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 // MediaStorageUtil provides information about storage devices attached 6 // to the computer. 7 8 #ifndef COMPONENTS_STORAGE_MONITOR_MEDIA_STORAGE_UTIL_H_ 9 #define COMPONENTS_STORAGE_MONITOR_MEDIA_STORAGE_UTIL_H_ 10 11 #include <set> 12 #include <string> 13 14 #include "base/basictypes.h" 15 #include "base/callback_forward.h" 16 #include "base/files/file_path.h" 17 18 namespace storage_monitor { 19 20 class StorageInfo; 21 22 class MediaStorageUtil { 23 public: 24 typedef std::set<std::string /*device id*/> DeviceIdSet; 25 26 // Check if the file system at the passed mount point looks like a media 27 // device using the existence of DCIM directory. 28 // Returns true if it looks like a media device, otherwise returns false. 29 // Mac OS X behaves similarly, but this is not the only heuristic it uses. 30 // TODO(vandebo) Try to figure out how Mac OS X decides this, and rename 31 // if additional OS X heuristic is implemented. 32 static bool HasDcim(const base::FilePath& mount_point); 33 34 // Returns true if we will be able to create a filesystem for this device. 35 static bool CanCreateFileSystem(const std::string& device_id, 36 const base::FilePath& path); 37 38 // Removes disconnected devices from |devices| and then calls |done|. 39 static void FilterAttachedDevices(DeviceIdSet* devices, 40 const base::Closure& done); 41 42 // Given |path|, fill in |device_info|, and |relative_path| 43 // (from the root of the device). 44 static bool GetDeviceInfoFromPath(const base::FilePath& path, 45 StorageInfo* device_info, 46 base::FilePath* relative_path); 47 48 // Get a base::FilePath for the given |device_id|. If the device isn't a mass 49 // storage type, the base::FilePath will be empty. This does not check that 50 // the device is connected. 51 static base::FilePath FindDevicePathById(const std::string& device_id); 52 53 // Record device information histogram for the given |device_uuid| and 54 // |device_label|. |mass_storage| indicates whether the current device is a 55 // mass storage device, as defined by IsMassStorageDevice(). 56 static void RecordDeviceInfoHistogram(bool mass_storage, 57 const std::string& device_uuid, 58 const base::string16& device_label); 59 60 // Returns true if the |id| is both a removable device and also 61 // currently attached. 62 static bool IsRemovableStorageAttached(const std::string& id); 63 64 private: 65 DISALLOW_IMPLICIT_CONSTRUCTORS(MediaStorageUtil); 66 }; 67 68 } // namespace storage_monitor 69 70 #endif // COMPONENTS_STORAGE_MONITOR_MEDIA_STORAGE_UTIL_H_ 71
