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