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1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
11 ----
16 --------
21 ---------
33 -----------
43 ------------
47 On error -1 is returned, and the ``errno`` variable is set
52 .. flat-table::
53 :header-rows: 0
54 :stub-columns: 0
57 - - ``EWOULDBLOCK``
58 - No data was written. This might happen if ``O_NONBLOCK`` was
63 - - ``EBUSY``
64 - This error code indicates that there are conflicting requests. The
66 front- end. Make sure that these filters are stopped and that the
70 :ref:`Generic Error Codes <gen-errors>` chapter.