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67 lines
1.3 KiB
67 lines
1.3 KiB
.. 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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