1 /* 2 * Copyright (C) 2024 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 17 #include <cstdint> 18 19 #include "protos/perfetto/trace/ftrace/ftrace_event_bundle.pbzero.h" 20 #include "src/trace_redaction/trace_redaction_framework.h" 21 22 #ifndef SRC_TRACE_REDACTION_MODIFY_H_ 23 #define SRC_TRACE_REDACTION_MODIFY_H_ 24 25 namespace perfetto::trace_redaction { 26 27 class PidCommModifier { 28 public: 29 virtual ~PidCommModifier(); 30 virtual void Modify(const Context& context, 31 uint64_t ts, 32 int32_t cpu, 33 int32_t* pid, 34 std::string* comm) const = 0; 35 }; 36 37 class FtraceEventModifier { 38 public: 39 virtual ~FtraceEventModifier(); 40 virtual void Modify(const Context& context, 41 const protos::pbzero::FtraceEventBundle::Decoder& bundle, 42 protozero::Field event, 43 protos::pbzero::FtraceEventBundle* message) const = 0; 44 }; 45 46 class ClearComms : public PidCommModifier { 47 public: 48 void Modify(const Context& context, 49 uint64_t ts, 50 int32_t cpu, 51 int32_t* pid, 52 std::string* comm) const override; 53 }; 54 55 // Implementation of every type of modifier, allow any modifier to be assigned 56 // "Do Nothing" as if it was nullptr. 57 class DoNothing : public PidCommModifier, public FtraceEventModifier { 58 public: 59 void Modify(const Context& context, 60 uint64_t ts, 61 int32_t cpu, 62 int32_t* pid, 63 std::string* comm) const override; 64 65 void Modify(const Context& context, 66 const protos::pbzero::FtraceEventBundle::Decoder& bundle, 67 protozero::Field event, 68 protos::pbzero::FtraceEventBundle* message) const override; 69 }; 70 71 } // namespace perfetto::trace_redaction 72 73 #endif // SRC_TRACE_REDACTION_MODIFY_H_ 74