Update EbuildIpcDaemon to open files as non-blocking.

bin/ebuild-ipc.py

Index: bin/ebuild-ipc.py
diff --git a/bin/ebuild-ipc.py b/bin/ebuild-ipc.py
index d8e7e55129c24cb2899891ac312dc046adee26bf..84e7f3ba7c1135da0b8b6dadbb527530d731aaae 100755
--- a/bin/ebuild-ipc.py
+++ b/bin/ebuild-ipc.py
@@ -134,11 +134,7 @@ class EbuildIpc(object):
 
 		return os.WEXITSTATUS(wait_retval[1])
 
-	def _receive_reply(self):
-
-		# File streams are in unbuffered mode since we do atomic
-		# read and write of whole pickles.
-		input_file = open(self.ipc_out_fifo, 'rb', 0)
+	def _receive_reply(self, input_file):
 
 		# For maximum portability, use a single atomic read.
 		buf = None
@@ -192,6 +188,10 @@ class EbuildIpc(object):
 			self._no_daemon_msg()
 			return 2
 
+		# File streams are in unbuffered mode since we do atomic
+		# read and write of whole pickles.
+		input_file = open(self.ipc_out_fifo, 'rb', 0)
+
 		# Use forks so that the child process can handle blocking IO
 		# un-interrupted, while the parent handles all timeout
 		# considerations. This helps to avoid possible race conditions
@@ -231,7 +231,7 @@ class EbuildIpc(object):
 
 		if pid == 0:
 			os.close(pr)
-			retval = self._receive_reply()
+			retval = self._receive_reply(input_file)
 			os._exit(retval)
 
 		os.close(pw)