Added simplest device mount implementation (includes NullDevice and RandomDevice)

libraries/nacl-mounts/base/KernelProxy.cc

 /*
  * 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.
  */
 #include <assert.h>
 #include <list>
 #include <utility>
 #include "../console/ConsoleMount.h"
+#include "../dev/DevMount.h"
 #include "KernelProxy.h"
 #include "MountManager.h"
 
 static pthread_once_t kp_once_ = PTHREAD_ONCE_INIT;
 KernelProxy *KernelProxy::kp_instance_;
 
 #ifndef MAXPATHLEN
 #define MAXPATHLEN 256
 #endif
 
 KernelProxy::KernelProxy() {
   if (pthread_mutex_init(&kp_lock_, NULL)) assert(0);
   cwd_ = Path("/");
   mm_.Init();
 
   // Setup file descriptors 0, 1, and 2 for STDIN, STDOUT, and STDERR
   int ret = mkdir("/dev", 0777);
   assert(ret == 0);
+  DevMount* dev_mount = new DevMount();
+  ret = mm_.AddMount(dev_mount, "/dev");
+  assert(ret == 0);
   ret = mkdir("/dev/fd", 0777);
   assert(ret == 0);
   ConsoleMount *console_mount = new ConsoleMount();
   ret = mm_.AddMount(console_mount, "/dev/fd");
   assert(ret == 0);
   int fd = open("/dev/fd/0", O_CREAT | O_RDWR, 0);
   assert(fd == 0);
   fd = open("/dev/fd/1", O_CREAT | O_RDWR, 0);
   assert(fd == 1);
   fd = open("/dev/fd/2", O_CREAT | O_RDWR, 0);
@@ skipping 799 matching lines @@
 
 int KernelProxy::ppoll(struct pollfd *fds, nfds_t nfds,
           const struct timespec *timeout,
           const sigset_t *sigmask, size_t sigset_size) {
   errno = ENOSYS;
   fprintf(stderr, "ppoll has not been implemented!\n");
   return -1;
 }
 #endif