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- // Copyright 2019 The Chromium 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 "ash/components/disks/mount_point.h"
- #include <string>
- #include <utility>
- #include "base/bind.h"
- #include "base/logging.h"
- #include "base/threading/sequenced_task_runner_handle.h"
- namespace ash {
- namespace disks {
- namespace {
- void OnMountDone(DiskMountManager* disk_mount_manager,
- MountPoint::DoneCallback callback,
- MountError error_code,
- const DiskMountManager::MountPoint& mount_info) {
- std::unique_ptr<MountPoint> mount_point;
- if (error_code == MountError::kNone) {
- DCHECK(!mount_info.mount_path.empty());
- mount_point = std::make_unique<MountPoint>(
- base::FilePath(mount_info.mount_path), disk_mount_manager);
- }
- // Post a task to guarantee the callback isn't called inline with the
- // Mount() call.
- base::SequencedTaskRunnerHandle::Get()->PostTask(
- FROM_HERE,
- base::BindOnce(std::move(callback), error_code, std::move(mount_point)));
- }
- } // namespace
- // static
- void MountPoint::Mount(DiskMountManager* disk_mount_manager,
- const std::string& source_path,
- const std::string& source_format,
- const std::string& mount_label,
- const std::vector<std::string>& mount_options,
- MountType mount_type,
- MountAccessMode access_mode,
- DoneCallback callback) {
- // |disk_mount_manager| owns the callback to OnMountDone, so we can bind it as
- // unretained.
- disk_mount_manager->MountPath(
- source_path, source_format, mount_label, mount_options, mount_type,
- access_mode,
- base::BindOnce(&OnMountDone, base::Unretained(disk_mount_manager),
- std::move(callback)));
- }
- MountPoint::MountPoint(const base::FilePath& mount_path,
- DiskMountManager* disk_mount_manager)
- : mount_path_(mount_path), disk_mount_manager_(disk_mount_manager) {
- DCHECK(!mount_path_.empty());
- }
- MountPoint::~MountPoint() {
- if (!mount_path_.empty()) {
- disk_mount_manager_->UnmountPath(
- mount_path_.value(), base::BindOnce([](MountError error_code) {
- LOG_IF(WARNING, error_code != MountError::kNone)
- << "Failed to unmount with error code: " << error_code;
- }));
- }
- }
- void MountPoint::Unmount(MountPoint::UnmountCallback callback) {
- DCHECK(callback);
- DCHECK(!mount_path_.empty());
- // Make a copy of the |mount_path_| on the stack and clear it, in case the
- // callback runs inline and deletes |this|.
- const std::string mount_path = mount_path_.value();
- mount_path_.clear();
- disk_mount_manager_->UnmountPath(
- mount_path,
- base::BindOnce(&MountPoint::OnUmountDone, weak_factory_.GetWeakPtr(),
- std::move(callback)));
- }
- void MountPoint::OnUmountDone(MountPoint::UnmountCallback callback,
- MountError unmount_error) {
- std::move(callback).Run(unmount_error);
- }
- } // namespace disks
- } // namespace ash
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