[NaCl SDK] nacl_io: Change default root filesystem type from passthroughfs to memfs

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__.
 #include "nacl_io/kernel_wrap.h" // IRT_EXT is turned on in this header.
 
 // 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(NACL_IO_IRT_EXT) && defined(__native_client__) && \
@@ skipping 286 matching lines @@
   CHECK_REAL(isatty);
   // The real isatty function can be NULL (for example if we are running
   // withing chrome).
   if (REAL(isatty) == NULL) {
     *result = 0;
     return ENOTTY;
   }
   return REAL(isatty)(fd, result);
 }
 
-int _real_getdents(int fd, void* nacl_buf, size_t nacl_count, size_t* nread) {
+int _real_getdents(int fd, struct dirent* buf, size_t count, size_t* nread) {
   CHECK_REAL(getdents);
-  return REAL(getdents)(fd, static_cast<dirent*>(nacl_buf), nacl_count, nread);
+  return REAL(getdents)(fd, buf, count, nread);
 }
 
 int _real_lseek(int fd, off_t offset, int whence, off_t* new_offset) {
   CHECK_REAL(seek);
   return REAL(seek)(fd, offset, whence, new_offset);
 }
 
 int _real_mkdir(const char* pathname, mode_t mode) {
   CHECK_REAL(mkdir);
   return REAL(mkdir)(pathname, mode);
@@ skipping 58 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__) ...