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50 lines
1.1 KiB
50 lines
1.1 KiB
.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later |
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.. c:namespace:: DTV.net |
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.. _NET_GET_IF: |
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**************** |
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ioctl NET_GET_IF |
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**************** |
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Name |
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==== |
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NET_GET_IF - Read the configuration data of an interface created via - :ref:`NET_ADD_IF <net>`. |
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Synopsis |
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======== |
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.. c:macro:: NET_GET_IF |
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``int ioctl(int fd, NET_GET_IF, struct dvb_net_if *net_if)`` |
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Arguments |
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========= |
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``fd`` |
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File descriptor returned by :c:func:`open()`. |
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``net_if`` |
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pointer to struct :c:type:`dvb_net_if` |
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Description |
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=========== |
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The NET_GET_IF ioctl uses the interface number given by the struct |
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:c:type:`dvb_net_if`::ifnum field and fills the content of |
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struct :c:type:`dvb_net_if` with the packet ID and |
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encapsulation type used on such interface. If the interface was not |
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created yet with :ref:`NET_ADD_IF <net>`, it will return -1 and fill |
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the ``errno`` with ``EINVAL`` error code. |
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Return Value |
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============ |
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On success 0 is returned, and :c:type:`ca_slot_info` is filled. |
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On error -1 is returned, and the ``errno`` variable is set |
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appropriately. |
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The generic error codes are described at the |
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:ref:`Generic Error Codes <gen-errors>` chapter.
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