1*ec63e07aSXin Li // Copyright 2019 Google LLC 2*ec63e07aSXin Li // 3*ec63e07aSXin Li // Licensed under the Apache License, Version 2.0 (the "License"); 4*ec63e07aSXin Li // you may not use this file except in compliance with the License. 5*ec63e07aSXin Li // You may obtain a copy of the License at 6*ec63e07aSXin Li // 7*ec63e07aSXin Li // https://www.apache.org/licenses/LICENSE-2.0 8*ec63e07aSXin Li // 9*ec63e07aSXin Li // Unless required by applicable law or agreed to in writing, software 10*ec63e07aSXin Li // distributed under the License is distributed on an "AS IS" BASIS, 11*ec63e07aSXin Li // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12*ec63e07aSXin Li // See the License for the specific language governing permissions and 13*ec63e07aSXin Li // limitations under the License. 14*ec63e07aSXin Li 15*ec63e07aSXin Li #ifndef SANDBOXED_API_SANDBOX2_LOGSINK_H_ 16*ec63e07aSXin Li #define SANDBOXED_API_SANDBOX2_LOGSINK_H_ 17*ec63e07aSXin Li 18*ec63e07aSXin Li #include "absl/log/log_entry.h" 19*ec63e07aSXin Li #include "absl/log/log_sink.h" 20*ec63e07aSXin Li #include "absl/synchronization/mutex.h" 21*ec63e07aSXin Li #include "sandboxed_api/sandbox2/comms.h" 22*ec63e07aSXin Li 23*ec63e07aSXin Li namespace sandbox2 { 24*ec63e07aSXin Li 25*ec63e07aSXin Li // The LogSink will register itself with the facilities and forward all log 26*ec63e07aSXin Li // messages to the executor on a given file descriptor. 27*ec63e07aSXin Li class LogSink : public absl::LogSink { 28*ec63e07aSXin Li public: 29*ec63e07aSXin Li static constexpr char kLogFDName[] = "sb2_logsink"; 30*ec63e07aSXin Li 31*ec63e07aSXin Li explicit LogSink(int fd); 32*ec63e07aSXin Li ~LogSink() override; 33*ec63e07aSXin Li 34*ec63e07aSXin Li LogSink(const LogSink&) = delete; 35*ec63e07aSXin Li LogSink& operator=(const LogSink&) = delete; 36*ec63e07aSXin Li 37*ec63e07aSXin Li void Send(const absl::LogEntry& e) override; 38*ec63e07aSXin Li 39*ec63e07aSXin Li private: 40*ec63e07aSXin Li Comms comms_; 41*ec63e07aSXin Li 42*ec63e07aSXin Li // Needed to make the LogSink thread safe. 43*ec63e07aSXin Li absl::Mutex lock_; 44*ec63e07aSXin Li }; 45*ec63e07aSXin Li 46*ec63e07aSXin Li } // namespace sandbox2 47*ec63e07aSXin Li 48*ec63e07aSXin Li #endif // SANDBOXED_API_SANDBOX2_LOGSINK_H_ 49