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.

6 files changed, 7 insertions, 4 deletions

diff --git a/src/login/logind-dbus.c b/src/login/logind-dbus.c
index 0f25e2306f..7e6f6109dc 100644
--- a/src/login/logind-dbus.c
+++ b/src/login/logind-dbus.c
@@ -40,6 +40,7 @@
 #include "bus-util.h"
 #include "bus-error.h"
 #include "logind.h"
+#include "bus-errors.h"
 
 static int property_get_idle_hint(
                 sd_bus *bus,
@@ -184,7 +185,7 @@ static int method_get_session_by_pid(sd_bus *bus, sd_bus_message *message, void
 
         p = session_bus_path(session);
         if (!p)
-                return sd_bus_reply_method_errno(bus, message, -ENOMEM, NULL);
+                return sd_bus_reply_method_errno(bus, message, ENOMEM, NULL);
 
         return sd_bus_reply_method_return(bus, message, "o", p);
 }
diff --git a/src/login/logind-inhibit.c b/src/login/logind-inhibit.c
index 26cce8d7fc..1b6f1362b3 100644
--- a/src/login/logind-inhibit.c
+++ b/src/login/logind-inhibit.c
@@ -304,7 +304,7 @@ int inhibitor_create_fifo(Inhibitor *i) {
                 if (r < 0)
                         return r;
 
-                r = sd_event_source_set_priority(i->event_source, SD_PRIORITY_IDLE);
+                r = sd_event_source_set_priority(i->event_source, SD_EVENT_PRIORITY_IDLE);
                 if (r < 0)
                         return r;
         }
diff --git a/src/login/logind-seat-dbus.c b/src/login/logind-seat-dbus.c
index c59dfd9338..53141a892e 100644
--- a/src/login/logind-seat-dbus.c
+++ b/src/login/logind-seat-dbus.c
@@ -25,6 +25,7 @@
 #include "util.h"
 #include "bus-util.h"
 #include "strv.h"
+#include "bus-errors.h"
 #include "logind.h"
 #include "logind-seat.h"
 
diff --git a/src/login/logind-session-dbus.c b/src/login/logind-session-dbus.c
index fa9c0039f4..4995391443 100644
--- a/src/login/logind-session-dbus.c
+++ b/src/login/logind-session-dbus.c
@@ -25,6 +25,7 @@
 #include "util.h"
 #include "strv.h"
 #include "bus-util.h"
+#include "bus-errors.h"
 
 #include "logind.h"
 #include "logind-session.h"
diff --git a/src/login/logind-session.c b/src/login/logind-session.c
index 65cc6f3094..d3433731e5 100644
--- a/src/login/logind-session.c
+++ b/src/login/logind-session.c
@@ -864,7 +864,7 @@ int session_create_fifo(Session *s) {
                 if (r < 0)
                         return r;
 
-                r = sd_event_source_set_priority(s->fifo_event_source, SD_PRIORITY_IDLE);
+                r = sd_event_source_set_priority(s->fifo_event_source, SD_EVENT_PRIORITY_IDLE);
                 if (r < 0)
                         return r;
         }
diff --git a/src/login/logind.c b/src/login/logind.c
index 1d16eaa7b8..47b306b619 100644
--- a/src/login/logind.c
+++ b/src/login/logind.c
@@ -958,7 +958,7 @@ static int manager_dispatch_idle_action(sd_event_source *s, uint64_t t, void *us
                         return r;
                 }
 
-                r = sd_event_source_set_priority(m->idle_action_event_source, SD_PRIORITY_IDLE+10);
+                r = sd_event_source_set_priority(m->idle_action_event_source, SD_EVENT_PRIORITY_IDLE+10);
                 if (r < 0) {
                         log_error("Failed to set idle event source priority: %s", strerror(-r));
                         return r;