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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 // RemovableDeviceNotificationsLinux listens for mount point changes, notifies | 5 // StorageMonitorLinux listens for mount point changes, notifies listeners |
| 6 // listeners about the addition and deletion of media devices, and | 6 // about the addition and deletion of media devices, and answers queries about |
| 7 // answers queries about mounted devices. | 7 // mounted devices. |
| 8 | 8 |
| 9 #ifndef CHROME_BROWSER_STORAGE_MONITOR_REMOVABLE_DEVICE_NOTIFICATIONS_LINUX_H_ | 9 #ifndef CHROME_BROWSER_STORAGE_MONITOR_STORAGE_MONITOR_LINUX_H_ |
| 10 #define CHROME_BROWSER_STORAGE_MONITOR_REMOVABLE_DEVICE_NOTIFICATIONS_LINUX_H_ | 10 #define CHROME_BROWSER_STORAGE_MONITOR_STORAGE_MONITOR_LINUX_H_ |
| 11 | 11 |
| 12 #if defined(OS_CHROMEOS) | 12 #if defined(OS_CHROMEOS) |
| 13 #error "Use the ChromeOS-specific implementation instead." | 13 #error "Use the ChromeOS-specific implementation instead." |
| 14 #endif | 14 #endif |
| 15 | 15 |
| 16 #include <map> | 16 #include <map> |
| 17 #include <set> | 17 #include <set> |
| 18 #include <string> | 18 #include <string> |
| 19 #include <utility> | 19 #include <utility> |
| 20 | 20 |
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| 32 // Gets device information given a |device_path|. On success, fills in | 32 // Gets device information given a |device_path|. On success, fills in |
| 33 // |unique_id|, |name|, |removable| and |partition_size_in_bytes|. | 33 // |unique_id|, |name|, |removable| and |partition_size_in_bytes|. |
| 34 typedef void (*GetDeviceInfoFunc)(const base::FilePath& device_path, | 34 typedef void (*GetDeviceInfoFunc)(const base::FilePath& device_path, |
| 35 std::string* unique_id, | 35 std::string* unique_id, |
| 36 string16* name, | 36 string16* name, |
| 37 bool* removable, | 37 bool* removable, |
| 38 uint64* partition_size_in_bytes); | 38 uint64* partition_size_in_bytes); |
| 39 | 39 |
| 40 namespace chrome { | 40 namespace chrome { |
| 41 | 41 |
| 42 class RemovableDeviceNotificationsLinux | 42 class StorageMonitorLinux |
| 43 : public StorageMonitor, | 43 : public StorageMonitor, |
| 44 public base::RefCountedThreadSafe<RemovableDeviceNotificationsLinux, | 44 public base::RefCountedThreadSafe<StorageMonitorLinux, |
| 45 content::BrowserThread::DeleteOnFileThread> { | 45 content::BrowserThread::DeleteOnFileThread> { |
| 46 public: | 46 public: |
| 47 // Should only be called by browser start up code. Use GetInstance() instead. | 47 // Should only be called by browser start up code. Use GetInstance() instead. |
| 48 explicit RemovableDeviceNotificationsLinux(const base::FilePath& path); | 48 explicit StorageMonitorLinux(const base::FilePath& path); |
| 49 | 49 |
| 50 // Must be called for RemovableDeviceNotificationsLinux to work. | 50 // Must be called for StorageMonitorLinux to work. |
| 51 void Init(); | 51 void Init(); |
| 52 | 52 |
| 53 // Finds the device that contains |path| and populates |device_info|. | 53 // Finds the device that contains |path| and populates |device_info|. |
| 54 // Returns false if unable to find the device. | 54 // Returns false if unable to find the device. |
| 55 virtual bool GetStorageInfoForPath( | 55 virtual bool GetStorageInfoForPath( |
| 56 const base::FilePath& path, | 56 const base::FilePath& path, |
| 57 StorageInfo* device_info) const OVERRIDE; | 57 StorageInfo* device_info) const OVERRIDE; |
| 58 | 58 |
| 59 // Returns the storage partition size of the device present at |location|. | 59 // Returns the storage partition size of the device present at |location|. |
| 60 // If the requested information is unavailable, returns 0. | 60 // If the requested information is unavailable, returns 0. |
| 61 virtual uint64 GetStorageSize(const std::string& location) const OVERRIDE; | 61 virtual uint64 GetStorageSize(const std::string& location) const OVERRIDE; |
| 62 | 62 |
| 63 protected: | 63 protected: |
| 64 // Only for use in unit tests. | 64 // Only for use in unit tests. |
| 65 RemovableDeviceNotificationsLinux(const base::FilePath& path, | 65 StorageMonitorLinux(const base::FilePath& path, |
| 66 GetDeviceInfoFunc getDeviceInfo); | 66 GetDeviceInfoFunc getDeviceInfo); |
| 67 | 67 |
| 68 // Avoids code deleting the object while there are references to it. | 68 // Avoids code deleting the object while there are references to it. |
| 69 // Aside from the base::RefCountedThreadSafe friend class, and derived | 69 // Aside from the base::RefCountedThreadSafe friend class, and derived |
| 70 // classes, any attempts to call this dtor will result in a compile-time | 70 // classes, any attempts to call this dtor will result in a compile-time |
| 71 // error. | 71 // error. |
| 72 virtual ~RemovableDeviceNotificationsLinux(); | 72 virtual ~StorageMonitorLinux(); |
| 73 | 73 |
| 74 virtual void OnFilePathChanged(const base::FilePath& path, bool error); | 74 virtual void OnFilePathChanged(const base::FilePath& path, bool error); |
| 75 | 75 |
| 76 private: | 76 private: |
| 77 friend class base::RefCountedThreadSafe<RemovableDeviceNotificationsLinux>; | 77 friend class base::RefCountedThreadSafe<StorageMonitorLinux>; |
| 78 friend class base::DeleteHelper<RemovableDeviceNotificationsLinux>; | 78 friend class base::DeleteHelper<StorageMonitorLinux>; |
| 79 friend struct content::BrowserThread::DeleteOnThread< | 79 friend struct content::BrowserThread::DeleteOnThread< |
| 80 content::BrowserThread::FILE>; | 80 content::BrowserThread::FILE>; |
| 81 | 81 |
| 82 // Structure to save mounted device information such as device path, unique | 82 // Structure to save mounted device information such as device path, unique |
| 83 // identifier, device name and partition size. | 83 // identifier, device name and partition size. |
| 84 struct MountPointInfo { | 84 struct MountPointInfo { |
| 85 MountPointInfo(); | 85 MountPointInfo(); |
| 86 | 86 |
| 87 base::FilePath mount_device; | 87 base::FilePath mount_device; |
| 88 std::string device_id; | 88 std::string device_id; |
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| 134 // Keep in mind on Linux, a device can be mounted at multiple mount points, | 134 // Keep in mind on Linux, a device can be mounted at multiple mount points, |
| 135 // and multiple devices can be mounted at a mount point. | 135 // and multiple devices can be mounted at a mount point. |
| 136 MountMap mount_info_map_; | 136 MountMap mount_info_map_; |
| 137 | 137 |
| 138 // Because a device can be mounted to multiple places, we only want to | 138 // Because a device can be mounted to multiple places, we only want to |
| 139 // notify about one of them. If (and only if) that one is unmounted, we need | 139 // notify about one of them. If (and only if) that one is unmounted, we need |
| 140 // to notify about it's departure and notify about another one of it's mount | 140 // to notify about it's departure and notify about another one of it's mount |
| 141 // points. | 141 // points. |
| 142 MountPriorityMap mount_priority_map_; | 142 MountPriorityMap mount_priority_map_; |
| 143 | 143 |
| 144 DISALLOW_COPY_AND_ASSIGN(RemovableDeviceNotificationsLinux); | 144 DISALLOW_COPY_AND_ASSIGN(StorageMonitorLinux); |
| 145 }; | 145 }; |
| 146 | 146 |
| 147 } // namespace chrome | 147 } // namespace chrome |
| 148 | 148 |
| 149 #endif // CHROME_BROWSER_STORAGE_MONITOR_REMOVABLE_DEVICE_NOTIFICATIONS_LINUX_H
_ | 149 #endif // CHROME_BROWSER_STORAGE_MONITOR_STORAGE_MONITOR_LINUX_H_ |
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