18c2ecf20Sopenharmony_ci.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later 28c2ecf20Sopenharmony_ci.. c:namespace:: DTV.fe 38c2ecf20Sopenharmony_ci 48c2ecf20Sopenharmony_ci.. _frontend_f_close: 58c2ecf20Sopenharmony_ci 68c2ecf20Sopenharmony_ci*************************** 78c2ecf20Sopenharmony_ciDigital TV frontend close() 88c2ecf20Sopenharmony_ci*************************** 98c2ecf20Sopenharmony_ci 108c2ecf20Sopenharmony_ciName 118c2ecf20Sopenharmony_ci==== 128c2ecf20Sopenharmony_ci 138c2ecf20Sopenharmony_cife-close - Close a frontend 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_ciThis system call closes a previously opened front-end device. After 348c2ecf20Sopenharmony_ciclosing a front-end device, its corresponding hardware might be powered 358c2ecf20Sopenharmony_cidown automatically. 368c2ecf20Sopenharmony_ci 378c2ecf20Sopenharmony_ciReturn Value 388c2ecf20Sopenharmony_ci============ 398c2ecf20Sopenharmony_ci 408c2ecf20Sopenharmony_ciOn success 0 is returned. 418c2ecf20Sopenharmony_ci 428c2ecf20Sopenharmony_ciOn error -1 is returned, and the ``errno`` variable is set 438c2ecf20Sopenharmony_ciappropriately. 448c2ecf20Sopenharmony_ci 458c2ecf20Sopenharmony_ciGeneric error codes are described at the 468c2ecf20Sopenharmony_ci:ref:`Generic Error Codes <gen-errors>` chapter. 47