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/log.hpp>
18 #include "softoff.hpp"
19 #include "config.h"
20 #include "timer.hpp"
21 
22 int main(int argc, char** argv)
23 {
24     using namespace phosphor::logging;
25 
26     // systemd event handler
27     sd_event* events = nullptr;
28 
29     // Get a handle to system dbus.
30     auto bus = sdbusplus::bus::new_default();
31 
32     // Add systemd object manager.
33     sdbusplus::server::manager::manager(bus, SOFTOFF_OBJPATH);
34 
35     // sd_event object. StateManager wants that this applicatin return '0'
36     // always.
37     auto r = sd_event_default(&events);
38     if (r < 0)
39     {
40         log<level::ERR>("Failure to create sd_event handler",
41                 entry("ERROR=%s", strerror(-r)));
42         return 0;
43     }
44 
45     // Attach the bus to sd_event to service user requests
46     bus.attach_event(events, SD_EVENT_PRIORITY_NORMAL);
47 
48     // Create the SoftPowerOff object.
49     phosphor::ipmi::SoftPowerOff powerObj(bus, events, SOFTOFF_OBJPATH);
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     // Wait for client requests until this application has processed
57     // at least one successful SoftPowerOff or we timed out
58     while(!powerObj.isCompleted() && !powerObj.isTimerExpired())
59     {
60         // -1 denotes wait for ever
61         r = sd_event_run(events, (uint64_t)-1);
62         if (r < 0)
63         {
64             log<level::ERR>("Failure in processing request",
65                     entry("ERROR=%s", strerror(-r)));
66             break;
67         }
68     }
69 
70     // Cleanup the event handler
71     events = sd_event_unref(events);
72 
73     return 0;
74 }
75