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