1 /*
2 * Copyright (C) 2010 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 "unclean_shutdown_collector.h"
18
19 #include <base/files/file_util.h>
20 #include <base/logging.h>
21
22 static const char kUncleanShutdownFile[] =
23 "/var/lib/crash_reporter/pending_clean_shutdown";
24
25 // Files created by power manager used for crash reporting.
26 static const char kPowerdTracePath[] = "/var/lib/power_manager";
27 // Presence of this file indicates that the system was suspended
28 static const char kPowerdSuspended[] = "powerd_suspended";
29
30 using base::FilePath;
31
UncleanShutdownCollector()32 UncleanShutdownCollector::UncleanShutdownCollector()
33 : unclean_shutdown_file_(kUncleanShutdownFile),
34 powerd_trace_path_(kPowerdTracePath),
35 powerd_suspended_file_(powerd_trace_path_.Append(kPowerdSuspended)) {
36 }
37
~UncleanShutdownCollector()38 UncleanShutdownCollector::~UncleanShutdownCollector() {
39 }
40
Enable()41 bool UncleanShutdownCollector::Enable() {
42 FilePath file_path(unclean_shutdown_file_);
43 base::CreateDirectory(file_path.DirName());
44 if (base::WriteFile(file_path, "", 0) != 0) {
45 LOG(ERROR) << "Unable to create shutdown check file";
46 return false;
47 }
48 return true;
49 }
50
DeleteUncleanShutdownFiles()51 bool UncleanShutdownCollector::DeleteUncleanShutdownFiles() {
52 if (!base::DeleteFile(FilePath(unclean_shutdown_file_), false)) {
53 LOG(ERROR) << "Failed to delete unclean shutdown file "
54 << unclean_shutdown_file_;
55 return false;
56 }
57 // Delete power manager state file if it exists.
58 base::DeleteFile(powerd_suspended_file_, false);
59 return true;
60 }
61
Collect()62 bool UncleanShutdownCollector::Collect() {
63 FilePath unclean_file_path(unclean_shutdown_file_);
64 if (!base::PathExists(unclean_file_path)) {
65 return false;
66 }
67 LOG(WARNING) << "Last shutdown was not clean";
68 if (DeadBatteryCausedUncleanShutdown()) {
69 DeleteUncleanShutdownFiles();
70 return false;
71 }
72 DeleteUncleanShutdownFiles();
73
74 if (is_feedback_allowed_function_()) {
75 count_crash_function_();
76 }
77 return true;
78 }
79
Disable()80 bool UncleanShutdownCollector::Disable() {
81 LOG(INFO) << "Clean shutdown signalled";
82 return DeleteUncleanShutdownFiles();
83 }
84
DeadBatteryCausedUncleanShutdown()85 bool UncleanShutdownCollector::DeadBatteryCausedUncleanShutdown() {
86 // Check for case of battery running out while suspended.
87 if (base::PathExists(powerd_suspended_file_)) {
88 LOG(INFO) << "Unclean shutdown occurred while suspended. Not counting "
89 << "toward unclean shutdown statistic.";
90 return true;
91 }
92 return false;
93 }
94