sysdeps/unix/sysv/linux/mips/getrlimit64.c

   1 /* Copyright (C) 2013-2023 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, see
  16    <https://www.gnu.org/licenses/>.  */
  17
  18 #include <sgidefs.h>
  19
  20 #if _MIPS_SIM == _ABIO32 || _MIPS_SIM == _ABIN32
  21
  22 # include <shlib-compat.h>
  23
  24 # define getrlimit64 __new_getrlimit64
  25 # include <sysdeps/unix/sysv/linux/getrlimit64.c>
  26 # undef getrlimit64
  27
  28 versioned_symbol (libc, __getrlimit64, getrlimit64, GLIBC_2_19);
  29 strong_alias (__getrlimit64, __GI_getrlimit64)
  30
  31 # if SHLIB_COMPAT (libc, GLIBC_2_2, GLIBC_2_19)
  32
  33 /* RLIM64_INFINITY was supposed to be a glibc convention rather than
  34    anything seen by the kernel, but it ended being passed to the kernel
  35    through the prlimit64 syscall.  Given that a lot of binaries with
  36    the wrong constant value are in the wild, provide a wrapper function
  37    fixing the value after the syscall.  */
  38
  39 #  define OLD_RLIM64_INFINITY           0x7fffffffffffffffULL
  40
  41 int
  42 attribute_compat_text_section
  43 __old_getrlimit64 (enum __rlimit_resource resource,
  44                    struct rlimit64 *rlimits)
  45 {
  46   struct rlimit64 krlimits;
  47
  48   if (__getrlimit64 (resource, &krlimits) < 0)
  49     return -1;
  50
  51   if (krlimits.rlim_cur == RLIM64_INFINITY)
  52     rlimits->rlim_cur = OLD_RLIM64_INFINITY;
  53   else
  54     rlimits->rlim_cur = krlimits.rlim_cur;
  55   if (krlimits.rlim_max == RLIM64_INFINITY)
  56     rlimits->rlim_max = OLD_RLIM64_INFINITY;
  57   else
  58     rlimits->rlim_max = krlimits.rlim_max;
  59
  60   return 0;
  61 }
  62
  63 compat_symbol (libc, __old_getrlimit64, getrlimit64, GLIBC_2_2);
  64 # endif
  65
  66 #else /* !_ABI_O32 && !_ABI_N32 */
  67 # include <sysdeps/unix/sysv/linux/getrlimit64.c>
  68 #endif