1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
|
/**
* Copyright © 2017 IBM Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <iostream>
#include <phosphor-logging/log.hpp>
#include <phosphor-logging/elog.hpp>
#include <phosphor-logging/elog-errors.hpp>
#include <string>
#include <xyz/openbmc_project/Common/error.hpp>
#include "argument.hpp"
#include "watchdog.hpp"
using phosphor::watchdog::ArgumentParser;
using phosphor::watchdog::Watchdog;
using sdbusplus::xyz::openbmc_project::State::server::convertForMessage;
static void exitWithError(const char* err, char** argv)
{
ArgumentParser::usage(argv);
std::cerr << "ERROR: " << err << "\n";
exit(EXIT_FAILURE);
}
void printActionTargets(
const std::map<Watchdog::Action, std::string>& actionTargets)
{
std::cerr << "Action Targets:\n";
for (const auto& actionTarget : actionTargets)
{
std::cerr << " " << convertForMessage(actionTarget.first) << " -> " <<
actionTarget.second << "\n";
}
std::cerr << std::flush;
}
int main(int argc, char** argv)
{
using namespace phosphor::logging;
using InternalFailure = sdbusplus::xyz::openbmc_project::Common::
Error::InternalFailure;
// Read arguments.
auto options = ArgumentParser(argc, argv);
// Parse out continue argument.
auto continueParam = (options)["continue"];
// Default it to exit on watchdog timeout
auto continueAfterTimeout = false;
if (!continueParam.empty())
{
continueAfterTimeout = true;
}
// Parse out path argument.
auto pathParam = (options)["path"];
if (pathParam.empty())
{
exitWithError("Path not specified.", argv);
}
if (pathParam.size() > 1)
{
exitWithError("Multiple paths specified.", argv);
}
auto path = pathParam.back();
// Parse out service name argument
auto serviceParam = (options)["service"];
if (serviceParam.empty())
{
exitWithError("Service not specified.", argv);
}
if (serviceParam.size() > 1)
{
exitWithError("Multiple services specified.", argv);
}
auto service = serviceParam.back();
// Parse out target argument. It is fine if the caller does not
// pass this if they are not interested in calling into any target
// on meeting a condition.
auto targetParam = (options)["target"];
if (targetParam.size() > 1)
{
exitWithError("Multiple targets specified.", argv);
}
std::map<Watchdog::Action, Watchdog::TargetName> actionTargets;
if (!targetParam.empty()) {
auto target = targetParam.back();
actionTargets[Watchdog::Action::HardReset] = target;
actionTargets[Watchdog::Action::PowerOff] = target;
actionTargets[Watchdog::Action::PowerCycle] = target;
}
// Parse out the action_target arguments. We allow one target to map
// to an action. These targets can replace the target specified above.
for (const auto& actionTarget : (options)["action_target"])
{
size_t keyValueSplit = actionTarget.find("=");
if (keyValueSplit == std::string::npos)
{
exitWithError(
"Invalid action_target format, expect <action>=<target>.",
argv);
}
std::string key = actionTarget.substr(0, keyValueSplit);
std::string value = actionTarget.substr(keyValueSplit+1);
// Convert an action from a fully namespaced value
Watchdog::Action action;
try
{
action = Watchdog::convertActionFromString(key);
}
catch (const sdbusplus::exception::InvalidEnumString &)
{
exitWithError("Bad action specified.", argv);
}
actionTargets[action] = std::move(value);
}
printActionTargets(actionTargets);
sd_event* event = nullptr;
auto r = sd_event_default(&event);
if (r < 0)
{
log<level::ERR>("Error creating a default sd_event handler");
return r;
}
phosphor::watchdog::EventPtr eventP{event};
event = nullptr;
// Get a handle to system dbus.
auto bus = sdbusplus::bus::new_default();
// Add systemd object manager.
sdbusplus::server::manager::manager(bus, path.c_str());
// Attach the bus to sd_event to service user requests
bus.attach_event(eventP.get(), SD_EVENT_PRIORITY_NORMAL);
try
{
// Create a watchdog object
Watchdog watchdog(bus, path.c_str(), eventP, std::move(actionTargets));
// Claim the bus
bus.request_name(service.c_str());
// Loop forever processing events
while (true)
{
// -1 denotes wait for ever
r = sd_event_run(eventP.get(), (uint64_t)-1);
if (r < 0)
{
log<level::ERR>("Error waiting for events");
elog<InternalFailure>();
}
// The timer expiring is an event that breaks from the above.
if (watchdog.timerExpired())
{
// Either disable the timer or exit.
if (continueAfterTimeout)
{
// The watchdog will be disabled but left running to be
// re-enabled.
watchdog.enabled(false);
}
else
{
// The watchdog daemon will now exit.
break;
}
}
}
}
catch(InternalFailure& e)
{
phosphor::logging::commit<InternalFailure>();
// Need a coredump in the error cases.
std::terminate();
}
return 0;
}
|
