Add support for simple run of "main"

native_client_sdk/src/libraries/nacl_mounts/kernel_proxy.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 "nacl_mounts/kernel_proxy.h"
 
 #include <errno.h>
 #include <fcntl.h>
 #include <pthread.h>
 #include <string.h>
@@ skipping 32 matching lines @@
   ppapi_ = ppapi;
   cwd_ = "/";
   dev_ = 1;
 
   factories_["memfs"] = MountMem::Create<MountMem>;
   factories_["dev"] = MountDev::Create<MountDev>;
 
   // Create memory mount at root
   StringMap_t smap;
   mounts_["/"] = MountMem::Create<MountMem>(dev_++, smap, ppapi_);
+  mounts_["/dev"] = MountDev::Create<MountDev>(dev_++, smap, ppapi_);
 }
 
 int KernelProxy::open(const char *path, int oflags) {
   Path rel;
 
   Mount* mnt = AcquireMountAndPath(path, &rel);
   if (mnt == NULL) return -1;
 
   MountNode* node = mnt->Open(rel, oflags);
   if (node == NULL) {
@@ skipping 310 matching lines @@
 // TODO(noelallen): Needs implementation.
 int KernelProxy::fchmod(int fd, int mode) {
   errno = EINVAL;
   return -1;
 }
 
 int KernelProxy::access(const char* path, int amode) {
   errno = EINVAL;
   return -1;
 }