1 /*
2  * Copyright 2019 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 "os/parameter_provider.h"
18 
19 #include <unistd.h>
20 
21 #include <cerrno>
22 #include <mutex>
23 #include <string>
24 
25 #include "os/log.h"
26 
27 namespace bluetooth {
28 namespace os {
29 
30 namespace {
31 std::mutex parameter_mutex;
32 std::string config_file_path;
33 std::string snoop_log_file_path;
34 std::string snooz_log_file_path;
35 }  // namespace
36 
37 // Write to $PWD/bt_stack.conf if $PWD can be found, otherwise, write to $HOME/bt_stack.conf
ConfigFilePath()38 std::string ParameterProvider::ConfigFilePath() {
39   {
40     std::lock_guard<std::mutex> lock(parameter_mutex);
41     if (!config_file_path.empty()) {
42       return config_file_path;
43     }
44   }
45   return "/etc/bluetooth/bt_config.conf";
46 }
47 
OverrideConfigFilePath(const std::string & path)48 void ParameterProvider::OverrideConfigFilePath(const std::string& path) {
49   std::lock_guard<std::mutex> lock(parameter_mutex);
50   config_file_path = path;
51 }
52 
SnoopLogFilePath()53 std::string ParameterProvider::SnoopLogFilePath() {
54   {
55     std::lock_guard<std::mutex> lock(parameter_mutex);
56     if (!snoop_log_file_path.empty()) {
57       return snoop_log_file_path;
58     }
59   }
60 
61   return "/etc/bluetooth/btsnoop_hci.log";
62 }
63 
OverrideSnoopLogFilePath(const std::string & path)64 void ParameterProvider::OverrideSnoopLogFilePath(const std::string& path) {
65   std::lock_guard<std::mutex> lock(parameter_mutex);
66   snoop_log_file_path = path;
67 }
68 
SnoozLogFilePath()69 std::string ParameterProvider::SnoozLogFilePath() {
70   {
71     std::lock_guard<std::mutex> lock(parameter_mutex);
72     if (!snooz_log_file_path.empty()) {
73       return snooz_log_file_path;
74     }
75   }
76   return "/etc/bluetooth/btsnooz_hci.log";
77 }
78 
79 }  // namespace os
80 }  // namespace bluetooth
81