.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. c:namespace:: DTV.ca

.. _CA_GET_MSG:

========== CA_GET_MSG

Name

CA_GET_MSG

Synopsis

.. c:macro:: CA_GET_MSG

int ioctl(fd, CA_GET_MSG, struct ca_msg *msg)

Arguments

fd File descriptor returned by a previous call to :c:func:open().

msg Pointer to struct :c:type:ca_msg.

Description

Receives a message via a CI CA module.

.. note::

Please notice that, on most drivers, this is done by reading from the /dev/adapter?/ca? device node.

Return Value

On success 0 is returned.

On error -1 is returned, and the errno variable is set appropriately.

Generic error codes are described at the :ref:Generic Error Codes <gen-errors> chapter.