1// Copyright (c) 2011 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "base/test/test_file_util.h"
6
7#include <fcntl.h>
8#include <sys/stat.h>
9#include <sys/types.h>
10#include <unistd.h>
11
12#include "base/files/file_path.h"
13#include "base/files/scoped_file.h"
14
15namespace base {
16
17bool EvictFileFromSystemCache(const FilePath& file) {
18  ScopedFD fd(open(file.value().c_str(), O_RDONLY));
19  if (!fd.is_valid())
20    return false;
21  if (fdatasync(fd.get()) != 0)
22    return false;
23  if (posix_fadvise(fd.get(), 0, 0, POSIX_FADV_DONTNEED) != 0)
24    return false;
25  return true;
26}
27
28}  // namespace base
29