1 /*
2 * Copyright (C) 2018 The Android Open Source Project
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 <set>
17
18 #include <android-base/file.h>
19 #include <android-base/parseint.h>
20 #include <android-base/properties.h>
21 #include <android-base/stringprintf.h>
22 #include <android-base/strings.h>
23 #include <android/hidl/manager/1.0/IServiceManager.h>
24 #include <binder/IServiceManager.h>
25 #include <dumputils/dump_utils.h>
26 #include <log/log.h>
27
28 /* list of native processes to include in the native dumps */
29 // This matches the /proc/pid/exe link instead of /proc/pid/cmdline.
30 static const char* native_processes_to_dump[] = {
31 "/system/bin/audioserver",
32 "/system/bin/cameraserver",
33 "/system/bin/drmserver",
34 "/system/bin/mediadrmserver",
35 "/system/bin/mediaextractor", // media.extractor
36 "/system/bin/mediametrics", // media.metrics
37 "/system/bin/mediaserver",
38 "/system/bin/mediatranscoding", // media.transcoding
39 "/system/bin/netd",
40 "/system/bin/sdcard",
41 "/apex/com.android.os.statsd/bin/statsd",
42 "/system/bin/surfaceflinger",
43 "/system/bin/vehicle_network_service",
44 "/vendor/bin/hw/android.hardware.media.omx@1.0-service", // media.codec
45 "/apex/com.android.media.swcodec/bin/mediaswcodec", // media.swcodec
46 NULL,
47 };
48
49
50 // Native processes to dump on debuggable builds.
51 static const char* debuggable_native_processes_to_dump[] = {
52 "/system/bin/keystore2",
53 "/system/bin/vold",
54 NULL,
55 };
56
57 /* list of hidl hal interface to dump containing process during native dumps */
58 static const char* hidl_hal_interfaces_to_dump[] {
59 "android.hardware.audio@4.0::IDevicesFactory",
60 "android.hardware.audio@5.0::IDevicesFactory",
61 "android.hardware.audio@6.0::IDevicesFactory",
62 "android.hardware.audio@7.0::IDevicesFactory",
63 "android.hardware.automotive.audiocontrol@1.0::IAudioControl",
64 "android.hardware.automotive.audiocontrol@2.0::IAudioControl",
65 "android.hardware.automotive.can@1.0::ICanBus",
66 "android.hardware.automotive.can@1.0::ICanController",
67 "android.hardware.automotive.evs@1.0::IEvsCamera",
68 "android.hardware.automotive.sv@1.0::ISurroundViewService",
69 "android.hardware.automotive.vehicle@2.0::IVehicle",
70 "android.hardware.biometrics.face@1.0::IBiometricsFace",
71 "android.hardware.biometrics.fingerprint@2.1::IBiometricsFingerprint",
72 "android.hardware.bluetooth@1.0::IBluetoothHci",
73 "android.hardware.camera.provider@2.4::ICameraProvider",
74 "android.hardware.drm@1.0::IDrmFactory",
75 "android.hardware.graphics.allocator@2.0::IAllocator",
76 "android.hardware.graphics.composer@2.1::IComposer",
77 "android.hardware.health@2.0::IHealth",
78 "android.hardware.media.c2@1.0::IComponentStore",
79 "android.hardware.media.omx@1.0::IOmx",
80 "android.hardware.media.omx@1.0::IOmxStore",
81 "android.hardware.neuralnetworks@1.0::IDevice",
82 "android.hardware.power@1.3::IPower",
83 "android.hardware.power.stats@1.0::IPowerStats",
84 "android.hardware.sensors@1.0::ISensors",
85 "android.hardware.thermal@2.0::IThermal",
86 "android.hardware.vr@1.0::IVr",
87 NULL,
88 };
89
90 /* list of hal interface to dump containing process during native dumps */
91 static const std::vector<std::string> aidl_interfaces_to_dump {
92 "android.hardware.automotive.audiocontrol.IAudioControl",
93 "android.hardware.automotive.can.ICanController",
94 "android.hardware.automotive.evs.IEvsEnumerator",
95 "android.hardware.automotive.ivn.IIvnAndroidDevice",
96 "android.hardware.automotive.occupant_awareness.IOccupantAwareness",
97 "android.hardware.automotive.remoteaccess.IRemoteAccess",
98 "android.hardware.automotive.vehicle.IVehicle",
99 "android.hardware.biometrics.face.IBiometricsFace",
100 "android.hardware.biometrics.fingerprint.IBiometricsFingerprint",
101 "android.hardware.camera.provider.ICameraProvider",
102 "android.hardware.drm.IDrmFactory",
103 "android.hardware.graphics.allocator.IAllocator",
104 "android.hardware.graphics.composer3.IComposer",
105 "android.hardware.health.IHealth",
106 "android.hardware.input.processor.IInputProcessor",
107 "android.hardware.neuralnetworks.IDevice",
108 "android.hardware.power.IPower",
109 "android.hardware.power.stats.IPowerStats",
110 "android.hardware.sensors.ISensors",
111 };
112
113 /* list of extra hal interfaces to dump containing process during native dumps */
114 // This is filled when dumpstate is called.
115 static std::set<const std::string> extra_hal_interfaces_to_dump;
116
read_extra_hals_to_dump_from_property()117 static void read_extra_hals_to_dump_from_property() {
118 // extra hals to dump are already filled
119 if (!extra_hal_interfaces_to_dump.empty()) {
120 return;
121 }
122 std::string value = android::base::GetProperty("ro.dump.hals.extra", "");
123 std::vector<std::string> tokens = android::base::Split(value, ",");
124 for (const auto &token : tokens) {
125 std::string trimmed_token = android::base::Trim(token);
126 if (trimmed_token.length() == 0) {
127 continue;
128 }
129 extra_hal_interfaces_to_dump.insert(trimmed_token);
130 }
131 }
132
133 // check if interface is included in either default hal list or extra hal list
should_dump_hal_interface(const std::string & interface)134 bool should_dump_hal_interface(const std::string& interface) {
135 for (const char** i = hidl_hal_interfaces_to_dump; *i; i++) {
136 if (interface == *i) {
137 return true;
138 }
139 }
140 return extra_hal_interfaces_to_dump.find(interface) != extra_hal_interfaces_to_dump.end();
141 }
142
should_dump_native_traces(const char * path)143 bool should_dump_native_traces(const char* path) {
144 for (const char** p = native_processes_to_dump; *p; p++) {
145 if (!strcmp(*p, path)) {
146 return true;
147 }
148 }
149
150 if (android::base::GetBoolProperty("ro.debuggable", false)) {
151 for (const char** p = debuggable_native_processes_to_dump; *p; p++) {
152 if (!strcmp(*p, path)) {
153 return true;
154 }
155 }
156 }
157
158 return false;
159 }
160
get_interesting_aidl_pids(std::set<int> & pids)161 static void get_interesting_aidl_pids(std::set<int> &pids) {
162 using ServiceDebugInfo = android::IServiceManager::ServiceDebugInfo;
163 auto sm = android::defaultServiceManager();
164 std::vector<ServiceDebugInfo> serviceDebugInfos = sm->getServiceDebugInfo();
165 for (const auto & serviceDebugInfo : serviceDebugInfos) {
166 for (const auto &aidl_prefix : aidl_interfaces_to_dump) {
167 // Check for prefix match with aidl interface to dump
168 if (serviceDebugInfo.name.rfind(aidl_prefix, 0) == 0) {
169 pids.insert(serviceDebugInfo.pid);
170 }
171 }
172 }
173 }
174
get_interesting_hidl_pids(std::set<int> & pids)175 static void get_interesting_hidl_pids(std::set<int> &pids) {
176 using android::hidl::manager::V1_0::IServiceManager;
177 using android::sp;
178 using android::hardware::Return;
179
180 sp<IServiceManager> manager = IServiceManager::getService();
181 read_extra_hals_to_dump_from_property();
182
183 Return<void> ret = manager->debugDump([&](auto& hals) {
184 for (const auto &info : hals) {
185 if (info.pid == static_cast<int>(IServiceManager::PidConstant::NO_PID)) {
186 continue;
187 }
188
189 if (should_dump_hal_interface(info.interfaceName)) {
190 pids.insert(info.pid);
191 }
192 }
193 });
194
195 if (!ret.isOk()) {
196 ALOGE("Could not get list of HAL PIDs: %s\n", ret.description().c_str());
197 }
198
199 return;
200 }
201
get_interesting_pids()202 std::set<int> get_interesting_pids() {
203 std::set<int> interesting_pids;
204 get_interesting_hidl_pids(interesting_pids);
205 get_interesting_aidl_pids(interesting_pids);
206 return interesting_pids;
207 }
208
IsZygote(int pid)209 bool IsZygote(int pid) {
210 std::string cmdline;
211 if (!android::base::ReadFileToString(android::base::StringPrintf("/proc/%d/cmdline", pid),
212 &cmdline)) {
213 return true;
214 }
215
216 // cmdline has embedded nulls; only consider argv[0].
217 cmdline = std::string(cmdline.c_str());
218
219 return cmdline == "zygote" || cmdline == "zygote64" || cmdline == "usap32" ||
220 cmdline == "usap64" || cmdline == "webview_zygote";
221 }
222
IsCached(int pid)223 bool IsCached(int pid) {
224 std::string oom_score_adj;
225 if (!android::base::ReadFileToString(android::base::StringPrintf("/proc/%d/oom_score_adj",
226 pid),
227 &oom_score_adj)) {
228 return false;
229 }
230 int32_t oom_score_adj_value;
231 if (!android::base::ParseInt(android::base::Trim(oom_score_adj), &oom_score_adj_value)) {
232 return false;
233 }
234 // An OOM score greater than 900 indicates a cached process.
235 return oom_score_adj_value >= 900;
236 }
237