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
|
/*
* Copyright (C) 2017 The Android Open Source Project
*
* 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 "BootAction.h"
#define LOG_TAG "BootAction"
#include <android-base/strings.h>
#include <cpu-features.h>
#include <dlfcn.h>
#include <pio/peripheral_manager_client.h>
#include <utils/Log.h>
using android::base::Split;
using android::base::Join;
using android::base::StartsWith;
using android::base::EndsWith;
namespace android {
BootAction::~BootAction() {
if (mLibHandle != nullptr) {
dlclose(mLibHandle);
}
}
bool BootAction::init(const std::string& libraryPath, const std::string& config) {
APeripheralManagerClient* client = nullptr;
ALOGD("Connecting to peripheralmanager");
// Wait for peripheral manager to come up.
while (client == nullptr) {
client = APeripheralManagerClient_new();
if (client == nullptr) {
ALOGV("peripheralmanager is not up, sleeping before we check again.");
usleep(250000);
}
}
ALOGD("Peripheralmanager is up.");
APeripheralManagerClient_delete(client);
std::string path_to_lib = libraryPath;
if (!parseConfig(config, &path_to_lib)) {
return false;
}
ALOGI("Loading boot action %s", path_to_lib.c_str());
mLibHandle = dlopen(path_to_lib.c_str(), RTLD_NOW);
if (mLibHandle == nullptr) {
ALOGE("Unable to load library at %s :: %s",
path_to_lib.c_str(), dlerror());
return false;
}
void* loaded = nullptr;
if (!loadSymbol("boot_action_init", &loaded) || loaded == nullptr) {
return false;
}
mLibInit = reinterpret_cast<libInit>(loaded);
loaded = nullptr;
if (!loadSymbol("boot_action_shutdown", &loaded) || loaded == nullptr) {
return false;
}
mLibShutdown = reinterpret_cast<libShutdown>(loaded);
// StartPart is considered optional, if it isn't exported by the library
// we will still call init and shutdown.
loaded = nullptr;
if (!loadSymbol("boot_action_start_part", &loaded) || loaded == nullptr) {
ALOGI("No boot_action_start_part found, action will not be told when "
"Animation parts change.");
} else {
mLibStartPart = reinterpret_cast<libStartPart>(loaded);
}
ALOGD("Entering boot_action_init");
bool result = mLibInit();
ALOGD("Returned from boot_action_init");
return result;
}
void BootAction::startPart(int partNumber, int playNumber) {
if (mLibStartPart == nullptr) return;
ALOGD("Entering boot_action_start_part");
mLibStartPart(partNumber, playNumber);
ALOGD("Returned from boot_action_start_part");
}
void BootAction::shutdown() {
ALOGD("Entering boot_action_shutdown");
mLibShutdown();
ALOGD("Returned from boot_action_shutdown");
}
bool BootAction::loadSymbol(const char* symbol, void** loaded) {
*loaded = dlsym(mLibHandle, symbol);
if (loaded == nullptr) {
ALOGE("Unable to load symbol : %s :: %s", symbol, dlerror());
return false;
}
return true;
}
bool BootAction::parseConfig(const std::string& config, std::string* path) {
auto lines = Split(config, "\n");
if (lines.size() < 1) {
ALOGE("Config format invalid, expected one line, found %d",
lines.size());
return false;
}
size_t lineNumber = 0;
auto& line1 = lines.at(lineNumber);
while (StartsWith(line1, "#")) {
if (lines.size() < ++lineNumber) {
ALOGE("Config file contains no non-comment lines.");
return false;
}
line1 = lines.at(lineNumber);
}
const std::string libraryNameToken("LIBRARY_NAME=");
if (!StartsWith(line1, libraryNameToken.c_str())) {
ALOGE("Invalid config format, expected second line to start with %s "
"Instead found: %s", libraryNameToken.c_str(), line1.c_str());
return false;
}
std::string libraryName = line1.substr(libraryNameToken.length());
*path += "/";
*path += architectureDirectory();
*path += "/";
*path += libraryName;
return true;
}
const char* BootAction::architectureDirectory() {
switch(android_getCpuFamily()) {
case ANDROID_CPU_FAMILY_ARM:
return "arm";
case ANDROID_CPU_FAMILY_X86:
return "x86";
case ANDROID_CPU_FAMILY_MIPS:
return "mips";
case ANDROID_CPU_FAMILY_ARM64:
return "arm64";
case ANDROID_CPU_FAMILY_X86_64:
return "x86_64";
case ANDROID_CPU_FAMILY_MIPS64:
return "mips64";
default:
ALOGE("Unsupported cpu family: %d", android_getCpuFamily());
return "";
}
}
} // namespace android
|
