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//
// Copyright (C) 2019 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 <sysexits.h>
#include <chrono>
#include <iostream>
#include <map>
#include <sstream>
#include <android-base/file.h>
#include <android-base/logging.h>
#include <android-base/unique_fd.h>
#include <libsnapshot/snapshot.h>
using namespace std::string_literals;
int Usage() {
std::cerr << "snapshotctl: Control snapshots.\n"
"Usage: snapshotctl [action] [flags]\n"
"Actions:\n"
" dump\n"
" Print snapshot states.\n"
" merge\n"
" Deprecated.\n";
return EX_USAGE;
}
namespace android {
namespace snapshot {
bool DumpCmdHandler(int /*argc*/, char** argv) {
android::base::InitLogging(argv, &android::base::StderrLogger);
return SnapshotManager::New()->Dump(std::cout);
}
bool MapCmdHandler(int, char** argv) {
android::base::InitLogging(argv, &android::base::StderrLogger);
using namespace std::chrono_literals;
return SnapshotManager::New()->MapAllSnapshots(5000ms);
}
bool UnmapCmdHandler(int, char** argv) {
android::base::InitLogging(argv, &android::base::StderrLogger);
return SnapshotManager::New()->UnmapAllSnapshots();
}
bool MergeCmdHandler(int /*argc*/, char** argv) {
android::base::InitLogging(argv, &android::base::StderrLogger);
LOG(WARNING) << "Deprecated. Call update_engine_client --merge instead.";
return false;
}
static std::map<std::string, std::function<bool(int, char**)>> kCmdMap = {
// clang-format off
{"dump", DumpCmdHandler},
{"merge", MergeCmdHandler},
{"map", MapCmdHandler},
{"unmap", UnmapCmdHandler},
// clang-format on
};
} // namespace snapshot
} // namespace android
int main(int argc, char** argv) {
using namespace android::snapshot;
if (argc < 2) {
return Usage();
}
for (const auto& cmd : kCmdMap) {
if (cmd.first == argv[1]) {
return cmd.second(argc, argv) ? EX_OK : EX_SOFTWARE;
}
}
return Usage();
}
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