base/test/test_file_util_linux.cc

   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
  14 namespace file_util {
  15
  16 bool EvictFileFromSystemCache(const base::FilePath& file) {
  17   int fd = open(file.value().c_str(), O_RDONLY);
  18   if (fd < 0)
  19     return false;
  20   if (fdatasync(fd) != 0)
  21     return false;
  22   if (posix_fadvise(fd, 0, 0, POSIX_FADV_DONTNEED) != 0)
  23     return false;
  24   close(fd);
  25   return true;
  26 }
  27
  28 }  // namespace file_util