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, 5 insertions, 12 deletions

diff --git a/src/core/dbus-kill.h b/src/core/dbus-kill.h
index 7676d98e91..7c15f3a90b 100644
--- a/src/core/dbus-kill.h
+++ b/src/core/dbus-kill.h
@@ -21,17 +21,10 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
-#include <dbus/dbus.h>
+#include "sd-bus.h"
+#include "unit.h"
+#include "kill.h"
 
-#include "manager.h"
-#include "dbus-common.h"
+extern const sd_bus_vtable bus_kill_vtable[];
 
-#define BUS_KILL_CONTEXT_INTERFACE                                      \
-        "  <property name=\"KillMode\" type=\"s\" access=\"read\"/>\n"  \
-        "  <property name=\"KillSignal\" type=\"i\" access=\"read\"/>\n" \
-        "  <property name=\"SendSIGKILL\" type=\"b\" access=\"read\"/>\n" \
-        "  <property name=\"SendSIGHUP\" type=\"b\" access=\"read\"/>\n"
-
-extern const BusProperty bus_kill_context_properties[];
-
-int bus_kill_context_set_transient_property(Unit *u, KillContext *c, const char *name, DBusMessageIter *i, UnitSetPropertiesMode mode, DBusError *error);
+int bus_kill_context_set_transient_property(Unit *u, KillContext *c, const char *name, sd_bus_message *message, UnitSetPropertiesMode mode, sd_bus_error *error);