1// Copyright 2015 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 "sandbox/linux/services/resource_limits.h"
6
7#include <sys/resource.h>
8#include <sys/time.h>
9
10#include <algorithm>
11
12namespace sandbox {
13
14// static
15bool ResourceLimits::Lower(int resource, rlim_t limit) {
16  struct rlimit old_rlimit;
17  if (getrlimit(resource, &old_rlimit))
18    return false;
19  // Make sure we don't raise the existing limit.
20  const struct rlimit new_rlimit = {std::min(old_rlimit.rlim_cur, limit),
21                                    std::min(old_rlimit.rlim_max, limit)};
22  int rc = setrlimit(resource, &new_rlimit);
23  return rc == 0;
24}
25
26}  // namespace sandbox
27