Based on kernel version 6.9
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. c:namespace:: DTV.fe .. _FE_GET_FRONTEND: *************** FE_GET_FRONTEND *************** Name ==== FE_GET_FRONTEND .. attention:: This ioctl is deprecated. Synopsis ======== .. c:macro:: FE_GET_FRONTEND ``int ioctl(int fd, FE_GET_FRONTEND, struct dvb_frontend_parameters *p)`` Arguments ========= ``fd`` File descriptor returned by :c:func:`open()`. ``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 is returned, and the ``errno`` variable is set appropriately. .. flat-table:: :header-rows: 0 :stub-columns: 0 - .. row 1 - ``EINVAL`` - Maximum supported symbol rate reached. Generic error codes are described at the :ref:`Generic Error Codes <gen-errors>` chapter. |