Corinna Vinschen 725176612d Cygwin: AF_UNIX: store per-socket info in shared memory
Per-socket info in fhandler isn't correctly shared between multiple
instances of th same descriptor.  Implement a basic shared info which
is shared between all instances of a socket.

This also requires to move the fhandler_socket status bits into
fhandler_socket_wsock since the data is moved to the shared region
for AF_UNIX sockets.

Also, drop backing file requirement for socketpair server socket.
This will be handled differently in recvmsg/sendmsg.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2018-03-12 15:26:12 +01:00
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