2 * Copyright (c) 2011 Samsung Electronics Co., Ltd All Rights Reserved
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 * @file plugin-utils.cpp
20 * @brief Header file for plugin util
23 #include "plugin_utils.h"
24 #include <dpl/exception.h>
25 #include <dpl/log/log.h>
26 #include <dpl/wrt-dao-ro/global_config.h>
29 using namespace WrtDB;
31 namespace PluginUtils {
32 const char* PLUGIN_INSTALL_LOCK_FILE = "/tmp/.wrt_plugin_install_lock";
34 static int s_plugin_install_lock_fd = -1;
36 bool lockPluginInstallation()
40 LogInfo("Try to lock for plugins installation.");
42 s_plugin_install_lock_fd =
43 open(PLUGIN_INSTALL_LOCK_FILE, O_RDONLY | O_CREAT, 0666);
45 if (s_plugin_install_lock_fd == -1) {
46 LogError("Lock file open failed!");
51 ret = flock(s_plugin_install_lock_fd, LOCK_EX); //lock with waiting
54 LogError("Lock failed!");
56 close(s_plugin_install_lock_fd);
57 s_plugin_install_lock_fd = -1;
65 bool unlockPluginInstallation()
67 LogInfo("Unlock for plugins installation.");
69 if (s_plugin_install_lock_fd != -1) {
72 ret = flock(s_plugin_install_lock_fd, LOCK_UN); //unlock
75 LogError("Unlock failed!");
78 close(s_plugin_install_lock_fd);
79 s_plugin_install_lock_fd = -1;
83 LogError("Lock file was not created!");
89 bool checkPluginInstallationRequired()
91 std::string installRequest =
92 std::string(GlobalConfig::GetPluginInstallInitializerName());
94 FileState::Type installationRequest =
95 checkFile(installRequest);
97 switch (installationRequest) {
98 case FileState::FILE_EXISTS:
100 case FileState::FILE_NOT_EXISTS:
103 LogWarning("Opening installation request file failed");
108 bool removeInstallationRequiredFlag()
110 std::string installRequest =
111 std::string(GlobalConfig::GetPluginInstallInitializerName());
113 return removeFile(installRequest);
116 //checks if file exists and is regular file
117 FileState::Type checkFile(const std::string& filename)
121 if (-1 == stat(filename.c_str(), &tmp)) {
122 if (ENOENT == errno) {
123 return FileState::FILE_NOT_EXISTS;
125 return FileState::FILE_READ_DATA_ERROR;
126 } else if (!S_ISREG(tmp.st_mode)) {
127 return FileState::FILE_EXISTS_NOT_REGULAR;
129 return FileState::FILE_EXISTS;
132 bool removeFile(const std::string& filename)
134 if (0 != unlink(filename.c_str())) {
140 } //namespace PluginUtils