| 12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758 |
- .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
- .. c:namespace:: DTV.fe
- .. _FE_GET_FRONTEND:
- ***************
- FE_GET_FRONTEND
- ***************
- Name
- ====
- FE_GET_FRONTEND
- .. attention:: This ioctl is deprecated.
- Synopsis
- ========
- .. c:macro:: FE_GET_FRONTEND
- ``int ioctl(int fd, FE_GET_FRONTEND, struct dvb_frontend_parameters *p)``
- Arguments
- =========
- ``fd``
- File descriptor returned by :c:func:`open()`.
- ``p``
- Points to parameters for tuning operation.
- Description
- ===========
- This ioctl call queries the currently effective frontend parameters. For
- this command, read-only access to the device is sufficient.
- Return Value
- ============
- On success 0 is returned.
- On error -1 is returned, and the ``errno`` variable is set
- appropriately.
- .. flat-table::
- :header-rows: 0
- :stub-columns: 0
- - .. row 1
- - ``EINVAL``
- - Maximum supported symbol rate reached.
- Generic error codes are described at the
- :ref:`Generic Error Codes <gen-errors>` chapter.
|
