Plumbing though mode parameter to open, since fusefs can make use of it.

native_client_sdk/src/libraries/nacl_io/kernel_wrap_newlib.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <sys/types.h>  // Include something that will define __GLIBC__.
 
 // The entire file is wrapped in this #if. We do this so this .cc file can be
 // compiled, even on a non-newlib build.
 #if defined(__native_client__) && !defined(__GLIBC__) && !defined(__BIONIC__)
 
@@ skipping 168 matching lines @@
 }
 
 int WRAP(munmap)(void* addr, size_t length) {
   // Always let the real munmap run on the address range. It is not an error if
   // there are no mapped pages in that range.
   ki_munmap(addr, length);
   return REAL(munmap)(addr, length);
 }
 
 int WRAP(open)(const char* pathname, int oflag, mode_t cmode, int* newfd) {
-  *newfd = ki_open(pathname, oflag);
+  *newfd = ki_open(pathname, oflag, cmode);
   ERRNO_RTN(*newfd);
 }
 
 int WRAP(stat)(const char* pathname, struct stat* buf) {
   ERRNO_RTN(ki_stat(pathname, buf));
 }
 
 int WRAP(mkdir)(const char* pathname, mode_t mode) {
   ERRNO_RTN(ki_mkdir(pathname, mode));
 }
@@ skipping 179 matching lines @@
   if (s_wrapped) {
     LOG_TRACE("kernel_wrap_uninit");
     EXPAND_SYMBOL_LIST_OPERATION(USE_REAL)
     s_wrapped = false;
   }
 }
 
 EXTERN_C_END
 
 #endif  // defined(__native_client__) && !defined(__GLIBC__) ...