1.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later 2.. c:namespace:: DTV.ca 3 4.. _CA_GET_CAP: 5 6========== 7CA_GET_CAP 8========== 9 10Name 11---- 12 13CA_GET_CAP 14 15Synopsis 16-------- 17 18.. c:macro:: CA_GET_CAP 19 20``int ioctl(fd, CA_GET_CAP, struct ca_caps *caps)`` 21 22Arguments 23--------- 24 25``fd`` 26 File descriptor returned by a previous call to :c:func:`open()`. 27 28``caps`` 29 Pointer to struct :c:type:`ca_caps`. 30 31Description 32----------- 33 34Queries the Kernel for information about the available CA and descrambler 35slots, and their types. 36 37Return Value 38------------ 39 40On success 0 is returned and :c:type:`ca_caps` is filled. 41 42On error, -1 is returned and the ``errno`` variable is set 43appropriately. 44 45The generic error codes are described at the 46:ref:`Generic Error Codes <gen-errors>` chapter. 47