From e7bad10c12ce9b5d424ac273c1c977b88469d46c 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 136a03548..16c8f3fc1 100644
--- a/src/util.cpp
+++ b/src/util.cpp
@@ -1156,6 +1156,8 @@ 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