First batch of cros-disk changes

disk-manager.cc

+// Copyright (c) 2011 The Chromium OS 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 "disk-manager.h"
+
+#include "disk.h"
+
+#include <base/logging.h>
+#include <libudev.h>
+#include <vector>
+
+
+namespace cros_disks {
+
+DiskManager::DiskManager() 
+    : udev_(udev_new()), 
+      udev_monitor_fd_(0) { 
+
+  CHECK(udev_) << "Failed to initialize udev";
+  udev_monitor_ = udev_monitor_new_from_netlink(udev_, "udev");
+  udev_monitor_filter_add_match_subsystem_devtype(udev_monitor_, "block", NULL);
+  udev_monitor_enable_receiving(udev_monitor_);
+  udev_monitor_fd_ = udev_monitor_get_fd(udev_monitor_);
+}
+
+DiskManager::~DiskManager() {
+  udev_monitor_unref(udev_monitor_);
+  udev_unref(udev_);
+}
+
+std::vector<Disk> DiskManager::EnumerateDisks() {
+  //TODO(rtc): implement this...
+  std::vector<Disk> disks;
+  return disks;
+}
+
+bool DiskManager::ProcessUdevChanges() {
+  struct udev_device *dev = udev_monitor_receive_device(udev_monitor_);
+  CHECK(dev) << "Unknown udev device";
+  LOG(INFO) << "Got Device";
+  LOG(INFO) << "   Node: " << udev_device_get_devnode(dev);
+  LOG(INFO) << "   Subsystem: " << udev_device_get_subsystem(dev);
+  LOG(INFO) << "   Devtype: " << udev_device_get_devtype(dev);
+  LOG(INFO) << "   Action: " << udev_device_get_action(dev);
+  udev_device_unref(dev);
+  return true;
+}
+
+} // namespace cros_disks