glibc/sysdeps/unix/sysv/linux/getrlimit.c

/* Linux getrlimit implementation (32 bits rlim_t).
   Copyright (C) 2016-2020 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library.  If not, see
   <https://www.gnu.org/licenses/>.  */

#include <sys/resource.h>
#include <sysdep.h>
#include <shlib-compat.h>

#if !__RLIM_T_MATCHES_RLIM64_T

/* The __NR_getrlimit compatibility implementation is required iff
   __NR_ugetrlimit is also defined (meaning an old broken RLIM_INFINITY
   definition).  */
# ifndef __NR_ugetrlimit
#  define __NR_ugetrlimit __NR_getrlimit
#  undef SHLIB_COMPAT
#  define SHLIB_COMPAT(a, b, c) 0
# endif

int
__new_getrlimit (enum __rlimit_resource resource, struct rlimit *rlim)
{
  return INLINE_SYSCALL_CALL (ugetrlimit, resource, rlim);
}
weak_alias (__new_getrlimit, __getrlimit)
hidden_weak (__getrlimit)

# if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_2)
/* Back compatible 2Gig limited rlimit.  */
int
__old_getrlimit (enum __rlimit_resource resource, struct rlimit *rlim)
{
  return INLINE_SYSCALL_CALL (getrlimit, resource, rlim);
}
compat_symbol (libc, __old_getrlimit, getrlimit, GLIBC_2_0);
versioned_symbol (libc, __new_getrlimit, getrlimit, GLIBC_2_2);
# else
weak_alias (__new_getrlimit, getrlimit)
# endif

#endif /* __RLIM_T_MATCHES_RLIM64_T  */