diff -r 6c4269dca1c2 -r 48f536aefc18 tool/MasterDevice.cpp
--- a/tool/MasterDevice.cpp	Thu Sep 16 08:41:19 2010 +0200
+++ b/tool/MasterDevice.cpp	Thu Sep 16 09:08:11 2010 +0200
@@ -455,6 +455,17 @@
 
 /****************************************************************************/
 
+void MasterDevice::rescan()
+{
+    if (ioctl(fd, EC_IOCTL_MASTER_RESCAN, 0) < 0) {
+        stringstream err;
+        err << "Failed to command rescan: " << strerror(errno);
+        throw MasterDeviceException(err);
+    }
+}
+
+/****************************************************************************/
+
 void MasterDevice::sdoDownload(ec_ioctl_slave_sdo_download_t *data)
 {
     if (ioctl(fd, EC_IOCTL_SLAVE_SDO_DOWNLOAD, data) < 0) {