1 .. -*- coding: utf-8; mode: rst -*-
18 .. cpp:function:: int ioctl(int fd, int request = FE_GET_FRONTEND, struct dvb_frontend_parameters *p)
33 - File descriptor returned by a previous call to open().
39 - Equals :ref:`FE_SET_FRONTEND` for this
44 - struct dvb_frontend_parameters \*p
46 - Points to parameters for tuning operation.
52 This ioctl call queries the currently effective frontend parameters. For
53 this command, read-only access to the device is sufficient.
59 On success 0 is returned, on error -1 and the ``errno`` variable is set
60 appropriately. The generic error codes are described at the
61 :ref:`Generic Error Codes <gen-errors>` chapter.
74 - Maximum supported symbol rate reached.