.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later | |
.. c:namespace:: DTV.ca | |
.. _CA_GET_CAP: | |
========== | |
CA_GET_CAP | |
========== | |
Name | |
---- | |
CA_GET_CAP | |
Synopsis | |
-------- | |
.. c:macro:: CA_GET_CAP | |
``int ioctl(fd, CA_GET_CAP, struct ca_caps *caps)`` | |
Arguments | |
--------- | |
``fd`` | |
File descriptor returned by a previous call to :c:func:`open()`. | |
``caps`` | |
Pointer to struct :c:type:`ca_caps`. | |
Description | |
----------- | |
Queries the Kernel for information about the available CA and descrambler | |
slots, and their types. | |
Return Value | |
------------ | |
On success 0 is returned and :c:type:`ca_caps` is filled. | |
On error, -1 is returned and the ``errno`` variable is set | |
appropriately. | |
The generic error codes are described at the | |
:ref:`Generic Error Codes <gen-errors>` chapter. |