[gconf/gdbus] Implement replacement fsync() on windows, where it is not present

[Fridrich Strba <strba src gnome org>]

commit a1e41a1826de470f2eecfa2e7be7cb9cf0e2847c
Author: Fridrich Å trba <fridrich strba bluewin ch>
Date:   Fri May 28 09:18:54 2010 +0200

    Implement replacement fsync() on windows, where it is not present

 backends/markup-tree.c |   37 +++++++++++++++++++++++++++++++++++++
 gconf/gconfd.c         |   30 ++++++++++++++++++++++++++++++
 2 files changed, 67 insertions(+), 0 deletions(-)
---
diff --git a/backends/markup-tree.c b/backends/markup-tree.c
index c08d6c7..4857cae 100644
--- a/backends/markup-tree.c
+++ b/backends/markup-tree.c
@@ -34,6 +34,43 @@
 #include <stdio.h>
 #include <time.h>
 
+#ifdef G_OS_WIN32
+#include <io.h>
+#include <conio.h>
+#define _WIN32_WINNT 0x0500 
+#include <windows.h>
+
+static int
+fsync (int fd)
+{
+  HANDLE h = (HANDLE) _get_osfhandle (fd);
+  DWORD err;
+
+  if (h == INVALID_HANDLE_VALUE)
+    {
+      errno = EBADF;
+      return -1;
+    }
+
+  if (!FlushFileBuffers (h))
+    {
+      err = GetLastError ();
+      switch (err)
+        {
+           case ERROR_INVALID_HANDLE:
+             errno = EINVAL;
+             break;
+
+           default:
+             errno = EIO;
+        }
+      return -1;
+    }
+
+  return 0;
+}
+#endif
+
 typedef struct
 {
   char       *locale;
diff --git a/gconf/gconfd.c b/gconf/gconfd.c
index f5b7f9d..5d49fad 100644
--- a/gconf/gconfd.c
+++ b/gconf/gconfd.c
@@ -62,6 +62,36 @@
 #include <conio.h>
 #define _WIN32_WINNT 0x0500 
 #include <windows.h>
+
+static int
+fsync (int fd)
+{
+  HANDLE h = (HANDLE) _get_osfhandle (fd);
+  DWORD err;
+
+  if (h == INVALID_HANDLE_VALUE)
+    {
+      errno = EBADF;
+      return -1;
+    }
+
+  if (!FlushFileBuffers (h))
+    {
+      err = GetLastError ();
+      switch (err)
+        {
+           case ERROR_INVALID_HANDLE:
+             errno = EINVAL;
+             break;
+
+           default:
+             errno = EIO;
+        }
+      return -1;
+    }
+
+  return 0;
+}
 #endif
 
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