Add support for almost-recursive watches in Linux DirectoryWatcher

base/file_util_posix.cc

 // Copyright (c) 2006-2008 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 "base/file_util.h"
 
 #include <dirent.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <fnmatch.h>
@@ skipping 422 matching lines @@
 
 bool GetFileInfo(const FilePath& file_path, FileInfo* results) {
   struct stat64 file_info;
   if (stat64(file_path.value().c_str(), &file_info) != 0)
     return false;
   results->is_directory = S_ISDIR(file_info.st_mode);
   results->size = file_info.st_size;
   return true;
 }
 
+bool GetInode(const FilePath& path, ino_t* inode) {
+  struct stat buffer;
+  int result = stat(path.value().c_str(), &buffer);
+  if (result < 0)
+    return false;
+
+  *inode = buffer.st_ino;
+  return true;
+}
+
 FILE* OpenFile(const std::string& filename, const char* mode) {
   return OpenFile(FilePath(filename), mode);
 }
 
 FILE* OpenFile(const FilePath& filename, const char* mode) {
   return fopen(filename.value().c_str(), mode);
 }
 
 int ReadFile(const FilePath& filename, char* data, int size) {
   int fd = open(filename.value().c_str(), O_RDONLY);
@@ skipping 179 matching lines @@
     munmap(data_, length_);
   if (file_ != -1)
     close(file_);
 
   data_ = NULL;
   length_ = 0;
   file_ = -1;
 }
 
 } // namespace file_util