Patrick Venture | f085d91 | 2019-03-15 08:50:00 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2019 Google Inc. |
| 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 "handler.hpp" |
| 18 | |
Patrick Venture | d2037c6 | 2019-03-15 10:29:47 -0700 | [diff] [blame] | 19 | #include "errors.hpp" |
| 20 | |
| 21 | #include <ipmid/api.h> |
| 22 | |
Patrick Venture | bb90d4f | 2019-03-15 13:42:06 -0700 | [diff] [blame] | 23 | #include <cinttypes> |
Patrick Venture | d2037c6 | 2019-03-15 10:29:47 -0700 | [diff] [blame] | 24 | #include <cstdio> |
| 25 | #include <filesystem> |
| 26 | #include <fstream> |
Patrick Venture | aa37412 | 2019-03-15 15:09:10 -0700 | [diff] [blame^] | 27 | #include <phosphor-logging/log.hpp> |
| 28 | #include <sdbusplus/bus.hpp> |
Patrick Venture | d2037c6 | 2019-03-15 10:29:47 -0700 | [diff] [blame] | 29 | #include <sstream> |
| 30 | #include <string> |
| 31 | #include <tuple> |
| 32 | |
Patrick Venture | f085d91 | 2019-03-15 08:50:00 -0700 | [diff] [blame] | 33 | // The phosphor-host-ipmi daemon requires a configuration that maps |
| 34 | // the if_name to the IPMI LAN channel. However, that doesn't strictly |
| 35 | // define which is meant to be used for NCSI. |
| 36 | #ifndef NCSI_IPMI_CHANNEL |
| 37 | #define NCSI_IPMI_CHANNEL 1 |
| 38 | #endif |
| 39 | |
| 40 | #ifndef NCSI_IF_NAME |
| 41 | #define NCSI_IF_NAME eth0 |
| 42 | #endif |
| 43 | |
| 44 | // To deal with receiving a string without quotes. |
| 45 | #define QUOTE(name) #name |
| 46 | #define STR(macro) QUOTE(macro) |
| 47 | #define NCSI_IF_NAME_STR STR(NCSI_IF_NAME) |
| 48 | |
| 49 | namespace google |
| 50 | { |
| 51 | namespace ipmi |
| 52 | { |
Patrick Venture | d2037c6 | 2019-03-15 10:29:47 -0700 | [diff] [blame] | 53 | namespace fs = std::filesystem; |
Patrick Venture | f085d91 | 2019-03-15 08:50:00 -0700 | [diff] [blame] | 54 | |
| 55 | std::tuple<std::uint8_t, std::string> Handler::getEthDetails() const |
| 56 | { |
| 57 | return std::make_tuple(NCSI_IPMI_CHANNEL, NCSI_IF_NAME_STR); |
| 58 | } |
| 59 | |
Patrick Venture | d2037c6 | 2019-03-15 10:29:47 -0700 | [diff] [blame] | 60 | std::int64_t Handler::getRxPackets(const std::string& name) const |
| 61 | { |
| 62 | std::ostringstream opath; |
| 63 | opath << "/sys/class/net/" << name << "/statistics/rx_packets"; |
| 64 | std::string path = opath.str(); |
| 65 | |
| 66 | // Minor sanity & security check (of course, I'm less certain if unicode |
| 67 | // comes into play here. |
| 68 | // |
| 69 | // Basically you can't easily inject ../ or /../ into the path below. |
| 70 | if (name.find("/") != std::string::npos) |
| 71 | { |
| 72 | std::fprintf(stderr, "Invalid or illegal name: '%s'\n", name.c_str()); |
| 73 | throw IpmiException(IPMI_CC_INVALID_FIELD_REQUEST); |
| 74 | } |
| 75 | |
| 76 | std::error_code ec; |
| 77 | if (!fs::exists(path, ec)) |
| 78 | { |
| 79 | std::fprintf(stderr, "Path: '%s' doesn't exist.\n", path.c_str()); |
| 80 | throw IpmiException(IPMI_CC_INVALID_FIELD_REQUEST); |
| 81 | } |
| 82 | // We're uninterested in the state of ec. |
| 83 | |
| 84 | int64_t count = 0; |
| 85 | std::ifstream ifs; |
| 86 | ifs.exceptions(std::ifstream::failbit); |
| 87 | try |
| 88 | { |
| 89 | ifs.open(path); |
| 90 | ifs >> count; |
| 91 | } |
| 92 | catch (std::ios_base::failure& fail) |
| 93 | { |
| 94 | throw IpmiException(IPMI_CC_UNSPECIFIED_ERROR); |
| 95 | } |
| 96 | |
| 97 | return count; |
| 98 | } |
| 99 | |
Patrick Venture | bb90d4f | 2019-03-15 13:42:06 -0700 | [diff] [blame] | 100 | VersionTuple Handler::getCpldVersion(unsigned int id) const |
| 101 | { |
| 102 | std::ostringstream opath; |
| 103 | opath << "/run/cpld" << id << ".version"; |
| 104 | // Check for file |
| 105 | |
| 106 | std::error_code ec; |
| 107 | if (!fs::exists(opath.str(), ec)) |
| 108 | { |
| 109 | std::fprintf(stderr, "Path: '%s' doesn't exist.\n", |
| 110 | opath.str().c_str()); |
| 111 | throw IpmiException(IPMI_CC_INVALID_FIELD_REQUEST); |
| 112 | } |
| 113 | // We're uninterested in the state of ec. |
| 114 | |
| 115 | // If file exists, read. |
| 116 | std::ifstream ifs; |
| 117 | ifs.exceptions(std::ifstream::failbit); |
| 118 | std::string value; |
| 119 | try |
| 120 | { |
| 121 | ifs.open(opath.str()); |
| 122 | ifs >> value; |
| 123 | } |
| 124 | catch (std::ios_base::failure& fail) |
| 125 | { |
| 126 | throw IpmiException(IPMI_CC_UNSPECIFIED_ERROR); |
| 127 | } |
| 128 | |
| 129 | // If value parses as expected, return version. |
| 130 | VersionTuple version = std::make_tuple(0, 0, 0, 0); |
| 131 | |
| 132 | int num_fields = |
| 133 | std::sscanf(value.c_str(), "%" SCNu8 ".%" SCNu8 ".%" SCNu8 ".%" SCNu8, |
| 134 | &std::get<0>(version), &std::get<1>(version), |
| 135 | &std::get<2>(version), &std::get<3>(version)); |
| 136 | if (num_fields == 0) |
| 137 | { |
| 138 | std::fprintf(stderr, "Invalid version.\n"); |
| 139 | throw IpmiException(IPMI_CC_UNSPECIFIED_ERROR); |
| 140 | } |
| 141 | |
| 142 | return version; |
| 143 | } |
| 144 | |
Patrick Venture | aa37412 | 2019-03-15 15:09:10 -0700 | [diff] [blame^] | 145 | static constexpr auto TIME_DELAY_FILENAME = "/run/psu_timedelay"; |
| 146 | static constexpr auto SYSTEMD_SERVICE = "org.freedesktop.systemd1"; |
| 147 | static constexpr auto SYSTEMD_ROOT = "/org/freedesktop/systemd1"; |
| 148 | static constexpr auto SYSTEMD_INTERFACE = "org.freedesktop.systemd1.Manager"; |
| 149 | static constexpr auto PSU_HARDRESET_TARGET = "gbmc-psu-hardreset.target"; |
| 150 | |
| 151 | void Handler::psuResetDelay(std::uint32_t delay) const |
| 152 | { |
| 153 | using namespace phosphor::logging; |
| 154 | |
| 155 | std::ofstream ofs; |
| 156 | ofs.open(TIME_DELAY_FILENAME, std::ofstream::out); |
| 157 | if (!ofs.good()) |
| 158 | { |
| 159 | std::fprintf(stderr, "Unable to open file for output.\n"); |
| 160 | throw IpmiException(IPMI_CC_UNSPECIFIED_ERROR); |
| 161 | } |
| 162 | |
| 163 | ofs << "PSU_HARDRESET_DELAY=" << delay << std::endl; |
| 164 | if (ofs.fail()) |
| 165 | { |
| 166 | std::fprintf(stderr, "Write failed\n"); |
| 167 | ofs.close(); |
| 168 | throw IpmiException(IPMI_CC_UNSPECIFIED_ERROR); |
| 169 | } |
| 170 | |
| 171 | // Write succeeded, please continue. |
| 172 | ofs.flush(); |
| 173 | ofs.close(); |
| 174 | |
| 175 | auto bus = sdbusplus::bus::new_default(); |
| 176 | auto method = bus.new_method_call(SYSTEMD_SERVICE, SYSTEMD_ROOT, |
| 177 | SYSTEMD_INTERFACE, "StartUnit"); |
| 178 | |
| 179 | method.append(PSU_HARDRESET_TARGET); |
| 180 | method.append("replace"); |
| 181 | |
| 182 | try |
| 183 | { |
| 184 | bus.call_noreply(method); |
| 185 | } |
| 186 | catch (const sdbusplus::exception::SdBusError& ex) |
| 187 | { |
| 188 | log<level::ERR>("Failed to call PSU hard reset"); |
| 189 | throw IpmiException(IPMI_CC_UNSPECIFIED_ERROR); |
| 190 | } |
| 191 | } |
| 192 | |
Patrick Venture | f085d91 | 2019-03-15 08:50:00 -0700 | [diff] [blame] | 193 | Handler handlerImpl; |
| 194 | |
| 195 | } // namespace ipmi |
| 196 | } // namespace google |