1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
2 .. c:namespace:: DTV.ca
18 .. c:macro:: CA_SET_DESCR
20 ``int ioctl(fd, CA_SET_DESCR, struct ca_descr *desc)``
26 File descriptor returned by a previous call to :c:func:`open()`.
29 Pointer to struct :c:type:`ca_descr`.
34 CA_SET_DESCR is used for feeding descrambler CA slots with descrambling
35 keys (referred as control words).
40 On success 0 is returned.
42 On error -1 is returned, and the ``errno`` variable is set
45 Generic error codes are described at the
46 :ref:`Generic Error Codes <gen-errors>` chapter.