From d69390107a7e5e42c2cfae34fa79282a751d2dac Mon Sep 17 00:00:00 2001
From: Guido van Rossum <guido@python.org>
Date: Thu, 7 Aug 2008 18:51:38 +0000
Subject: [PATCH] Patch by Ian Charnas from issue 3517. Add F_FULLFSYNC if it
 exists (OS X only so far).

---
 Modules/fcntlmodule.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Modules/fcntlmodule.c b/Modules/fcntlmodule.c
index 0c85f477e91..ab7f22d37fe 100644
--- a/Modules/fcntlmodule.c
+++ b/Modules/fcntlmodule.c
@@ -530,6 +530,11 @@ all_ins(PyObject* d)
         if (ins(d, "F_SHLCK", (long)F_SHLCK)) return -1;
 #endif
 
+/* OS X (and maybe others) let you tell the storage device to flush to physical media */
+#ifdef F_FULLFSYNC
+        if (ins(d, "F_FULLFSYNC", (long)F_FULLFSYNC)) return -1;
+#endif
+
 /* For F_{GET|SET}FL */
 #ifdef FD_CLOEXEC
         if (ins(d, "FD_CLOEXEC", (long)FD_CLOEXEC)) return -1;