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 #include "volume/volume_manager.h"
17 #include <cstdlib>
18 #include <sys/sysmacros.h>
19 #include "storage_service_log.h"
20 #include "storage_service_errno.h"
21 #include "utils/string_utils.h"
22 #include "volume/external_volume_info.h"
23 #include "ipc/storage_manager_client.h"
24
25 using namespace std;
26
27 namespace OHOS {
28 namespace StorageDaemon {
29 VolumeManager* VolumeManager::instance_ = nullptr;
30
Instance()31 VolumeManager* VolumeManager::Instance()
32 {
33 if (instance_ == nullptr) {
34 instance_ = new VolumeManager();
35 }
36
37 return instance_;
38 }
39
GetVolume(const std::string volId)40 std::shared_ptr<VolumeInfo> VolumeManager::GetVolume(const std::string volId)
41 {
42 auto it = volumes_.find(volId);
43 if (it == volumes_.end()) {
44 return nullptr;
45 }
46 return it->second;
47 }
48
CreateVolume(const std::string diskId,dev_t device)49 std::string VolumeManager::CreateVolume(const std::string diskId, dev_t device)
50 {
51 std::string volId = StringPrintf("vol-%u-%u", major(device), minor(device));
52
53 LOGI("create volume %{public}s.", volId.c_str());
54
55 std::shared_ptr<VolumeInfo> tmp = GetVolume(volId);
56 if (tmp != nullptr) {
57 LOGE("volume %{public}s exist.", volId.c_str());
58 return "";
59 }
60
61 auto info = std::make_shared<ExternalVolumeInfo>();
62 int32_t ret = info->Create(volId, diskId, device);
63 if (ret) {
64 return "";
65 }
66
67 volumes_[volId] = info;
68
69 StorageManagerClient client;
70 ret = client.NotifyVolumeCreated(info);
71 if (ret != E_OK) {
72 LOGE("Volume Notify Created failed");
73 }
74
75 return volId;
76 }
77
DestroyVolume(const std::string volId)78 int32_t VolumeManager::DestroyVolume(const std::string volId)
79 {
80 LOGI("destroy volume %{public}s.", volId.c_str());
81
82 std::shared_ptr<VolumeInfo> destroyNode = GetVolume(volId);
83
84 if (destroyNode == nullptr) {
85 LOGE("the volume %{public}s does not exist", volId.c_str());
86 return E_NON_EXIST;
87 }
88
89 int32_t ret = destroyNode->Destroy();
90 if (ret)
91 return ret;
92 volumes_.erase(volId);
93 destroyNode.reset();
94
95 StorageManagerClient client;
96 ret = client.NotifyVolumeDestroyed(volId);
97 if (ret != E_OK) {
98 LOGE("Volume Notify Created failed");
99 }
100 return E_OK;
101 }
102
Check(const std::string volId)103 int32_t VolumeManager::Check(const std::string volId)
104 {
105 std::shared_ptr<VolumeInfo> info = GetVolume(volId);
106 if (info == nullptr) {
107 LOGE("the volume %{public}s does not exist.", volId.c_str());
108 return E_NON_EXIST;
109 }
110
111 int32_t err = info->Check();
112 if (err != E_OK) {
113 LOGE("the volume %{public}s check failed.", volId.c_str());
114 return err;
115 }
116 return E_OK;
117 }
118
Mount(const std::string volId,uint32_t flags)119 int32_t VolumeManager::Mount(const std::string volId, uint32_t flags)
120 {
121 std::shared_ptr<VolumeInfo> info = GetVolume(volId);
122 if (info == nullptr) {
123 LOGE("the volume %{public}s does not exist.", volId.c_str());
124 return E_NON_EXIST;
125 }
126
127 int32_t err = info->Mount(flags);
128 if (err != E_OK) {
129 LOGE("the volume %{public}s mount failed.", volId.c_str());
130 return err;
131 }
132
133 StorageManagerClient client;
134 err = client.NotifyVolumeMounted(info);
135 if (err) {
136 LOGE("Volume Notify Mount Destroyed failed");
137 }
138 return E_OK;
139 }
140
UMount(const std::string volId)141 int32_t VolumeManager::UMount(const std::string volId)
142 {
143 std::shared_ptr<VolumeInfo> info = GetVolume(volId);
144 if (info == nullptr) {
145 LOGE("the volume %{public}s does not exist.", volId.c_str());
146 return E_NON_EXIST;
147 }
148
149 int32_t err = info->UMount();
150 if (err != E_OK) {
151 LOGE("the volume %{public}s mount failed.", volId.c_str());
152 return err;
153 }
154 return E_OK;
155 }
156
Format(const std::string volId,const std::string fsType)157 int32_t VolumeManager::Format(const std::string volId, const std::string fsType)
158 {
159 std::shared_ptr<VolumeInfo> info = GetVolume(volId);
160 if (info == nullptr) {
161 LOGE("the volume %{public}s does not exist.", volId.c_str());
162 return E_NON_EXIST;
163 }
164
165 int32_t err = info->Format(fsType);
166 if (err != E_OK) {
167 LOGE("the volume %{public}s format failed.", volId.c_str());
168 return err;
169 }
170
171 return E_OK;
172 }
173 } // StorageDaemon
174 } // OHOS
175