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