tethering: Fix handling of undefined DBUS_TYPE_UNIX_FD

diff --git a/src/tethering.c b/src/tethering.c
index c7f4f10..e9f4869 100644 (file)
--- a/src/tethering.c
+++ b/src/tethering.c
@@ -41,6 +41,10 @@
 
 #include <gdbus.h>
 
+#ifndef DBUS_TYPE_UNIX_FD
+#define DBUS_TYPE_UNIX_FD -1
+#endif
+
 #define BRIDGE_PROC_DIR "/proc/sys/net/bridge"
 
 #define BRIDGE_NAME "tether"
@@ -513,6 +517,9 @@ int __connman_private_network_request(DBusMessage *msg, const char *owner)
        char *iface = NULL;
        int index, fd, err;
 
+       if (DBUS_TYPE_UNIX_FD < 0)
+               return -EINVAL;
+
        pn = g_hash_table_lookup(pn_hash, owner);
        if (pn != NULL)
                return -EEXIST;