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      1 // Copyright (c) 2012 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 CHROME_BROWSER_STORAGE_MONITOR_UDEV_UTIL_LINUX_H_
      6 #define CHROME_BROWSER_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 // Deleter for ScopedUdevObject.
     19 struct UdevDeleter {
     20   void operator()(struct udev* udev);
     21 };
     22 typedef scoped_ptr<struct udev, UdevDeleter> ScopedUdevObject;
     23 
     24 // Deleter for ScopedUdevDeviceObject().
     25 struct UdevDeviceDeleter {
     26   void operator()(struct udev_device* device);
     27 };
     28 typedef scoped_ptr<struct udev_device, UdevDeviceDeleter>
     29     ScopedUdevDeviceObject;
     30 
     31 // Wrapper function for udev_device_get_property_value() that also checks for
     32 // valid but empty values.
     33 std::string GetUdevDevicePropertyValue(struct udev_device* udev_device,
     34                                        const char* key);
     35 
     36 // Helper for udev_device_new_from_syspath()/udev_device_get_property_value()
     37 // pair. |device_path| is the absolute path to the device, including /sys.
     38 bool GetUdevDevicePropertyValueByPath(const base::FilePath& device_path,
     39                                       const char* key,
     40                                       std::string* result);
     41 
     42 #endif  // CHROME_BROWSER_STORAGE_MONITOR_UDEV_UTIL_LINUX_H_
     43