1*4882a593Smuzhiyun.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later 2*4882a593Smuzhiyun.. c:namespace:: DTV.fe 3*4882a593Smuzhiyun 4*4882a593Smuzhiyun.. _frontend_f_close: 5*4882a593Smuzhiyun 6*4882a593Smuzhiyun*************************** 7*4882a593SmuzhiyunDigital TV frontend close() 8*4882a593Smuzhiyun*************************** 9*4882a593Smuzhiyun 10*4882a593SmuzhiyunName 11*4882a593Smuzhiyun==== 12*4882a593Smuzhiyun 13*4882a593Smuzhiyunfe-close - Close a frontend device 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 :c:func:`open()`. 29*4882a593Smuzhiyun 30*4882a593SmuzhiyunDescription 31*4882a593Smuzhiyun=========== 32*4882a593Smuzhiyun 33*4882a593SmuzhiyunThis system call closes a previously opened front-end device. After 34*4882a593Smuzhiyunclosing a front-end device, its corresponding hardware might be powered 35*4882a593Smuzhiyundown automatically. 36*4882a593Smuzhiyun 37*4882a593SmuzhiyunReturn Value 38*4882a593Smuzhiyun============ 39*4882a593Smuzhiyun 40*4882a593SmuzhiyunOn success 0 is returned. 41*4882a593Smuzhiyun 42*4882a593SmuzhiyunOn error -1 is returned, and the ``errno`` variable is set 43*4882a593Smuzhiyunappropriately. 44*4882a593Smuzhiyun 45*4882a593SmuzhiyunGeneric error codes are described at the 46*4882a593Smuzhiyun:ref:`Generic Error Codes <gen-errors>` chapter. 47