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QNX Software Development Platform
QNX SDP is a cross-compiling and debugging environment, including an IDE and command-line tools, for building binary images and programs for target boards running the QNX OS 8.0.
Utilities & Libraries
Devctl and Ioctl Commands
TIOC*
TIOCLGET
Get the local modes

QNX Momentics IDE User's Guide
This User's Guide describes version 8.0 of the Integrated Development Environment (IDE) that's part of the QNX Tool Suite.
QNX Software Development Platform
QNX SDP is a cross-compiling and debugging environment, including an IDE and command-line tools, for building binary images and programs for target boards running the QNX OS 8.0.
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  - Devctl and Ioctl Commands
    - BIOC*
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    - TIOC*
      - TIOCCBRK
        Clear the break bit
      - TIOCCDTR
        Clear data terminal ready
      - TIOCDRAIN
        Wait until output has drained
      - TIOCEXCL, TIOCSINUSE
        Set exclusive use of a terminal
      - TIOCFLUSH
        Flush buffers
      - TIOCGETA
        Get the terminal properties in a termios structure
      - TIOCGETC
        Get a terminal's special characters
      - TIOCGETP
        Get a terminal's parameters
      - TIOCGLTC
        Get the local special characters
      - TIOCGETPGRP, TIOCGPGRP
        Get the process group ID associated with a device
      - TIOCGSIZE, TIOCGWINSZ
        Get the size of a character device
      - TIOCHPCL
        Hang up on last close
      - TIOCLGET
        Get the local modes
      - TIOCLSET
        Set the entire local mode word
      - TIOCMBIC
        Clear specific modem bits
      - TIOCMBIS
        Set specific modem bits
      - TIOCMGET
        Get all modem bits
      - TIOCMSET
        Set all modem bits
      - TIOCNOTTY
        Make a terminal not be the controlling terminal
      - TIOCNXCL
        Reset exclusive use of a terminal
      - TIOCOUTQ
        Get the output queue size
      - TIOCPKT
        Set or clear packet mode
      - TIOCSCTTY
        Make a terminal the controlling terminal
      - TIOCSDTR
        Set data terminal ready
      - TIOCSETA, TIOCSETAF, TIOCSETAW
        Set terminal properties from a termios structure
      - TIOCSETC
        Set a terminal's special characters
      - TIOCSETN, TIOCSETP
        Set a terminal's parameters
      - TIOCSLTC
        Set the local special characters
      - TIOCSETPGRP, TIOCSPGRP
        Set the process group ID associated with a device
      - TIOCSTART
        Start output
      - TIOCSTI
        Simulate terminal input
      - TIOCSTOP
        Stop output
      - TIOCSSIZE, TIOCSWINSZ
        Set the size of a character device
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    These libraries provide QNX helpers, including helpers that assist with logging, string conversion, and number and type sizes.
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    The QNX Cryptography Library (qcrypto) is a flexible cryptography framework that allows you to choose which cryptography provider responds to requests on a per-process basis.
  - QNX devcrypto Service
  - Utilities Reference
  - WPA Control Interface Reference
    This document provides a reference for the Wi-Fi Protected Access (WPA) control interface, which provides a C API for the WPA/IEEE 802.11i protocols in Wi-Fi client stations. Application developers who want to control WPA operations and get associated status and event data should read this reference.
- Migrating to QNX OS 8.0
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QNX Toolkit for Visual Studio Code
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QNX Hypervisor User's Guide
This User's Guide explains the QNX hypervisor architecture and provides instructions for installing and running a QNX Hypervisor system, changing system components and configuration, and using hypervisor features such as virtual devices (vdevs).
Typographical Conventions, Support, and Licensing
This section describes the typographical conventions used throughout the documentation, explains how to obtain technical support, and provides some information about licensing.

TIOCLGET

QNX SDP8.0Devctl and Ioctl CommandsDeveloper

Get the local modes

Synopsis:

#include <sys/ioctl.h>

#define TIOCLGET        _IOR('t', 124, int)

Arguments to ioctl():


Argument	Value
`fd`	A file descriptor that you obtained by opening the device
`request`	TIOCLGET
Additional argument	A pointer to an int

Description:

This command gets the current local modes. It's implemented as a call to tcgetattr() to get the current settings.

Input:

None.

Output:

The current bit settings; a combination of zero or more of the following:

ECHO: Enable echo.
ECHOE: Echo ERASE as destructive backspace.
ECHOK: Echo KILL as a line erase.
ECHONL: Echo \n, even if ECHO is off.
ICANON: Canonical input mode (line editing enabled).
IEXTEN: QNX OS extensions to POSIX are enabled.
ISIG: Enable signals.
NOFLSH: Disable flush after interrupt, quit, or suspend.
TOSTOP: Send SIGTTOU for background output.

These are the same bits that appear in the c_lflag member of the termios structure.

See also:

ioctl(), termios in the QNX OS C Library Reference

Page updated: August 11, 2025