1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
2 .. c:namespace:: DTV.ca
18 .. c:macro:: CA_SEND_MSG
20 ``int ioctl(fd, CA_SEND_MSG, struct ca_msg *msg)``
26 File descriptor returned by a previous call to :c:func:`open()`.
29 Pointer to struct :c:type:`ca_msg`.
34 Sends a message via a CI CA module.
38 Please notice that, on most drivers, this is done by writing
39 to the /dev/adapter?/ca? device node.
44 On success 0 is returned.
46 On error -1 is returned, and the ``errno`` variable is set
49 Generic error codes are described at the
50 :ref:`Generic Error Codes <gen-errors>` chapter.