READWAIT
if (events == NULL || ((waitflg & READWAIT) == 0))
if (error = t_kspoll(tiptr, 0, READWAIT, eventp)) {
waitflg = READWAIT;
if (events == NULL || ((waitflg & READWAIT) == 0))
waitflag = READWAIT;
if ((flag & READWAIT) || (flag & GETWAIT)) {
if ((flag & READWAIT) && (stp->sd_flag & SNDMREAD)) {
if ((error = t_kspoll(tiptr, timo, READWAIT,
error = t_kspoll(tiptr, timo, READWAIT, &type);