1*4882a593Smuzhiyun.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later 2*4882a593Smuzhiyun 3*4882a593Smuzhiyun.. _query-dvb-frontend-info: 4*4882a593Smuzhiyun 5*4882a593Smuzhiyun***************************** 6*4882a593SmuzhiyunQuerying frontend information 7*4882a593Smuzhiyun***************************** 8*4882a593Smuzhiyun 9*4882a593SmuzhiyunUsually, the first thing to do when the frontend is opened is to check 10*4882a593Smuzhiyunthe frontend capabilities. This is done using 11*4882a593Smuzhiyun:ref:`FE_GET_INFO`. This ioctl will enumerate the 12*4882a593SmuzhiyunDigital TV API version and other characteristics about the frontend, and can 13*4882a593Smuzhiyunbe opened either in read only or read/write mode. 14