HP-UX Reference (11i v1 00/12) - 5 Miscellaneous Topics, 7 Device (Special) Files, 9 General Information, Index (vol 9)

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ldterm(7) ldterm(7)

TIOCNXCL

Turn off ‘exclusive-use’ mode.

TIOCSETD

The ldterm module does nothing but reply to this command. In a BSD system, the command

is used to set the current line discipline type. It does not have much meaning in a STREAMS

environment, because line discipline modules are changed by popping the current module from

the stream and pushing a different one onto the stream.

TIOCGETD

In a BSD system, this command is used to get the current line discipline type. The command

does not have much meaning in a STREAMS environment. The ldterm module replies with a

value of 2 for binary compatibility, since ldterm supports job control.

TIOCFLUSH

This command ﬂush the input or/and output streams similar to that of the TCFLSH command.

The argument is a pointer to an int variable. If its value is zero, both the input and output

streams are ﬂushed by sending the appropriate FLUSHR/FLUSHW M_FLUSH messages

upstream and downstream. Otherwise, the value of the int is treated as the logical OR of the

FREAD and FWRITE ﬂags deﬁned by

<sys/file.h> . If the FREAD ﬂag is set, the input

stream is ﬂushed. If the

FWRITE ﬂag is set, the output stream is ﬂushed. Then,

ldterm ack-

nowledges the message with

M_IOCACK.

TIOCOUTQ

This command takes a pointer to an integer and returns the number of characters buffered up in

the

ldterm’s output buffer.

TIOCHPCL

This command sets the POSIX termios HUPCL ﬂag to indicate that the terminal line should

be disconnected when the last ﬁle descriptor associated with that line is closed. The ldterm

module converts the command into a compatible POSIX termios I/O control command by

sending an M_IOCTL message containing the TCSETS command with current termios set-

tings downstream.

TIOCSTART

The command restarts output. If the terminal was stopped, the ldterm module sends an

M_START message downstream.

TIOCSTOP

This command stops output. The ldterm module sends an M_STOP message downstream.

TIOCSBRK

This command sets the break condition on a line. The ldterm module sends an M_BREAK

message containing a value of 1 as data to the driver, then replies with M_IOCACK

TIOCCBRK

This command clears the break condition on a line. The ldterm module sends an M_BREAK

message containing a value of 0 (zero) as data to the driver, then replies with M_IOCACK.

TIOCSETP, TIOCSETN

These commands set the sgttyb information, deﬁned in <sys/ttold.h>

. The argument is

a pointer to an

sgttyb structure. The ldterm module converts the message to a POSIX

termios M_IOCTL message. Then, it forwards the POSIX termios M_IOCTL message

with a corresponding POSIX termios

command (i.e. TCSETSW, TCSETS). The original I/O

control command and

M_IOCTL message are stored for use on M_IOCACK.

TIOCGETP

This command returns the sgttyb information based on the interpretation of the current con-

tent of the POSIX termios structure maintained in ldterm. The argument is a pointer to

an sgttyb structure via where the information is returned.

TIOCSETC

This command sets the tchars information, deﬁned in <sys/strtio.h>. The argument is

a pointer to an tchars structure. The ldterm module converts the message to a POSIX

termios M_IOCTL message. Then, it forwards the POSIX termios M_IOCTL message

with a corresponding POSIX termios

command (i.e. TCSETS). The original I/O control com-

mand and

M_IOCTL message are stored for use on M_IOCACK.

HP-UX Release 11i: December 2000 − 5 − Section 7−−59

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