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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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E
endutent()
Close the current user-information file

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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        Check to see if the effective user ID can access a file or directory
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        The end of the data segment, excluding BSS data
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        The end of the data segment, including BSS data
      - endfsent()
        Close the filesystem table (/etc/fstab) file
      - endgrent()
        Close the group database file
      - ENDIAN_BE16()
        Return a big-endian 16-bit value in native format
      - ENDIAN_BE32()
        Return a big-endian 32-bit value in native format
      - ENDIAN_BE64()
        Return a big-endian 64-bit value in native format
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        Return a little-endian 16-bit value in native format
      - ENDIAN_LE32()
        Return a little-endian 32-bit value in native format
      - ENDIAN_LE64()
        Return a little-endian 64-bit value in native format
      - ENDIAN_RET16()
        Return an endian-swapped 16-bit value
      - ENDIAN_RET32()
        Return an endian-swapped 32-bit value
      - ENDIAN_RET64()
        Return an endian-swapped 64-bit value
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        Endian-swap a 16-bit value in place
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        Endian-swap a 32-bit value in place
      - ENDIAN_SWAP64()
        Endian-swap a 64-bit value in place
      - endpwent()
        Close the password database file
      - endspent()
        Close the shadow password database file
      - endutent()
        Close the current user-information file
      - environ
        Pointer to the process's environment variables
      - erand48()
        Generate a pseudo-random double in a thread-safe manner
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        Compute the error function of a number
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        Complementary error function
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        Display a formatted error message, and then exit
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        Thread-local error variable
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        The end of the text segment
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        Execute a file
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        Execute a file
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        Execute a file
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        Execute a file
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        Execute a file
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        Execute a file
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        Execute a file
      - execvpe()
        Execute a file
      - _exit()
        Terminate the program
      - exit()
        Exit the calling program
      - exp(), expf(), expl()
        Compute the exponential function of a number
      - exp2(), exp2f(), exp2l()
        Calculate the base-2 exponential of a number
      - expm1(), expm1f(), expm1l()
        Compute the exponential of a number, then subtract 1
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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.
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  - 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.

endutent()

QNX SDP8.0C Library ReferenceAPIDeveloper

Close the current user-information file

Synopsis:

#include <utmp.h>

void endutent( void );

Library:

libc

Use the -l c option to qcc to link against this library. This library is usually included automatically.

Description:

The endutent() function closes the currently open file specified in _PATH_UTMP.

Files:

_PATH_UTMP: The name of the user information file.

Classification:

Unix


Safety:
Cancellation point	Yes
Signal handler	No
Thread	No

Page updated: August 11, 2025