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