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/*
* Copyright (C) 2018 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 "host/libs/vm_manager/vm_manager.h"
#include <iomanip>
#include <memory>
#include <string>
#include <unordered_map>
#include <unordered_set>
#include <vector>
#include <android-base/logging.h>
#include <fruit/fruit.h>
#include "common/libs/utils/result.h"
#include "host/libs/config/command_source.h"
#include "host/libs/config/cuttlefish_config.h"
#include "host/libs/config/inject.h"
#include "host/libs/vm_manager/crosvm_manager.h"
#include "host/libs/vm_manager/gem5_manager.h"
#include "host/libs/vm_manager/qemu_manager.h"
namespace cuttlefish {
namespace vm_manager {
std::unique_ptr<VmManager> GetVmManager(VmmMode vmm_mode, Arch arch) {
std::unique_ptr<VmManager> vmm;
if (vmm_mode == VmmMode::kQemu) {
vmm.reset(new QemuManager(arch));
} else if (vmm_mode == VmmMode::kGem5) {
vmm.reset(new Gem5Manager(arch));
} else if (vmm_mode == VmmMode::kCrosvm) {
vmm.reset(new CrosvmManager());
}
if (!vmm) {
LOG(ERROR) << "Invalid VM manager: " << vmm_mode;
return {};
}
if (!vmm->IsSupported()) {
LOG(ERROR) << "VM manager " << vmm_mode
<< " is not supported on this machine.";
return {};
}
return vmm;
}
Result<std::unordered_map<std::string, std::string>>
ConfigureMultipleBootDevices(const std::string& pci_path, int pci_offset,
int num_disks) {
int num_boot_devices =
(num_disks < VmManager::kDefaultNumBootDevices) ? num_disks : VmManager::kDefaultNumBootDevices;
std::string boot_devices_prop_val = "";
for (int i = 0; i < num_boot_devices; i++) {
std::stringstream stream;
stream << std::setfill('0') << std::setw(2) << std::hex
<< pci_offset + i + VmManager::kDefaultNumHvcs + VmManager::kMaxDisks - num_disks;
boot_devices_prop_val += pci_path + stream.str() + ".0,";
}
boot_devices_prop_val.pop_back();
return {{{"androidboot.boot_devices", boot_devices_prop_val}}};
}
class VmmCommands : public CommandSource, public LateInjected {
public:
INJECT(VmmCommands(const CuttlefishConfig& config, VmManager& vmm))
: config_(config), vmm_(vmm) {}
// CommandSource
Result<std::vector<MonitorCommand>> Commands() override {
return vmm_.StartCommands(config_, dependencyCommands_);
}
// SetupFeature
std::string Name() const override { return "VirtualMachineManager"; }
bool Enabled() const override { return true; }
// LateInjected
Result<void> LateInject(fruit::Injector<>& injector) override {
dependencyCommands_ = injector.getMultibindings<VmmDependencyCommand>();
return {};
}
private:
std::unordered_set<SetupFeature*> Dependencies() const override { return {}; }
Result<void> ResultSetup() override { return {}; }
const CuttlefishConfig& config_;
VmManager& vmm_;
std::vector<VmmDependencyCommand*> dependencyCommands_;
};
fruit::Component<fruit::Required<const CuttlefishConfig,
const CuttlefishConfig::InstanceSpecific>,
VmManager>
VmManagerComponent() {
return fruit::createComponent()
.registerProvider([](const CuttlefishConfig& config,
const CuttlefishConfig::InstanceSpecific& instance) {
auto vmm = GetVmManager(config.vm_manager(), instance.target_arch());
CHECK(vmm) << "Invalid VMM/Arch: \"" << config.vm_manager() << "\""
<< (int)instance.target_arch() << "\"";
return vmm.release(); // fruit takes ownership of raw pointers
})
.addMultibinding<CommandSource, VmmCommands>()
.addMultibinding<LateInjected, VmmCommands>()
.addMultibinding<SetupFeature, VmmCommands>();
}
} // namespace vm_manager
} // namespace cuttlefish
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