1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later 2 .. c:namespace:: DTV.ca 3 4 .. _CA_GET_MSG: 5 6 ========== 7 CA_GET_MSG 8 ========== 9 10 Name 11 ---- 12 13 CA_GET_MSG 14 15 Synopsis 16 -------- 17 18 .. c:macro:: CA_GET_MSG 19 20 ``int ioctl(fd, CA_GET_MSG, struct ca_msg *msg)`` 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_msg`. 30 31 Description 32 ----------- 33 34 Receives a message via a CI CA module. 35 36 .. note:: 37 38 Please notice that, on most drivers, this is done by reading from 39 the /dev/adapter?/ca? device node. 40 41 Return Value 42 ------------ 43 44 On success 0 is returned. 45 46 On error -1 is returned, and the ``errno`` variable is set 47 appropriately. 48 49 Generic error codes are described at the 50 :ref:`Generic Error Codes <gen-errors>` chapter.
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