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