From 8046e1ea6d185c3577f2e9001d3507931cd1d27b Mon Sep 17 00:00:00 2001
From: Stephen Hemminger <shemminger@vyatta.com>
Date: Fri, 13 Jul 2012 15:03:56 -0700
Subject: Restore original lock file semantics

Don't fail if lock file already exists
---
 src/cstore/unionfs/cstore-unionfs.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/cstore/unionfs/cstore-unionfs.cpp b/src/cstore/unionfs/cstore-unionfs.cpp
index 7cfe23d..e21e660 100644
--- a/src/cstore/unionfs/cstore-unionfs.cpp
+++ b/src/cstore/unionfs/cstore-unionfs.cpp
@@ -706,7 +706,7 @@ UnionfsCstore::getCommitLock()
   int fd;
 
   fd = open(C_COMMIT_LOCK_FILE.c_str(),
-	    O_WRONLY|O_CREAT|O_EXCL|O_CLOEXEC, 0666);
+	    O_WRONLY|O_CREAT|O_TRUNC|O_CLOEXEC, 0666);
   if (fd < 0) {
     // should not happen since all commit processes should have write access
     output_internal("getCommitLock() failed to open lock file\n");
-- 
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