18c2ecf20Sopenharmony_ci.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later 28c2ecf20Sopenharmony_ci.. c:namespace:: V4L 38c2ecf20Sopenharmony_ci 48c2ecf20Sopenharmony_ci.. _func-close: 58c2ecf20Sopenharmony_ci 68c2ecf20Sopenharmony_ci************ 78c2ecf20Sopenharmony_ciV4L2 close() 88c2ecf20Sopenharmony_ci************ 98c2ecf20Sopenharmony_ci 108c2ecf20Sopenharmony_ciName 118c2ecf20Sopenharmony_ci==== 128c2ecf20Sopenharmony_ci 138c2ecf20Sopenharmony_civ4l2-close - Close a V4L2 device 148c2ecf20Sopenharmony_ci 158c2ecf20Sopenharmony_ciSynopsis 168c2ecf20Sopenharmony_ci======== 178c2ecf20Sopenharmony_ci 188c2ecf20Sopenharmony_ci.. code-block:: c 198c2ecf20Sopenharmony_ci 208c2ecf20Sopenharmony_ci #include <unistd.h> 218c2ecf20Sopenharmony_ci 228c2ecf20Sopenharmony_ci.. c:function:: int close( int fd ) 238c2ecf20Sopenharmony_ci 248c2ecf20Sopenharmony_ciArguments 258c2ecf20Sopenharmony_ci========= 268c2ecf20Sopenharmony_ci 278c2ecf20Sopenharmony_ci``fd`` 288c2ecf20Sopenharmony_ci File descriptor returned by :c:func:`open()`. 298c2ecf20Sopenharmony_ci 308c2ecf20Sopenharmony_ciDescription 318c2ecf20Sopenharmony_ci=========== 328c2ecf20Sopenharmony_ci 338c2ecf20Sopenharmony_ciCloses the device. Any I/O in progress is terminated and resources 348c2ecf20Sopenharmony_ciassociated with the file descriptor are freed. However data format 358c2ecf20Sopenharmony_ciparameters, current input or output, control values or other properties 368c2ecf20Sopenharmony_ciremain unchanged. 378c2ecf20Sopenharmony_ci 388c2ecf20Sopenharmony_ciReturn Value 398c2ecf20Sopenharmony_ci============ 408c2ecf20Sopenharmony_ci 418c2ecf20Sopenharmony_ciThe function returns 0 on success, -1 on failure and the ``errno`` is 428c2ecf20Sopenharmony_ciset appropriately. Possible error codes: 438c2ecf20Sopenharmony_ci 448c2ecf20Sopenharmony_ciEBADF 458c2ecf20Sopenharmony_ci ``fd`` is not a valid open file descriptor. 46