1 /*
2 * Copyright (c) 2022 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 "statvfs_n_exporter.h"
17
18 #include <sys/statvfs.h>
19 #include <tuple>
20
21 namespace OHOS {
22 namespace FileManagement {
23 namespace ModuleStatvfs {
24 using namespace FileManagement::LibN;
25
GetFreeSizeSync(napi_env env,napi_callback_info info)26 napi_value GetFreeSizeSync(napi_env env, napi_callback_info info)
27 {
28 NFuncArg funcArg(env, info);
29 if (!funcArg.InitArgs(NARG_CNT::ONE)) {
30 HILOGE("Number of arguments unmatched");
31 NError(EINVAL).ThrowErr(env);
32 return nullptr;
33 }
34
35 bool succ = false;
36 std::unique_ptr<char[]> path;
37 tie(succ, path, std::ignore) = NVal(env, funcArg[NARG_POS::FIRST]).ToUTF8StringPath();
38 if (!succ) {
39 HILOGE("Invalid path");
40 NError(EINVAL).ThrowErr(env);
41 return nullptr;
42 }
43
44 struct statvfs diskInfo;
45 int ret = statvfs(path.get(), &diskInfo);
46 if (ret != 0) {
47 NError(errno).ThrowErr(env);
48 return nullptr;
49 }
50 unsigned long long freeSize = static_cast<unsigned long long>(diskInfo.f_bsize) *
51 static_cast<unsigned long long>(diskInfo.f_bfree);
52 return NVal::CreateInt64(env, freeSize).val_;
53 }
54
GetFreeSize(napi_env env,napi_callback_info info)55 napi_value GetFreeSize(napi_env env, napi_callback_info info)
56 {
57 NFuncArg funcArg(env, info);
58 if (!funcArg.InitArgs(NARG_CNT::ONE, NARG_CNT::TWO)) {
59 HILOGE("Number of arguments unmatched");
60 NError(EINVAL).ThrowErr(env);
61 return nullptr;
62 }
63
64 bool succ = false;
65 std::unique_ptr<char []> path;
66 tie(succ, path, std::ignore) = NVal(env, funcArg[NARG_POS::FIRST]).ToUTF8StringPath();
67 if (!succ) {
68 HILOGE("Invalid path");
69 NError(EINVAL).ThrowErr(env);
70 return nullptr;
71 }
72
73 auto resultSize = std::make_shared<unsigned long long>();
74 std::string pathString(path.get());
75 auto cbExec = [pathString = move(pathString), resultSize]() -> NError {
76 struct statvfs diskInfo;
77 int ret = statvfs(pathString.c_str(), &diskInfo);
78 if (ret != 0) {
79 return NError(errno);
80 }
81 *resultSize = static_cast<unsigned long long>(diskInfo.f_bsize) *
82 static_cast<unsigned long long>(diskInfo.f_bfree);
83 return NError(ERRNO_NOERR);
84 };
85 auto cbComplete = [resultSize](napi_env env, NError err) -> NVal {
86 if (err) {
87 return { env, err.GetNapiErr(env) };
88 }
89 return NVal::CreateInt64(env, *resultSize);
90 };
91
92 static const std::string PROCEDURE_NAME = "GetFreeSize";
93 NVal thisVar(env, funcArg.GetThisVar());
94 if (funcArg.GetArgc() == NARG_CNT::ONE) {
95 return NAsyncWorkPromise(env, thisVar).Schedule(PROCEDURE_NAME, cbExec, cbComplete).val_;
96 }
97
98 NVal cb(env, funcArg[NARG_POS::SECOND]);
99 return NAsyncWorkCallback(env, thisVar, cb).Schedule(PROCEDURE_NAME, cbExec, cbComplete).val_;
100 }
101
GetTotalSizeSync(napi_env env,napi_callback_info info)102 napi_value GetTotalSizeSync(napi_env env, napi_callback_info info)
103 {
104 NFuncArg funcArg(env, info);
105 if (!funcArg.InitArgs(NARG_CNT::ONE)) {
106 HILOGE("Number of arguments unmatched");
107 NError(EINVAL).ThrowErr(env);
108 return nullptr;
109 }
110
111 bool succ = false;
112 std::unique_ptr<char[]> path;
113 tie(succ, path, std::ignore) = NVal(env, funcArg[NARG_POS::FIRST]).ToUTF8StringPath();
114 if (!succ) {
115 HILOGE("Invalid path");
116 NError(EINVAL).ThrowErr(env);
117 return nullptr;
118 }
119
120 struct statvfs diskInfo;
121 int ret = statvfs(path.get(), &diskInfo);
122 if (ret != 0) {
123 NError(errno).ThrowErr(env);
124 return nullptr;
125 }
126 unsigned long long totalSize = static_cast<unsigned long long>(diskInfo.f_bsize) *
127 static_cast<unsigned long long>(diskInfo.f_blocks);
128 return NVal::CreateInt64(env, totalSize).val_;
129 }
130
GetTotalSize(napi_env env,napi_callback_info info)131 napi_value GetTotalSize(napi_env env, napi_callback_info info)
132 {
133 NFuncArg funcArg(env, info);
134 if (!funcArg.InitArgs(NARG_CNT::ONE, NARG_CNT::TWO)) {
135 HILOGE("Number of arguments unmatched");
136 NError(EINVAL).ThrowErr(env);
137 return nullptr;
138 }
139
140 bool succ = false;
141 std::unique_ptr<char []> path;
142 tie(succ, path, std::ignore) = NVal(env, funcArg[NARG_POS::FIRST]).ToUTF8StringPath();
143 if (!succ) {
144 HILOGE("Invalid path");
145 NError(EINVAL).ThrowErr(env);
146 return nullptr;
147 }
148
149 auto resultSize = std::make_shared<unsigned long long>();
150 std::string pathString(path.get());
151 auto cbExec = [pathString = move(pathString), resultSize]() -> NError {
152 struct statvfs diskInfo;
153 int ret = statvfs(pathString.c_str(), &diskInfo);
154 if (ret != 0) {
155 return NError(errno);
156 }
157 *resultSize = static_cast<unsigned long long>(diskInfo.f_bsize) *
158 static_cast<unsigned long long>(diskInfo.f_blocks);
159 return NError(ERRNO_NOERR);
160 };
161 auto cbComplete = [resultSize](napi_env env, NError err) -> NVal {
162 if (err) {
163 return { env, err.GetNapiErr(env) };
164 }
165 return { NVal::CreateInt64(env, *resultSize) };
166 };
167
168 static const std::string PROCEDURE_NAME = "GetTotalSize";
169 NVal thisVar(env, funcArg.GetThisVar());
170 if (funcArg.GetArgc() == NARG_CNT::ONE) {
171 return NAsyncWorkPromise(env, thisVar).Schedule(PROCEDURE_NAME, cbExec, cbComplete).val_;
172 }
173
174 NVal cb(env, funcArg[NARG_POS::SECOND]);
175 return NAsyncWorkCallback(env, thisVar, cb).Schedule(PROCEDURE_NAME, cbExec, cbComplete).val_;
176 }
177 } // namespace ModuleStatfs
178 } // namespace FileManagement
179 } // namespace OHOS
180