager_foreach_client(Manager *m, int (*send_message)(sd_bus *bus, const char *destination, void *userdata), void *userdata);
+
+int bus_manager_send_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);
+int bus_manager_send_reloading(Manager *m, bool active);