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- // 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 "components/metrics/drive_metrics_provider.h"
- #include <windows.h>
- #include <winioctl.h>
- #include <vector>
- #include "base/files/file.h"
- #include "base/files/file_path.h"
- namespace metrics {
- // static
- bool DriveMetricsProvider::HasSeekPenalty(const base::FilePath& path,
- bool* has_seek_penalty) {
- std::vector<base::FilePath::StringType> components = path.GetComponents();
- base::File volume(base::FilePath(L"\\\\.\\" + components[0]),
- base::File::FLAG_OPEN);
- if (!volume.IsValid())
- return false;
- STORAGE_PROPERTY_QUERY query = {};
- query.QueryType = PropertyStandardQuery;
- query.PropertyId = StorageDeviceSeekPenaltyProperty;
- DEVICE_SEEK_PENALTY_DESCRIPTOR result;
- DWORD bytes_returned;
- BOOL success = DeviceIoControl(
- volume.GetPlatformFile(), IOCTL_STORAGE_QUERY_PROPERTY, &query,
- sizeof(query), &result, sizeof(result), &bytes_returned, nullptr);
- if (success == FALSE || bytes_returned < sizeof(result))
- return false;
- *has_seek_penalty = result.IncursSeekPenalty != FALSE;
- return true;
- }
- } // namespace metrics
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