sysdeps/unix/sysv/linux/setrlimit64.c

   1 /* Copyright (C) 2010 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */
  18
  19 #include <errno.h>
  20 #include <sys/resource.h>
  21 #include <sys/types.h>
  22 #include <sysdep.h>
  23 #include <kernel-features.h>
  24
  25 /* Set the soft and hard limits for RESOURCE to *RLIMITS.
  26    Only the super-user can increase hard limits.
  27    Return 0 if successful, -1 if not (and sets errno).  */
  28 int
  29 setrlimit64 (resource, rlimits)
  30      enum __rlimit_resource resource;
  31      const struct rlimit64 *rlimits;
  32 {
  33 #ifdef __ASSUME_PRLIMIT64
  34   return INLINE_SYSCALL (prlimit64, 4, 0, resource, rlimits, NULL);
  35 #else
  36 # ifdef __NR_prlimit64
  37   int res = INLINE_SYSCALL (prlimit64, 4, 0, resource, rlimits, NULL);
  38   if (res == 0 || errno != ENOSYS)
  39     return res;
  40 # endif
  41   struct rlimit rlimits32;
  42
  43   if (rlimits->rlim_cur >= RLIM_INFINITY)
  44     rlimits32.rlim_cur = RLIM_INFINITY;
  45   else
  46     rlimits32.rlim_cur = rlimits->rlim_cur;
  47   if (rlimits->rlim_max >= RLIM_INFINITY)
  48     rlimits32.rlim_max = RLIM_INFINITY;
  49   else
  50     rlimits32.rlim_max = rlimits->rlim_max;
  51
  52   return __setrlimit (resource, &rlimits32);
  53 #endif
  54 }