sandbox/linux/services/resource_limits.cc

   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
  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