sysdeps/unix/sysv/linux/getrlimit.c

   1 /* Linux getrlimit implementation (32 bits rlim_t).
   2    Copyright (C) 2016-2023 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library.  If not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <sys/resource.h>
  20 #include <sysdep.h>
  21 #include <shlib-compat.h>
  22
  23 #if !__RLIM_T_MATCHES_RLIM64_T
  24
  25 /* The __NR_getrlimit compatibility implementation is required iff
  26    __NR_ugetrlimit is also defined (meaning an old broken RLIM_INFINITY
  27    definition).  */
  28 # ifndef __NR_ugetrlimit
  29 #  define __NR_ugetrlimit __NR_getrlimit
  30 #  undef SHLIB_COMPAT
  31 #  define SHLIB_COMPAT(a, b, c) 0
  32 # endif
  33
  34 int
  35 __new_getrlimit (enum __rlimit_resource resource, struct rlimit *rlim)
  36 {
  37   return INLINE_SYSCALL_CALL (ugetrlimit, resource, rlim);
  38 }
  39 weak_alias (__new_getrlimit, __getrlimit)
  40 hidden_weak (__getrlimit)
  41
  42 # if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_2)
  43 /* Back compatible 2Gig limited rlimit.  */
  44 int
  45 __old_getrlimit (enum __rlimit_resource resource, struct rlimit *rlim)
  46 {
  47   return INLINE_SYSCALL_CALL (getrlimit, resource, rlim);
  48 }
  49 compat_symbol (libc, __old_getrlimit, getrlimit, GLIBC_2_0);
  50 versioned_symbol (libc, __new_getrlimit, getrlimit, GLIBC_2_2);
  51 # else
  52 weak_alias (__new_getrlimit, getrlimit)
  53 # endif
  54
  55 #endif /* __RLIM_T_MATCHES_RLIM64_T  */