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1.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later2.. c:namespace:: DTV.ca3 4.. _CA_GET_CAP:5 6==========7CA_GET_CAP8==========9 10Name11----12 13CA_GET_CAP14 15Synopsis16--------17 18.. c:macro:: CA_GET_CAP19 20``int ioctl(fd, CA_GET_CAP, struct ca_caps *caps)``21 22Arguments23---------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 31Description32-----------33 34Queries the Kernel for information about the available CA and descrambler35slots, and their types.36 37Return Value38------------39 40On success 0 is returned and :c:type:`ca_caps` is filled.41 42On error, -1 is returned and the ``errno`` variable is set43appropriately.44 45The generic error codes are described at the46:ref:`Generic Error Codes <gen-errors>` chapter.47