1 #include <ext_interface.hpp> 2 #include <phosphor-logging/log.hpp> 3 #include <sdbusplus/server.hpp> 4 #include <string> 5 6 // Mapper 7 constexpr auto MAPPER_BUSNAME = "xyz.openbmc_project.ObjectMapper"; 8 constexpr auto MAPPER_PATH = "/xyz/openbmc_project/object_mapper"; 9 constexpr auto MAPPER_INTERFACE = "xyz.openbmc_project.ObjectMapper"; 10 11 // Reboot count 12 constexpr auto REBOOTCOUNTER_PATH("/xyz/openbmc_project/state/host0"); 13 constexpr auto 14 REBOOTCOUNTER_INTERFACE("xyz.openbmc_project.Control.Boot.RebootAttempts"); 15 16 using namespace phosphor::logging; 17 18 /** 19 * @brief Get DBUS service for input interface via mapper call 20 * 21 * This is an internal function to be used only by functions within this 22 * file. 23 * 24 * @param[in] bus - DBUS Bus Object 25 * @param[in] intf - DBUS Interface 26 * @param[in] path - DBUS Object Path 27 * 28 * @return distinct dbus name for input interface/path 29 **/ 30 std::string getService(sdbusplus::bus::bus& bus, const std::string& intf, 31 const std::string& path) 32 { 33 34 auto mapper = bus.new_method_call(MAPPER_BUSNAME, MAPPER_PATH, 35 MAPPER_INTERFACE, "GetObject"); 36 37 mapper.append(path); 38 mapper.append(std::vector<std::string>({intf})); 39 40 auto mapperResponseMsg = bus.call(mapper); 41 42 if (mapperResponseMsg.is_method_error()) 43 { 44 // TODO openbmc/openbmc#851 - Once available, throw returned error 45 throw std::runtime_error("ERROR in mapper call"); 46 } 47 48 std::map<std::string, std::vector<std::string>> mapperResponse; 49 mapperResponseMsg.read(mapperResponse); 50 51 if (mapperResponse.empty()) 52 { 53 // TODO openbmc/openbmc#1712 - Handle empty mapper resp. consistently 54 throw std::runtime_error("ERROR in reading the mapper response"); 55 } 56 57 return mapperResponse.begin()->first; 58 } 59 60 uint32_t getBootCount() 61 { 62 auto bus = sdbusplus::bus::new_default(); 63 64 auto rebootSvc = 65 getService(bus, REBOOTCOUNTER_INTERFACE, REBOOTCOUNTER_PATH); 66 67 auto method = bus.new_method_call(rebootSvc.c_str(), REBOOTCOUNTER_PATH, 68 "org.freedesktop.DBus.Properties", "Get"); 69 70 method.append(REBOOTCOUNTER_INTERFACE, "AttemptsLeft"); 71 auto reply = bus.call(method); 72 if (reply.is_method_error()) 73 { 74 log<level::ERR>("Error in BOOTCOUNT getValue"); 75 // TODO openbmc/openbmc#851 - Once available, throw returned error 76 throw std::runtime_error("ERROR in reading BOOTCOUNT"); 77 } 78 sdbusplus::message::variant<uint32_t> rebootCount; 79 reply.read(rebootCount); 80 81 return sdbusplus::message::variant_ns::get<uint32_t>(rebootCount); 82 } 83