tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
2.. c:namespace:: DTV.fe
3
4.. _FE_GET_EVENT:
5
6************
7FE_GET_EVENT
8************
9
10Name
11====
12
13FE_GET_EVENT
14
15.. attention:: This ioctl is deprecated.
16
17Synopsis
18========
19
20.. c:macro:: FE_GET_EVENT
21
22``int ioctl(int fd, FE_GET_EVENT, struct dvb_frontend_event *ev)``
23
24Arguments
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
33Description
34===========
35
36This ioctl call returns a frontend event if available. If an event is
37not available, the behavior depends on whether the device is in blocking
38or non-blocking mode. In the latter case, the call fails immediately
39with errno set to ``EWOULDBLOCK``. In the former case, the call blocks until
40an event becomes available.
41
42Return Value
43============
44
45On success 0 is returned.
46
47On error -1 is returned, and the ``errno`` variable is set
48appropriately.
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
66Generic error codes are described at the
67:ref:`Generic Error Codes <gen-errors>` chapter.