1 // Copyright 2019 Google LLC 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // https://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #ifndef SANDBOXED_API_SANDBOX2_FORKINGCLIENT_H_ 16 #define SANDBOXED_API_SANDBOX2_FORKINGCLIENT_H_ 17 18 #include <sys/types.h> 19 #include <memory> 20 21 #include "sandboxed_api/sandbox2/client.h" 22 #include "sandboxed_api/sandbox2/comms.h" 23 #include "sandboxed_api/sandbox2/forkserver.h" 24 25 namespace sandbox2 { 26 27 class ForkingClient : public Client { 28 public: ForkingClient(Comms * comms)29 explicit ForkingClient(Comms* comms) : Client(comms) {} 30 31 // Forks the current process (if asked by the Executor in the parent process), 32 // and returns the newly created PID to this Executor. This is used if the 33 // current Client objects acts as a wrapper of ForkServer (and this process 34 // was created to act as a ForkServer). 35 // Return values specified as with 'fork' (incl. -1). 36 pid_t WaitAndFork(); 37 38 private: 39 // ForkServer object, which is used only if the current process is meant 40 // to behave like a Fork-Server, i.e. to create a new process which will be 41 // later sandboxed (with SandboxMeHere()). 42 std::unique_ptr<ForkServer> fork_server_worker_; 43 }; 44 45 } // namespace sandbox2 46 47 #endif // SANDBOXED_API_SANDBOX2_FORKINGCLIENT_H_ 48