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Base: Mention that sendfd & recvfd were introduced in plan9port

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Sergey Bugaev 2020-06-25 15:23:56 +03:00 • committed by Andreas Kling
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Base/usr/share/man/man2/sendfd.md
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@ -29,6 +29,10 @@ If a file descriptor is successfully received, it is returned as a positive inte
* `EINVAL`: `sockfd` does not refer to a connected or accepted socket.
* `EBUSY`: There are too many file descriptors already waiting to be received by the peer.
## History
`sendfd()` was first introduced in Plan 9 from User Space.
## See also
* [`recvfd`(2)](recvfd.md)