.. -*- coding: utf-8; mode: rst -*- .. _CA_GET_MSG: ========== CA_GET_MSG ========== Name ---- CA_GET_MSG Synopsis -------- .. c:function:: int ioctl(fd, CA_GET_MSG, struct ca_msg *msg) :name: CA_GET_MSG Arguments --------- ``fd`` File descriptor returned by a previous call to :c:func:`open() `. ``msg`` Pointer to struct :c:type:`ca_msg`. Description ----------- Receives a message via a CI CA module. .. note:: Please notice that, on most drivers, this is done by reading from the /dev/adapter?/ca? device node. Return Value ------------ On success 0 is returned. On error -1 is returned, and the ``errno`` variable is set appropriately. Generic error codes are described at the :ref:`Generic Error Codes ` chapter.