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// Copyright (C) 2020 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.
#pragma once
#include <poll.h>
#include <string>
#include <vector>
#include "dm-snapshot-merge/snapuserd_server.h"
#include "user-space-merge/snapuserd_server.h"
namespace android {
namespace snapshot {
class Daemon {
// The Daemon class is a singleton to avoid
// instantiating more than once
public:
Daemon() {}
static Daemon& Instance() {
static Daemon instance;
return instance;
}
bool StartServerForDmSnapshot(int arg_start, int argc, char** argv);
bool StartServerForUserspaceSnapshots(int arg_start, int argc, char** argv);
void Interrupt();
void ReceivedSocketSignal();
bool IsUserspaceSnapshotsEnabled();
bool IsDmSnapshotTestingEnabled();
bool StartDaemon(int argc, char** argv);
private:
// Signal mask used with ppoll()
sigset_t signal_mask_;
Daemon(Daemon const&) = delete;
void operator=(Daemon const&) = delete;
SnapuserdServer server_;
UserSnapshotServer user_server_;
void MaskAllSignalsExceptIntAndTerm();
void MaskAllSignals();
static void SignalHandler(int signal);
};
} // namespace snapshot
} // namespace android
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