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/*
* Copyright (C) 2018 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 <set>
#include <android-base/file.h>
#include <android-base/parseint.h>
#include <android-base/properties.h>
#include <android-base/stringprintf.h>
#include <android-base/strings.h>
#include <android/hidl/manager/1.0/IServiceManager.h>
#include <binder/IServiceManager.h>
#include <dumputils/dump_utils.h>
#include <log/log.h>
/* list of native processes to include in the native dumps */
// This matches the /proc/pid/exe link instead of /proc/pid/cmdline.
static const char* native_processes_to_dump[] = {
"/system/bin/audioserver",
"/system/bin/cameraserver",
"/system/bin/drmserver",
"/system/bin/mediadrmserver",
"/system/bin/mediaextractor", // media.extractor
"/system/bin/mediametrics", // media.metrics
"/system/bin/mediaserver",
"/system/bin/mediatranscoding", // media.transcoding
"/system/bin/netd",
"/system/bin/sdcard",
"/apex/com.android.os.statsd/bin/statsd",
"/system/bin/surfaceflinger",
"/system/bin/vehicle_network_service",
"/vendor/bin/hw/android.hardware.media.omx@1.0-service", // media.codec
"/apex/com.android.media.swcodec/bin/mediaswcodec", // media.swcodec
NULL,
};
// Native processes to dump on debuggable builds.
static const char* debuggable_native_processes_to_dump[] = {
"/system/bin/keystore2",
"/system/bin/vold",
NULL,
};
/* list of hidl hal interface to dump containing process during native dumps */
static const char* hidl_hal_interfaces_to_dump[] {
"android.hardware.audio@4.0::IDevicesFactory",
"android.hardware.audio@5.0::IDevicesFactory",
"android.hardware.audio@6.0::IDevicesFactory",
"android.hardware.audio@7.0::IDevicesFactory",
"android.hardware.automotive.audiocontrol@1.0::IAudioControl",
"android.hardware.automotive.audiocontrol@2.0::IAudioControl",
"android.hardware.automotive.evs@1.0::IEvsCamera",
"android.hardware.automotive.vehicle@2.0::IVehicle",
"android.hardware.biometrics.face@1.0::IBiometricsFace",
"android.hardware.biometrics.fingerprint@2.1::IBiometricsFingerprint",
"android.hardware.bluetooth@1.0::IBluetoothHci",
"android.hardware.camera.provider@2.4::ICameraProvider",
"android.hardware.drm@1.0::IDrmFactory",
"android.hardware.graphics.allocator@2.0::IAllocator",
"android.hardware.graphics.composer@2.1::IComposer",
"android.hardware.health@2.0::IHealth",
"android.hardware.media.c2@1.0::IComponentStore",
"android.hardware.media.omx@1.0::IOmx",
"android.hardware.media.omx@1.0::IOmxStore",
"android.hardware.neuralnetworks@1.0::IDevice",
"android.hardware.power@1.3::IPower",
"android.hardware.power.stats@1.0::IPowerStats",
"android.hardware.sensors@1.0::ISensors",
"android.hardware.thermal@2.0::IThermal",
"android.hardware.vr@1.0::IVr",
NULL,
};
/* list of hal interface to dump containing process during native dumps */
static const std::vector<std::string> aidl_interfaces_to_dump {
"android.hardware.automotive.audiocontrol.IAudioControl",
"android.hardware.automotive.evs.IEvsEnumerator",
"android.hardware.biometrics.face.IBiometricsFace",
"android.hardware.biometrics.fingerprint.IBiometricsFingerprint",
"android.hardware.camera.provider.ICameraProvider",
"android.hardware.drm.IDrmFactory",
"android.hardware.graphics.allocator.IAllocator",
"android.hardware.graphics.composer3.IComposer",
"android.hardware.health.IHealth",
"android.hardware.input.processor.IInputProcessor",
"android.hardware.neuralnetworks.IDevice",
"android.hardware.power.IPower",
"android.hardware.power.stats.IPowerStats",
"android.hardware.sensors.ISensors",
};
/* list of extra hal interfaces to dump containing process during native dumps */
// This is filled when dumpstate is called.
static std::set<const std::string> extra_hal_interfaces_to_dump;
static void read_extra_hals_to_dump_from_property() {
// extra hals to dump are already filled
if (!extra_hal_interfaces_to_dump.empty()) {
return;
}
std::string value = android::base::GetProperty("ro.dump.hals.extra", "");
std::vector<std::string> tokens = android::base::Split(value, ",");
for (const auto &token : tokens) {
std::string trimmed_token = android::base::Trim(token);
if (trimmed_token.length() == 0) {
continue;
}
extra_hal_interfaces_to_dump.insert(trimmed_token);
}
}
// check if interface is included in either default hal list or extra hal list
bool should_dump_hal_interface(const std::string& interface) {
for (const char** i = hidl_hal_interfaces_to_dump; *i; i++) {
if (interface == *i) {
return true;
}
}
return extra_hal_interfaces_to_dump.find(interface) != extra_hal_interfaces_to_dump.end();
}
bool should_dump_native_traces(const char* path) {
for (const char** p = native_processes_to_dump; *p; p++) {
if (!strcmp(*p, path)) {
return true;
}
}
if (android::base::GetBoolProperty("ro.debuggable", false)) {
for (const char** p = debuggable_native_processes_to_dump; *p; p++) {
if (!strcmp(*p, path)) {
return true;
}
}
}
return false;
}
static void get_interesting_aidl_pids(std::set<int> &pids) {
using ServiceDebugInfo = android::IServiceManager::ServiceDebugInfo;
auto sm = android::defaultServiceManager();
std::vector<ServiceDebugInfo> serviceDebugInfos = sm->getServiceDebugInfo();
for (const auto & serviceDebugInfo : serviceDebugInfos) {
for (const auto &aidl_prefix : aidl_interfaces_to_dump) {
// Check for prefix match with aidl interface to dump
if (serviceDebugInfo.name.rfind(aidl_prefix, 0) == 0) {
pids.insert(serviceDebugInfo.pid);
}
}
}
}
static void get_interesting_hidl_pids(std::set<int> &pids) {
using android::hidl::manager::V1_0::IServiceManager;
using android::sp;
using android::hardware::Return;
sp<IServiceManager> manager = IServiceManager::getService();
read_extra_hals_to_dump_from_property();
Return<void> ret = manager->debugDump([&](auto& hals) {
for (const auto &info : hals) {
if (info.pid == static_cast<int>(IServiceManager::PidConstant::NO_PID)) {
continue;
}
if (should_dump_hal_interface(info.interfaceName)) {
pids.insert(info.pid);
}
}
});
if (!ret.isOk()) {
ALOGE("Could not get list of HAL PIDs: %s\n", ret.description().c_str());
}
return;
}
std::set<int> get_interesting_pids() {
std::set<int> interesting_pids;
get_interesting_hidl_pids(interesting_pids);
get_interesting_aidl_pids(interesting_pids);
return interesting_pids;
}
bool IsZygote(int pid) {
std::string cmdline;
if (!android::base::ReadFileToString(android::base::StringPrintf("/proc/%d/cmdline", pid),
&cmdline)) {
return true;
}
// cmdline has embedded nulls; only consider argv[0].
cmdline = std::string(cmdline.c_str());
return cmdline == "zygote" || cmdline == "zygote64" || cmdline == "usap32" ||
cmdline == "usap64" || cmdline == "webview_zygote";
}
bool IsCached(int pid) {
std::string oom_score_adj;
if (!android::base::ReadFileToString(android::base::StringPrintf("/proc/%d/oom_score_adj",
pid),
&oom_score_adj)) {
return false;
}
int32_t oom_score_adj_value;
if (!android::base::ParseInt(android::base::Trim(oom_score_adj), &oom_score_adj_value)) {
return false;
}
// An OOM score greater than 900 indicates a cached process.
return oom_score_adj_value >= 900;
}
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