#include <db.h> int DB->get_re_source(DB *db, const char **sourcep);
        The DB->get_re_source() method returns the source file used by the
        Recno access method. This file is configured for the Recno access
        method using the
        DB->set_re_source()
        method.
    
         The DB->get_re_source() method may be
         called only after the database has been opened.
    
         The DB->get_re_source() 
            
                  method returns a non-zero error value on failure and 0 on success.