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