1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
2 .. c:namespace:: DTV.ca
18 .. c:macro:: CA_GET_CAP
20 ``int ioctl(fd, CA_GET_CAP, struct ca_caps *caps)``
26 File descriptor returned by a previous call to :c:func:`open()`.
29 Pointer to struct :c:type:`ca_caps`.
34 Queries the Kernel for information about the available CA and descrambler
35 slots, and their types.
40 On success 0 is returned and :c:type:`ca_caps` is filled.
42 On error, -1 is returned and the ``errno`` variable is set
45 The generic error codes are described at the
46 :ref:`Generic Error Codes <gen-errors>` chapter.