From e18be2d51775fe3c3de143707ad3e3eeeedbccc3 Mon Sep 17 00:00:00 2001
From: Jaime Melis <jmelis@opennebula.org>
Date: Tue, 18 Feb 2014 12:43:38 +0100
Subject: [PATCH] Bug #2729: Race condition in hash calculation in
 downloader.sh

---
 src/datastore_mad/remotes/downloader.sh | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/datastore_mad/remotes/downloader.sh b/src/datastore_mad/remotes/downloader.sh
index b387bd2d98..d5be9ae5c9 100755
--- a/src/datastore_mad/remotes/downloader.sh
+++ b/src/datastore_mad/remotes/downloader.sh
@@ -188,8 +188,10 @@ esac
 file_type=$(get_type "$command")
 decompressor=$(get_decompressor "$file_type")
 
+# Note: the 'cat' at the end of this pipeline forces the pipe to wait until
+# all the 'tee' processes are finished
 $command | tee >( decompress "$decompressor" "$TO" ) \
-    >( hasher $HASH_TYPE ) >/dev/null
+    >( hasher $HASH_TYPE ) | cat >/dev/null
 
 if [ "$?" != "0" ]; then
     echo "Error copying" >&2