Technical data

SunOS 5.5 STREAMS Modules ldterm(7M)

TCSETS/TCSETSW/TCSETSF/TCSETA/TCSETAW/TCSETAF

The parameters that control the behavior of the ldterm module are changed. If a

mode change requires options at the stream head to be changed, an

M_SETOPTS message is sent upstream. If the ICANON ﬂag is turned on or off,

the read mode at the stream head is changed to message-nondiscard or byte-

stream mode, respectively. If the TOSTOP ﬂag is turned on or off, the tostop

mode at the stream head is turned on or off, respectively. In any case, ldterm

passes the ioctl on downstream for possible additional processing.

TCFLSH

If the argument is 0, an M_FLUSH message with a ﬂag byte of FLUSHR is sent

downstream and placed on the read queue. If the argument is 1, the write queue

is ﬂushed of all its data messages and an M_FLUSH message with a ﬂag byte of

FLUSHW is sent upstream and downstream. If the argument is 2, the write

queue is ﬂushed of all its data messages and an M_FLUSH message with a ﬂag

byte of FLUSHRW is sent downstream and placed on the read queue.

TCXONC

If the argument is 0 and output is not already stopped, an M_STOP message is

sent downstream. If the argument is 1 and output is stopped, an M_START

message is sent downstream. If the argument is 2 and input is not already

stopped, an M_STOPI message is sent downstream. If the argument is 3 and

input is stopped, an M_STARTI message is sent downstream.

TCSBRK

The message is passed downstream, so the driver has a chance to drain the data

and then send and an M_IOCACK message upstream.

EUC_WSET

This call takes a pointer to an eucioc structure, and uses it to set theEUC line

discipline’s local deﬁnitionfor the code set widths to be used for subsequent

operations. Within the stream, the line discipline may optionally notify other

modules of this setting usingM_CTL messages.

EUC_WGET

This call takes a pointer to an eucioc structure, and returns in it theEUC code set

widths currently in use by the EUC line discipline.

SEE ALSO termios(3), console(7D), termio(7I)

STREAMS Programming Guide

modiﬁed 3 Jul 1990 7M-185