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