f9b2e8aa32
Sphinx 3.x broke support for the cdomain.py extension, as the c domain code was rewritten. Due to that, the c tags need to be re-written, in order to use the new c domain notation. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
68 lines
1.3 KiB
ReStructuredText
68 lines
1.3 KiB
ReStructuredText
.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
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.. c:namespace:: DTV.fe
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.. _FE_GET_EVENT:
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************
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FE_GET_EVENT
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************
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Name
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====
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FE_GET_EVENT
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.. attention:: This ioctl is deprecated.
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Synopsis
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========
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.. c:macro:: FE_GET_EVENT
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``int ioctl(int fd, FE_GET_EVENT, struct dvb_frontend_event *ev)``
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Arguments
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=========
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``fd``
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File descriptor returned by :c:func:`open()`.
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``ev``
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Points to the location where the event, if any, is to be stored.
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Description
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===========
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This ioctl call returns a frontend event if available. If an event is
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not available, the behavior depends on whether the device is in blocking
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or non-blocking mode. In the latter case, the call fails immediately
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with errno set to ``EWOULDBLOCK``. In the former case, the call blocks until
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an event becomes available.
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Return Value
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============
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On success 0 is returned.
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On error -1 is returned, and the ``errno`` variable is set
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appropriately.
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.. flat-table::
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:header-rows: 0
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:stub-columns: 0
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- .. row 1
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- ``EWOULDBLOCK``
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- There is no event pending, and the device is in non-blocking mode.
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- .. row 2
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- ``EOVERFLOW``
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- Overflow in event queue - one or more events were lost.
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Generic error codes are described at the
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:ref:`Generic Error Codes <gen-errors>` chapter.
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