| .. -*- coding: utf-8; mode: rst -*- |
| |
| .. _FE_GET_FRONTEND: |
| |
| *************** |
| FE_GET_FRONTEND |
| *************** |
| |
| Name |
| ==== |
| |
| FE_GET_FRONTEND |
| |
| |
| Synopsis |
| ======== |
| |
| .. c:function:: int ioctl(int fd, int request = FE_GET_FRONTEND, struct dvb_frontend_parameters *p) |
| |
| |
| Arguments |
| ========= |
| |
| .. flat-table:: |
| :header-rows: 0 |
| :stub-columns: 0 |
| |
| |
| - .. row 1 |
| |
| - int fd |
| |
| - File descriptor returned by a previous call to open(). |
| |
| - .. row 2 |
| |
| - int request |
| |
| - Equals :ref:`FE_SET_FRONTEND` for this |
| command. |
| |
| - .. row 3 |
| |
| - struct dvb_frontend_parameters \*p |
| |
| - Points to parameters for tuning operation. |
| |
| |
| Description |
| =========== |
| |
| This ioctl call queries the currently effective frontend parameters. For |
| this command, read-only access to the device is sufficient. |
| |
| |
| Return Value |
| ============ |
| |
| On success 0 is returned, on error -1 and the ``errno`` variable is set |
| appropriately. The generic error codes are described at the |
| :ref:`Generic Error Codes <gen-errors>` chapter. |
| |
| |
| |
| .. flat-table:: |
| :header-rows: 0 |
| :stub-columns: 0 |
| |
| |
| - .. row 1 |
| |
| - ``EINVAL`` |
| |
| - Maximum supported symbol rate reached. |
