definit_open
if (definit_open(ENVFILE, &dstate) != 0) {
if (definit_open(DEFINIT_DEFAULT_FILE, &dstate) != 0) {
int definit_open(const char *, void **);
if (definit_open(DEFINIT_DEFAULT_FILE, &dstate) != 0) {
if (definit_open(argv[1], &state) != 0)