1 .. SPDX-License-Identifier: GFDL-1.1-no-invari
2 .. c:namespace:: DTV.fe
3
4 .. _FE_READ_STATUS:
5
6 ********************
7 ioctl FE_READ_STATUS
8 ********************
9
10 Name
11 ====
12
13 FE_READ_STATUS - Returns status information ab
14
15 Synopsis
16 ========
17
18 .. c:macro:: FE_READ_STATUS
19
20 ``int ioctl(int fd, FE_READ_STATUS, unsigned i
21
22 Arguments
23 =========
24
25 ``fd``
26 File descriptor returned by :c:func:`open(
27
28 ``status``
29 pointer to a bitmask integer filled with t
30 :c:type:`fe_status`.
31
32 Description
33 ===========
34
35 All Digital TV frontend devices support the ``
36 used to check about the locking status of the
37 tuned. The ioctl takes a pointer to an integer
38 written.
39
40 .. note::
41
42 The size of status is actually sizeof(enum
43 varies according with the architecture. Thi
44 future.
45
46 int fe_status
47 =============
48
49 The fe_status parameter is used to indicate th
50 state changes of the frontend hardware. It is
51 :c:type:`fe_status` values on a bitmask
52
53 Return Value
54 ============
55
56 On success 0 is returned.
57
58 On error -1 is returned, and the ``errno`` var
59 appropriately.
60
61 Generic error codes are described at the
62 :ref:`Generic Error Codes <gen-errors>` chapte
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