1 /*
2  * Copyright (c) 2021 Huawei Device Co., Ltd.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at
6  *
7  *     http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 #ifndef OHOS_STORAGE_DAEMON_DISK_MANAGER_H
17 #define OHOS_STORAGE_DAEMON_DISK_MANAGER_H
18 
19 #include <list>
20 #include <memory>
21 #include <mutex>
22 #include <cstring>
23 #include <nocopyable.h>
24 
25 #include <sys/types.h>
26 
27 #include "disk/disk_config.h"
28 #include "disk/disk_info.h"
29 #include "netlink/netlink_data.h"
30 
31 namespace OHOS {
32 namespace StorageDaemon {
33 class DiskManager final {
34 public:
35     static DiskManager* Instance(void);
36 
37     virtual ~DiskManager();
38     void CreateDisk(std::shared_ptr<DiskInfo> &diskInfo);
39     void DestroyDisk(dev_t device);
40     void ChangeDisk(dev_t device);
41     std::shared_ptr<DiskInfo> GetDisk(dev_t device);
42     void HandleDiskEvent(NetlinkData *data);
43     int32_t HandlePartition(std::string diskId);
44     void AddDiskConfig(std::shared_ptr<DiskConfig> &diskConfig);
45     void ReplayUevent();
46     std::shared_ptr<DiskInfo> MatchConfig(NetlinkData *data);
47 
48 private:
49     DiskManager() = default;
50 
51     std::mutex lock_;
52     std::list<std::shared_ptr<DiskInfo>> disk_;
53     std::list<std::shared_ptr<DiskConfig>> diskConfig_;
54     static DiskManager* instance_;
55 
56     DISALLOW_COPY_AND_MOVE(DiskManager);
57 
58     const std::string sysBlockPath_ = "/sys/block";
59 };
60 } // STORAGE_DAEMON
61 } // OHOS
62 
63 #endif // OHOS_STORAGE_DAEMON_DISK_MANAGER_H
64