1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later 2 .. c:namespace:: DTV.fe 3 4 .. _FE_GET_EVENT: 5 6 ************ 7 FE_GET_EVENT 8 ************ 9 10 Name 11 ==== 12 13 FE_GET_EVENT 14 15 .. attention:: This ioctl is deprecated. 16 17 Synopsis 18 ======== 19 20 .. c:macro:: FE_GET_EVENT 21 22 ``int ioctl(int fd, FE_GET_EVENT, struct dvb_frontend_event *ev)`` 23 24 Arguments 25 ========= 26 27 ``fd`` 28 File descriptor returned by :c:func:`open()`. 29 30 ``ev`` 31 Points to the location where the event, if any, is to be stored. 32 33 Description 34 =========== 35 36 This ioctl call returns a frontend event if available. If an event is 37 not available, the behavior depends on whether the device is in blocking 38 or non-blocking mode. In the latter case, the call fails immediately 39 with errno set to ``EWOULDBLOCK``. In the former case, the call blocks until 40 an event becomes available. 41 42 Return Value 43 ============ 44 45 On success 0 is returned. 46 47 On error -1 is returned, and the ``errno`` variable is set 48 appropriately. 49 50 .. flat-table:: 51 :header-rows: 0 52 :stub-columns: 0 53 54 - .. row 1 55 56 - ``EWOULDBLOCK`` 57 58 - There is no event pending, and the device is in non-blocking mode. 59 60 - .. row 2 61 62 - ``EOVERFLOW`` 63 64 - Overflow in event queue - one or more events were lost. 65 66 Generic error codes are described at the 67 :ref:`Generic Error Codes <gen-errors>` chapter.
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