TTY Utilities

ioctl (input/output control) calls are low-level routines for handling device input and output.

The termcap and terminfo databases are used by applications to configure their terminal display appropriately.

EUC ioctl Features

The Korean Solaris operating environment uses ioctl(2) STREAMS commands for general EUC handling. The following is a summary of these ioctl calls and their effects:

Table 4-1 ioctl Requests and Descriptions

ioctl Request	Description
EUC_WGET	Get cswidth values from TTY stream
EUC_WSET	Set cswidth values for TTY stream
EUC_OXLOFF	Set code conversion to OFF
EUC_OXLON	Set code conversion to ON

Character code conversion to and from the terminal is controlled by EUC_OXLON and EUC_OXLOFF.

termcap

termcap and terminfo are the databases used to tailor the terminal characteristics for an application. The following are extensions to the termcap database:

Table 4-2 termcap Variables and Descriptions

Variable	Description
dv	Device type: language and codeset
ci	Init sequence for multiple codesets
s0	Shift into codeset 0
s1	Shift into codeset 1
s2	Shift into codeset 2
s3	Shift into codeset 3

terminfo

The following are extensions to terminfo. The s0-s3 string values are used as data announcement mechanisms for the respective code sets during terminal I/O.

Table 4-3 terminfo Variables and Definitions

Variable	Capname	Tc	Definition
device_type	devt	dv	Device type: language and codeset
code_set_init	csin	ci	Init sequence for multiple codesets
set0_des_set	s0ds	s0	Shift into codeset 0
set1_des_set	s1ds	s1	Shift into codeset 1
set2_des_set	s2ds	s2	Shift into codeset 2
set3_des_set	s3ds	s3	Shift into codeset 3