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 
12 namespace sandbox {
13 
14 // static
Lower(int resource,rlim_t limit)15 bool 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