blob: 88357c9d4bddba9b49352ac14fad516239a0ba7a [file] [log] [blame]
// Copyright 2015 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 "chromeos/disks/suspend_unmount_manager.h"
#include "base/bind.h"
#include "base/location.h"
#include "chromeos/disks/disk.h"
#include "chromeos/disks/disk_mount_manager.h"
namespace chromeos {
namespace disks {
namespace {
void OnRefreshCompleted(bool success) {}
} // namespace
SuspendUnmountManager::SuspendUnmountManager(
DiskMountManager* disk_mount_manager)
: disk_mount_manager_(disk_mount_manager) {
PowerManagerClient::Get()->AddObserver(this);
}
SuspendUnmountManager::~SuspendUnmountManager() {
PowerManagerClient::Get()->RemoveObserver(this);
if (block_suspend_token_)
PowerManagerClient::Get()->UnblockSuspend(block_suspend_token_);
}
void SuspendUnmountManager::SuspendImminent(
power_manager::SuspendImminent::Reason reason) {
DCHECK(unmounting_paths_.empty());
if (!unmounting_paths_.empty())
return;
std::set<std::string> mount_paths;
for (const auto& pair : disk_mount_manager_->disks()) {
if ((pair.second->device_type() == DEVICE_TYPE_USB ||
pair.second->device_type() == DEVICE_TYPE_SD) &&
!pair.second->mount_path().empty()) {
mount_paths.insert(pair.second->mount_path());
}
}
for (const auto& mount_path : mount_paths) {
if (block_suspend_token_.is_empty()) {
block_suspend_token_ = base::UnguessableToken::Create();
PowerManagerClient::Get()->BlockSuspend(block_suspend_token_,
"SuspendUnmountManager");
}
disk_mount_manager_->UnmountPath(
mount_path, base::BindOnce(&SuspendUnmountManager::OnUnmountComplete,
weak_ptr_factory_.GetWeakPtr(), mount_path));
unmounting_paths_.insert(mount_path);
}
}
void SuspendUnmountManager::SuspendDone(base::TimeDelta sleep_duration) {
// SuspendDone can be called before OnUnmountComplete when suspend is
// cancelled, or it takes long time to unmount volumes.
unmounting_paths_.clear();
disk_mount_manager_->EnsureMountInfoRefreshed(
base::BindOnce(&OnRefreshCompleted), true /* force */);
block_suspend_token_ = {};
}
void SuspendUnmountManager::OnUnmountComplete(const std::string& mount_path,
chromeos::MountError error_code) {
// This can happen when unmount completes after suspend done is called.
if (unmounting_paths_.erase(mount_path) != 1)
return;
if (unmounting_paths_.empty() && block_suspend_token_) {
PowerManagerClient::Get()->UnblockSuspend(block_suspend_token_);
block_suspend_token_ = {};
}
}
} // namespace disks
} // namespace chromeos