2.4.3. ioctl FE_GET_INFO¶
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.
ioctl(int fd, FE_GET_INFO, struct dvb_frontend_info *argp)¶
- File descriptor returned by open().
- pointer to struct struct
All Digital TV frontend devices support the ioctl 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.
126.96.36.199. 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
188.8.131.52. 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 Generic Error Codes chapter.