1// Copyright (c) 2008 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
11#include "base/file_path.h"
12
13namespace file_util {
14
15bool EvictFileFromSystemCache(const FilePath& file) {
16  int fd = open(file.value().c_str(), O_RDONLY);
17  if (fd < 0)
18    return false;
19  if (fdatasync(fd) != 0)
20    return false;
21  if (posix_fadvise(fd, 0, 0, POSIX_FADV_DONTNEED) != 0)
22    return false;
23  close(fd);
24  return true;
25}
26
27}  // namespace file_util
28