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, 1 insertions, 1 deletions

diff --git a/src/core/mount.h b/src/core/mount.h
index a9550697e..2edb75eb5 100644
--- a/src/core/mount.h
+++ b/src/core/mount.h
@@ -107,7 +107,7 @@ struct Mount {
         MountExecCommand control_command_id;
         pid_t control_pid;
 
-        Watch timer_watch;
+        sd_event_source *timer_event_source;
 };
 
 extern const UnitVTable mount_vtable;