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Diffstat (limited to 'Documentation/userspace-api/media/dvb/ca-get-cap.rst')
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diff --git a/Documentation/userspace-api/media/dvb/ca-get-cap.rst b/Documentation/userspace-api/media/dvb/ca-get-cap.rst new file mode 100644 index 000000000000..b808d0592371 --- /dev/null +++ b/Documentation/userspace-api/media/dvb/ca-get-cap.rst @@ -0,0 +1,53 @@ +.. Permission is granted to copy, distribute and/or modify this +.. document under the terms of the GNU Free Documentation License, +.. Version 1.1 or any later version published by the Free Software +.. Foundation, with no Invariant Sections, no Front-Cover Texts +.. and no Back-Cover Texts. A copy of the license is included at +.. Documentation/userspace-api/media/fdl-appendix.rst. +.. +.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections + +.. _CA_GET_CAP: + +========== +CA_GET_CAP +========== + +Name +---- + +CA_GET_CAP + + +Synopsis +-------- + +.. c:function:: int ioctl(fd, CA_GET_CAP, struct ca_caps *caps) + :name: CA_GET_CAP + + +Arguments +--------- + +``fd`` + File descriptor returned by a previous call to :c:func:`open() <dvb-ca-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. |