| .. 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. |
