| /* <auto_header> |
| * <FILENAME> |
| * |
| * INTEL CONFIDENTIAL |
| * Copyright © 2011 Intel |
| * Corporation All Rights Reserved. |
| * |
| * The source code contained or described herein and all documents related to |
| * the source code ("Material") are owned by Intel Corporation or its suppliers |
| * or licensors. Title to the Material remains with Intel Corporation or its |
| * suppliers and licensors. The Material contains trade secrets and proprietary |
| * and confidential information of Intel or its suppliers and licensors. The |
| * Material is protected by worldwide copyright and trade secret laws and |
| * treaty provisions. No part of the Material may be used, copied, reproduced, |
| * modified, published, uploaded, posted, transmitted, distributed, or |
| * disclosed in any way without Intel’s prior express written permission. |
| * |
| * No license under any patent, copyright, trade secret or other intellectual |
| * property right is granted to or conferred upon you by disclosure or delivery |
| * of the Materials, either expressly, by implication, inducement, estoppel or |
| * otherwise. Any license under such intellectual property rights must be |
| * express and approved by Intel in writing. |
| * |
| * AUTHOR: Patrick Benavoli (patrickx.benavoli@intel.com) |
| * CREATED: 2011-06-01 |
| * UPDATED: 2011-07-27 |
| * |
| * |
| * </auto_header> |
| */ |
| #include <dlfcn.h> |
| #include <dirent.h> |
| #include "SystemClass.h" |
| #include "SubsystemLibrary.h" |
| #include "AutoLog.h" |
| |
| #define base CConfigurableElement |
| |
| // Used by subsystem plugins |
| typedef void (*GetSusbystemBuilder)(CSubsystemLibrary*); |
| |
| CSystemClass::CSystemClass(const string& strName) : base(strName), _pSubsystemLibrary(new CSubsystemLibrary) |
| { |
| } |
| |
| CSystemClass::~CSystemClass() |
| { |
| delete _pSubsystemLibrary; |
| } |
| |
| bool CSystemClass::childrenAreDynamic() const |
| { |
| return true; |
| } |
| |
| string CSystemClass::getKind() const |
| { |
| return "SystemClass"; |
| } |
| |
| bool CSystemClass::loadSubsystems(string& strError, const vector<string>& astrPluginFolderPaths) |
| { |
| CAutoLog autoLlog(this, "Loading subsystem plugins"); |
| |
| // Plugin list |
| vector<string> astrPluginFiles; |
| |
| uint32_t uiFolderLocation; |
| |
| for (uiFolderLocation = 0; uiFolderLocation < astrPluginFolderPaths.size(); uiFolderLocation++) { |
| |
| // Folder for current SystemClass |
| string strPluginPath = astrPluginFolderPaths[uiFolderLocation] + "/" + getName() + "/"; |
| |
| // Get plugin list |
| getPluginFiles(strPluginPath, astrPluginFiles); |
| } |
| // Check at least one subsystem plugin available |
| if (!astrPluginFiles.size()) { |
| |
| // No plugin found? |
| strError = "No subsystem plugin found"; |
| } |
| |
| // Actually load plugins |
| uint32_t uiPlugin; |
| // Start clean |
| _pSubsystemLibrary->clean(); |
| |
| for (uiPlugin = 0; uiPlugin < astrPluginFiles.size(); uiPlugin++) { |
| |
| string strPluginFileName = astrPluginFiles[uiPlugin]; |
| |
| log("Loading subsystem plugin path \"%s\"", strPluginFileName.c_str()); |
| |
| void* lib_handle = dlopen(strPluginFileName.c_str(), RTLD_LAZY); |
| |
| if (!lib_handle) { |
| |
| // Return error |
| const char* pcError = dlerror(); |
| |
| if (pcError) { |
| |
| strError = pcError; |
| } else { |
| |
| strError = "Unable to load subsystem plugin " + strPluginFileName; |
| } |
| |
| _pSubsystemLibrary->clean(); |
| |
| return false; |
| } |
| |
| GetSusbystemBuilder pfnGetSusbystemBuilder = (GetSusbystemBuilder)dlsym(lib_handle, "getSusbystemBuilder"); |
| |
| if (!pfnGetSusbystemBuilder) { |
| |
| strError = "Subsystem plugin " + strPluginFileName + " does not contain getSusbystemBuilder symbol."; |
| |
| _pSubsystemLibrary->clean(); |
| |
| return false; |
| } |
| |
| // Fill library |
| pfnGetSusbystemBuilder(_pSubsystemLibrary); |
| } |
| |
| return true; |
| } |
| |
| bool CSystemClass::getPluginFiles(const string& strPluginPath, vector<string>& astrPluginFiles) const |
| { |
| log("Seeking subsystem plugins from folder \"%s\"", strPluginPath.c_str()); |
| |
| DIR *dirp; |
| struct dirent *dp; |
| |
| if ((dirp = opendir(strPluginPath.c_str())) == NULL) { |
| |
| return false; |
| } |
| |
| const string strPluginPattern("-subsystem.so"); |
| |
| // Parse it and load plugins |
| while ((dp = readdir(dirp)) != NULL) { |
| |
| string strFileName(dp->d_name); |
| |
| // Check file name ends with "-susbsystem.so" |
| size_t uiPatternPos = strFileName.rfind(strPluginPattern, -1); |
| |
| if (uiPatternPos != (size_t)-1 && uiPatternPos == strFileName.size() - strPluginPattern.size()) { |
| // Found plugin |
| astrPluginFiles.push_back(strPluginPath + strFileName); |
| } |
| } |
| |
| // Close plugin folder |
| closedir(dirp); |
| |
| return true; |
| } |
| |
| const CSubsystemLibrary* CSystemClass::getSubsystemLibrary() const |
| { |
| return _pSubsystemLibrary; |
| } |
| |
| bool CSystemClass::init(string& strError) |
| { |
| return base::init(strError); |
| } |
| |