sstrncpy (vl.plugin, "vmem", sizeof (vl.plugin));
if (plugin_instance != NULL)
sstrncpy (vl.plugin_instance, plugin_instance, sizeof (vl.plugin_instance));
sstrncpy (vl.plugin, "vmem", sizeof (vl.plugin));
if (plugin_instance != NULL)
sstrncpy (vl.plugin_instance, plugin_instance, sizeof (vl.plugin_instance));