| .. 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 |
| .. c:function:: int close(int fd) |
| File descriptor returned by a previous call to :c:func:`open() <dvb-ca-open>`. |
| This system call closes a previously opened CA device. |
| On success 0 is returned. |
| On error -1 is returned, and the ``errno`` variable is set |
| Generic error codes are described at the |
| :ref:`Generic Error Codes <gen-errors>` chapter. |