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_unregister_ioctl_handler()
Unregister an I/O control handler

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_unregister_ioctl_handler()

QNX SDP8.0C Library ReferenceAPIDeveloper

Unregister an I/O control handler

Synopsis:

#include <ioctl.h>

void _unregister_ioctl_handler( _ioctl_handler_fct *function );

Arguments:

function: An I/O control handler function of type _ioctl_handler_fct. For a description of its prototype, see _register_ioctl_handler().

Library:

libc

Description:

The _unregister_ioctl_handler() function unregisters all previously registered command ranges that were registered using the specified I/O control handler.

Classification:

QNX OS


Safety:
Cancellation point	No
Signal handler	No
Thread	Yes

Page updated: August 11, 2025