+#include <syslog.h>
+
+#define err(format, arg...) volume_id_log(LOG_ERR, __FILE__, __LINE__, format, ##arg)
+#define info(format, arg...) volume_id_log(LOG_INFO, __FILE__, __LINE__, format, ##arg)
+#ifdef DEBUG
+#define dbg(format, arg...) volume_id_log(LOG_DEBUG, __FILE__, __LINE__, format, ##arg)
+#else
+#define dbg(format, arg...) do { } while (0)
+#endif