bus: keep kernel bus fd around during entire life-time of bus

We need this since we might need to invoke the release ioctl for
messages. Since we don't want to add any locking for that we simply keep
a reference to the bus and then rely that the fd stays valid all the
time.

1 files changed, 6 insertions, 1 deletions

diff --git a/src/libsystemd-bus/bus-internal.h b/src/libsystemd-bus/bus-internal.h
index 0edb09764a..5ba32ad8fd 100644
--- a/src/libsystemd-bus/bus-internal.h
+++ b/src/libsystemd-bus/bus-internal.h
@@ -68,9 +68,14 @@ enum bus_state {
         BUS_OPENING,
         BUS_AUTHENTICATING,
         BUS_HELLO,
-        BUS_RUNNING
+        BUS_RUNNING,
+        BUS_CLOSED
 };
 
+static inline bool BUS_IS_OPEN(enum bus_state state) {
+        return state > BUS_UNSET && state < BUS_CLOSED;
+}
+
 enum bus_auth {
         _BUS_AUTH_INVALID,
         BUS_AUTH_EXTERNAL,