Creating dumputils library.
This moves methods and variables needed for stack trace dumps to a
separate library so that incidentd can also get dumps without
duplicating too much code.
Bug: 72177715
Test: flash device and collect a regular bug report
Change-Id: I68f367c32cbcac99f43305f73bb504ba7a1e4437
diff --git a/libs/dumputils/dump_utils.cpp b/libs/dumputils/dump_utils.cpp
new file mode 100644
index 0000000..0fd2b81
--- /dev/null
+++ b/libs/dumputils/dump_utils.cpp
@@ -0,0 +1,111 @@
+/*
+ * 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/stringprintf.h>
+#include <android/hidl/manager/1.0/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/sdcard",
+ "/system/bin/statsd",
+ "/system/bin/surfaceflinger",
+ "/system/bin/vehicle_network_service",
+ "/vendor/bin/hw/android.hardware.media.omx@1.0-service", // media.codec
+ NULL,
+};
+
+/* list of hal interface to dump containing process during native dumps */
+static const char* hal_interfaces_to_dump[] {
+ "android.hardware.audio@2.0::IDevicesFactory",
+ "android.hardware.bluetooth@1.0::IBluetoothHci",
+ "android.hardware.camera.provider@2.4::ICameraProvider",
+ "android.hardware.graphics.composer@2.1::IComposer",
+ "android.hardware.media.omx@1.0::IOmx",
+ "android.hardware.sensors@1.0::ISensors",
+ "android.hardware.vr@1.0::IVr",
+ NULL,
+};
+
+bool should_dump_hal_interface(const char* interface) {
+ for (const char** i = hal_interfaces_to_dump; *i; i++) {
+ if (!strcmp(*i, interface)) {
+ return true;
+ }
+ }
+ return false;
+}
+
+bool should_dump_native_traces(const char* path) {
+ for (const char** p = native_processes_to_dump; *p; p++) {
+ if (!strcmp(*p, path)) {
+ return true;
+ }
+ }
+ return false;
+}
+
+std::set<int> get_interesting_hal_pids() {
+ using android::hidl::manager::V1_0::IServiceManager;
+ using android::sp;
+ using android::hardware::Return;
+
+ sp<IServiceManager> manager = IServiceManager::getService();
+ std::set<int> pids;
+
+ 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.c_str())) {
+ continue;
+ }
+
+ pids.insert(info.pid);
+ }
+ });
+
+ if (!ret.isOk()) {
+ ALOGE("Could not get list of HAL PIDs: %s\n", ret.description().c_str());
+ }
+
+ return pids; // whether it was okay or not
+}
+
+bool IsZygote(int pid) {
+ static const std::string kZygotePrefix = "zygote";
+
+ std::string cmdline;
+ if (!android::base::ReadFileToString(android::base::StringPrintf("/proc/%d/cmdline", pid),
+ &cmdline)) {
+ return true;
+ }
+
+ return (cmdline.find(kZygotePrefix) == 0);
+}