#include <db.h> int DB_ENV->get_data_dirs(DB_ENV *dbenv, const char ***dirpp);
         The DB_ENV->get_data_dirs() method returns the NULL-terminated array
         of directories.
    
         The DB_ENV->get_data_dirs() method may be called at any time during
         the life of the application.
    
         The DB_ENV->get_data_dirs() 
            
                  method returns a non-zero error value on failure and 0 on success.