bus: create kdbus bus without an active policy

src/libsystemd-bus/bus-kernel.c

@@ -408,7 +408,7 @@ int bus_kernel_create(const char *name, char **s) {
         fname = alloca(offsetof(struct kdbus_cmd_fname, name) + DECIMAL_STR_MAX(uid_t) + 1 + l + 1);
         sprintf(fname->name, "%lu-%s", (unsigned long) getuid(), name);
         fname->size = offsetof(struct kdbus_cmd_fname, name) + strlen(fname->name) + 1;
-        fname->kernel_flags = KDBUS_CMD_FNAME_ACCESS_WORLD;
+        fname->kernel_flags = KDBUS_CMD_FNAME_ACCESS_WORLD | KDBUS_CMD_FNAME_POLICY_NONE;
         fname->user_flags = 0;
 
         p = strjoin("/dev/kdbus/", fname->name, "/bus", NULL);

src/libsystemd-bus/kdbus.h

@@ -201,6 +201,7 @@ enum {
 enum {
 	KDBUS_CMD_FNAME_ACCESS_GROUP	=  1,
 	KDBUS_CMD_FNAME_ACCESS_WORLD	=  2,
+	KDBUS_CMD_FNAME_POLICY_NONE	=  4,
 };
 
 struct kdbus_cmd_hello {

src/libsystemd-bus/test-bus-kernel.c

@@ -92,7 +92,7 @@ int main(int argc, char *argv[]) {
         assert_se(r >= 0);
 
         r = sd_bus_release_name(a, "net.0pointer.foobar");
-        assert_se(r < 0);
+        assert_se(r >= 0);
 
         sd_bus_unref(a);
         sd_bus_unref(b);