ca-get-cap.rst

 1.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
 2.. c:namespace:: DTV.ca
 3
 4.. _CA_GET_CAP:
 5
 6==========
 7CA_GET_CAP
 8==========
 9
10Name
11----
12
13CA_GET_CAP
14
15Synopsis
16--------
17
18.. c:macro:: CA_GET_CAP
19
20``int ioctl(fd, CA_GET_CAP, struct ca_caps *caps)``
21
22Arguments
23---------
24
25``fd``
26  File descriptor returned by a previous call to :c:func:`open()`.
27
28``caps``
29  Pointer to struct :c:type:`ca_caps`.
30
31Description
32-----------
33
34Queries the Kernel for information about the available CA and descrambler
35slots, and their types.
36
37Return Value
38------------
39
40On success 0 is returned and :c:type:`ca_caps` is filled.
41
42On error, -1 is returned and the ``errno`` variable is set
43appropriately.
44
45The generic error codes are described at the
46:ref:`Generic Error Codes <gen-errors>` chapter.