1 /*
2  * Copyright (c) 2022-2023 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 "b_process/b_guard_cwd.h"
17 #include "b_error/b_error.h"
18 
19 #include <cstdlib>
20 #include <unistd.h>
21 
22 namespace OHOS::FileManagement::Backup {
23 using namespace std;
24 
BGuardCwd(std::string_view tgtDir)25 BGuardCwd::BGuardCwd(std::string_view tgtDir)
26 {
27     pwd_ = getcwd(nullptr, 0);
28     if (!pwd_) {
29         throw BError(BError::Codes::UTILS_INVAL_PROCESS_ARG, "Out of memory");
30     }
31     if (chdir(tgtDir.data())) {
32         std::free(pwd_);
33         throw BError(BError::Codes::UTILS_INVAL_PROCESS_ARG, std::generic_category().message(errno));
34     }
35 }
36 
~BGuardCwd()37 BGuardCwd::~BGuardCwd()
38 {
39     chdir(pwd_);
40     free(pwd_);
41 }
42 } // namespace OHOS::FileManagement::Backup
43