1 files changed, 61 insertions, 0 deletions
diff --git a/lib/wincompat.c b/lib/wincompat.c
new file mode 100644
index 0000000..8a243f9
--- /dev/null
+++ b/lib/wincompat.c
@@ -0,0 +1,61 @@
+/* ----------------------------------------------------------------------------
+   libconfig - A library for processing structured configuration files
+   Copyright (C) 2005-2018  Mark A Lindner
+
+   This file is part of libconfig.
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public License
+   as published by the Free Software Foundation; either version 2.1 of
+   the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this library; if not, see
+   <http://www.gnu.org/licenses/>.
+   ----------------------------------------------------------------------------
+*/
+
+#include "wincompat.h"
+
+#if defined(WIN32) || defined(_WIN32) || defined(__WIN32__) \
+  || defined(WIN64) || defined(_WIN64) || defined(__WIN64__)
+
+#include <errno.h>
+#include <io.h>
+
+int fsync(int fd)
+{
+  HANDLE h = (HANDLE)_get_osfhandle(fd);
+  if(h == INVALID_HANDLE_VALUE)
+  {
+    errno = EBADF;
+    return(-1);
+  }
+
+  if(!FlushFileBuffers(h))
+  {
+    DWORD err = GetLastError();
+    switch(err)
+    {
+      case ERROR_ACCESS_DENIED:
+        return(0);
+
+      case ERROR_INVALID_HANDLE:
+        errno = EINVAL;
+        break;
+
+      default:
+        errno = EIO;
+    }
+    return(-1);
+  }
+
+  return(0);
+}
+
+#endif // WIN32 || WIN64