core: always consider clients that pinned a unit to be subscribers

If a client pins a unit, then it makes sense to also implicitly make it
a subscriber. This is useful for clients that just want to watch one
specific unit: they can pin it and receive its messages.

2 files changed, 3 insertions, 2 deletions

diff --git a/src/core/dbus-unit.c b/src/core/dbus-unit.c
index f1306a023f..f15bb2196c 100644
--- a/src/core/dbus-unit.c
+++ b/src/core/dbus-unit.c
@@ -1131,7 +1131,7 @@ void bus_unit_send_change_signal(Unit *u) {
         if (!u->id)
                 return;
 
-        r = bus_foreach_bus(u->manager, NULL, u->sent_dbus_new_signal ? send_changed_signal : send_new_signal, u);
+        r = bus_foreach_bus(u->manager, u->bus_track, u->sent_dbus_new_signal ? send_changed_signal : send_new_signal, u);
         if (r < 0)
                 log_unit_debug_errno(u, r, "Failed to send unit change signal for %s: %m", u->id);
 
@@ -1177,7 +1177,7 @@ void bus_unit_send_removed_signal(Unit *u) {
         if (!u->id)
                 return;
 
-        r = bus_foreach_bus(u->manager, NULL, send_removed_signal, u);
+        r = bus_foreach_bus(u->manager, u->bus_track, send_removed_signal, u);
         if (r < 0)
                 log_unit_debug_errno(u, r, "Failed to send unit remove signal for %s: %m", u->id);
 }
diff --git a/src/core/unit.c b/src/core/unit.c
index 174dd42819..b091a0999b 100644
--- a/src/core/unit.c
+++ b/src/core/unit.c
@@ -402,6 +402,7 @@ void unit_add_to_dbus_queue(Unit *u) {
 
         /* Shortcut things if nobody cares */
         if (sd_bus_track_count(u->manager->subscribed) <= 0 &&
+            sd_bus_track_count(u->bus_track) <= 0 &&
             set_isempty(u->manager->private_buses)) {
                 u->sent_dbus_new_signal = true;
                 return;