Brad Bishop | 099543e | 2020-11-09 15:37:58 -0500 | [diff] [blame] | 1 | // SPDX-License-Identifier: Apache-2.0 |
| 2 | |
| 3 | /**@file functions.cpp*/ |
| 4 | |
Adriana Kobylak | 56f538c | 2021-06-16 20:37:21 +0000 | [diff] [blame^] | 5 | #include "config.h" |
| 6 | |
Brad Bishop | 099543e | 2020-11-09 15:37:58 -0500 | [diff] [blame] | 7 | #include "functions.hpp" |
| 8 | |
Adriana Kobylak | 56f538c | 2021-06-16 20:37:21 +0000 | [diff] [blame^] | 9 | #include <phosphor-logging/log.hpp> |
Brad Bishop | 099543e | 2020-11-09 15:37:58 -0500 | [diff] [blame] | 10 | #include <sdbusplus/bus.hpp> |
| 11 | #include <sdbusplus/bus/match.hpp> |
Adriana Kobylak | c79fa91 | 2021-06-22 15:37:50 +0000 | [diff] [blame] | 12 | #include <sdbusplus/exception.hpp> |
Brad Bishop | 099543e | 2020-11-09 15:37:58 -0500 | [diff] [blame] | 13 | #include <sdbusplus/message.hpp> |
| 14 | #include <sdeventplus/event.hpp> |
| 15 | |
| 16 | #include <filesystem> |
| 17 | #include <functional> |
| 18 | #include <iostream> |
| 19 | #include <map> |
| 20 | #include <memory> |
| 21 | #include <string> |
| 22 | #include <variant> |
| 23 | #include <vector> |
| 24 | |
| 25 | namespace functions |
| 26 | { |
| 27 | namespace process_hostfirmware |
| 28 | { |
| 29 | |
Adriana Kobylak | 56f538c | 2021-06-16 20:37:21 +0000 | [diff] [blame^] | 30 | using namespace phosphor::logging; |
| 31 | |
Brad Bishop | 099543e | 2020-11-09 15:37:58 -0500 | [diff] [blame] | 32 | /** |
| 33 | * @brief Issue callbacks safely |
| 34 | * |
| 35 | * std::function can be empty, so this wrapper method checks for that prior to |
| 36 | * calling it to avoid std::bad_function_call |
| 37 | * |
| 38 | * @tparam Sig the types of the std::function arguments |
| 39 | * @tparam Args the deduced argument types |
| 40 | * @param[in] callback the callback being wrapped |
| 41 | * @param[in] args the callback arguments |
| 42 | */ |
| 43 | template <typename... Sig, typename... Args> |
| 44 | void makeCallback(const std::function<void(Sig...)>& callback, Args&&... args) |
| 45 | { |
| 46 | if (callback) |
| 47 | { |
| 48 | callback(std::forward<Args>(args)...); |
| 49 | } |
| 50 | } |
| 51 | |
| 52 | /** |
| 53 | * @brief Get file extensions for IBMCompatibleSystem |
| 54 | * |
| 55 | * IBM host firmware can be deployed as blobs (files) in a filesystem. Host |
| 56 | * firmware blobs for different values of |
| 57 | * xyz.openbmc_project.Configuration.IBMCompatibleSystem are packaged with |
| 58 | * different filename extensions. getExtensionsForIbmCompatibleSystem |
| 59 | * maintains the mapping from a given value of |
| 60 | * xyz.openbmc_project.Configuration.IBMCompatibleSystem to an array of |
| 61 | * filename extensions. |
| 62 | * |
| 63 | * If a mapping is found getExtensionsForIbmCompatibleSystem returns true and |
| 64 | * the extensions parameter is reset with the map entry. If no mapping is |
| 65 | * found getExtensionsForIbmCompatibleSystem returns false and extensions is |
| 66 | * unmodified. |
| 67 | * |
| 68 | * @param[in] extensionMap a map of |
| 69 | * xyz.openbmc_project.Configuration.IBMCompatibleSystem to host firmware blob |
| 70 | * file extensions. |
| 71 | * @param[in] ibmCompatibleSystem The names property of an instance of |
| 72 | * xyz.openbmc_project.Configuration.IBMCompatibleSystem |
| 73 | * @param[out] extentions the host firmware blob file extensions |
| 74 | * @return true if an entry was found, otherwise false |
| 75 | */ |
| 76 | bool getExtensionsForIbmCompatibleSystem( |
| 77 | const std::map<std::string, std::vector<std::string>>& extensionMap, |
| 78 | const std::vector<std::string>& ibmCompatibleSystem, |
| 79 | std::vector<std::string>& extensions) |
| 80 | { |
| 81 | for (const auto& system : ibmCompatibleSystem) |
| 82 | { |
| 83 | auto extensionMapIterator = extensionMap.find(system); |
| 84 | if (extensionMapIterator != extensionMap.end()) |
| 85 | { |
| 86 | extensions = extensionMapIterator->second; |
| 87 | return true; |
| 88 | } |
| 89 | } |
| 90 | |
| 91 | return false; |
| 92 | } |
| 93 | |
| 94 | /** |
| 95 | * @brief Write host firmware well-known name |
| 96 | * |
| 97 | * A wrapper around std::filesystem::create_symlink that avoids EEXIST by |
| 98 | * deleting any pre-existing file. |
| 99 | * |
| 100 | * @param[in] linkTarget The link target argument to |
| 101 | * std::filesystem::create_symlink |
| 102 | * @param[in] linkPath The link path argument to std::filesystem::create_symlink |
| 103 | * @param[in] errorCallback A callback made in the event of filesystem errors. |
| 104 | */ |
| 105 | void writeLink(const std::filesystem::path& linkTarget, |
| 106 | const std::filesystem::path& linkPath, |
| 107 | const ErrorCallbackType& errorCallback) |
| 108 | { |
| 109 | std::error_code ec; |
| 110 | |
| 111 | // remove files with the same name as the symlink to be created, |
| 112 | // otherwise symlink will fail with EEXIST. |
| 113 | if (!std::filesystem::remove(linkPath, ec)) |
| 114 | { |
| 115 | if (ec) |
| 116 | { |
| 117 | makeCallback(errorCallback, linkPath, ec); |
| 118 | return; |
| 119 | } |
| 120 | } |
| 121 | |
| 122 | std::filesystem::create_symlink(linkTarget, linkPath, ec); |
| 123 | if (ec) |
| 124 | { |
| 125 | makeCallback(errorCallback, linkPath, ec); |
| 126 | return; |
| 127 | } |
| 128 | } |
| 129 | |
| 130 | /** |
| 131 | * @brief Find host firmware blob files that need well-known names |
| 132 | * |
| 133 | * The IBM host firmware runtime looks for data and/or additional code while |
| 134 | * bootstraping in files with well-known names. findLinks uses the provided |
| 135 | * extensions argument to find host firmware blob files that require a |
| 136 | * well-known name. When a blob is found, issue the provided callback |
| 137 | * (typically a function that will write a symlink). |
| 138 | * |
| 139 | * @param[in] hostFirmwareDirectory The directory in which findLinks should |
| 140 | * look for host firmware blob files that need well-known names. |
| 141 | * @param[in] extentions The extensions of the firmware blob files denote a |
| 142 | * host firmware blob file requires a well-known name. |
| 143 | * @param[in] errorCallback A callback made in the event of filesystem errors. |
| 144 | * @param[in] linkCallback A callback made when host firmware blob files |
| 145 | * needing a well known name are found. |
| 146 | */ |
| 147 | void findLinks(const std::filesystem::path& hostFirmwareDirectory, |
| 148 | const std::vector<std::string>& extensions, |
| 149 | const ErrorCallbackType& errorCallback, |
| 150 | const LinkCallbackType& linkCallback) |
| 151 | { |
| 152 | std::error_code ec; |
| 153 | std::filesystem::directory_iterator directoryIterator(hostFirmwareDirectory, |
| 154 | ec); |
| 155 | if (ec) |
| 156 | { |
| 157 | makeCallback(errorCallback, hostFirmwareDirectory, ec); |
| 158 | return; |
| 159 | } |
| 160 | |
Adriana Kobylak | fdc91fa | 2021-05-20 16:00:45 +0000 | [diff] [blame] | 161 | // Create a symlink from HBB to the corresponding LID file if it exists |
| 162 | static const auto hbbLid = "81e0065a.lid"; |
| 163 | auto hbbLidPath = hostFirmwareDirectory / hbbLid; |
| 164 | if (std::filesystem::exists(hbbLidPath)) |
| 165 | { |
| 166 | static const auto hbbName = "HBB"; |
| 167 | auto hbbLinkPath = hostFirmwareDirectory / hbbName; |
| 168 | makeCallback(linkCallback, hbbLid, hbbLinkPath, errorCallback); |
| 169 | } |
| 170 | |
Brad Bishop | 099543e | 2020-11-09 15:37:58 -0500 | [diff] [blame] | 171 | for (; directoryIterator != std::filesystem::end(directoryIterator); |
| 172 | directoryIterator.increment(ec)) |
| 173 | { |
| 174 | const auto& file = directoryIterator->path(); |
| 175 | if (ec) |
| 176 | { |
| 177 | makeCallback(errorCallback, file, ec); |
| 178 | // quit here if the increment call failed otherwise the loop may |
| 179 | // never finish |
| 180 | break; |
| 181 | } |
| 182 | |
| 183 | if (std::find(extensions.begin(), extensions.end(), file.extension()) == |
| 184 | extensions.end()) |
| 185 | { |
| 186 | // this file doesn't have an extension or doesn't match any of the |
| 187 | // provided extensions. |
| 188 | continue; |
| 189 | } |
| 190 | |
| 191 | auto linkPath(file.parent_path().append( |
| 192 | static_cast<const std::string&>(file.stem()))); |
| 193 | |
| 194 | makeCallback(linkCallback, file.filename(), linkPath, errorCallback); |
| 195 | } |
| 196 | } |
| 197 | |
| 198 | /** |
Adriana Kobylak | 53a2739 | 2021-06-14 17:42:40 +0000 | [diff] [blame] | 199 | * @brief Set the bios attribute table with details of the host firmware data |
| 200 | * for this system. |
| 201 | */ |
| 202 | void setBiosAttr() |
Adriana Kobylak | 56f538c | 2021-06-16 20:37:21 +0000 | [diff] [blame^] | 203 | { |
| 204 | std::string biosAttrStr{}; |
| 205 | |
| 206 | constexpr auto biosConfigPath = "/xyz/openbmc_project/bios_config/manager"; |
| 207 | constexpr auto biosConfigIntf = "xyz.openbmc_project.BIOSConfig.Manager"; |
| 208 | constexpr auto dbusAttrName = "hb_lid_ids"; |
| 209 | constexpr auto dbusAttrType = |
| 210 | "xyz.openbmc_project.BIOSConfig.Manager.AttributeType.String"; |
| 211 | |
| 212 | using PendingAttributesType = std::vector<std::pair< |
| 213 | std::string, std::tuple<std::string, std::variant<std::string>>>>; |
| 214 | PendingAttributesType pendingAttributes; |
| 215 | pendingAttributes.emplace_back(std::make_pair( |
| 216 | dbusAttrName, std::make_tuple(dbusAttrType, biosAttrStr))); |
| 217 | |
| 218 | auto bus = sdbusplus::bus::new_default(); |
| 219 | auto method = bus.new_method_call(MAPPER_BUSNAME, MAPPER_PATH, |
| 220 | MAPPER_INTERFACE, "GetObject"); |
| 221 | method.append(biosConfigPath, std::vector<std::string>({biosConfigIntf})); |
| 222 | std::vector<std::pair<std::string, std::vector<std::string>>> response; |
| 223 | try |
| 224 | { |
| 225 | auto reply = bus.call(method); |
| 226 | reply.read(response); |
| 227 | if (response.empty()) |
| 228 | { |
| 229 | log<level::ERR>("Error reading mapper response", |
| 230 | entry("PATH=%s", biosConfigPath), |
| 231 | entry("INTERFACE=%s", biosConfigIntf)); |
| 232 | return; |
| 233 | } |
| 234 | auto method = bus.new_method_call((response.begin()->first).c_str(), |
| 235 | biosConfigPath, |
| 236 | SYSTEMD_PROPERTY_INTERFACE, "Set"); |
| 237 | method.append(biosConfigIntf, "PendingAttributes", |
| 238 | std::variant<PendingAttributesType>(pendingAttributes)); |
| 239 | bus.call(method); |
| 240 | } |
| 241 | catch (const sdbusplus::exception::SdBusError& e) |
| 242 | { |
| 243 | log<level::ERR>("Error setting the bios attribute", |
| 244 | entry("ERROR=%s", e.what()), |
| 245 | entry("ATTRIBUTE=%s", dbusAttrName)); |
| 246 | return; |
| 247 | } |
| 248 | } |
Adriana Kobylak | 53a2739 | 2021-06-14 17:42:40 +0000 | [diff] [blame] | 249 | |
| 250 | /** |
Brad Bishop | 099543e | 2020-11-09 15:37:58 -0500 | [diff] [blame] | 251 | * @brief Make callbacks on |
| 252 | * xyz.openbmc_project.Configuration.IBMCompatibleSystem instances. |
| 253 | * |
| 254 | * Look for an instance of |
| 255 | * xyz.openbmc_project.Configuration.IBMCompatibleSystem in the provided |
| 256 | * argument and if found, issue the provided callback. |
| 257 | * |
| 258 | * @param[in] interfacesAndProperties the interfaces in which to look for an |
| 259 | * instance of xyz.openbmc_project.Configuration.IBMCompatibleSystem |
| 260 | * @param[in] callback the user callback to make if |
| 261 | * xyz.openbmc_project.Configuration.IBMCompatibleSystem is found in |
| 262 | * interfacesAndProperties |
| 263 | * @return true if interfacesAndProperties contained an instance of |
| 264 | * xyz.openbmc_project.Configuration.IBMCompatibleSystem, false otherwise |
| 265 | */ |
| 266 | bool maybeCall(const std::map<std::string, |
| 267 | std::map<std::string, |
| 268 | std::variant<std::vector<std::string>>>>& |
| 269 | interfacesAndProperties, |
| 270 | const MaybeCallCallbackType& callback) |
| 271 | { |
| 272 | using namespace std::string_literals; |
| 273 | |
| 274 | static const auto interfaceName = |
| 275 | "xyz.openbmc_project.Configuration.IBMCompatibleSystem"s; |
| 276 | auto interfaceIterator = interfacesAndProperties.find(interfaceName); |
| 277 | if (interfaceIterator == interfacesAndProperties.cend()) |
| 278 | { |
| 279 | // IBMCompatibleSystem interface not found, so instruct the caller to |
| 280 | // keep waiting or try again later. |
| 281 | return false; |
| 282 | } |
| 283 | auto propertyIterator = interfaceIterator->second.find("Names"s); |
| 284 | if (propertyIterator == interfaceIterator->second.cend()) |
| 285 | { |
| 286 | // The interface exists but the property doesn't. This is a bug in the |
| 287 | // IBMCompatibleSystem implementation. The caller should not try |
| 288 | // again. |
| 289 | std::cerr << "Names property not implemented on " << interfaceName |
| 290 | << "\n"; |
| 291 | return true; |
| 292 | } |
| 293 | |
| 294 | const auto& ibmCompatibleSystem = |
| 295 | std::get<std::vector<std::string>>(propertyIterator->second); |
| 296 | if (callback) |
| 297 | { |
| 298 | callback(ibmCompatibleSystem); |
| 299 | } |
| 300 | |
| 301 | // IBMCompatibleSystem found and callback issued. |
| 302 | return true; |
| 303 | } |
| 304 | |
| 305 | /** |
| 306 | * @brief Make callbacks on |
| 307 | * xyz.openbmc_project.Configuration.IBMCompatibleSystem instances. |
| 308 | * |
| 309 | * Look for an instance of |
| 310 | * xyz.openbmc_project.Configuration.IBMCompatibleSystem in the provided |
| 311 | * argument and if found, issue the provided callback. |
| 312 | * |
| 313 | * @param[in] message the DBus message in which to look for an instance of |
| 314 | * xyz.openbmc_project.Configuration.IBMCompatibleSystem |
| 315 | * @param[in] callback the user callback to make if |
| 316 | * xyz.openbmc_project.Configuration.IBMCompatibleSystem is found in |
| 317 | * message |
| 318 | * @return true if message contained an instance of |
| 319 | * xyz.openbmc_project.Configuration.IBMCompatibleSystem, false otherwise |
| 320 | */ |
| 321 | bool maybeCallMessage(sdbusplus::message::message& message, |
| 322 | const MaybeCallCallbackType& callback) |
| 323 | { |
| 324 | std::map<std::string, |
| 325 | std::map<std::string, std::variant<std::vector<std::string>>>> |
| 326 | interfacesAndProperties; |
| 327 | sdbusplus::message::object_path _; |
| 328 | message.read(_, interfacesAndProperties); |
| 329 | return maybeCall(interfacesAndProperties, callback); |
| 330 | } |
| 331 | |
| 332 | /** |
| 333 | * @brief Determine system support for host firmware well-known names. |
| 334 | * |
| 335 | * Using the provided extensionMap and |
| 336 | * xyz.openbmc_project.Configuration.IBMCompatibleSystem, determine if |
| 337 | * well-known names for host firmare blob files are necessary and if so, create |
| 338 | * them. |
| 339 | * |
| 340 | * @param[in] extensionMap a map of |
| 341 | * xyz.openbmc_project.Configuration.IBMCompatibleSystem to host firmware blob |
| 342 | * file extensions. |
| 343 | * @param[in] hostFirmwareDirectory The directory in which findLinks should |
| 344 | * look for host firmware blob files that need well-known names. |
| 345 | * @param[in] ibmCompatibleSystem The names property of an instance of |
| 346 | * xyz.openbmc_project.Configuration.IBMCompatibleSystem |
| 347 | * @param[in] errorCallback A callback made in the event of filesystem errors. |
| 348 | */ |
| 349 | void maybeMakeLinks( |
| 350 | const std::map<std::string, std::vector<std::string>>& extensionMap, |
| 351 | const std::filesystem::path& hostFirmwareDirectory, |
| 352 | const std::vector<std::string>& ibmCompatibleSystem, |
| 353 | const ErrorCallbackType& errorCallback) |
| 354 | { |
| 355 | std::vector<std::string> extensions; |
| 356 | if (getExtensionsForIbmCompatibleSystem(extensionMap, ibmCompatibleSystem, |
| 357 | extensions)) |
| 358 | { |
| 359 | findLinks(hostFirmwareDirectory, extensions, errorCallback, writeLink); |
| 360 | } |
| 361 | } |
| 362 | |
| 363 | /** |
Adriana Kobylak | 53a2739 | 2021-06-14 17:42:40 +0000 | [diff] [blame] | 364 | * @brief Determine system support for updating the bios attribute table. |
| 365 | * |
| 366 | * Using the provided extensionMap and |
| 367 | * xyz.openbmc_project.Configuration.IBMCompatibleSystem, determine if the bios |
| 368 | * attribute table needs to be updated. |
| 369 | * |
| 370 | * @param[in] extensionMap a map of |
| 371 | * xyz.openbmc_project.Configuration.IBMCompatibleSystem to host firmware blob |
| 372 | * file extensions. |
| 373 | * @param[in] ibmCompatibleSystem The names property of an instance of |
| 374 | * xyz.openbmc_project.Configuration.IBMCompatibleSystem |
| 375 | */ |
| 376 | void maybeSetBiosAttr( |
| 377 | const std::map<std::string, std::vector<std::string>>& extensionMap, |
| 378 | const std::vector<std::string>& ibmCompatibleSystem) |
| 379 | { |
| 380 | std::vector<std::string> extensions; |
| 381 | if (getExtensionsForIbmCompatibleSystem(extensionMap, ibmCompatibleSystem, |
| 382 | extensions)) |
| 383 | { |
| 384 | setBiosAttr(); |
| 385 | } |
| 386 | } |
| 387 | |
| 388 | /** |
Brad Bishop | 099543e | 2020-11-09 15:37:58 -0500 | [diff] [blame] | 389 | * @brief process host firmware |
| 390 | * |
| 391 | * Allocate a callback context and register for DBus.ObjectManager Interfaces |
| 392 | * added signals from entity manager. |
| 393 | * |
| 394 | * Check the current entity manager object tree for a |
| 395 | * xyz.openbmc_project.Configuration.IBMCompatibleSystem instance (entity |
| 396 | * manager will be dbus activated if it is not running). If one is found, |
| 397 | * determine if symlinks need to be created and create them. Instruct the |
| 398 | * program event loop to exit. |
| 399 | * |
| 400 | * If no instance of xyz.openbmc_project.Configuration.IBMCompatibleSystem is |
| 401 | * found return the callback context to main, where the program will sleep |
| 402 | * until the callback is invoked one or more times and instructs the program |
| 403 | * event loop to exit when |
| 404 | * xyz.openbmc_project.Configuration.IBMCompatibleSystem is added. |
| 405 | * |
| 406 | * @param[in] bus a DBus client connection |
| 407 | * @param[in] extensionMap a map of |
| 408 | * xyz.openbmc_project.Configuration.IBMCompatibleSystem to host firmware blob |
| 409 | * file extensions. |
| 410 | * @param[in] hostFirmwareDirectory The directory in which processHostFirmware |
| 411 | * should look for blob files. |
| 412 | * @param[in] errorCallback A callback made in the event of filesystem errors. |
| 413 | * @param[in] loop a program event loop |
| 414 | * @return nullptr if an instance of |
| 415 | * xyz.openbmc_project.Configuration.IBMCompatibleSystem is found, otherwise a |
| 416 | * pointer to an sdbusplus match object. |
| 417 | */ |
| 418 | std::shared_ptr<void> processHostFirmware( |
| 419 | sdbusplus::bus::bus& bus, |
| 420 | std::map<std::string, std::vector<std::string>> extensionMap, |
| 421 | std::filesystem::path hostFirmwareDirectory, |
| 422 | ErrorCallbackType errorCallback, sdeventplus::Event& loop) |
| 423 | { |
| 424 | // ownership of extensionMap, hostFirmwareDirectory and errorCallback can't |
| 425 | // be transfered to the match callback because they are needed in the non |
| 426 | // async part of this function below, so they need to be moved to the heap. |
| 427 | auto pExtensionMap = |
| 428 | std::make_shared<decltype(extensionMap)>(std::move(extensionMap)); |
| 429 | auto pHostFirmwareDirectory = |
| 430 | std::make_shared<decltype(hostFirmwareDirectory)>( |
| 431 | std::move(hostFirmwareDirectory)); |
| 432 | auto pErrorCallback = |
| 433 | std::make_shared<decltype(errorCallback)>(std::move(errorCallback)); |
| 434 | |
| 435 | // register for a callback in case the IBMCompatibleSystem interface has |
| 436 | // not yet been published by entity manager. |
| 437 | auto interfacesAddedMatch = std::make_shared<sdbusplus::bus::match::match>( |
| 438 | bus, |
| 439 | sdbusplus::bus::match::rules::interfacesAdded() + |
| 440 | sdbusplus::bus::match::rules::sender( |
| 441 | "xyz.openbmc_project.EntityManager"), |
| 442 | [pExtensionMap, pHostFirmwareDirectory, pErrorCallback, |
| 443 | &loop](auto& message) { |
| 444 | // bind the extension map, host firmware directory, and error |
| 445 | // callback to the maybeMakeLinks function. |
| 446 | auto maybeMakeLinksWithArgsBound = |
| 447 | std::bind(maybeMakeLinks, std::cref(*pExtensionMap), |
| 448 | std::cref(*pHostFirmwareDirectory), |
| 449 | std::placeholders::_1, std::cref(*pErrorCallback)); |
| 450 | |
| 451 | // if the InterfacesAdded message contains an an instance of |
| 452 | // xyz.openbmc_project.Configuration.IBMCompatibleSystem, check to |
| 453 | // see if links are necessary on this system and if so, create |
| 454 | // them. |
| 455 | if (maybeCallMessage(message, maybeMakeLinksWithArgsBound)) |
| 456 | { |
| 457 | // The IBMCompatibleSystem interface was found and the links |
| 458 | // were created if applicable. Instruct the event loop / |
| 459 | // subcommand to exit. |
| 460 | loop.exit(0); |
| 461 | } |
| 462 | }); |
| 463 | |
| 464 | // now that we'll get a callback in the event of an InterfacesAdded signal |
| 465 | // (potentially containing |
| 466 | // xyz.openbmc_project.Configuration.IBMCompatibleSystem), activate entity |
| 467 | // manager if it isn't running and enumerate its objects |
| 468 | auto getManagedObjects = bus.new_method_call( |
| 469 | "xyz.openbmc_project.EntityManager", "/", |
| 470 | "org.freedesktop.DBus.ObjectManager", "GetManagedObjects"); |
Brad Bishop | 099543e | 2020-11-09 15:37:58 -0500 | [diff] [blame] | 471 | std::map<std::string, |
| 472 | std::map<std::string, std::variant<std::vector<std::string>>>> |
| 473 | interfacesAndProperties; |
| 474 | std::map<sdbusplus::message::object_path, decltype(interfacesAndProperties)> |
| 475 | objects; |
Adriana Kobylak | c79fa91 | 2021-06-22 15:37:50 +0000 | [diff] [blame] | 476 | try |
| 477 | { |
| 478 | auto reply = bus.call(getManagedObjects); |
| 479 | reply.read(objects); |
| 480 | } |
| 481 | catch (const sdbusplus::exception::SdBusError& e) |
| 482 | { |
| 483 | // Error querying the EntityManager interface. Return the match to have |
| 484 | // the callback run if/when the interface appears in D-Bus. |
| 485 | return interfacesAddedMatch; |
| 486 | } |
Brad Bishop | 099543e | 2020-11-09 15:37:58 -0500 | [diff] [blame] | 487 | |
| 488 | // bind the extension map, host firmware directory, and error callback to |
| 489 | // the maybeMakeLinks function. |
| 490 | auto maybeMakeLinksWithArgsBound = |
| 491 | std::bind(maybeMakeLinks, std::cref(*pExtensionMap), |
| 492 | std::cref(*pHostFirmwareDirectory), std::placeholders::_1, |
| 493 | std::cref(*pErrorCallback)); |
| 494 | |
| 495 | for (const auto& pair : objects) |
| 496 | { |
| 497 | std::tie(std::ignore, interfacesAndProperties) = pair; |
| 498 | // if interfacesAndProperties contains an an instance of |
| 499 | // xyz.openbmc_project.Configuration.IBMCompatibleSystem, check to see |
| 500 | // if links are necessary on this system and if so, create them |
| 501 | if (maybeCall(interfacesAndProperties, maybeMakeLinksWithArgsBound)) |
| 502 | { |
| 503 | // The IBMCompatibleSystem interface is already on the bus and the |
| 504 | // links were created if applicable. Instruct the event loop to |
| 505 | // exit. |
| 506 | loop.exit(0); |
| 507 | // The match object isn't needed anymore, so destroy it on return. |
| 508 | return nullptr; |
| 509 | } |
| 510 | } |
| 511 | |
| 512 | // The IBMCompatibleSystem interface has not yet been published. Move |
| 513 | // ownership of the match callback to the caller. |
| 514 | return interfacesAddedMatch; |
| 515 | } |
Adriana Kobylak | 53a2739 | 2021-06-14 17:42:40 +0000 | [diff] [blame] | 516 | |
| 517 | /** |
| 518 | * @brief Update the Bios Attribute Table |
| 519 | * |
| 520 | * If an instance of xyz.openbmc_project.Configuration.IBMCompatibleSystem is |
| 521 | * found, update the Bios Attribute Table with the appropriate host firmware |
| 522 | * data. |
| 523 | * |
| 524 | * @param[in] bus - D-Bus client connection. |
| 525 | * @param[in] extensionMap - Map of IBMCompatibleSystem names and host firmware |
| 526 | * file extensions. |
| 527 | * @param[in] loop - Program event loop. |
| 528 | * @return nullptr |
| 529 | */ |
| 530 | std::shared_ptr<void> updateBiosAttrTable( |
| 531 | sdbusplus::bus::bus& bus, |
| 532 | std::map<std::string, std::vector<std::string>> extensionMap, |
| 533 | sdeventplus::Event& loop) |
| 534 | { |
| 535 | auto pExtensionMap = |
| 536 | std::make_shared<decltype(extensionMap)>(std::move(extensionMap)); |
| 537 | |
| 538 | auto getManagedObjects = bus.new_method_call( |
| 539 | "xyz.openbmc_project.EntityManager", "/", |
| 540 | "org.freedesktop.DBus.ObjectManager", "GetManagedObjects"); |
| 541 | std::map<std::string, |
| 542 | std::map<std::string, std::variant<std::vector<std::string>>>> |
| 543 | interfacesAndProperties; |
| 544 | std::map<sdbusplus::message::object_path, decltype(interfacesAndProperties)> |
| 545 | objects; |
| 546 | try |
| 547 | { |
| 548 | auto reply = bus.call(getManagedObjects); |
| 549 | reply.read(objects); |
| 550 | } |
| 551 | catch (const sdbusplus::exception::SdBusError& e) |
| 552 | {} |
| 553 | |
| 554 | auto maybeSetAttrWithArgsBound = std::bind( |
| 555 | maybeSetBiosAttr, std::cref(*pExtensionMap), std::placeholders::_1); |
| 556 | |
| 557 | for (const auto& pair : objects) |
| 558 | { |
| 559 | std::tie(std::ignore, interfacesAndProperties) = pair; |
| 560 | if (maybeCall(interfacesAndProperties, maybeSetAttrWithArgsBound)) |
| 561 | { |
| 562 | break; |
| 563 | } |
| 564 | } |
| 565 | |
| 566 | loop.exit(0); |
| 567 | return nullptr; |
| 568 | } |
| 569 | |
Brad Bishop | 099543e | 2020-11-09 15:37:58 -0500 | [diff] [blame] | 570 | } // namespace process_hostfirmware |
| 571 | } // namespace functions |