1 /**
2  * Copyright © 2016 IBM Corporation
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 #include <systemd/sd-event.h>
17 #include <phosphor-logging/elog.hpp>
18 #include <phosphor-logging/elog-errors.hpp>
19 #include <xyz/openbmc_project/State/Host/error.hpp>
20 #include "softoff.hpp"
21 #include "config.h"
22 #include "timer.hpp"
23 
24 // Return -1 on any errors to ensure we follow the calling targets OnFailure=
25 // path
26 int main(int argc, char** argv)
27 {
28     using namespace phosphor::logging;
29 
30     // systemd event handler
31     sd_event* events = nullptr;
32 
33     // Get a handle to system dbus.
34     auto bus = sdbusplus::bus::new_default();
35 
36     // Add systemd object manager.
37     sdbusplus::server::manager::manager(bus, SOFTOFF_OBJPATH);
38 
39     // sd_event object
40     auto r = sd_event_default(&events);
41     if (r < 0)
42     {
43         log<level::ERR>("Failure to create sd_event handler",
44                 entry("ERROR=%s", strerror(-r)));
45         return -1;
46     }
47 
48     // Attach the bus to sd_event to service user requests
49     bus.attach_event(events, SD_EVENT_PRIORITY_NORMAL);
50 
51     // Claim the bus. Delaying it until sending SMS_ATN may result
52     // in a race condition between this available and IPMI trying to send
53     // message as a reponse to ack from host.
54     bus.request_name(SOFTOFF_BUSNAME);
55 
56     // Create the SoftPowerOff object.
57     phosphor::ipmi::SoftPowerOff powerObj(bus, events, SOFTOFF_OBJPATH);
58 
59     // Wait for client requests until this application has processed
60     // at least one successful SoftPowerOff or we timed out
61     while(!powerObj.isCompleted() && !powerObj.isTimerExpired())
62     {
63         // -1 denotes wait for ever
64         r = sd_event_run(events, (uint64_t)-1);
65         if (r < 0)
66         {
67             log<level::ERR>("Failure in processing request",
68                     entry("ERROR=%s", strerror(-r)));
69             return -1;
70         }
71     }
72 
73     // Log an error if we timed out after getting Ack for SMS_ATN and before
74     // getting the Host Shutdown response
75     if(powerObj.isTimerExpired() && (powerObj.responseReceived() ==
76             phosphor::ipmi::Base::SoftPowerOff::HostResponse::SoftOffReceived))
77     {
78         using error =
79             sdbusplus::xyz::openbmc_project::State::Host::Error::SoftOffTimeout;
80         using errorMetadata = xyz::openbmc_project::State::Host::SoftOffTimeout;
81         report<error>(prev_entry<errorMetadata::TIMEOUT_IN_MSEC>());
82         return -1;
83     }
84 
85     // Cleanup the event handler
86     events = sd_event_unref(events);
87 
88     return 0;
89 }
90