errno.witx

(typename $errno
    (enum (@witx tag u32)
        ;;; Success
        $ok
        ;;; Invalid argument
        $invalid_arg
        ;;; I really don't want to
        $dont_want_to
        ;;; I am physically unable to
        $physically_unable
        ;;; Well, that's a picket line alright!
        $picket_line))