int for_each_admissible_user(int (*func)(struct user_info *, void *),
void *data);
int parse_uid_arg(const char *orig_arg, struct uid_range **ur);
int for_each_admissible_user(int (*func)(struct user_info *, void *),
void *data);
int parse_uid_arg(const char *orig_arg, struct uid_range **ur);