1  /* Copyright (C) 2018-2023 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  #define USE_VERSIONED_RLIMIT
      19  #include <sysdeps/unix/sysv/linux/setrlimit64.c>
      20  versioned_symbol (libc, __setrlimit, setrlimit, GLIBC_2_27);
      21  versioned_symbol (libc, __setrlimit64, setrlimit64, GLIBC_2_27);
      22  
      23  #if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_27)
      24  /* RLIM64_INFINITY was supposed to be a glibc convention rather than
      25     anything seen by the kernel, but it ended being passed to the kernel
      26     through the prlimit64 syscall.  Given that a lot of binaries with
      27     the wrong constant value are in the wild, provide a wrapper function
      28     fixing the value before the syscall.  */
      29  # define OLD_RLIM64_INFINITY           0x7fffffffffffffffULL
      30  
      31  int
      32  attribute_compat_text_section
      33  __old_setrlimit64 (enum __rlimit_resource resource,
      34  		   const struct rlimit64 *rlimits)
      35  {
      36    struct rlimit64 krlimits;
      37  
      38    if (rlimits->rlim_cur == OLD_RLIM64_INFINITY)
      39      krlimits.rlim_cur = RLIM64_INFINITY;
      40    else
      41      krlimits.rlim_cur = rlimits->rlim_cur;
      42    if (rlimits->rlim_max == OLD_RLIM64_INFINITY)
      43      krlimits.rlim_max = RLIM64_INFINITY;
      44    else
      45      krlimits.rlim_max = rlimits->rlim_max;
      46  
      47    return __setrlimit64 (resource, &krlimits);
      48  }
      49  
      50  strong_alias (__old_setrlimit64, __old_setrlimit)
      51  compat_symbol (libc, __old_setrlimit, setrlimit, GLIBC_2_0);
      52  compat_symbol (libc, __old_setrlimit64, setrlimit64, GLIBC_2_1);
      53  #endif