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Shawn McCarneyde5434d2024-05-22 14:07:44 -05001/**
2 * Copyright © 2024 IBM Corporation
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 "temporary_subdirectory.hpp"
18
19#include <errno.h> // for errno
20#include <stdlib.h> // for mkdtemp()
21#include <string.h> // for strerror()
22
23#include <stdexcept>
24#include <string>
25
26namespace phosphor::power::util
27{
28
29namespace fs = std::filesystem;
30
31TemporarySubDirectory::TemporarySubDirectory()
32{
33 // Build template path required by mkdtemp()
Patrick Williamsf5402192024-08-16 15:20:53 -040034 std::string templatePath =
35 fs::temp_directory_path() / "phosphor-power-XXXXXX";
Shawn McCarneyde5434d2024-05-22 14:07:44 -050036
37 // Generate unique subdirectory name and create it. The XXXXXX characters
38 // are replaced by mkdtemp() to make the subdirectory name unique.
39 char* retVal = mkdtemp(templatePath.data());
40 if (retVal == nullptr)
41 {
42 throw std::runtime_error{
43 std::string{"Unable to create temporary subdirectory: "} +
44 strerror(errno)};
45 }
46
47 // Store path to temporary subdirectory
48 path = templatePath;
49}
50
51TemporarySubDirectory&
52 TemporarySubDirectory::operator=(TemporarySubDirectory&& subdirectory)
53{
54 // Verify not assigning object to itself (a = std::move(a))
55 if (this != &subdirectory)
56 {
57 // Delete temporary subdirectory owned by this object
58 remove();
59
60 // Move subdirectory path from other object, transferring ownership
61 path = std::move(subdirectory.path);
62
63 // Clear path in other object; after move path is in unspecified state
64 subdirectory.path.clear();
65 }
66 return *this;
67}
68
69void TemporarySubDirectory::remove()
70{
71 if (!path.empty())
72 {
73 // Delete temporary subdirectory from file system
74 fs::remove_all(path);
75
76 // Clear path to indicate subdirectory has been deleted
77 path.clear();
78 }
79}
80
81} // namespace phosphor::power::util