diff --git a/interfaces/kits/js/napi/@ohos.document.d.ts b/interfaces/kits/js/napi/@ohos.document.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..88df1e0cfde75ca6f7ae55ea9ea1645e0ba2b3be
--- /dev/null
+++ b/interfaces/kits/js/napi/@ohos.document.d.ts
@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 2021 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { AsyncCallback } from './basic'
+
+export default document;
+
+/**
+ * document
+ * @syscap SystemCapability.FileManagement.UserFileService
+ * @since 6
+ * @import import document from '@ohos.document';
+ * @permission N/A
+ */
+declare namespace document {
+    export { choose };
+    export { show };
+}
+
+/**
+ * choose.
+ *
+ * @note N/A
+ * @syscap SystemCapability.FileManagement.UserFileService
+ * @since 6
+ * @permission N/A
+ * @function choose
+ * @param {string} type - type.
+ * @param {AsyncCallback<void>} [callback] - callback.
+ * @returns {void | Promise<void>} no callback return Promise otherwise return void
+ * @throws {TypedError} Parameter check failed
+ */
+declare function choose(types?: string[]): Promise<string>;
+declare function choose(callback: AsyncCallback<string>): void;
+declare function choose(types: string[], callback: AsyncCallback<string>): void;
+
+/**
+ * show.
+ *
+ * @note N/A
+ * @syscap SystemCapability.FileManagement.UserFileService
+ * @since 6
+ * @permission N/A
+ * @function show
+ * @param {string} uri - uri.
+ * @param {string} type - type.
+ * @param {AsyncCallback<void>} [callback] - callback.
+ * @returns {void | Promise<void>} no callback return Promise otherwise return void
+ * @throws {TypedError} Parameter check failed
+ */
+declare function show(uri: string, type: string): Promise<void>;
+declare function show(uri: string, type: string, callback: AsyncCallback<void>): void;
\ No newline at end of file
diff --git a/interfaces/kits/js/napi/@ohos.environment.d.ts b/interfaces/kits/js/napi/@ohos.environment.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..4ecb978046047db3a38db777c70b537bc8d6b874
--- /dev/null
+++ b/interfaces/kits/js/napi/@ohos.environment.d.ts
@@ -0,0 +1,41 @@
+/*
+* Copyright (C) 2021 Huawei Device Co., Ltd.
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+import {AsyncCallback, Callback} from "./basic";
+
+/**
+ * Provides Environment APIs.
+ *
+ * @since 8
+ * @syscap SystemCapability.FileManagement.File.Environment
+ */
+declare namespace Environment {
+  /**
+   * Get the user data path.
+   *
+   * @since 8
+   */
+  function getStorageDataDir(callback: AsyncCallback<string>): void;
+  function getStorageDataDir(): Promise<string>;
+  /**
+   * Get the User storage path.
+   *
+   * @since 8
+   */
+  function getUserDataDir(callback: AsyncCallback<string>): void;
+  function getUserDataDir(): Promise<string>;
+}
+
+export default Environment;
diff --git a/interfaces/kits/js/napi/@ohos.securityLabel.d.ts b/interfaces/kits/js/napi/@ohos.securityLabel.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..8e3b8629f1ec97cf9089ef6eeb12f4d134b48739
--- /dev/null
+++ b/interfaces/kits/js/napi/@ohos.securityLabel.d.ts
@@ -0,0 +1,59 @@
+/*
+* Copyright (C) 2021 Huawei Device Co., Ltd.
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+import {AsyncCallback, Callback} from "./basic";
+
+/**
+ * Provides securityLabel APIs
+ *
+ * @since 9
+ * @syscap  SystemCapability.FileManagement.File.FileIO
+ */
+
+declare namespace securityLabel {
+
+  type dataLevel = 's0'|'s1'|'s2'|'s3'|'s4';
+  /**
+   * set the SecurityLabel.
+   *
+   * @since 9
+   */
+  function setSecurityLabel(path:string, type:dataLevel, callback: AsyncCallback<void>): void;
+  function setSecurityLabel(path:string, type:dataLevel): Promise<void>;
+
+  /**
+   * set the SecurityLabelSync.
+   *
+   * @since 9
+   */
+   function setSecurityLabelSync(path:string, type:dataLevel): void;
+
+    /**
+   * get the SecurityLabel.
+   *
+   * @since 9
+   */
+  function getSecurityLabel(path:string, callback: AsyncCallback<string>): void;
+  function getSecurityLabel(path:string): Promise<string>;
+
+  /**
+   * get the SecurityLabelSync.
+   *
+   * @since 9
+   */
+   function getSecurityLabelSync(path:string): string;
+}
+
+export default securityLabel;
\ No newline at end of file
diff --git a/interfaces/kits/js/napi/@ohos.statfs.d.ts b/interfaces/kits/js/napi/@ohos.statfs.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..4a83f02b8e37d08348623e359707ad84a93daa99
--- /dev/null
+++ b/interfaces/kits/js/napi/@ohos.statfs.d.ts
@@ -0,0 +1,41 @@
+/*
+* Copyright (C) 2021 Huawei Device Co., Ltd.
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+import {AsyncCallback, Callback} from "./basic";
+
+/**
+ * Provides filesystem statistics APIs
+ *
+ * @since 8
+ * @syscap SystemCapability.FileManagement.File.FileIO
+ */
+declare namespace Statfs {
+  /**
+   * Get the number of free bytes on the specified path.
+   *
+   * @since 8
+   */
+  function getFreeBytes(path: string, callback: AsyncCallback<number>): void;
+  function getFreeBytes(path: string): Promise<number>;
+  /**
+   * Get the total number of bytes of the specified path.
+   *
+   * @since 8
+   */
+  function getTotalBytes(path: string, callback: AsyncCallback<number>): void;
+  function getTotalBytes(path: string): Promise<number>;
+}
+
+export default Statfs;
diff --git a/interfaces/kits/js/src/mod_document/document_n_exporter.cpp b/interfaces/kits/js/src/mod_document/document_n_exporter.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..a23741bc796a91bd97accd0fe451aa6ebe8ffed6
--- /dev/null
+++ b/interfaces/kits/js/src/mod_document/document_n_exporter.cpp
@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2021-2022 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "document_n_exporter.h"
+
+#include <sys/statvfs.h>
+#include <tuple>
+
+#include "../common/napi/n_async/n_async_work_callback.h"
+#include "../common/napi/n_async/n_async_work_promise.h"
+#include "../common/napi/n_class.h"
+#include "../common/napi/n_func_arg.h"
+#include "../common/napi/n_val.h"
+#include "../common/uni_error.h"
+
+namespace OHOS {
+namespace DistributedFS {
+namespace ModuleDocument {
+napi_value Choose(napi_env env, napi_callback_info info)
+{
+    UniError(EINVAL).ThrowErr(env, "error");
+    return nullptr;
+}
+
+napi_value Show(napi_env env, napi_callback_info info)
+{
+    UniError(EINVAL).ThrowErr(env, "error");
+    return nullptr;
+}
+} // namespace ModuleDocument
+} // namespace DistributedFS
+} // namespace OHOS
\ No newline at end of file
diff --git a/interfaces/kits/js/src/mod_document/document_n_exporter.h b/interfaces/kits/js/src/mod_document/document_n_exporter.h
new file mode 100644
index 0000000000000000000000000000000000000000..653e1e6c7b2017863358e6ed8ab7bd1bffa9afb0
--- /dev/null
+++ b/interfaces/kits/js/src/mod_document/document_n_exporter.h
@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2021 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef DOCUMENT_N_EXPORTER_H
+#define DOCUMENT_N_EXPORTER_H
+
+#include "../common/napi/n_exporter.h"
+
+namespace OHOS {
+namespace DistributedFS {
+namespace ModuleDocument {
+napi_value Choose(napi_env env, napi_callback_info info);
+napi_value Show(napi_env env, napi_callback_info info);
+} // namespace ModuleDocument
+} // namespace DistributedFS
+} // namespace OHOS
+#endif // DOCUMENT_N_EXPORTER_H
\ No newline at end of file
diff --git a/interfaces/kits/js/src/mod_document/document_napi.cpp b/interfaces/kits/js/src/mod_document/document_napi.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..81d08a34ec625cca780533f254efb52fd42ffb82
--- /dev/null
+++ b/interfaces/kits/js/src/mod_document/document_napi.cpp
@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 2021-2022 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "document_napi.h"
+
+#include "document_n_exporter.h"
+#include "napi/native_api.h"
+#include "napi/native_node_api.h"
+
+namespace OHOS {
+namespace DistributedFS {
+namespace ModuleDocument {
+/***********************************************
+ * Module export and register
+ ***********************************************/
+napi_value DocumentExport(napi_env env, napi_value exports)
+{
+    static napi_property_descriptor desc[] = {
+        DECLARE_NAPI_FUNCTION("choose", Choose),
+        DECLARE_NAPI_FUNCTION("show", Show),
+    };
+    NAPI_CALL(env, napi_define_properties(env, exports, sizeof(desc) / sizeof(desc[0]), desc));
+    return exports;
+}
+
+NAPI_MODULE(document, DocumentExport)
+} // namespace ModuleDocument
+} // namespace DistributedFS
+} // namespace OHOS
\ No newline at end of file
diff --git a/interfaces/kits/js/src/mod_document/document_napi.h b/interfaces/kits/js/src/mod_document/document_napi.h
new file mode 100644
index 0000000000000000000000000000000000000000..80cdd7c8b85539fcef210b5a522c0abe79102028
--- /dev/null
+++ b/interfaces/kits/js/src/mod_document/document_napi.h
@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2021 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef DOCUMENT_NAPI_H
+#define DOCUMENT_NAPI_H
+
+#include "napi/native_api.h"
+
+namespace OHOS {
+namespace DistributedFS {
+namespace ModuleDocument {
+} // namespace ModuleDocument
+} // namespace DistributedFS
+} // namespace OHOS
+#endif // DOCUMENT_NAPI_H
\ No newline at end of file
diff --git a/interfaces/kits/js/src/mod_environment/environment_n_exporter.cpp b/interfaces/kits/js/src/mod_environment/environment_n_exporter.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..780bdc2bc80e5fcc3c985fca78076eebb6357652
--- /dev/null
+++ b/interfaces/kits/js/src/mod_environment/environment_n_exporter.cpp
@@ -0,0 +1,97 @@
+/*
+ * Copyright (c) 2021-2022 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "environment_n_exporter.h"
+
+#include <string>
+
+#include "../common/napi/n_async/n_async_work_callback.h"
+#include "../common/napi/n_async/n_async_work_promise.h"
+#include "../common/napi/n_class.h"
+#include "../common/napi/n_func_arg.h"
+#include "../common/napi/n_val.h"
+#include "../common/uni_error.h"
+
+namespace OHOS {
+namespace DistributedFS {
+namespace ModuleEnvironment {
+namespace {
+    const std::string STORAGE_DATA_PATH = "/data";
+}
+napi_value GetStorageDataDir(napi_env env, napi_callback_info info)
+{
+    NFuncArg funcArg(env, info);
+    if (!funcArg.InitArgs(NARG_CNT::ZERO, NARG_CNT::ONE)) {
+        UniError(EINVAL).ThrowErr(env, "Number of arguments unmatched");
+        return nullptr;
+    }
+
+    auto cbExec = [](napi_env env) -> UniError {
+        return UniError(ERRNO_NOERR);
+    };
+    auto cbComplete = [](napi_env env, UniError err) -> NVal {
+        if (err) {
+            return { env, err.GetNapiErr(env) };
+        }
+        return NVal::CreateUTF8String(env, STORAGE_DATA_PATH);
+    };
+
+    static const std::string procedureName = "GetStorageDataDir";
+    NVal thisVar(env, funcArg.GetThisVar());
+    if (funcArg.GetArgc() == NARG_CNT::ZERO) {
+        return NAsyncWorkPromise(env, thisVar).Schedule(procedureName, cbExec, cbComplete).val_;
+    }
+
+    NVal cb(env, funcArg[NARG_POS::FIRST]);
+    return NAsyncWorkCallback(env, thisVar, cb).Schedule(procedureName, cbExec, cbComplete).val_;
+}
+
+int GetUserId()
+{
+    return 0;
+}
+
+napi_value GetUserDataDir(napi_env env, napi_callback_info info)
+{
+    NFuncArg funcArg(env, info);
+    if (!funcArg.InitArgs(NARG_CNT::ZERO, NARG_CNT::ONE)) {
+        UniError(EINVAL).ThrowErr(env, "Number of arguments unmatched");
+        return nullptr;
+    }
+
+    auto userDataPath = std::make_shared<std::string>();
+    auto cbExec = [userDataPath](napi_env env) -> UniError {
+        (*userDataPath).append("/storage/media/").append(std::to_string(GetUserId())).append("/local");
+        return UniError(ERRNO_NOERR);
+    };
+    auto cbComplete = [userDataPath](napi_env env, UniError err) -> NVal {
+        if (err) {
+            return { env, err.GetNapiErr(env) };
+        }
+        return NVal::CreateUTF8String(env, *userDataPath);
+    };
+
+    static const std::string procedureName = "GetUserDataDir";
+    NVal thisVar(env, funcArg.GetThisVar());
+    if (funcArg.GetArgc() == NARG_CNT::ZERO) {
+        return NAsyncWorkPromise(env, thisVar).Schedule(procedureName, cbExec, cbComplete).val_;
+    }
+
+    NVal cb(env, funcArg[NARG_POS::FIRST]);
+    return NAsyncWorkCallback(env, thisVar, cb).Schedule(procedureName, cbExec, cbComplete).val_;
+}
+} // namespace ModuleEnvironment
+} // namespace DistributedFS
+} // namespace OHOS
\ No newline at end of file
diff --git a/interfaces/kits/js/src/mod_environment/environment_n_exporter.h b/interfaces/kits/js/src/mod_environment/environment_n_exporter.h
new file mode 100644
index 0000000000000000000000000000000000000000..1b46a7b96924b89f17d889df4f1436be00dd2a53
--- /dev/null
+++ b/interfaces/kits/js/src/mod_environment/environment_n_exporter.h
@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2021 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ENVIRONMENT_N_EXPORTER_H
+#define ENVIRONMENT_N_EXPORTER_H
+
+#include "../common/napi/n_exporter.h"
+
+namespace OHOS {
+namespace DistributedFS {
+namespace ModuleEnvironment {
+napi_value GetStorageDataDir(napi_env env, napi_callback_info info);
+napi_value GetUserDataDir(napi_env env, napi_callback_info info);
+} // namespace ModuleEnvironment
+} // namespace DistributedFS
+} // namespace OHOS
+#endif // ENVIRONMENT_N_EXPORTER_H
\ No newline at end of file
diff --git a/interfaces/kits/js/src/mod_environment/environment_napi.cpp b/interfaces/kits/js/src/mod_environment/environment_napi.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..f6ec658a4fa60d99183e649250c0ee3a5446e5c0
--- /dev/null
+++ b/interfaces/kits/js/src/mod_environment/environment_napi.cpp
@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2021-2022 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "environment_n_exporter.h"
+#include "napi/native_api.h"
+#include "napi/native_node_api.h"
+
+namespace OHOS {
+namespace DistributedFS {
+namespace ModuleEnvironment {
+/***********************************************
+ * Module export and register
+ ***********************************************/
+napi_value EnvironmentExport(napi_env env, napi_value exports)
+{
+    static napi_property_descriptor desc[] = {
+        DECLARE_NAPI_FUNCTION("getStorageDataDir", GetStorageDataDir),
+        DECLARE_NAPI_FUNCTION("getUserDataDir", GetUserDataDir),
+    };
+    NAPI_CALL(env, napi_define_properties(env, exports, sizeof(desc) / sizeof(desc[0]), desc));
+    return exports;
+}
+
+NAPI_MODULE(environment, EnvironmentExport)
+} // namespace ModuleEnvironment
+} // namespace DistributedFS
+} // namespace OHOS
\ No newline at end of file
diff --git a/interfaces/kits/js/src/mod_securitylabel/security_label.h b/interfaces/kits/js/src/mod_securitylabel/security_label.h
new file mode 100644
index 0000000000000000000000000000000000000000..77b4c50f16f5c390cd62a2d45e1e68120f59211d
--- /dev/null
+++ b/interfaces/kits/js/src/mod_securitylabel/security_label.h
@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2021-2022 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef SECURITY_LABEL_H
+#define SECURITY_LABEL_H
+
+#include <cerrno>
+#include <memory>
+#include <set>
+#include <string>
+#include <sys/xattr.h>
+
+namespace OHOS {
+namespace DistributedFS {
+namespace ModuleSecurityLabel {
+class SecurityLabel {
+public:
+    static const char XATTR_KEY[] {"user.security"};
+    static const std::string DEFAULT_DATA_LEVEL = "s3";
+    static const std::set<std::string> DATA_LEVEL = {"s0", "s1", "s2", "s3", "s4"};
+    static bool SetSecurityLabel(const std::string &path, const std::string &dataLevel)
+    {
+        if (DATA_LEVEL.count(dataLevel) != 1) {
+            return false;
+        }
+        if (setxattr(path.c_str(), XATTR_KEY, dataLevel.c_str(), dataLevel.size(), 0) < 0) {
+            return false;
+        }
+        return true;
+    }
+
+    static std::string GetSecurityLabel(const std::string &path)
+    {
+        auto xattrValueSize = getxattr(path.c_str(), XATTR_KEY, NULL, 0);
+        if (xattrValueSize == -1 || errno == ENOTSUP) {
+            return "";
+        }
+        if (xattrValueSize <= 0) {
+            return DEFAULT_DATA_LEVEL;
+        }
+        std::unique_ptr<char[]> xattrValue = std::make_unique<char[]>((long)xattrValueSize + 1);
+        if (xattrValue == nullptr) {
+            return "";
+        }
+
+        xattrValueSize = getxattr(path.c_str(), XATTR_KEY, xattrValue.get(), xattrValueSize);
+        if (xattrValueSize == -1 || errno == ENOTSUP) {
+            return "";
+        }
+        if (xattrValueSize <= 0) {
+            return DEFAULT_DATA_LEVEL;
+        }
+        return std::string(xattrValue.get());
+    }
+};
+} // namespace ModuleSecurityLabel
+} // namespace FileIO
+} // namespace OHOS
+#endif
\ No newline at end of file
diff --git a/interfaces/kits/js/src/mod_securitylabel/securitylabel_n_exporter.cpp b/interfaces/kits/js/src/mod_securitylabel/securitylabel_n_exporter.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..1e0ac78f6267c3b7d9df52da13d246b7b8acaa93
--- /dev/null
+++ b/interfaces/kits/js/src/mod_securitylabel/securitylabel_n_exporter.cpp
@@ -0,0 +1,187 @@
+/*
+ * Copyright (c) 2021-2022 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "securitylabel_n_exporter.h"
+
+#include <singleton.h>
+#include <tuple>
+
+#include "../common/napi/n_class.h"
+#include "../common/napi/n_func_arg.h"
+#include "../common/napi/n_val.h"
+#include "../common/uni_error.h"
+#include "n_async_work_callback.h"
+#include "n_async_work_promise.h"
+#include "security_label.h"
+
+namespace OHOS {
+namespace DistributedFS {
+namespace ModuleSecurityLabel {
+using namespace std;
+
+napi_value SetSecurityLabel(napi_env env, napi_callback_info info)
+{
+    NFuncArg funcArg(env, info);
+    if (!funcArg.InitArgs(static_cast<int>(NARG_CNT::TWO), static_cast<int>(NARG_CNT::THREE))) {
+        UniError(EINVAL).ThrowErr(env, "Number of arguments unmatched");
+        return nullptr;
+    }
+
+    bool succ = false;
+    std::unique_ptr<char []> path;
+    std::unique_ptr<char []> dataLevel;
+    tie(succ, path, std::ignore) = NVal(env, funcArg[static_cast<int>(NARG_POS::FIRST)]).ToUTF8String();
+    if (!succ) {
+        UniError(EINVAL).ThrowErr(env, "Invalid path");
+        return nullptr;
+    }
+    tie(succ, dataLevel, std::ignore) = NVal(env, funcArg[static_cast<int>(NARG_POS::SECOND)]).ToUTF8String();
+    if (!succ) {
+        UniError(EINVAL).ThrowErr(env, "Invalid dataLevel");
+        return nullptr;
+    }
+    std::string pathString(path.get());
+    std::string dataLevelString(dataLevel.get());
+    if (DATA_LEVEL.find(dataLevelString) == DATA_LEVEL.end()) {
+        UniError(EINVAL).ThrowErr(env, "Invalid Argument of dataLevelEnum");
+        return nullptr;
+    }
+    auto cbExec = [pathString, dataLevelString](napi_env env) -> UniError {
+        bool ret = SecurityLabel::SetSecurityLabel(pathString, dataLevelString);
+        if (!ret) {
+            return UniError(-1);
+        } else {
+            return UniError(ERRNO_NOERR);
+        }
+    };
+    auto cbComplete = [](napi_env env, UniError err) -> NVal {
+        if (err) {
+            return { env, err.GetNapiErr(env) };
+        } else {
+            return NVal::CreateUndefined(env);
+        }
+    };
+    static const std::string procedureName = "SetSecurityLabel";
+    NVal thisVar(env, funcArg.GetThisVar());
+    if (funcArg.GetArgc() == static_cast<size_t>(NARG_CNT::TWO)) {
+        return NAsyncWorkPromise(env, thisVar).Schedule(procedureName, cbExec, cbComplete).val_;
+    } else {
+        NVal cb(env, funcArg[static_cast<int>(NARG_POS::THIRD)]);
+        if (cb.TypeIs(napi_function)) {
+            return NAsyncWorkCallback(env, thisVar, cb).Schedule(procedureName, cbExec, cbComplete).val_;
+        }
+    }
+    return NVal::CreateUndefined(env).val_;
+}
+
+napi_value SetSecurityLabelSync(napi_env env, napi_callback_info info)
+{
+    NFuncArg funcArg(env, info);
+    if (!funcArg.InitArgs(static_cast<int>(NARG_CNT::TWO), static_cast<int>(NARG_CNT::THREE))) {
+        UniError(EINVAL).ThrowErr(env, "Number of arguments unmatched");
+        return nullptr;
+    }
+
+    bool succ = false;
+    std::unique_ptr<char []> path;
+    std::unique_ptr<char []> dataLevel;
+    tie(succ, path, std::ignore) = NVal(env, funcArg[static_cast<int>(NARG_POS::FIRST)]).ToUTF8String();
+    if (!succ) {
+        UniError(EINVAL).ThrowErr(env, "Invalid path");
+        return nullptr;
+    }
+
+    tie(succ, dataLevel, std::ignore) = NVal(env, funcArg[static_cast<int>(NARG_POS::SECOND)]).ToUTF8String();
+    if (!succ) {
+        UniError(EINVAL).ThrowErr(env, "Invalid dataLevel");
+        return nullptr;
+    }
+
+    if (DATA_LEVEL.find(dataLevel.get()) == DATA_LEVEL.end()) {
+        UniError(EINVAL).ThrowErr(env, "Invalid Argument of dataLevelEnum");
+        return nullptr;
+    }
+
+    bool ret = SecurityLabel::SetSecurityLabel(path.get(), dataLevel.get());
+    if (!ret) {
+        return UniError(-1).GetNapiErr(env);
+    }
+
+    return NVal::CreateUndefined(env).val_;
+}
+
+napi_value GetSecurityLabel(napi_env env, napi_callback_info info)
+{
+    NFuncArg funcArg(env, info);
+    if (!funcArg.InitArgs(static_cast<int>(NARG_CNT::ONE), static_cast<int>(NARG_CNT::TWO))) {
+        UniError(EINVAL).ThrowErr(env, "Number of arguments unmatched");
+        return nullptr;
+    }
+
+    bool succ = false;
+    std::unique_ptr<char []> path;
+    tie(succ, path, std::ignore) = NVal(env, funcArg[static_cast<int>(NARG_POS::FIRST)]).ToUTF8String();
+    if (!succ) {
+        UniError(EINVAL).ThrowErr(env, "Invalid path");
+        return nullptr;
+    }
+    auto result = std::make_shared<string>();
+    std::string pathString(path.get());
+    auto cbExec = [pathString, result](napi_env env) -> UniError {
+        *result = SecurityLabel::GetSecurityLabel(pathString);
+        return UniError(ERRNO_NOERR);
+    };
+    auto cbComplete = [result](napi_env env, UniError err) -> NVal {
+        if (err) {
+            return { env, err.GetNapiErr(env) };
+        }
+        return { NVal::CreateUTF8String(env, *result) };
+    };
+
+    static const std::string procedureName = "GetSecurityLabel";
+    NVal thisVar(env, funcArg.GetThisVar());
+    if (funcArg.GetArgc() == static_cast<size_t>(NARG_CNT::ONE)) {
+        return NAsyncWorkPromise(env, thisVar).Schedule(procedureName, cbExec, cbComplete).val_;
+    } else {
+        NVal cb(env, funcArg[static_cast<int>(NARG_POS::SECOND)]);
+        if (cb.TypeIs(napi_function)) {
+            return NAsyncWorkCallback(env, thisVar, cb).Schedule(procedureName, cbExec, cbComplete).val_;
+        }
+    }
+    return NVal::CreateUndefined(env).val_;
+}
+
+napi_value GetSecurityLabelSync(napi_env env, napi_callback_info info)
+{
+    NFuncArg funcArg(env, info);
+    if (!funcArg.InitArgs(static_cast<int>(NARG_CNT::ONE), static_cast<int>(NARG_CNT::TWO))) {
+        UniError(EINVAL).ThrowErr(env, "Number of arguments unmatched");
+        return nullptr;
+    }
+
+    bool succ = false;
+    std::unique_ptr<char []> path;
+    tie(succ, path, std::ignore) = NVal(env, funcArg[static_cast<int>(NARG_POS::FIRST)]).ToUTF8String();
+    if (!succ) {
+        UniError(EINVAL).ThrowErr(env, "Invalid path");
+        return nullptr;
+    }
+
+    std::string result = SecurityLabel::GetSecurityLabel(path.get());
+    return NVal::CreateUTF8String(env, result).val_;
+}
+} // namespace ModuleSecurityLabel
+} // namespace DistributedFS
+} // namespace OHOS
\ No newline at end of file
diff --git a/interfaces/kits/js/src/mod_securitylabel/securitylabel_n_exporter.h b/interfaces/kits/js/src/mod_securitylabel/securitylabel_n_exporter.h
new file mode 100644
index 0000000000000000000000000000000000000000..39748659bd7bed3029563304c48650e8228ae6b7
--- /dev/null
+++ b/interfaces/kits/js/src/mod_securitylabel/securitylabel_n_exporter.h
@@ -0,0 +1,31 @@
+/*
+ * Copyright (c) 2021-2022 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef SECURITYLABEL_N_EXPORTER_H
+#define SECURITYLABEL_N_EXPORTER_H
+
+#include "../common/napi/n_exporter.h"
+
+namespace OHOS {
+namespace DistributedFS {
+namespace ModuleSecurityLabel {
+napi_value SetSecurityLabel(napi_env env, napi_callback_info info);
+napi_value SetSecurityLabelSync(napi_env env, napi_callback_info info);
+napi_value GetSecurityLabel(napi_env env, napi_callback_info info);
+napi_value GetSecurityLabelSync(napi_env env, napi_callback_info info);
+} // namespace ModuleSecurityLabel
+} // namespace DistributedFS
+} // namespace OHOS
+#endif // SECURITYLABEL_N_EXPORTER_H
\ No newline at end of file
diff --git a/interfaces/kits/js/src/mod_securitylabel/securitylabel_napi.cpp b/interfaces/kits/js/src/mod_securitylabel/securitylabel_napi.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..48df4ce3801ca3338819189a99a58588d063525c
--- /dev/null
+++ b/interfaces/kits/js/src/mod_securitylabel/securitylabel_napi.cpp
@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) 2021 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "napi/native_api.h"
+#include "napi/native_node_api.h"
+
+#include "securitylabel_n_exporter.h"
+
+namespace OHOS {
+namespace DistributedFS {
+namespace ModuleSecurityLabel {
+/***********************************************
+ * Module export and register
+ ***********************************************/
+napi_value SecurityLabelExport(napi_env env, napi_value exports)
+{
+    static napi_property_descriptor desc[] = {
+        DECLARE_NAPI_FUNCTION("setSecurityLabel", SetSecurityLabel),
+        DECLARE_NAPI_FUNCTION("setSecurityLabelSync", SetSecurityLabelSync),
+        DECLARE_NAPI_FUNCTION("getSecurityLabel", GetSecurityLabel),
+        DECLARE_NAPI_FUNCTION("getSecurityLabelSync", GetSecurityLabelSync),
+    };
+    NAPI_CALL(env, napi_define_properties(env, exports, sizeof(desc) / sizeof(desc[0]), desc));
+    return exports;
+}
+
+NAPI_MODULE(securitylabel, SecurityLabelExport)
+} // namespace ModuleSecurityLabel
+} // namespace DistributedFS
+} // namespace OHOS
diff --git a/interfaces/kits/js/src/mod_statfs/statfs_n_exporter.cpp b/interfaces/kits/js/src/mod_statfs/statfs_n_exporter.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..066e1b601f83f10504cf5daa6d27b40a45b5601e
--- /dev/null
+++ b/interfaces/kits/js/src/mod_statfs/statfs_n_exporter.cpp
@@ -0,0 +1,519 @@
+/*
+ * Copyright (c) 2021-2022 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "statfs_n_exporter.h"
+
+#include <sys/statvfs.h>
+#include <tuple>
+
+namespace OHOS {
+namespace DistributedFS {
+namespace ModuleStatfs {
+using namespace FileManagement::LibN;
+
+napi_value GetFrSizeSync(napi_env env, napi_callback_info info)
+{
+    NFuncArg funcArg(env, info);
+    if (!funcArg.InitArgs(NARG_CNT::ONE)) {
+        NError(EINVAL).ThrowErr(env, "Number of arguments unmatched");
+        return nullptr;
+    }
+
+    bool succ = false;
+    std::unique_ptr<char[]> path;
+    tie(succ, path, std::ignore) = NVal(env, funcArg[NARG_POS::FIRST]).ToUTF8String();
+    if (!succ) {
+        NError(EINVAL).ThrowErr(env, "Invalid path");
+        return nullptr;
+    }
+
+    struct statvfs diskInfo;
+    int ret = statvfs(path.get(), &diskInfo);
+    if (ret != 0) {
+        NError(errno).ThrowErr(env, "Failed get info");
+        return nullptr;
+    }
+    unsigned long long freeSize = static_cast<unsigned long long>(diskInfo.f_bsize) *
+                                  static_cast<unsigned long long>(diskInfo.f_bavail);
+    return NVal::CreateInt64(env, freeSize).val_;
+}
+
+napi_value GetFrSize(napi_env env, napi_callback_info info)
+{
+    NFuncArg funcArg(env, info);
+    if (!funcArg.InitArgs(NARG_CNT::ONE, NARG_CNT::TWO)) {
+        NError(EINVAL).ThrowErr(env, "Number of arguments unmatched");
+        return nullptr;
+    }
+
+    bool succ = false;
+    std::unique_ptr<char []> path;
+    tie(succ, path, std::ignore) = NVal(env, funcArg[NARG_POS::FIRST]).ToUTF8String();
+    if (!succ) {
+        NError(EINVAL).ThrowErr(env, "Invalid path");
+        return nullptr;
+    }
+
+    auto resultSize = std::make_shared<unsigned long long>();
+    std::string pathString(path.get());
+    auto cbExec = [pathString, resultSize]() -> NError {
+        struct statvfs diskInfo;
+        int ret = statvfs(pathString.c_str(), &diskInfo);
+        if (ret != 0) {
+            return NError(errno);
+        }
+        *resultSize = static_cast<unsigned long long>(diskInfo.f_bsize) *
+                      static_cast<unsigned long long>(diskInfo.f_bavail);
+        return NError(ERRNO_NOERR);
+    };
+    auto cbComplete = [resultSize](napi_env env, NError err) -> NVal {
+        if (err) {
+            return { env, err.GetNapiErr(env) };
+        }
+        return NVal::CreateInt64(env, *resultSize);
+    };
+
+    static const std::string procedureName = "GetFrSize";
+    NVal thisVar(env, funcArg.GetThisVar());
+    if (funcArg.GetArgc() == NARG_CNT::ONE) {
+        return NAsyncWorkPromise(env, thisVar).Schedule(procedureName, cbExec, cbComplete).val_;
+    }
+
+    NVal cb(env, funcArg[NARG_POS::SECOND]);
+    return NAsyncWorkCallback(env, thisVar, cb).Schedule(procedureName, cbExec, cbComplete).val_;
+}
+
+napi_value GetBSizeSync(napi_env env, napi_callback_info info)
+{
+    NFuncArg funcArg(env, info);
+    if (!funcArg.InitArgs(NARG_CNT::ONE)) {
+        NError(EINVAL).ThrowErr(env, "Number of arguments unmatched");
+        return nullptr;
+    }
+
+    bool succ = false;
+    std::unique_ptr<char[]> path;
+    tie(succ, path, std::ignore) = NVal(env, funcArg[NARG_POS::FIRST]).ToUTF8String();
+    if (!succ) {
+        NError(EINVAL).ThrowErr(env, "Invalid path");
+        return nullptr;
+    }
+
+    struct statvfs diskInfo;
+    int ret = statvfs(path.get(), &diskInfo);
+    if (ret != 0) {
+        NError(errno).ThrowErr(env);
+        return nullptr;
+    }
+    return NVal::CreateInt64(env, diskInfo.f_bsize).val_;
+}
+
+napi_value GetBSize(napi_env env, napi_callback_info info)
+{
+    NFuncArg funcArg(env, info);
+    if (!funcArg.InitArgs(NARG_CNT::ONE, NARG_CNT::TWO)) {
+        NError(EINVAL).ThrowErr(env, "Number of arguments unmatched");
+        return nullptr;
+    }
+
+    bool succ = false;
+    std::unique_ptr<char []> path;
+    tie(succ, path, std::ignore) = NVal(env, funcArg[NARG_POS::FIRST]).ToUTF8String();
+    if (!succ) {
+        NError(EINVAL).ThrowErr(env, "Invalid path");
+        return nullptr;
+    }
+
+    auto resultSize = std::make_shared<unsigned long long>();
+    std::string pathString(path.get());
+    auto cbExec = [pathString, resultSize]() -> NError {
+        struct statvfs diskInfo;
+        int ret = statvfs(pathString.c_str(), &diskInfo);
+        if (ret != 0) {
+            return NError(errno);
+        }
+        *resultSize = diskInfo.f_bsize;
+        return NError(ERRNO_NOERR);
+    };
+    auto cbComplete = [resultSize](napi_env env, NError err) -> NVal {
+        if (err) {
+            return { env, err.GetNapiErr(env) };
+        }
+        return NVal::CreateInt64(env, *resultSize);
+    };
+
+    static const std::string procedureName = "GetBSize";
+    NVal thisVar(env, funcArg.GetThisVar());
+    if (funcArg.GetArgc() == NARG_CNT::ONE) {
+        return NAsyncWorkPromise(env, thisVar).Schedule(procedureName, cbExec, cbComplete).val_;
+    }
+
+    NVal cb(env, funcArg[NARG_POS::SECOND]);
+    return NAsyncWorkCallback(env, thisVar, cb).Schedule(procedureName, cbExec, cbComplete).val_;
+}
+
+napi_value GetBAvailSync(napi_env env, napi_callback_info info)
+{
+    NFuncArg funcArg(env, info);
+    if (!funcArg.InitArgs(NARG_CNT::ONE)) {
+        NError(EINVAL).ThrowErr(env, "Number of arguments unmatched");
+        return nullptr;
+    }
+
+    bool succ = false;
+    std::unique_ptr<char[]> path;
+    tie(succ, path, std::ignore) = NVal(env, funcArg[NARG_POS::FIRST]).ToUTF8String();
+    if (!succ) {
+        NError(EINVAL).ThrowErr(env, "Invalid path");
+        return nullptr;
+    }
+
+    struct statvfs diskInfo;
+    int ret = statvfs(path.get(), &diskInfo);
+    if (ret != 0) {
+        NError(errno).ThrowErr(env);
+        return nullptr;
+    }
+    return NVal::CreateInt64(env, diskInfo.f_bavail).val_;
+}
+
+napi_value GetBAvail(napi_env env, napi_callback_info info)
+{
+    NFuncArg funcArg(env, info);
+    if (!funcArg.InitArgs(NARG_CNT::ONE, NARG_CNT::TWO)) {
+        NError(EINVAL).ThrowErr(env, "Number of arguments unmatched");
+        return nullptr;
+    }
+
+    bool succ = false;
+    std::unique_ptr<char []> path;
+    tie(succ, path, std::ignore) = NVal(env, funcArg[NARG_POS::FIRST]).ToUTF8String();
+    if (!succ) {
+        NError(EINVAL).ThrowErr(env, "Invalid path");
+        return nullptr;
+    }
+
+    auto resultSize = std::make_shared<unsigned long long>();
+    std::string pathString(path.get());
+    auto cbExec = [pathString, resultSize]() -> NError {
+        struct statvfs diskInfo;
+        int ret = statvfs(pathString.c_str(), &diskInfo);
+        if (ret != 0) {
+            return NError(errno);
+        }
+        *resultSize = diskInfo.f_bavail;
+        return NError(ERRNO_NOERR);
+    };
+    auto cbComplete = [resultSize](napi_env env, NError err) -> NVal {
+        if (err) {
+            return { env, err.GetNapiErr(env) };
+        }
+        return NVal::CreateInt64(env, *resultSize);
+    };
+
+    static const std::string procedureName = "GetBAvail";
+    NVal thisVar(env, funcArg.GetThisVar());
+    if (funcArg.GetArgc() == NARG_CNT::ONE) {
+        return NAsyncWorkPromise(env, thisVar).Schedule(procedureName, cbExec, cbComplete).val_;
+    }
+
+    NVal cb(env, funcArg[NARG_POS::SECOND]);
+    return NAsyncWorkCallback(env, thisVar, cb).Schedule(procedureName, cbExec, cbComplete).val_;
+}
+
+napi_value GetBlocksSync(napi_env env, napi_callback_info info)
+{
+    NFuncArg funcArg(env, info);
+    if (!funcArg.InitArgs(NARG_CNT::ONE)) {
+        NError(EINVAL).ThrowErr(env, "Number of arguments unmatched");
+        return nullptr;
+    }
+
+    bool succ = false;
+    std::unique_ptr<char[]> path;
+    tie(succ, path, std::ignore) = NVal(env, funcArg[NARG_POS::FIRST]).ToUTF8String();
+    if (!succ) {
+        NError(EINVAL).ThrowErr(env, "Invalid path");
+        return nullptr;
+    }
+
+    struct statvfs diskInfo;
+    int ret = statvfs(path.get(), &diskInfo);
+    if (ret != 0) {
+        NError(errno).ThrowErr(env);
+        return nullptr;
+    }
+    return NVal::CreateInt64(env, diskInfo.f_blocks).val_;
+}
+
+napi_value GetBlocks(napi_env env, napi_callback_info info)
+{
+    NFuncArg funcArg(env, info);
+    if (!funcArg.InitArgs(NARG_CNT::ONE, NARG_CNT::TWO)) {
+        NError(EINVAL).ThrowErr(env, "Number of arguments unmatched");
+        return nullptr;
+    }
+
+    bool succ = false;
+    std::unique_ptr<char []> path;
+    tie(succ, path, std::ignore) = NVal(env, funcArg[NARG_POS::FIRST]).ToUTF8String();
+    if (!succ) {
+        NError(EINVAL).ThrowErr(env, "Invalid path");
+        return nullptr;
+    }
+
+    auto resultSize = std::make_shared<unsigned long long>();
+    std::string pathString(path.get());
+    auto cbExec = [pathString, resultSize]() -> NError {
+        struct statvfs diskInfo;
+        int ret = statvfs(pathString.c_str(), &diskInfo);
+        if (ret != 0) {
+            return NError(errno);
+        }
+        *resultSize = diskInfo.f_blocks;
+        return NError(ERRNO_NOERR);
+    };
+    auto cbComplete = [resultSize](napi_env env, NError err) -> NVal {
+        if (err) {
+            return { env, err.GetNapiErr(env) };
+        }
+        return NVal::CreateInt64(env, *resultSize);
+    };
+
+    static const std::string procedureName = "GetBlocks";
+    NVal thisVar(env, funcArg.GetThisVar());
+    if (funcArg.GetArgc() == NARG_CNT::ONE) {
+        return NAsyncWorkPromise(env, thisVar).Schedule(procedureName, cbExec, cbComplete).val_;
+    }
+
+    NVal cb(env, funcArg[NARG_POS::SECOND]);
+    return NAsyncWorkCallback(env, thisVar, cb).Schedule(procedureName, cbExec, cbComplete).val_;
+}
+
+napi_value GetBFreeSync(napi_env env, napi_callback_info info)
+{
+    NFuncArg funcArg(env, info);
+    if (!funcArg.InitArgs(NARG_CNT::ONE)) {
+        NError(EINVAL).ThrowErr(env, "Number of arguments unmatched");
+        return nullptr;
+    }
+
+    bool succ = false;
+    std::unique_ptr<char[]> path;
+    tie(succ, path, std::ignore) = NVal(env, funcArg[NARG_POS::FIRST]).ToUTF8String();
+    if (!succ) {
+        NError(EINVAL).ThrowErr(env, "Invalid path");
+        return nullptr;
+    }
+
+    struct statvfs diskInfo;
+    int ret = statvfs(path.get(), &diskInfo);
+    if (ret != 0) {
+        NError(errno).ThrowErr(env);
+        return nullptr;
+    }
+    return NVal::CreateInt64(env, diskInfo.f_bfree).val_;
+}
+
+napi_value GetBFree(napi_env env, napi_callback_info info)
+{
+    NFuncArg funcArg(env, info);
+    if (!funcArg.InitArgs(NARG_CNT::ONE, NARG_CNT::TWO)) {
+        NError(EINVAL).ThrowErr(env, "Number of arguments unmatched");
+        return nullptr;
+    }
+
+    bool succ = false;
+    std::unique_ptr<char []> path;
+    tie(succ, path, std::ignore) = NVal(env, funcArg[NARG_POS::FIRST]).ToUTF8String();
+    if (!succ) {
+        NError(EINVAL).ThrowErr(env, "Invalid path");
+        return nullptr;
+    }
+
+    auto resultSize = std::make_shared<unsigned long long>();
+    std::string pathString(path.get());
+    auto cbExec = [pathString, resultSize]() -> NError {
+        struct statvfs diskInfo;
+        int ret = statvfs(pathString.c_str(), &diskInfo);
+        if (ret != 0) {
+            return NError(errno);
+        }
+        *resultSize = diskInfo.f_bfree;
+        return NError(ERRNO_NOERR);
+    };
+    auto cbComplete = [resultSize](napi_env env, NError err) -> NVal {
+        if (err) {
+            return { env, err.GetNapiErr(env) };
+        }
+        return NVal::CreateInt64(env, *resultSize);
+    };
+
+    static const std::string procedureName = "GetBFree";
+    NVal thisVar(env, funcArg.GetThisVar());
+    if (funcArg.GetArgc() == NARG_CNT::ONE) {
+        return NAsyncWorkPromise(env, thisVar).Schedule(procedureName, cbExec, cbComplete).val_;
+    }
+
+    NVal cb(env, funcArg[NARG_POS::SECOND]);
+    return NAsyncWorkCallback(env, thisVar, cb).Schedule(procedureName, cbExec, cbComplete).val_;
+}
+
+napi_value GetFreeBytesSync(napi_env env, napi_callback_info info)
+{
+    NFuncArg funcArg(env, info);
+    if (!funcArg.InitArgs(NARG_CNT::ONE)) {
+        NError(EINVAL).ThrowErr(env, "Number of arguments unmatched");
+        return nullptr;
+    }
+
+    bool succ = false;
+    std::unique_ptr<char[]> path;
+    tie(succ, path, std::ignore) = NVal(env, funcArg[NARG_POS::FIRST]).ToUTF8String();
+    if (!succ) {
+        NError(EINVAL).ThrowErr(env, "Invalid path");
+        return nullptr;
+    }
+
+    struct statvfs diskInfo;
+    int ret = statvfs(path.get(), &diskInfo);
+    if (ret != 0) {
+        NError(errno).ThrowErr(env);
+        return nullptr;
+    }
+    unsigned long long freeSize = static_cast<unsigned long long>(diskInfo.f_bsize) *
+                                  static_cast<unsigned long long>(diskInfo.f_bfree);
+    return NVal::CreateInt64(env, freeSize).val_;
+}
+
+napi_value GetFreeBytes(napi_env env, napi_callback_info info)
+{
+    NFuncArg funcArg(env, info);
+    if (!funcArg.InitArgs(NARG_CNT::ONE, NARG_CNT::TWO)) {
+        NError(EINVAL).ThrowErr(env, "Number of arguments unmatched");
+        return nullptr;
+    }
+
+    bool succ = false;
+    std::unique_ptr<char []> path;
+    tie(succ, path, std::ignore) = NVal(env, funcArg[NARG_POS::FIRST]).ToUTF8String();
+    if (!succ) {
+        NError(EINVAL).ThrowErr(env, "Invalid path");
+        return nullptr;
+    }
+
+    auto resultSize = std::make_shared<unsigned long long>();
+    std::string pathString(path.get());
+    auto cbExec = [pathString, resultSize]() -> NError {
+        struct statvfs diskInfo;
+        int ret = statvfs(pathString.c_str(), &diskInfo);
+        if (ret != 0) {
+            return NError(errno);
+        }
+        *resultSize = static_cast<unsigned long long>(diskInfo.f_bsize) *
+                      static_cast<unsigned long long>(diskInfo.f_bfree);
+        return NError(ERRNO_NOERR);
+    };
+    auto cbComplete = [resultSize](napi_env env, NError err) -> NVal {
+        if (err) {
+            return { env, err.GetNapiErr(env) };
+        }
+        return NVal::CreateInt64(env, *resultSize);
+    };
+
+    static const std::string procedureName = "GetFreeBytes";
+    NVal thisVar(env, funcArg.GetThisVar());
+    if (funcArg.GetArgc() == NARG_CNT::ONE) {
+        return NAsyncWorkPromise(env, thisVar).Schedule(procedureName, cbExec, cbComplete).val_;
+    }
+
+    NVal cb(env, funcArg[NARG_POS::SECOND]);
+    return NAsyncWorkCallback(env, thisVar, cb).Schedule(procedureName, cbExec, cbComplete).val_;
+}
+
+napi_value GetTotalBytesSync(napi_env env, napi_callback_info info)
+{
+    NFuncArg funcArg(env, info);
+    if (!funcArg.InitArgs(NARG_CNT::ONE)) {
+        NError(EINVAL).ThrowErr(env, "Number of arguments unmatched");
+        return nullptr;
+    }
+
+    bool succ = false;
+    std::unique_ptr<char[]> path;
+    tie(succ, path, std::ignore) = NVal(env, funcArg[NARG_POS::FIRST]).ToUTF8String();
+    if (!succ) {
+        NError(EINVAL).ThrowErr(env, "Invalid path");
+        return nullptr;
+    }
+
+    struct statvfs diskInfo;
+    int ret = statvfs(path.get(), &diskInfo);
+    if (ret != 0) {
+        NError(errno).ThrowErr(env);
+        return nullptr;
+    }
+    unsigned long long totalSize = static_cast<unsigned long long>(diskInfo.f_bsize) *
+                                   static_cast<unsigned long long>(diskInfo.f_blocks);
+    return NVal::CreateInt64(env, totalSize).val_;
+}
+
+napi_value GetTotalBytes(napi_env env, napi_callback_info info)
+{
+    NFuncArg funcArg(env, info);
+    if (!funcArg.InitArgs(NARG_CNT::ONE, NARG_CNT::TWO)) {
+        NError(EINVAL).ThrowErr(env, "Number of arguments unmatched");
+        return nullptr;
+    }
+
+    bool succ = false;
+    std::unique_ptr<char []> path;
+    tie(succ, path, std::ignore) = NVal(env, funcArg[NARG_POS::FIRST]).ToUTF8String();
+    if (!succ) {
+        NError(EINVAL).ThrowErr(env, "Invalid path");
+        return nullptr;
+    }
+
+    auto resultSize = std::make_shared<unsigned long long>();
+    std::string pathString(path.get());
+    auto cbExec = [pathString, resultSize]() -> NError {
+        struct statvfs diskInfo;
+        int ret = statvfs(pathString.c_str(), &diskInfo);
+        if (ret != 0) {
+            return NError(errno);
+        }
+        *resultSize = static_cast<unsigned long long>(diskInfo.f_bsize) *
+                      static_cast<unsigned long long>(diskInfo.f_blocks);
+        return NError(ERRNO_NOERR);
+    };
+    auto cbComplete = [resultSize](napi_env env, NError err) -> NVal {
+        if (err) {
+            return { env, err.GetNapiErr(env) };
+        }
+        return { NVal::CreateInt64(env, *resultSize) };
+    };
+
+    static const std::string procedureName = "GetTotalBytes";
+    NVal thisVar(env, funcArg.GetThisVar());
+    if (funcArg.GetArgc() == NARG_CNT::ONE) {
+        return NAsyncWorkPromise(env, thisVar).Schedule(procedureName, cbExec, cbComplete).val_;
+    }
+
+    NVal cb(env, funcArg[NARG_POS::SECOND]);
+    return NAsyncWorkCallback(env, thisVar, cb).Schedule(procedureName, cbExec, cbComplete).val_;
+}
+} // namespace ModuleStatfs
+} // namespace DistributedFS
+} // namespace OHOS
diff --git a/interfaces/kits/js/src/mod_statfs/statfs_n_exporter.h b/interfaces/kits/js/src/mod_statfs/statfs_n_exporter.h
new file mode 100644
index 0000000000000000000000000000000000000000..dd25b1724926781155cab9fd431acff1d11309bf
--- /dev/null
+++ b/interfaces/kits/js/src/mod_statfs/statfs_n_exporter.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2021 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef STATFS_N_EXPORTER_H
+#define STATFS_N_EXPORTER_H
+
+#include "filemgmt_libn.h"
+
+namespace OHOS {
+namespace DistributedFS {
+namespace ModuleStatfs {
+napi_value GetFrSizeSync(napi_env env, napi_callback_info info);
+napi_value GetFrSize(napi_env env, napi_callback_info info);
+
+napi_value GetBSizeSync(napi_env env, napi_callback_info info);
+napi_value GetBSize(napi_env env, napi_callback_info info);
+
+napi_value GetBAvailSync(napi_env env, napi_callback_info info);
+napi_value GetBAvail(napi_env env, napi_callback_info info);
+
+napi_value GetBlocksSync(napi_env env, napi_callback_info info);
+napi_value GetBlocks(napi_env env, napi_callback_info info);
+
+napi_value GetBFreeSync(napi_env env, napi_callback_info info);
+napi_value GetBFree(napi_env env, napi_callback_info info);
+
+napi_value GetFreeBytesSync(napi_env env, napi_callback_info info);
+napi_value GetFreeBytes(napi_env env, napi_callback_info info);
+
+napi_value GetTotalBytesSync(napi_env env, napi_callback_info info);
+napi_value GetTotalBytes(napi_env env, napi_callback_info info);
+} // namespace ModuleStatfs
+} // namespace DistributedFS
+} // namespace OHOS
+#endif // STATFS_N_EXPORTER_H
\ No newline at end of file
diff --git a/interfaces/kits/js/src/mod_statfs/statfs_napi.cpp b/interfaces/kits/js/src/mod_statfs/statfs_napi.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..2c0f27dc2674bd5e3b381ae0dd3c5e7f87e14109
--- /dev/null
+++ b/interfaces/kits/js/src/mod_statfs/statfs_napi.cpp
@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2021-2022 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "statfs_n_exporter.h"
+
+namespace OHOS {
+namespace DistributedFS {
+namespace ModuleStatfs {
+/***********************************************
+ * Module export and register
+ ***********************************************/
+napi_value StatfsExport(napi_env env, napi_value exports)
+{
+    static napi_property_descriptor desc[] = {
+        DECLARE_NAPI_FUNCTION("getFreeBytes", GetFreeBytes),
+        DECLARE_NAPI_FUNCTION("getTotalBytes", GetTotalBytes),
+    };
+    NAPI_CALL(env, napi_define_properties(env, exports, sizeof(desc) / sizeof(desc[0]), desc));
+    return exports;
+}
+
+NAPI_MODULE(statfs, StatfsExport)
+} // namespace ModuleStatfs
+} // namespace DistributedFS
+} // namespace OHOS
\ No newline at end of file