| .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later | |
| .. c:namespace:: DTV.ca | |
| .. _CA_GET_CAP: | |
| ========== | |
| CA_GET_CAP | |
| ========== | |
| Name | |
| ---- | |
| CA_GET_CAP | |
| Synopsis | |
| -------- | |
| .. c:macro:: CA_GET_CAP | |
| ``int ioctl(fd, CA_GET_CAP, struct ca_caps *caps)`` | |
| Arguments | |
| --------- | |
| ``fd`` | |
| File descriptor returned by a previous call to :c:func:`open()`. | |
| ``caps`` | |
| Pointer to struct :c:type:`ca_caps`. | |
| Description | |
| ----------- | |
| Queries the Kernel for information about the available CA and descrambler | |
| slots, and their types. | |
| Return Value | |
| ------------ | |
| On success 0 is returned and :c:type:`ca_caps` is filled. | |
| On error, -1 is returned and the ``errno`` variable is set | |
| appropriately. | |
| The generic error codes are described at the | |
| :ref:`Generic Error Codes <gen-errors>` chapter. |