1*4882a593Smuzhiyun.. SPDX-License-Identifier: GPL-2.0 OR GFDL-1.1-no-invariants-or-later 2*4882a593Smuzhiyun.. c:namespace:: MC.request 3*4882a593Smuzhiyun 4*4882a593Smuzhiyun.. _request-func-close: 5*4882a593Smuzhiyun 6*4882a593Smuzhiyun*************** 7*4882a593Smuzhiyunrequest close() 8*4882a593Smuzhiyun*************** 9*4882a593Smuzhiyun 10*4882a593SmuzhiyunName 11*4882a593Smuzhiyun==== 12*4882a593Smuzhiyun 13*4882a593Smuzhiyunrequest-close - Close a request file descriptor 14*4882a593Smuzhiyun 15*4882a593SmuzhiyunSynopsis 16*4882a593Smuzhiyun======== 17*4882a593Smuzhiyun 18*4882a593Smuzhiyun.. code-block:: c 19*4882a593Smuzhiyun 20*4882a593Smuzhiyun #include <unistd.h> 21*4882a593Smuzhiyun 22*4882a593Smuzhiyun.. c:function:: int close( int fd ) 23*4882a593Smuzhiyun 24*4882a593SmuzhiyunArguments 25*4882a593Smuzhiyun========= 26*4882a593Smuzhiyun 27*4882a593Smuzhiyun``fd`` 28*4882a593Smuzhiyun File descriptor returned by :ref:`MEDIA_IOC_REQUEST_ALLOC`. 29*4882a593Smuzhiyun 30*4882a593SmuzhiyunDescription 31*4882a593Smuzhiyun=========== 32*4882a593Smuzhiyun 33*4882a593SmuzhiyunCloses the request file descriptor. Resources associated with the request 34*4882a593Smuzhiyunare freed once all file descriptors associated with the request are closed 35*4882a593Smuzhiyunand the driver has completed the request. 36*4882a593SmuzhiyunSee :ref:`here <media-request-life-time>` for more information. 37*4882a593Smuzhiyun 38*4882a593SmuzhiyunReturn Value 39*4882a593Smuzhiyun============ 40*4882a593Smuzhiyun 41*4882a593Smuzhiyun:c:func:`close()` returns 0 on success. On error, -1 is 42*4882a593Smuzhiyunreturned, and ``errno`` is set appropriately. Possible error codes are: 43*4882a593Smuzhiyun 44*4882a593SmuzhiyunEBADF 45*4882a593Smuzhiyun ``fd`` is not a valid open file descriptor. 46