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 "fsync.h"
17
18 #include <cstring>
19 #include <tuple>
20 #include <unistd.h>
21
22 #include "common_func.h"
23 #include "filemgmt_libhilog.h"
24
25 namespace OHOS::FileManagement::ModuleFileIO {
26 using namespace std;
27 using namespace OHOS::FileManagement::LibN;
28
Sync(napi_env env,napi_callback_info info)29 napi_value Fsync::Sync(napi_env env, napi_callback_info info)
30 {
31 NFuncArg funcArg(env, info);
32 if (!funcArg.InitArgs(NARG_CNT::ONE)) {
33 HILOGE("Number of arguments unmatched");
34 NError(EINVAL).ThrowErr(env);
35 return nullptr;
36 }
37
38 auto [resGetFirstArg, fd] = NVal(env, funcArg[NARG_POS::FIRST]).ToInt32();
39 if (!resGetFirstArg) {
40 HILOGE("Invalid fd");
41 NError(EINVAL).ThrowErr(env);
42 return nullptr;
43 }
44
45 std::unique_ptr<uv_fs_t, decltype(CommonFunc::fs_req_cleanup)*> fsync_req = {
46 new uv_fs_t, CommonFunc::fs_req_cleanup };
47 if (!fsync_req) {
48 HILOGE("Failed to request heap memory.");
49 NError(ENOMEM).ThrowErr(env);
50 return nullptr;
51 }
52 int ret = uv_fs_fsync(nullptr, fsync_req.get(), fd, nullptr);
53 if (ret < 0) {
54 HILOGE("Failed to transfer data associated with file descriptor: %{public}d", fd);
55 NError(ret).ThrowErr(env);
56 return nullptr;
57 }
58 return NVal::CreateUndefined(env).val_;
59 }
60
Async(napi_env env,napi_callback_info info)61 napi_value Fsync::Async(napi_env env, napi_callback_info info)
62 {
63 NFuncArg funcArg(env, info);
64 if (!funcArg.InitArgs(NARG_CNT::ONE, NARG_CNT::TWO)) {
65 HILOGE("Number of arguments unmatched");
66 NError(EINVAL).ThrowErr(env);
67 return nullptr;
68 }
69
70 auto [resGetFirstArg, fd] = NVal(env, funcArg[NARG_POS::FIRST]).ToInt32();
71 if (!resGetFirstArg) {
72 HILOGE("Invalid fd");
73 NError(EINVAL).ThrowErr(env);
74 return nullptr;
75 }
76
77 auto cbExec = [fd = fd]() -> NError {
78 std::unique_ptr<uv_fs_t, decltype(CommonFunc::fs_req_cleanup)*> fsync_req = {
79 new uv_fs_t, CommonFunc::fs_req_cleanup };
80 if (!fsync_req) {
81 HILOGE("Failed to request heap memory.");
82 return NError(ENOMEM);
83 }
84 int ret = uv_fs_fsync(nullptr, fsync_req.get(), fd, nullptr);
85 if (ret < 0) {
86 HILOGE("Failed to transfer data associated with file descriptor: %{public}d", fd);
87 return NError(ret);
88 } else {
89 return NError(ERRNO_NOERR);
90 }
91 };
92
93 auto cbComplete = [](napi_env env, NError err) -> NVal {
94 if (err) {
95 return {env, err.GetNapiErr(env)};
96 } else {
97 return NVal::CreateUndefined(env);
98 }
99 };
100
101 size_t argc = funcArg.GetArgc();
102 NVal thisVar(env, funcArg.GetThisVar());
103 if (argc == NARG_CNT::ONE) {
104 return NAsyncWorkPromise(env, thisVar).Schedule(PROCEDURE_FSYNC_NAME, cbExec, cbComplete).val_;
105 } else {
106 NVal cb(env, funcArg[NARG_POS::SECOND]);
107 return NAsyncWorkCallback(env, thisVar, cb).Schedule(PROCEDURE_FSYNC_NAME, cbExec, cbComplete).val_;
108 }
109 }
110 } // namespace OHOS::FileManagement::ModuleFileIO