91 lines
2.5 KiB
C++
91 lines
2.5 KiB
C++
// Copyright 2020 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <linux/futex.h>
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#include <syscall.h>
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#include <uv.h>
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#include <iostream>
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#include "absl/flags/flag.h"
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#include "uv_sapi.sapi.h" // NOLINT(build/include)
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namespace {
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class UVSapiHelloworldSandbox : public uv::UVSandbox {
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private:
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std::unique_ptr<sandbox2::Policy> ModifyPolicy(
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sandbox2::PolicyBuilder*) override {
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return sandbox2::PolicyBuilder()
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.AllowDynamicStartup()
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.AllowExit()
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.AllowFutexOp(FUTEX_WAKE_PRIVATE)
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.AllowSyscalls({__NR_epoll_create1, __NR_eventfd2, __NR_pipe2})
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.AllowWrite()
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.BuildOrDie();
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}
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};
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absl::Status HelloWorld() {
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// Initialize sandbox2 and sapi
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UVSapiHelloworldSandbox sandbox;
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SAPI_RETURN_IF_ERROR(sandbox.Init());
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uv::UVApi api(&sandbox);
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// Allocate memory for the uv_loop_t object
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void* loop_voidptr;
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SAPI_RETURN_IF_ERROR(
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sandbox.rpc_channel()->Allocate(sizeof(uv_loop_t), &loop_voidptr));
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sapi::v::RemotePtr loop(loop_voidptr);
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int return_code;
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// Initialize loop
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SAPI_ASSIGN_OR_RETURN(return_code, api.sapi_uv_loop_init(&loop));
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if (return_code != 0) {
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return absl::UnavailableError("uv_loop_init returned error " + return_code);
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}
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std::cout << "The loop is about to quit" << std::endl;
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// Run loop
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SAPI_ASSIGN_OR_RETURN(return_code, api.sapi_uv_run(&loop, UV_RUN_DEFAULT));
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if (return_code != 0) {
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return absl::UnavailableError("uv_run returned error " + return_code);
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}
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// Close loop
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SAPI_ASSIGN_OR_RETURN(return_code, api.sapi_uv_loop_close(&loop));
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if (return_code != 0) {
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return absl::UnavailableError("uv_loop_close returned error " +
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return_code);
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}
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return absl::OkStatus();
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}
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} // namespace
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int main(int argc, char* argv[]) {
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gflags::ParseCommandLineFlags(&argc, &argv, true);
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sapi::InitLogging(argv[0]);
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if (absl::Status status = HelloWorld(); !status.ok()) {
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LOG(ERROR) << "HelloWorld failed: " << status.ToString();
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return EXIT_FAILURE;
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}
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return EXIT_SUCCESS;
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}
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