HP-UX Reference (11i v2 07/12) - 7 Device (Special) Files, 9 General Information, Index (vol 10)

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ldterm(7) ldterm(7)
The original I/O control command and M_IOCTL
message are stored for use on
M_IOCACK.
TCGETA This command get the old System V
termio information. The ldterm module converts
the message to a POSIX
termios M_IOCTL message, then forwards the message with
the
TCGETS command. The original I/O control command and
M_IOCTL message are
stored to be used on
M_IOCACK. When it receives the matching
M_IOCACK message, the
ldterm module processes it as for a
TCGETS command, then converts the POSIX ter-
mios
information into the System V termio
information and replies.
TCSBRK The ldterm module forwards this command downstream to be handled by the driver so
that the driver has a chance to drain the data before sending an
M_IOCACK message
upstream.
TCXONC This command controls the behavior of input/output flow control. If the argument is 0 and
output is not already stopped, an
M_STOP message is sent downstream. If the argument is
1 and the 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 argu-
ment is 3 and input is stopped, an
M_STARTI message is sent downstream.
TCFLSH This command flush the input or/and output streams. If the argument is 0, an
M_FLUSH
message with a flag byte of FLUSHR is sent downstream. This M_FLUSH (FLUSHR) mes-
sage will be reflected back upstream by the driver to flush the entire input stream. If the
argument is 1, an
M_FLUSH message with a flag byte of FLUSHW is sent upstream. This
M_FLUSH (FLUSHW) message will be reflected downstream by the stream head to flush the
entire output stream.
TIOCSWINSZ This command sets the window size variables. The argument of this command takes a
pointer to a winsize structure. The ldterm module does not use the window size vari-
able, but maintains it here for any needed replies to TIOCGWINSZ commands. The
module forwards the message downstream.
TIOCGWINSZ When the ldterm module receives this command, it returns the window size variable that
was set by the last TIOCSWINSZ command. The argument of this command takes a
pointer to a winsize structure.
EUC_WSET This command sets the character widths and screen widths for the EUC character sets.
The argument of this command takes a pointer to an eucioc structure which contains the
information for setting the character widths and screen widths of the EUC character sets.
After processing the command, ldterm forwards this message downstream to the next
module.
EUC_WGET This command returns the character widths and screen widths for the EUC character sets.
This command takes a pointer to an eucioc structure via which the EUC character
widths and screen widths information will be returned.
EUC_SET_HP15
This command put ldterm to the so called HP15 mode which enable ldterm to recog-
nize the HP15_SJIS, HP15_BIG5, HP15_CCDC, and HP15_GB character sets and process
them in such a way that they behave like EUC characters. The argument for this com-
mand takes a pointer to an integer value which specify on of the above-mentioned four sup-
ported HP15 character sets. If the argument is set to HP15_ASCII, then ldterm will
switch back to normal ASCII processing. EUC_WSET is mutually exclusive with
EUC_SET_HP15 .
EUC_GET_HP15
This command returns the current HP15 character that has been set via the
EUC_SET_HP15 command. This command takes a pointer to an integer via which the
result is returned. If no previous EUC_SET_HP15 has been issued, then it will return
HP15_ASCII.
BSD 4.3 Compatible Terminal I/O Commands
The ldterm module acts on the following I/O commands, which are compatible with the BSD I/O environ-
ment:
TIOCEXCL Set ‘exclusive-use’ mode. No further opens are permitted until the file has been closed.
78 Hewlett-Packard Company − 4 − HP-UX 11i Version 2: December 2007 Update