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

native_client_sdk/src/libraries/nacl_io/kernel_wrap_glibc.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-glibc build.
 #if defined(__native_client__) && defined(__GLIBC__)
 
@@ skipping 255 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);
   RTN_ERRNO_IF(*newfd < 0);
   return 0;
 }
 
 int WRAP(open_resource)(const char* file, int* fd) {
   *fd = ki_open_resource(file);
   RTN_ERRNO_IF(*fd < 0);
   return 0;
 }
 
@@ skipping 363 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__)