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
|
/**
* Copyright © 2016 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 "config.h"
#include "argument.hpp"
#include "physical.hpp"
#include "sysfs.hpp"
#include <algorithm>
#include <iostream>
#include <string>
static void ExitWithError(const char* err, char** argv)
{
phosphor::led::ArgumentParser::usage(argv);
std::cerr << std::endl;
std::cerr << "ERROR: " << err << std::endl;
exit(-1);
}
int main(int argc, char** argv)
{
namespace fs = std::experimental::filesystem;
// Read arguments.
auto options = phosphor::led::ArgumentParser(argc, argv);
// Parse out Path argument.
auto path = std::move((options)["path"]);
if (path == phosphor::led::ArgumentParser::empty_string)
{
ExitWithError("Path not specified.", argv);
}
// If the LED has a hyphen in the name like: "one-two", then it gets passed
// as /one/two/ as opposed to /one-two to the service file. There is a
// change needed in systemd to solve this issue and hence putting in this
// work-around.
// Since this application always gets invoked as part of a udev rule,
// it is always guaranteed to get /sys/class/leds/one/two
// and we can go beyond leds/ to get the actual led name.
// Refer: systemd/systemd#5072
// On an error, this throws an exception and terminates.
auto name = path.substr(strlen(DEVPATH));
// LED names may have a hyphen and that would be an issue for
// dbus paths and hence need to convert them to underscores.
std::replace(name.begin(), name.end(), '/', '-');
path = DEVPATH + name;
// Convert to lowercase just in case some are not and that
// we follow lowercase all over
std::transform(name.begin(), name.end(), name.begin(), ::tolower);
// LED names may have a hyphen and that would be an issue for
// dbus paths and hence need to convert them to underscores.
std::replace(name.begin(), name.end(), '-', '_');
// Unique bus name representing a single LED.
auto busName = std::string(BUSNAME) + '.' + name;
auto objPath = std::string(OBJPATH) + '/' + name;
// Get a handle to system dbus.
auto bus = sdbusplus::bus::new_default();
// Add systemd object manager.
sdbusplus::server::manager::manager(bus, objPath.c_str());
// Create the Physical LED objects for directing actions.
// Need to save this else sdbusplus destructor will wipe this off.
phosphor::led::SysfsLed sled{fs::path(path)};
phosphor::led::Physical led(bus, objPath, sled);
/** @brief Claim the bus */
bus.request_name(busName.c_str());
/** @brief Wait for client requests */
while (true)
{
// Handle dbus message / signals discarding unhandled
bus.process_discard();
bus.wait();
}
return 0;
}
|
