1.. -*- coding: utf-8; mode: rst -*- 2 3.. _CA_GET_CAP: 4 5========== 6CA_GET_CAP 7========== 8 9Name 10---- 11 12CA_GET_CAP 13 14 15Synopsis 16-------- 17 18.. c:function:: int ioctl(fd, CA_GET_CAP, struct ca_caps *caps) 19 :name: CA_GET_CAP 20 21 22Arguments 23--------- 24 25``fd`` 26 File descriptor returned by a previous call to :c:func:`open() <dvb-ca-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