.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. c:namespace:: DTV.ca .. _CA_GET_DESCR_INFO: ================= CA_GET_DESCR_INFO ================= Name ---- CA_GET_DESCR_INFO Synopsis -------- .. c:macro:: CA_GET_DESCR_INFO ``int ioctl(fd, CA_GET_DESCR_INFO, struct ca_descr_info *desc)`` Arguments --------- ``fd`` File descriptor returned by a previous call to :c:func:`open()`. ``desc`` Pointer to struct :c:type:`ca_descr_info`. Description ----------- Returns information about all descrambler slots. Return Value ------------ On success 0 is returned, and :c:type:`ca_descr_info` 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.