1 /*
2 * Copyright (C) 2020 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "unique_file.h"
18
19 #include <string>
20
21 #include <unistd.h>
22
23 #include <android-base/logging.h>
24
25 namespace android {
26 namespace installd {
27
UniqueFile()28 UniqueFile::UniqueFile() : UniqueFile(-1, "") {}
29
UniqueFile(int value,std::string path)30 UniqueFile::UniqueFile(int value, std::string path) : UniqueFile(value, path, nullptr) {}
31
UniqueFile(int value,std::string path,CleanUpFunction cleanup)32 UniqueFile::UniqueFile(int value, std::string path, CleanUpFunction cleanup)
33 : value_(value), path_(path), cleanup_(cleanup), do_cleanup_(true), auto_close_(true) {}
34
UniqueFile(UniqueFile && other)35 UniqueFile::UniqueFile(UniqueFile&& other) {
36 *this = std::move(other);
37 }
38
~UniqueFile()39 UniqueFile::~UniqueFile() {
40 reset();
41 }
42
operator =(UniqueFile && other)43 UniqueFile& UniqueFile::operator=(UniqueFile&& other) {
44 value_ = other.value_;
45 path_ = other.path_;
46 cleanup_ = other.cleanup_;
47 do_cleanup_ = other.do_cleanup_;
48 auto_close_ = other.auto_close_;
49 other.release();
50 return *this;
51 }
52
reset()53 void UniqueFile::reset() {
54 reset(-1, "");
55 }
56
reset(int new_value,std::string path,CleanUpFunction new_cleanup)57 void UniqueFile::reset(int new_value, std::string path, CleanUpFunction new_cleanup) {
58 if (auto_close_ && value_ >= 0) {
59 if (close(value_) < 0) {
60 PLOG(ERROR) << "Failed to close fd " << value_ << ", with path " << path;
61 }
62 }
63 if (do_cleanup_ && cleanup_ != nullptr) {
64 cleanup_(path_);
65 }
66
67 value_ = new_value;
68 path_ = path;
69 cleanup_ = new_cleanup;
70 }
71
release()72 void UniqueFile::release() {
73 value_ = -1;
74 path_ = "";
75 do_cleanup_ = false;
76 cleanup_ = nullptr;
77 }
78
79 } // namespace installd
80 } // namespace android
81