1 // Copyright 2020 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 #include <cstdlib> 16 17 #include "absl/base/attributes.h" 18 #include "sandboxed_api/sandbox2/fork_client.h" 19 #include "sandboxed_api/sandbox2/global_forkclient.h" 20 21 namespace sandbox2 { StartGlobalForkserverFromLibCtor()22void StartGlobalForkserverFromLibCtor() { 23 if (!getenv(sandbox2::kForkServerDisableEnv)) { 24 GlobalForkClient::ForceStart(); 25 } 26 } 27 } // namespace sandbox2 28 29 // Run the ForkServer from the constructor, when no other threads are present. 30 // Because it's possible to start thread-inducing initializers before 31 // RunInitializers() (base/googleinit.h) it's not enough to just register 32 // a 0000_<name> initializer instead. 33 ABSL_ATTRIBUTE_UNUSED StartSandbox2Forkserver()34__attribute__((constructor)) static void StartSandbox2Forkserver() { 35 sandbox2::StartGlobalForkserverFromLibCtor(); 36 } 37