From 78224cd871e7ce9af628836995620abcb70e6935 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <eelco.dolstra@logicblox.com>
Date: Wed, 23 Jul 2014 19:26:34 +0200
Subject: [PATCH] nix-store --serve: Monitor for client disconnects
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This is necessary because build-remote.pl now builds via ‘nix-store
--serve’. So if a build hangs without writing to stdout/stderr, and
the client disconnects, then we need to detect that.
---
 src/nix-store/nix-store.cc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/nix-store/nix-store.cc b/src/nix-store/nix-store.cc
index 048f5c603..25a955e09 100644
--- a/src/nix-store/nix-store.cc
+++ b/src/nix-store/nix-store.cc
@@ -8,6 +8,7 @@
 #include "util.hh"
 #include "serve-protocol.hh"
 #include "worker-protocol.hh"
+#include "monitor-fd.hh"
 
 #include <iostream>
 #include <algorithm>
@@ -879,6 +880,8 @@ static void opServe(Strings opFlags, Strings opArgs)
     FdSource in(STDIN_FILENO);
     FdSink out(STDOUT_FILENO);
 
+    MonitorFdHup monitor(in.fd);
+
     /* Exchange the greeting. */
     unsigned int magic = readInt(in);
     if (magic != SERVE_MAGIC_1) throw Error("protocol mismatch");