.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. c:namespace:: DTV.ca .. _CA_GET_CAP: ========== CA_GET_CAP ========== Name ---- CA_GET_CAP Synopsis -------- .. c:macro:: CA_GET_CAP ``int ioctl(fd, CA_GET_CAP, struct ca_caps *caps)`` Arguments --------- ``fd`` File descriptor returned by a previous call to :c:func:`open()`. ``caps`` Pointer to struct :c:type:`ca_caps`. Description ----------- Queries the Kernel for information about the available CA and descrambler slots, and their types. Return Value ------------ On success 0 is returned and :c:type:`ca_caps` is filled. On error, -1 is returned and the ``errno`` variable is set appropriately. The generic error codes are described at the :ref:`Generic Error Codes ` chapter.