1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
2 .. c:namespace:: DTV.ca
18 .. c:macro:: CA_GET_DESCR_INFO
20 ``int ioctl(fd, CA_GET_DESCR_INFO, struct ca_descr_info *desc)``
26 File descriptor returned by a previous call to :c:func:`open()`.
29 Pointer to struct :c:type:`ca_descr_info`.
34 Returns information about all descrambler slots.
39 On success 0 is returned, and :c:type:`ca_descr_info` is filled.
41 On error -1 is returned, and the ``errno`` variable is set
42 appropriately. The generic error codes are described at the
43 :ref:`Generic Error Codes <gen-errors>` chapter.