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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_ASH_GUEST_OS_PUBLIC_GUEST_OS_MOUNT_PROVIDER_H_
#define CHROME_BROWSER_ASH_GUEST_OS_PUBLIC_GUEST_OS_MOUNT_PROVIDER_H_
#include <string>
#include "base/files/file_path.h"
#include "base/functional/callback_forward.h"
#include "base/memory/weak_ptr.h"
#include "chrome/browser/ash/guest_os/guest_id.h"
#include "chrome/browser/ash/guest_os/guest_os_file_watcher.h"
#include "chrome/browser/ash/guest_os/public/types.h"
class Profile;
namespace guest_os {
class GuestOsMountProviderInner;
class GuestOsMountProvider {
public:
using PrepareCallback = base::OnceCallback<
void(bool success, int cid, int port, base::FilePath homedir)>;
GuestOsMountProvider();
virtual ~GuestOsMountProvider();
GuestOsMountProvider(const GuestOsMountProvider&) = delete;
GuestOsMountProvider& operator=(const GuestOsMountProvider&) = delete;
// Get the profile for this provider.
virtual Profile* profile() = 0;
// The localised name to show in UI elements such as the files app sidebar.
virtual std::string DisplayName() = 0;
virtual guest_os::GuestId GuestId() = 0;
// The type of VM which this provider creates mounts for. Needed for e.g.
// enterprise policy which applies different rules to each disk volume
// depending on the underlying VM.
virtual VmType vm_type() = 0;
// Requests the provider to mount its volume.
void Mount(base::OnceCallback<void(bool)> callback);
// Requests the provider to unmount.
void Unmount();
// Creates a file watcher for the given path, specified by `mount_path` as the
// path to where the volume is mounted and `relative_path` is the path to
// watch relative to `mount_path`. The watcher starts off idle, call Watch to
// start watching.
virtual std::unique_ptr<GuestOsFileWatcher> CreateFileWatcher(
base::FilePath mount_path,
base::FilePath relative_path) = 0;
protected:
// Called prior to mounting a volume, for the mount provider to do any
// needed setup (e.g. ensure the VM is running). Must call `callback` once
// finished to actually mount. On error set `success` to false and the
// mount will be aborted, on success set `success` to true, set `cid` and
// `port` to the address that the guests's sftp server is listening on,
// and set `homedir` to the path, relative to the VM root, which is being
// shared.
virtual void Prepare(PrepareCallback callback) = 0;
private:
std::unique_ptr<GuestOsMountProviderInner> callback_;
base::WeakPtrFactory<GuestOsMountProvider> weak_ptr_factory_{this};
};
} // namespace guest_os
#endif // CHROME_BROWSER_ASH_GUEST_OS_PUBLIC_GUEST_OS_MOUNT_PROVIDER_H_
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