X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Flibsystemd-bus%2Fbus-util.c;h=7a2197509254500f007b37eda785a49d69afd18d;hp=2140dbc676888c29f25a88832033bfedcae9d318;hb=5fd38859b30b95008e483109578c7fef2b5072f3;hpb=21586b77de9bad401f245dd55b75cedb0c2e9b7c;ds=sidebyside

diff --git a/src/libsystemd-bus/bus-util.c b/src/libsystemd-bus/bus-util.c
index 2140dbc67..7a2197509 100644
--- a/src/libsystemd-bus/bus-util.c
+++ b/src/libsystemd-bus/bus-util.c
@@ -103,6 +103,32 @@ int bus_event_loop_with_idle(sd_event *e, sd_bus *bus, const char *name, usec_t
         return 0;
 }
 
+int bus_name_has_owner(sd_bus *c, const char *name, sd_bus_error *error) {
+        _cleanup_bus_message_unref_ sd_bus_message *rep = NULL;
+        int r, has_owner = 0;
+
+        assert(c);
+        assert(name);
+
+        r = sd_bus_call_method(c,
+                               "org.freedesktop.DBus",
+                               "/org/freedesktop/dbus",
+                               "org.freedesktop.DBus",
+                               "NameHasOwner",
+                               error,
+                               &rep,
+                               "s",
+                               name);
+        if (r < 0)
+                return r;
+
+        r = sd_bus_message_read_basic(rep, 'b', &has_owner);
+        if (r < 0)
+                return sd_bus_error_set_errno(error, r);
+
+        return has_owner;
+}
+
 int bus_verify_polkit(
                 sd_bus *bus,
                 sd_bus_message *m,
@@ -206,7 +232,6 @@ static void async_polkit_query_free(sd_bus *b, AsyncPolkitQuery *q) {
 
 static int async_polkit_callback(sd_bus *bus, sd_bus_message *reply, void *userdata, sd_bus_error *error) {
         _cleanup_bus_error_free_ sd_bus_error error_buffer = SD_BUS_ERROR_NULL;
-        _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
         AsyncPolkitQuery *q = userdata;
         int r;