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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
DCMD_ALL_*
DCMD_ALL_SETOWN
Set the owner of a file descriptor

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.
- Quickstart Guide
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  The System Architecture guide accompanies the QNX OS and is intended for both application developers and end-users.
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  The QNX System Security Guide is intended for both system integrators who are responsible for the security of a QNX OS system and developers who want to create a QNX OS resource manager free from vulnerabilities.
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  - C Library Reference
  - Devctl and Ioctl Commands
    - BIOC*
    - CAN_DEVCTL_*
    - DCMD_ALL_*
      - DCMD_ALL_FADVISE
        Pass file advice to the filesystem
      - DCMD_ALL_GETFLAGS
        Get O_* file status flags
      - DCMD_ALL_GETMOUNTFLAGS
        Get ST_* mount flags
      - DCMD_ALL_GETOWN
        Get the owner of a file descriptor
      - DCMD_ALL_SETFLAGS
        Set O_* file status flags
      - DCMD_ALL_SETOWN
        Set the owner of a file descriptor
    - DCMD_BLK_*
    - DCMD_CAM_*
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    These libraries provide QNX helpers, including helpers that assist with logging, string conversion, and number and type sizes.
  - SPI Framework Technote
  - QNX Cryptography Library
    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
QNX Software in the Cloud
QNX Software in the Cloud enables developers to use the QNX OS in the Amazon cloud environment.
QNX Toolkit for Visual Studio Code
This User's Guide describes the QNX^® Toolkit for Visual Studio Code. The guide introduces you to the QNX Toolkit by explaining the QNX development environment and how to build, run, and debug your QNX^® Operating System (OS) applications and systems.
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.

DCMD_ALL_SETOWN

QNX SDP8.0Devctl and Ioctl CommandsDeveloper

Set the owner of a file descriptor

Synopsis:

#include <sys/dcmd_all.h>

#define DCMD_ALL_SETOWN __DIOT(_DCMD_ALL, 5, pid_t)

Arguments to devctl():


Argument	Value
`filedes`	A file descriptor that you obtained by opening the device.
`dcmd`	DCMD_ALL_SETOWN
`dev_data_ptr`	A pointer to a pid_t that specifies the owner.
`n_bytes`	`sizeof(pid_t)`
`dev_info_ptr`	NULL

Description:

This command sets the owner of the given file descriptor. Clients usually use the fcntl() cover function to generate this request:

fcntl(fd, F_SETOWN, pid);

Input:

The process ID of the owner.

Output:

None.

Example:

if(devctl(fd, DCMD_ALL_SETOWN, &pid, sizeof pid, NULL) != EOK)
{
   /* Error */
}