FE_GET_FRONTEND
| int fd | File descriptor returned by a previous call to open(). |
| int request | Equals FE_SET_FRONTEND for this command. |
| struct dvb_frontend_parameters *p | Points to parameters for tuning operation. |
This ioctl call queries the currently effective frontend parameters. For this command, read-only access to the device is sufficient.
On success 0 is returned, on error -1 and the errno variable is set appropriately. The generic error codes are described at the Generic Error Codes chapter.
| EINVAL | Maximum supported symbol rate reached. |