Shawn McCarney | 1df5954 | 2020-09-24 18:43:18 -0500 | [diff] [blame] | 1 | /** |
| 2 | * Copyright © 2020 IBM Corporation |
| 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 "error_logging.hpp" |
| 18 | |
| 19 | #include "exception_utils.hpp" |
| 20 | |
| 21 | #include <errno.h> // for errno |
| 22 | #include <string.h> // for strerror() |
| 23 | #include <sys/types.h> // for getpid(), lseek(), ssize_t |
| 24 | #include <unistd.h> // for getpid(), lseek(), write() |
| 25 | |
| 26 | #include <sdbusplus/message.hpp> |
| 27 | |
| 28 | #include <exception> |
| 29 | #include <ios> |
| 30 | #include <sstream> |
| 31 | #include <stdexcept> |
| 32 | |
| 33 | namespace phosphor::power::regulators |
| 34 | { |
| 35 | |
| 36 | void DBusErrorLogging::logConfigFileError(Entry::Level severity, |
| 37 | Journal& journal) |
| 38 | { |
| 39 | std::map<std::string, std::string> additionalData{}; |
| 40 | logError("xyz.openbmc_project.Power.Regulators.Error.ConfigFile", severity, |
| 41 | additionalData, journal); |
| 42 | } |
| 43 | |
| 44 | void DBusErrorLogging::logDBusError(Entry::Level severity, Journal& journal) |
| 45 | { |
| 46 | std::map<std::string, std::string> additionalData{}; |
| 47 | logError("xyz.openbmc_project.Power.Error.DBus", severity, additionalData, |
| 48 | journal); |
| 49 | } |
| 50 | |
| 51 | void DBusErrorLogging::logI2CError(Entry::Level severity, Journal& journal, |
| 52 | const std::string& bus, uint8_t addr, |
| 53 | int errorNumber) |
| 54 | { |
| 55 | // Convert I2C address to a hex string |
| 56 | std::ostringstream ss; |
| 57 | ss << "0x" << std::hex << std::uppercase << static_cast<uint16_t>(addr); |
| 58 | std::string addrStr = ss.str(); |
| 59 | |
| 60 | // Convert errno value to an integer string |
| 61 | std::string errorNumberStr = std::to_string(errorNumber); |
| 62 | |
| 63 | std::map<std::string, std::string> additionalData{}; |
| 64 | additionalData.emplace("CALLOUT_IIC_BUS", bus); |
| 65 | additionalData.emplace("CALLOUT_IIC_ADDR", addrStr); |
| 66 | additionalData.emplace("CALLOUT_ERRNO", errorNumberStr); |
| 67 | logError("xyz.openbmc_project.Power.Error.I2C", severity, additionalData, |
| 68 | journal); |
| 69 | } |
| 70 | |
| 71 | void DBusErrorLogging::logInternalError(Entry::Level severity, Journal& journal) |
| 72 | { |
| 73 | std::map<std::string, std::string> additionalData{}; |
| 74 | logError("xyz.openbmc_project.Power.Error.Internal", severity, |
| 75 | additionalData, journal); |
| 76 | } |
| 77 | |
| 78 | void DBusErrorLogging::logPMBusError(Entry::Level severity, Journal& journal, |
| 79 | const std::string& inventoryPath) |
| 80 | { |
| 81 | // Convert relative inventory path to an absolute path |
| 82 | std::string absInventoryPath = getAbsoluteInventoryPath(inventoryPath); |
| 83 | |
| 84 | std::map<std::string, std::string> additionalData{}; |
| 85 | additionalData.emplace("CALLOUT_INVENTORY_PATH", absInventoryPath); |
| 86 | logError("xyz.openbmc_project.Power.Error.PMBus", severity, additionalData, |
| 87 | journal); |
| 88 | } |
| 89 | |
| 90 | void DBusErrorLogging::logWriteVerificationError( |
| 91 | Entry::Level severity, Journal& journal, const std::string& inventoryPath) |
| 92 | { |
| 93 | // Convert relative inventory path to an absolute path |
| 94 | std::string absInventoryPath = getAbsoluteInventoryPath(inventoryPath); |
| 95 | |
| 96 | std::map<std::string, std::string> additionalData{}; |
| 97 | additionalData.emplace("CALLOUT_INVENTORY_PATH", absInventoryPath); |
| 98 | logError("xyz.openbmc_project.Power.Regulators.Error.WriteVerification", |
| 99 | severity, additionalData, journal); |
| 100 | } |
| 101 | |
| 102 | FFDCFile DBusErrorLogging::createFFDCFile(const std::vector<std::string>& lines) |
| 103 | { |
| 104 | // Create FFDC file of type Text |
| 105 | FFDCFile file{FFDCFormat::Text}; |
| 106 | int fd = file.getFileDescriptor(); |
| 107 | |
| 108 | // Write lines to file |
| 109 | std::string buffer; |
| 110 | for (const std::string& line : lines) |
| 111 | { |
| 112 | // Copy line to buffer. Add newline if necessary. |
| 113 | buffer = line; |
| 114 | if (line.empty() || (line.back() != '\n')) |
| 115 | { |
| 116 | buffer += '\n'; |
| 117 | } |
| 118 | |
| 119 | // Write buffer to file |
| 120 | const char* bufPtr = buffer.c_str(); |
| 121 | unsigned int count = buffer.size(); |
| 122 | while (count > 0) |
| 123 | { |
| 124 | // Try to write remaining bytes; it might not write all of them |
| 125 | ssize_t bytesWritten = write(fd, bufPtr, count); |
| 126 | if (bytesWritten == -1) |
| 127 | { |
| 128 | throw std::runtime_error{ |
| 129 | std::string{"Unable to write to FFDC file: "} + |
| 130 | strerror(errno)}; |
| 131 | } |
| 132 | bufPtr += bytesWritten; |
| 133 | count -= bytesWritten; |
| 134 | } |
| 135 | } |
| 136 | |
| 137 | // Seek to beginning of file so error logging system can read data |
| 138 | if (lseek(fd, 0, SEEK_SET) != 0) |
| 139 | { |
| 140 | throw std::runtime_error{ |
| 141 | std::string{"Unable to seek within FFDC file: "} + strerror(errno)}; |
| 142 | } |
| 143 | |
| 144 | return file; |
| 145 | } |
| 146 | |
| 147 | std::vector<FFDCFile> DBusErrorLogging::createFFDCFiles(Journal& journal) |
| 148 | { |
| 149 | std::vector<FFDCFile> files{}; |
| 150 | |
| 151 | // Create FFDC files containing journal messages from relevant executables. |
| 152 | // Executables in priority order in case error log cannot hold all the FFDC. |
| 153 | std::vector<std::string> executables{"phosphor-regulators", "systemd"}; |
| 154 | for (const std::string& executable : executables) |
| 155 | { |
| 156 | try |
| 157 | { |
| 158 | // Get recent journal messages from the executable |
Shawn McCarney | 76b7643 | 2020-10-15 18:46:50 -0500 | [diff] [blame^] | 159 | std::vector<std::string> messages = |
| 160 | journal.getMessages("SYSLOG_IDENTIFIER", executable, 30); |
Shawn McCarney | 1df5954 | 2020-09-24 18:43:18 -0500 | [diff] [blame] | 161 | |
| 162 | // Create FFDC file containing the journal messages |
| 163 | if (!messages.empty()) |
| 164 | { |
| 165 | files.emplace_back(createFFDCFile(messages)); |
| 166 | } |
| 167 | } |
| 168 | catch (const std::exception& e) |
| 169 | { |
| 170 | journal.logError(exception_utils::getMessages(e)); |
| 171 | } |
| 172 | } |
| 173 | |
| 174 | return files; |
| 175 | } |
| 176 | |
| 177 | std::vector<FFDCTuple> |
| 178 | DBusErrorLogging::createFFDCTuples(std::vector<FFDCFile>& files) |
| 179 | { |
| 180 | std::vector<FFDCTuple> ffdcTuples{}; |
| 181 | for (FFDCFile& file : files) |
| 182 | { |
| 183 | ffdcTuples.emplace_back( |
| 184 | file.getFormat(), file.getSubType(), file.getVersion(), |
| 185 | sdbusplus::message::unix_fd(file.getFileDescriptor())); |
| 186 | } |
| 187 | return ffdcTuples; |
| 188 | } |
| 189 | |
| 190 | void DBusErrorLogging::logError( |
| 191 | const std::string& message, Entry::Level severity, |
| 192 | std::map<std::string, std::string>& additionalData, Journal& journal) |
| 193 | { |
| 194 | try |
| 195 | { |
| 196 | // Add PID to AdditionalData |
| 197 | additionalData.emplace("_PID", std::to_string(getpid())); |
| 198 | |
| 199 | // Create FFDC files containing debug data to store in error log |
| 200 | std::vector<FFDCFile> files{createFFDCFiles(journal)}; |
| 201 | |
| 202 | // Create FFDC tuples used to pass FFDC files to D-Bus method |
| 203 | std::vector<FFDCTuple> ffdcTuples{createFFDCTuples(files)}; |
| 204 | |
| 205 | // Call D-Bus method to create an error log with FFDC files |
| 206 | const char* service = "xyz.openbmc_project.Logging"; |
| 207 | const char* objPath = "/xyz/openbmc_project/logging"; |
| 208 | const char* interface = "xyz.openbmc_project.Logging.Create"; |
| 209 | const char* method = "CreateWithFFDCFiles"; |
| 210 | auto reqMsg = bus.new_method_call(service, objPath, interface, method); |
| 211 | reqMsg.append(message, severity, additionalData, ffdcTuples); |
| 212 | auto respMsg = bus.call(reqMsg); |
| 213 | |
| 214 | // Remove FFDC files. If an exception occurs before this, the files |
| 215 | // will be deleted by FFDCFile desctructor but errors will be ignored. |
| 216 | removeFFDCFiles(files, journal); |
| 217 | } |
| 218 | catch (const std::exception& e) |
| 219 | { |
| 220 | journal.logError(exception_utils::getMessages(e)); |
| 221 | journal.logError("Unable to log error " + message); |
| 222 | } |
| 223 | } |
| 224 | |
| 225 | void DBusErrorLogging::removeFFDCFiles(std::vector<FFDCFile>& files, |
| 226 | Journal& journal) |
| 227 | { |
| 228 | // Explicitly remove FFDC files rather than relying on FFDCFile destructor. |
| 229 | // This allows any resulting errors to be written to the journal. |
| 230 | for (FFDCFile& file : files) |
| 231 | { |
| 232 | try |
| 233 | { |
| 234 | file.remove(); |
| 235 | } |
| 236 | catch (const std::exception& e) |
| 237 | { |
| 238 | journal.logError(exception_utils::getMessages(e)); |
| 239 | } |
| 240 | } |
| 241 | |
| 242 | // Clear vector since the FFDCFile objects can no longer be used |
| 243 | files.clear(); |
| 244 | } |
| 245 | |
| 246 | } // namespace phosphor::power::regulators |