components/storage_monitor/udev_util_linux.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef COMPONENTS_STORAGE_MONITOR_UDEV_UTIL_LINUX_H_
   6 #define COMPONENTS_STORAGE_MONITOR_UDEV_UTIL_LINUX_H_
   7
   8 #include <libudev.h>
   9
  10 #include <string>
  11
  12 #include "base/memory/scoped_ptr.h"
  13
  14 namespace base {
  15 class FilePath;
  16 }
  17
  18 namespace storage_monitor {
  19
  20 // Wrapper function for udev_device_get_property_value() that also checks for
  21 // valid but empty values.
  22 std::string GetUdevDevicePropertyValue(struct udev_device* udev_device,
  23                                        const char* key);
  24
  25 // Helper for udev_device_new_from_syspath()/udev_device_get_property_value()
  26 // pair. |device_path| is the absolute path to the device, including /sys.
  27 bool GetUdevDevicePropertyValueByPath(const base::FilePath& device_path,
  28                                       const char* key,
  29                                       std::string* result);
  30
  31 }  // namespace storage_monitor
  32
  33 #endif  // COMPONENTS_STORAGE_MONITOR_UDEV_UTIL_LINUX_H_