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/stringprintf.h>
20 #include <android/hidl/manager/1.0/IServiceManager.h>
21 #include <dumputils/dump_utils.h>
22 #include <log/log.h>
23
24 /* list of native processes to include in the native dumps */
25 // This matches the /proc/pid/exe link instead of /proc/pid/cmdline.
26 static const char* native_processes_to_dump[] = {
27 "/system/bin/audioserver",
28 "/system/bin/cameraserver",
29 "/system/bin/drmserver",
30 "/system/bin/mediadrmserver",
31 "/system/bin/mediaextractor", // media.extractor
32 "/system/bin/mediametrics", // media.metrics
33 "/system/bin/mediaserver",
34 "/system/bin/sdcard",
35 "/system/bin/statsd",
36 "/system/bin/surfaceflinger",
37 "/system/bin/vehicle_network_service",
38 "/vendor/bin/hw/android.hardware.media.omx@1.0-service", // media.codec
39 NULL,
40 };
41
42 /* list of hal interface to dump containing process during native dumps */
43 static const char* hal_interfaces_to_dump[] {
44 "android.hardware.audio@2.0::IDevicesFactory",
45 "android.hardware.audio@4.0::IDevicesFactory",
46 "android.hardware.bluetooth@1.0::IBluetoothHci",
47 "android.hardware.camera.provider@2.4::ICameraProvider",
48 "android.hardware.drm@1.0::IDrmFactory",
49 "android.hardware.graphics.composer@2.1::IComposer",
50 "android.hardware.media.omx@1.0::IOmx",
51 "android.hardware.media.omx@1.0::IOmxStore",
52 "android.hardware.sensors@1.0::ISensors",
53 "android.hardware.vr@1.0::IVr",
54 NULL,
55 };
56
should_dump_hal_interface(const char * interface)57 bool should_dump_hal_interface(const char* interface) {
58 for (const char** i = hal_interfaces_to_dump; *i; i++) {
59 if (!strcmp(*i, interface)) {
60 return true;
61 }
62 }
63 return false;
64 }
65
should_dump_native_traces(const char * path)66 bool should_dump_native_traces(const char* path) {
67 for (const char** p = native_processes_to_dump; *p; p++) {
68 if (!strcmp(*p, path)) {
69 return true;
70 }
71 }
72 return false;
73 }
74
get_interesting_hal_pids()75 std::set<int> get_interesting_hal_pids() {
76 using android::hidl::manager::V1_0::IServiceManager;
77 using android::sp;
78 using android::hardware::Return;
79
80 sp<IServiceManager> manager = IServiceManager::getService();
81 std::set<int> pids;
82
83 Return<void> ret = manager->debugDump([&](auto& hals) {
84 for (const auto &info : hals) {
85 if (info.pid == static_cast<int>(IServiceManager::PidConstant::NO_PID)) {
86 continue;
87 }
88
89 if (!should_dump_hal_interface(info.interfaceName.c_str())) {
90 continue;
91 }
92
93 pids.insert(info.pid);
94 }
95 });
96
97 if (!ret.isOk()) {
98 ALOGE("Could not get list of HAL PIDs: %s\n", ret.description().c_str());
99 }
100
101 return pids; // whether it was okay or not
102 }
103
IsZygote(int pid)104 bool IsZygote(int pid) {
105 static const std::string kZygotePrefix = "zygote";
106
107 std::string cmdline;
108 if (!android::base::ReadFileToString(android::base::StringPrintf("/proc/%d/cmdline", pid),
109 &cmdline)) {
110 return true;
111 }
112
113 return (cmdline.find(kZygotePrefix) == 0);
114 }
115