#include <db.h> int DB->get_dbname(DB *db, const char **filenamep, const char **dbnamep);
         The DB->get_dbname() method returns the filename and database
         name used by the DB handle.
    
        The DB->get_dbname() 
            
                  method returns a non-zero error value on failure and 0 on success.
            
            
        
    
The filenamep parameter references memory into which a pointer to the current filename is copied.