From 84a4dd5ff08ceb7894d8dce662265d7d188e615c Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <e.dolstra@tudelft.nl>
Date: Wed, 24 Feb 2010 15:46:06 +0000
Subject: [PATCH] * Don't use fdatasync since it doesn't work on Snow Leopard.
 * Don't refer to config.h in util.hh, because config.h is not   installed
 (http://hydra.nixos.org/build/303053).

---
 configure.ac                | 1 -
 src/libstore/local-store.cc | 4 ++--
 src/libutil/util.cc         | 2 +-
 src/libutil/util.hh         | 6 ------
 4 files changed, 3 insertions(+), 10 deletions(-)

diff --git a/configure.ac b/configure.ac
index f6d983fda..46036113b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -262,7 +262,6 @@ AC_CHECK_FUNCS([setresuid setreuid lchown])
 # Nice to have, but not essential.
 AC_CHECK_FUNCS([strsignal])
 AC_CHECK_FUNCS([posix_fallocate])
-AC_CHECK_FUNCS([fdatasync])
 
 
 # This is needed if ATerm or bzip2 are static libraries,
diff --git a/src/libstore/local-store.cc b/src/libstore/local-store.cc
index 7c8db745c..a83ba55e2 100644
--- a/src/libstore/local-store.cc
+++ b/src/libstore/local-store.cc
@@ -240,7 +240,7 @@ void LocalStore::appendReferrer(const Path & from, const Path & to, bool lock)
     string s = " " + to;
     writeFull(fd, (const unsigned char *) s.c_str(), s.size());
 
-    if (doFsync) fdatasync(fd);
+    if (doFsync) fsync(fd);
 }
 
 
@@ -271,7 +271,7 @@ void LocalStore::rewriteReferrers(const Path & path, bool purge, PathSet referre
     
     writeFull(fd, (const unsigned char *) s.c_str(), s.size());
 
-    if (doFsync) fdatasync(fd);
+    if (doFsync) fsync(fd);
     
     fd.close(); /* for Windows; can't rename open file */
 
diff --git a/src/libutil/util.cc b/src/libutil/util.cc
index 8c52625a2..eec60867d 100644
--- a/src/libutil/util.cc
+++ b/src/libutil/util.cc
@@ -233,7 +233,7 @@ void writeFile(const Path & path, const string & s, bool doFsync)
     if (fd == -1)
         throw SysError(format("opening file `%1%'") % path);
     writeFull(fd, (unsigned char *) s.c_str(), s.size());
-    if (doFsync) fdatasync(fd);
+    if (doFsync) fsync(fd);
 }
 
 
diff --git a/src/libutil/util.hh b/src/libutil/util.hh
index 90132da73..f609e8944 100644
--- a/src/libutil/util.hh
+++ b/src/libutil/util.hh
@@ -1,8 +1,6 @@
 #ifndef __UTIL_H
 #define __UTIL_H
 
-#include "config.h"
-
 #include "types.hh"
 
 #include <sys/types.h>
@@ -12,10 +10,6 @@
 
 #include <cstdio>
 
-#ifndef HAVE_FDATASYNC
-#define fdatasync fsync
-#endif
-
 
 namespace nix {