91 lines
2.4 KiB
C++
91 lines
2.4 KiB
C++
//
|
|
// Copyright (C) 2022 The Android Open Source Project
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
#include <set>
|
|
|
|
#include "common/frontend/socket_vsock_proxy/server.h"
|
|
#include "common/libs/utils/contains.h"
|
|
|
|
namespace cuttlefish {
|
|
namespace socket_proxy {
|
|
namespace {
|
|
|
|
bool socketErrorIsRecoverable(int error) {
|
|
std::set<int> unrecoverable{EACCES, EAFNOSUPPORT, EINVAL, EPROTONOSUPPORT};
|
|
return !Contains(unrecoverable, error);
|
|
}
|
|
|
|
[[noreturn]] static void SleepForever() {
|
|
while (true) {
|
|
sleep(std::numeric_limits<unsigned int>::max());
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
TcpServer::TcpServer(int port) : port_(port) {}
|
|
|
|
SharedFD TcpServer::Start() {
|
|
SharedFD server;
|
|
|
|
server = SharedFD::SocketLocalServer(port_, SOCK_STREAM);
|
|
CHECK(server->IsOpen()) << "Could not start server on " << port_;
|
|
|
|
return server;
|
|
}
|
|
|
|
std::string TcpServer::Describe() const {
|
|
return fmt::format("tcp: {}", port_);
|
|
}
|
|
|
|
VsockServer::VsockServer(int port) : port_(port) {}
|
|
|
|
// Intended to run in the guest
|
|
SharedFD VsockServer::Start() {
|
|
SharedFD server;
|
|
|
|
do {
|
|
server = SharedFD::VsockServer(port_, SOCK_STREAM);
|
|
if (!server->IsOpen() && !socketErrorIsRecoverable(server->GetErrno())) {
|
|
LOG(ERROR) << "Could not open vsock socket: " << server->StrError();
|
|
// socket_vsock_proxy will now wait forever in the guest on encountering an
|
|
// "unrecoverable" errno. This is to prevent churn from being restarted by
|
|
// init.vsoc.rc.
|
|
SleepForever();
|
|
}
|
|
} while (!server->IsOpen());
|
|
|
|
return server;
|
|
}
|
|
|
|
std::string VsockServer::Describe() const {
|
|
return fmt::format("vsock: {}", port_);
|
|
}
|
|
|
|
DupServer::DupServer(int fd) : fd_(fd), sfd_(SharedFD::Dup(fd_)) {
|
|
close(fd);
|
|
}
|
|
|
|
SharedFD DupServer::Start() {
|
|
CHECK(sfd_->IsOpen()) << "Could not start duplicate server for passed fd";
|
|
return sfd_;
|
|
}
|
|
|
|
std::string DupServer::Describe() const {
|
|
return fmt::format("fd: {}", fd_);
|
|
}
|
|
|
|
}
|
|
} |