sysdeps/unix/sysv/linux/mips/setrlimit64.c

   1 /* Copyright (C) 2013-2021 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 setrlimit64 __new_setrlimit64
  25 # include <sysdeps/unix/sysv/linux/setrlimit64.c>
  26 # undef setrlimit64
  27
  28 versioned_symbol (libc, __new_setrlimit64, setrlimit64, GLIBC_2_19);
  29
  30 # if SHLIB_COMPAT (libc, GLIBC_2_2, GLIBC_2_19)
  31
  32 /* RLIM64_INFINITY was supposed to be a glibc convention rather than
  33    anything seen by the kernel, but it ended being passed to the kernel
  34    through the prlimit64 syscall.  Given that a lot of binaries with
  35    the wrong constant value are in the wild, provide a wrapper function
  36    fixing the value before the syscall.  */
  37
  38 #  define OLD_RLIM64_INFINITY           0x7fffffffffffffffULL
  39
  40 int
  41 attribute_compat_text_section
  42 __old_setrlimit64 (enum __rlimit_resource resource,
  43                    const struct rlimit64 *rlimits)
  44 {
  45   struct rlimit64 krlimits;
  46
  47   if (rlimits->rlim_cur == OLD_RLIM64_INFINITY)
  48     krlimits.rlim_cur = RLIM64_INFINITY;
  49   else
  50     krlimits.rlim_cur = rlimits->rlim_cur;
  51   if (rlimits->rlim_max == OLD_RLIM64_INFINITY)
  52     krlimits.rlim_max = RLIM64_INFINITY;
  53   else
  54     krlimits.rlim_max = rlimits->rlim_max;
  55
  56   return __new_setrlimit64 (resource, &krlimits);
  57 }
  58
  59 compat_symbol (libc, __old_setrlimit64, setrlimit64, GLIBC_2_2);
  60 # endif
  61
  62 #else /* !_ABI_O32 && !_ABI_N32 */
  63 # include <sysdeps/unix/sysv/linux/setrlimit64.c>
  64 #endif