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.. -*- coding: utf-8; mode: rst -*-
FE_GET_INFO - Query Digital TV frontend capabilities and returns information
about the - front-end. This call only requires read-only access to the device.
.. c:function:: int ioctl( int fd, FE_GET_INFO, struct dvb_frontend_info *argp )
:name: FE_GET_INFO
File descriptor returned by :ref:`open() <frontend_f_open>`.
pointer to struct struct
All Digital TV frontend devices support the :ref:`FE_GET_INFO` ioctl. It is
used to identify kernel devices compatible with this specification and to
obtain information about driver and hardware capabilities. The ioctl
takes a pointer to dvb_frontend_info which is filled by the driver.
When the driver is not compatible with this specification the ioctl
returns an error.
frontend capabilities
Capabilities describe what a frontend can do. Some capabilities are
supported only on some specific frontend types.
The frontend capabilities are described at :c:type:`fe_caps`.
Return Value
On success 0 is returned.
On error -1 is returned, and the ``errno`` variable is set
Generic error codes are described at the
:ref:`Generic Error Codes <gen-errors>` chapter.