1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
|
// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// MtabWatcherLinux listens for mount point changes from a mtab file and
// notifies a StorageMonitorLinux about them.
// MtabWatcherLinux lives on the FILE thread.
#ifndef COMPONENTS_STORAGE_MONITOR_MTAB_WATCHER_LINUX_H_
#define COMPONENTS_STORAGE_MONITOR_MTAB_WATCHER_LINUX_H_
#if defined(OS_CHROMEOS)
#error "ChromeOS does not use MtabWatcherLinux."
#endif
#include <map>
#include "base/files/file_path.h"
#include "base/files/file_path_watcher.h"
#include "base/macros.h"
#include "base/memory/weak_ptr.h"
#include "build/build_config.h"
namespace storage_monitor {
class MtabWatcherLinux {
public:
// (mount point, mount device)
// A mapping from mount point to mount device, as extracted from the mtab
// file.
typedef std::map<base::FilePath, base::FilePath> MountPointDeviceMap;
class Delegate {
public:
virtual ~Delegate() {}
// Parses |new_mtab| and find all changes. Called on the UI thread.
virtual void UpdateMtab(const MountPointDeviceMap& new_mtab) = 0;
};
MtabWatcherLinux(const base::FilePath& mtab_path,
base::WeakPtr<Delegate> delegate);
~MtabWatcherLinux();
private:
// Reads mtab file entries into |mtab|.
void ReadMtab() const;
// Called when |mtab_path_| changes.
void OnFilePathChanged(const base::FilePath& path, bool error);
// Mtab file that lists the mount points.
const base::FilePath mtab_path_;
// Watcher for |mtab_path_|.
base::FilePathWatcher file_watcher_;
base::WeakPtr<Delegate> delegate_;
base::WeakPtrFactory<MtabWatcherLinux> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(MtabWatcherLinux);
};
} // namespace storage_monitor
#endif // COMPONENTS_STORAGE_MONITOR_MTAB_WATCHER_LINUX_H_
|
