Andreas Kling 65409e8f04 LocalSocket: Teach recvfrom() how to block if needed, and simplify it ...

If we can't already read when we enter recvfrom() on a LocalSocket,
we'll now block the current thread until we can.

Also added a buffer_for(FileDescription&) helper so that the client
and server can share some of the code. :^)

2019-09-22 21:30:30 +02:00

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