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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 // MediaDeviceNotificationsLinux listens for mount point changes and notifies | 5 // MediaDeviceNotificationsLinux listens for mount point changes and notifies |
6 // the SystemMonitor about the addition and deletion of media devices. | 6 // the SystemMonitor about the addition and deletion of media devices. |
7 | 7 |
8 #ifndef CHROME_BROWSER_MEDIA_GALLERY_MEDIA_DEVICE_NOTIFICATIONS_LINUX_H_ | 8 #ifndef CHROME_BROWSER_MEDIA_GALLERY_MEDIA_DEVICE_NOTIFICATIONS_LINUX_H_ |
9 #define CHROME_BROWSER_MEDIA_GALLERY_MEDIA_DEVICE_NOTIFICATIONS_LINUX_H_ | 9 #define CHROME_BROWSER_MEDIA_GALLERY_MEDIA_DEVICE_NOTIFICATIONS_LINUX_H_ |
10 | 10 |
11 #if defined(OS_CHROMEOS) | 11 #if defined(OS_CHROMEOS) |
12 #error "Use the ChromeOS-specific implementation instead." | 12 #error "Use the ChromeOS-specific implementation instead." |
13 #endif | 13 #endif |
14 | 14 |
15 #include <map> | 15 #include <map> |
16 #include <set> | 16 #include <set> |
17 #include <string> | 17 #include <string> |
18 #include <utility> | 18 #include <utility> |
19 | 19 |
20 #include "base/basictypes.h" | 20 #include "base/basictypes.h" |
21 #include "base/compiler_specific.h" | 21 #include "base/compiler_specific.h" |
22 #include "base/files/file_path_watcher.h" | 22 #include "base/files/file_path_watcher.h" |
23 #include "base/memory/ref_counted.h" | 23 #include "base/memory/ref_counted.h" |
24 #include "base/system_monitor/system_monitor.h" | |
25 #include "content/public/browser/browser_thread.h" | 24 #include "content/public/browser/browser_thread.h" |
26 | 25 |
27 class FilePath; | 26 class FilePath; |
28 | 27 |
29 namespace chrome { | 28 namespace chrome { |
30 | 29 |
31 class MediaDeviceNotificationsLinux | 30 class MediaDeviceNotificationsLinux |
32 : public base::RefCountedThreadSafe<MediaDeviceNotificationsLinux, | 31 : public base::RefCountedThreadSafe<MediaDeviceNotificationsLinux, |
33 content::BrowserThread::DeleteOnFileThread> { | 32 content::BrowserThread::DeleteOnFileThread> { |
34 public: | 33 public: |
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46 | 45 |
47 virtual void OnFilePathChanged(const FilePath& path, bool error); | 46 virtual void OnFilePathChanged(const FilePath& path, bool error); |
48 | 47 |
49 private: | 48 private: |
50 friend class base::RefCountedThreadSafe<MediaDeviceNotificationsLinux>; | 49 friend class base::RefCountedThreadSafe<MediaDeviceNotificationsLinux>; |
51 friend class base::DeleteHelper<MediaDeviceNotificationsLinux>; | 50 friend class base::DeleteHelper<MediaDeviceNotificationsLinux>; |
52 friend struct content::BrowserThread::DeleteOnThread< | 51 friend struct content::BrowserThread::DeleteOnThread< |
53 content::BrowserThread::FILE>; | 52 content::BrowserThread::FILE>; |
54 | 53 |
55 // (mount device, device id) | 54 // (mount device, device id) |
56 typedef std::pair<std::string, | 55 typedef std::pair<std::string, std::string> MountDeviceAndId; |
57 base::SystemMonitor::DeviceIdType> MountDeviceAndId; | |
58 // Mapping of mount points to MountDeviceAndId. | 56 // Mapping of mount points to MountDeviceAndId. |
59 typedef std::map<std::string, MountDeviceAndId> MountMap; | 57 typedef std::map<std::string, MountDeviceAndId> MountMap; |
60 | 58 |
61 void InitOnFileThread(); | 59 void InitOnFileThread(); |
62 | 60 |
63 // Parse the mtab file and find all changes. | 61 // Parse the mtab file and find all changes. |
64 void UpdateMtab(); | 62 void UpdateMtab(); |
65 | 63 |
66 // Read the mtab file entries into |mtab|. | 64 // Read the mtab file entries into |mtab|. |
67 void ReadMtab(MountMap* mtab); | 65 void ReadMtab(MountMap* mtab); |
68 | 66 |
69 // Add a media device with a given device and mount device. Assign it a device | 67 // Add a media device with a given device and mount device. Assign it a device |
70 // id as well. | 68 // id as well. |
71 void AddNewDevice(const std::string& mount_device, | 69 void AddNewDevice(const std::string& mount_device, |
72 const std::string& mount_point, | 70 const std::string& mount_point, |
73 base::SystemMonitor::DeviceIdType* device_id); | 71 std::string* device_id); |
74 | 72 |
75 // Remove a media device with a given device id. | 73 // Remove a media device with a given device id. |
76 void RemoveOldDevice(const base::SystemMonitor::DeviceIdType& device_id); | 74 void RemoveOldDevice(const std::string& device_id); |
77 | 75 |
78 // Whether Init() has been called or not. | 76 // Whether Init() has been called or not. |
79 bool initialized_; | 77 bool initialized_; |
80 | 78 |
81 // Mtab file that lists the mount points. | 79 // Mtab file that lists the mount points. |
82 const FilePath mtab_path_; | 80 const FilePath mtab_path_; |
83 | 81 |
84 // Watcher for |mtab_path_|. | 82 // Watcher for |mtab_path_|. |
85 base::files::FilePathWatcher file_watcher_; | 83 base::files::FilePathWatcher file_watcher_; |
86 | 84 |
87 // Mapping of relevant mount points and their corresponding mount devices. | 85 // Mapping of relevant mount points and their corresponding mount devices. |
88 // Keep in mind on Linux, a device can be mounted at multiple mount points, | 86 // Keep in mind on Linux, a device can be mounted at multiple mount points, |
89 // and multiple devices can be mounted at a mount point. | 87 // and multiple devices can be mounted at a mount point. |
90 MountMap mtab_; | 88 MountMap mtab_; |
91 | 89 |
92 // The lowest available device id number. | 90 // The lowest available device id number. |
93 base::SystemMonitor::DeviceIdType current_device_id_; | 91 // TODO(thestig) Remove this and use a real per-device unique id instead. |
| 92 int current_device_id_; |
94 | 93 |
95 // Set of known file systems that we care about. | 94 // Set of known file systems that we care about. |
96 std::set<std::string> known_file_systems_; | 95 std::set<std::string> known_file_systems_; |
97 | 96 |
98 DISALLOW_COPY_AND_ASSIGN(MediaDeviceNotificationsLinux); | 97 DISALLOW_COPY_AND_ASSIGN(MediaDeviceNotificationsLinux); |
99 }; | 98 }; |
100 | 99 |
101 } // namespace chrome | 100 } // namespace chrome |
102 | 101 |
103 #endif // CHROME_BROWSER_MEDIA_GALLERY_MEDIA_DEVICE_NOTIFICATIONS_LINUX_H_ | 102 #endif // CHROME_BROWSER_MEDIA_GALLERY_MEDIA_DEVICE_NOTIFICATIONS_LINUX_H_ |
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