parse_options
void parse_options(struct packet *);
parse_options(&tp);
void parse_options(struct packet *);
if (! fstype->parse_options(p, &fsoptions))
int (*parse_options)(const char *, fsinfo_t *);
int parse_options(struct tftp_client *, char *, size_t,
if (parse_options(client, cp, size, options)) {