blob: 7e7ee94aff3bcf8e3eafe6265540547d28097bb2 [file] [log] [blame]
// Copyright 2016 The Chromium OS Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "login_manager/container_manager_interface.h"
#include <stdlib.h>
#include <memory>
#include <string>
#include <vector>
#include <base/callback.h>
#include <base/files/file_path.h>
#include <libcontainer/libcontainer.h>
namespace login_manager {
class SystemUtils;
// Manages containers running in a session.
// Handles parsing of config.json and runtime.json to configure the container.
class ContainerManagerImpl : public ContainerManagerInterface {
ContainerManagerImpl(SystemUtils* system_utils,
const base::FilePath& containers_directory,
const std::string& name);
~ContainerManagerImpl() override;
// JobManagerInterface:
bool IsManagedJob(pid_t pid) override;
void HandleExit(const siginfo_t& status) override;
void RequestJobExit() override;
void EnsureJobExit(base::TimeDelta timeout) override;
// ContainerManagerInterface:
bool StartContainer(const std::vector<std::string>& env,
const ExitCallback& exit_callback) override;
void SetStatefulMode(StatefulMode mode) override;
bool GetRootFsPath(base::FilePath* path_out) const override;
bool GetContainerPID(pid_t* pid_out) const override;
using ContainerPtr = std::unique_ptr<container, decltype(&container_destroy)>;
// This will be called from RequestJobExit(). If this method returns false,
// the container will be forcibly terminated.
virtual bool RequestTermination();
// This will be called once the container has been considered to be terminated
// but before |exit_callback_| is run. This will allow subclasses to measure
// shutdown timing. |clean| is true only if the container was cleanly shut
// down.
virtual void OnContainerStopped(bool clean);
// Kills the container with SIGKILL.
void KillContainer(pid_t pid);
// Frees any resources used by the container.
void CleanUpContainer(pid_t pid);
// Owned by the caller.
SystemUtils* const system_utils_;
// Directory that holds the container config files.
const base::FilePath container_directory_;
// Name of the container.
const std::string name_;
// Currently running container.
ContainerPtr container_;
// Callback that will get invoked when the process exits.
ExitCallback exit_callback_;
// True if RequestJobExit was called before the container process exits.
bool clean_exit_;
// Whether container is stateful or stateless.
StatefulMode stateful_mode_;
} // namespace login_manager