1 .. -*- coding: utf-8; mode: rst -*-
18 .. c:function:: int ioctl(fd, CA_SEND_MSG, struct ca_msg *msg)
26 File descriptor returned by a previous call to :c:func:`open() <cec-open>`.
29 Pointer to struct :c:type:`ca_msg`.
35 Sends a message via a CI CA module.
39 Please notice that, on most drivers, this is done by writing
40 to the /dev/adapter?/ca? device node.
45 On success 0 is returned.
47 On error -1 is returned, and the ``errno`` variable is set
50 Generic error codes are described at the
51 :ref:`Generic Error Codes <gen-errors>` chapter.