From 0e8109126372a8b1dfc0939f9672cc2d0afc2001 Mon Sep 17 00:00:00 2001
From: Gregory Maxwell <greg@xiph.org>
Date: Sun, 15 Sep 2013 20:14:06 -0700
Subject: [PATCH] More fixes for blockchain corruption on OSX.

As we'd previously learned, OSX's fsync is a data eating lie.

Since 0.8.4 we're still getting some reports of disk corruption on
 OSX but now all of it looks like the block files have gotten out of
 sync with the database. It turns out that we were still using fsync()
 on the block files, so this isn't surprising.
---
 src/util.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/util.cpp b/src/util.cpp
index 321bd25b9..f1785be24 100644
--- a/src/util.cpp
+++ b/src/util.cpp
@@ -1148,6 +1148,8 @@ void FileCommit(FILE *fileout)
 #else
     #if defined(__linux__) || defined(__NetBSD__)
     fdatasync(fileno(fileout));
+    #elif defined(__APPLE__) && defined(F_FULLFSYNC)
+    fcntl(fileno(fileout), F_FULLFSYNC, 0);
     #else
     fsync(fileno(fileout));
     #endif