interact
if (!interact && (cmd = get_extended_line(&n, 0)) == NULL)
if (interact) {
exec_global(int interact, int gflag)
if (!interact) {
parsecmd(int interact)
doprompt = interact;
void interact(struct disklabel *, int);
interact(&lab, f);
void interact(void);
interact(); /* doesn't return */
interact(); /* doesn't return */