DIRPATH
sprintf(filename, "%s/%s_%ld", DIRPATH, UNDO_NAME, key);
sprintf(filename, "%s/%s_%ld", DIRPATH, SHM_NAME, key);
sprintf(filename, "%s/%s_%ld", DIRPATH, SEM_NAME, key);
sprintf(filename, "%s/%s_%ld", DIRPATH, MSG_NAME, key);
return (rmdir(DIRPATH));
return (mkdir(DIRPATH, 0600));
DIRPATH);