1 .. Permission is granted to copy, distribute and/or modify this
2 .. document under the terms of the GNU Free Documentation License,
3 .. Version 1.1 or any later version published by the Free Software
4 .. Foundation, with no Invariant Sections, no Front-Cover Texts
5 .. and no Back-Cover Texts. A copy of the license is included at
6 .. Documentation/media/uapi/fdl-appendix.rst.
8 .. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections
21 .. attention:: This ioctl is deprecated.
27 .. c:function:: int ioctl(int fd, FE_GET_FRONTEND, struct dvb_frontend_parameters *p)
28 :name: FE_GET_FRONTEND
35 File descriptor returned by :c:func:`open() <dvb-fe-open>`.
39 Points to parameters for tuning operation.
45 This ioctl call queries the currently effective frontend parameters. For
46 this command, read-only access to the device is sufficient.
52 On success 0 is returned.
54 On error -1 is returned, and the ``errno`` variable is set
66 - Maximum supported symbol rate reached.
68 Generic error codes are described at the
69 :ref:`Generic Error Codes <gen-errors>` chapter.