.Xr read 2
returns -1 with
.Va errno set to
-.Er Dv EIO
+.Er EIO
and no
signal is sent. The default action of the
.Dv SIGTTIN
.Xr write
returns -1 with
errno set to
-.Er Dv EIO
+.Er EIO
and no signal is sent.
.Pp
Certain calls that set terminal parameters are treated in the same