1 #include "occ_presence.hpp"
2 
3 #include "occ_manager.hpp"
4 
5 #include <errno.h>
6 #include <fcntl.h>
7 #include <sys/ioctl.h>
8 #include <unistd.h>
9 
10 #include <org/open_power/OCC/Device/error.hpp>
11 #include <phosphor-logging/elog-errors.hpp>
12 #include <phosphor-logging/elog.hpp>
13 #include <phosphor-logging/log.hpp>
14 #include <xyz/openbmc_project/Common/error.hpp>
15 
16 namespace open_power
17 {
18 namespace occ
19 {
20 
21 // Reads the occs_present file and analyzes the data
22 void Presence::analyzeEvent()
23 {
24     using namespace phosphor::logging;
25     using namespace sdbusplus::org::open_power::OCC::Device::Error;
26 
27     // Get the number of bytes to read
28     int len = -1;
29     auto r = ioctl(fd, FIONREAD, &len);
30     if (r < 0)
31     {
32         elog<ConfigFailure>(
33             phosphor::logging::org::open_power::OCC::Device::ConfigFailure::
34                 CALLOUT_ERRNO(errno),
35             phosphor::logging::org::open_power::OCC::Device::ConfigFailure::
36                 CALLOUT_DEVICE_PATH(file.c_str()));
37     }
38 
39     auto data = readFile(len);
40     if (data.empty())
41     {
42         return;
43     }
44 
45     // Let stoi determine the base
46     auto occsPresent = std::stoi(data, nullptr, 0);
47     if (manager.getNumOCCs() != occsPresent)
48     {
49         log<level::ERR>(fmt::format("OCC presence mismatch - BMC: {}, OCC: {}",
50                                     manager.getNumOCCs(), occsPresent)
51                             .c_str());
52         if (callBack)
53         {
54             callBack(occsPresent);
55         }
56     }
57 }
58 
59 } // namespace occ
60 } // namespace open_power
61