DON'T USE THIS -- Providing some missing POSIX File syscalls.

src/shared/platform/win/nacl_host_dir.c

 /*
  * Copyright (c) 2012 The Native Client Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 /*
  * NaCl Service Runtime.  Directory descriptor / Handle abstraction.
  */
 #include "native_client/src/include/portability.h"
@@ skipping 252 matching lines @@
 int NaClHostDirClose(struct NaClHostDir *d) {
   if (NULL == d) {
     NaClLog(LOG_FATAL, "NaClHostDirClose: 'this' is NULL\n");
   }
   NaClMutexDtor(&d->mu);
   if (!FindClose(d->handle)) {
     return -NaClXlateSystemError(GetLastError());
   }
   return 0;
 }
+
+int NaClHostDirFchdir(struct NaClHostDir *d) {
+  NaClLog(1, "NaClHostDirFchdir Not yet implemented.\n");
+  /* TODO(smklein) Implement this function */
+
+  return -NACL_ABI_EINVAL;
+}
+
+int NaClHostDirFchmod(struct NaClHostDir *d, int mode) {
+  NaClLog(1, "NaClHostDirFchmod Not yet implemented.\n");
+  /* TODO(smklein) Implement this function */
+
+  return -NACL_ABI_EINVAL;
+}
+
+int NaClHostDirFsync(struct NaClHostDir *d) {
+  DWORD err;
+
+  if (!FlushFileBuffers(d->handle)) {
+    err = GetLastError();
+    return -NaClXlateSystemError(err);
+  }
+
+  return 0;
+}
+
+int NaClHostDirFdatasync(struct NaClHostDir *d) {
+  DWORD err;
+
+  if (!FlushFileBuffers(d->handle)) {
+    err = GetLastError();
+    return -NaClXlateSystemError(err);
+  }
+
+  return 0;
+}