Miroslav Lichvar 1b8ee3259e privops: stop helper on exit ...

With SOCK_DGRAM sockets, the helper doesn't stop as there is no error
received when the socket is closed on the daemon side.

Add a QUIT operation to the protocol which is requested when the daemon
is exiting. It has no response. Register the stopping function with
atexit() to stop the helper even when the daemon is not exiting cleanly,
e.g. due to a fatal error.

2015-12-08 17:50:09 +01:00

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