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/*
* Copyright (C) 2024 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 "src/trace_redaction/populate_allow_lists.h"
#include "perfetto/base/status.h"
#include "src/trace_redaction/trace_redaction_framework.h"
#include "protos/perfetto/trace/ftrace/ftrace_event.pbzero.h"
#include "protos/perfetto/trace/trace_packet.pbzero.h"
namespace perfetto::trace_redaction {
base::Status PopulateAllowlists::Build(Context* context) const {
// These fields are top-level fields that outside the "oneof data" field.
std::initializer_list<uint32_t> required_trace_fields = {
protos::pbzero::TracePacket::kTimestampFieldNumber,
protos::pbzero::TracePacket::kTimestampClockIdFieldNumber,
protos::pbzero::TracePacket::kTrustedUidFieldNumber,
protos::pbzero::TracePacket::kTrustedPacketSequenceIdFieldNumber,
protos::pbzero::TracePacket::kTrustedPidFieldNumber,
protos::pbzero::TracePacket::kInternedDataFieldNumber,
protos::pbzero::TracePacket::kSequenceFlagsFieldNumber,
// DEPRECATED. Moved to SequenceFlags::SEQ_INCREMENTAL_STATE_CLEARED. So
// there is no reason to include it.
//
// protos::pbzero::TracePacket::incremental_state_cleared
protos::pbzero::TracePacket::kTracePacketDefaultsFieldNumber,
protos::pbzero::TracePacket::kPreviousPacketDroppedFieldNumber,
protos::pbzero::TracePacket::kFirstPacketOnSequenceFieldNumber,
protos::pbzero::TracePacket::kMachineIdFieldNumber,
};
for (auto item : required_trace_fields) {
context->trace_packet_allow_list.insert(item);
}
// TRACE PACKET NOTES
//
// protos::pbzero::TracePacket::kAndroidSystemPropertyFieldNumber
//
// AndroidSystemProperty exposes a key-value pair structure with no
// constraints around keys or values, making fine-grain redaction
// difficult. Because this packet's value has no measurable, the safest
// option to drop the whole packet.
std::initializer_list<uint32_t> trace_packets = {
protos::pbzero::TracePacket::kProcessTreeFieldNumber,
protos::pbzero::TracePacket::kProcessStatsFieldNumber,
protos::pbzero::TracePacket::kClockSnapshotFieldNumber,
protos::pbzero::TracePacket::kSysStatsFieldNumber,
protos::pbzero::TracePacket::kTraceConfigFieldNumber,
protos::pbzero::TracePacket::kTraceStatsFieldNumber,
protos::pbzero::TracePacket::kSystemInfoFieldNumber,
protos::pbzero::TracePacket::kTriggerFieldNumber,
protos::pbzero::TracePacket::kCpuInfoFieldNumber,
protos::pbzero::TracePacket::kServiceEventFieldNumber,
protos::pbzero::TracePacket::kInitialDisplayStateFieldNumber,
protos::pbzero::TracePacket::kFrameTimelineEventFieldNumber,
protos::pbzero::TracePacket::kSynchronizationMarkerFieldNumber,
protos::pbzero::TracePacket::kFtraceEventsFieldNumber,
// Keep the package list. There are some metrics and stdlib queries that
// depend on the package list.
protos::pbzero::TracePacket::kPackagesListFieldNumber,
};
for (auto item : trace_packets) {
context->trace_packet_allow_list.insert(item);
}
std::initializer_list<uint32_t> ftrace_events = {
protos::pbzero::FtraceEvent::kSchedSwitchFieldNumber,
protos::pbzero::FtraceEvent::kCpuFrequencyFieldNumber,
protos::pbzero::FtraceEvent::kCpuIdleFieldNumber,
protos::pbzero::FtraceEvent::kSchedBlockedReasonFieldNumber,
protos::pbzero::FtraceEvent::kSchedWakingFieldNumber,
protos::pbzero::FtraceEvent::kTaskNewtaskFieldNumber,
protos::pbzero::FtraceEvent::kTaskRenameFieldNumber,
protos::pbzero::FtraceEvent::kSchedProcessFreeFieldNumber,
protos::pbzero::FtraceEvent::kRssStatFieldNumber,
protos::pbzero::FtraceEvent::kIonHeapShrinkFieldNumber,
protos::pbzero::FtraceEvent::kIonHeapGrowFieldNumber,
protos::pbzero::FtraceEvent::kIonStatFieldNumber,
protos::pbzero::FtraceEvent::kIonBufferCreateFieldNumber,
protos::pbzero::FtraceEvent::kIonBufferDestroyFieldNumber,
protos::pbzero::FtraceEvent::kDmaHeapStatFieldNumber,
protos::pbzero::FtraceEvent::kRssStatThrottledFieldNumber,
protos::pbzero::FtraceEvent::kPrintFieldNumber,
};
for (auto item : ftrace_events) {
context->ftrace_packet_allow_list.insert(item);
}
return base::OkStatus();
}
} // namespace perfetto::trace_redaction
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