sysdeps/unix/sysv/linux/setrlimit.c

   1 /* Linux setrlimit implementation (32 bits off_t).
   2    Copyright (C) 2016-2018 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    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <errno.h>
  20 #include <sys/resource.h>
  21 #include <sys/types.h>
  22 #include <shlib-compat.h>
  23
  24 #if !__RLIM_T_MATCHES_RLIM64_T
  25
  26 /* The compatibility symbol is meant to match the old __NR_getrlimit syscall
  27    (with broken RLIM_INFINITY definition).  It should be provided iff
  28    __NR_getrlimit and __NR_ugetrlimit are both defined.  */
  29 # ifndef __NR_ugetrlimit
  30 #  undef SHLIB_COMPAT
  31 #  define SHLIB_COMPAT(a, b, c) 0
  32 # endif
  33
  34 int
  35 __setrlimit (enum __rlimit_resource resource, const struct rlimit *rlim)
  36 {
  37   struct rlimit64 rlim64;
  38
  39   if (rlim->rlim_cur == RLIM_INFINITY)
  40     rlim64.rlim_cur = RLIM64_INFINITY;
  41   else
  42     rlim64.rlim_cur = rlim->rlim_cur;
  43   if (rlim->rlim_max == RLIM_INFINITY)
  44     rlim64.rlim_max = RLIM64_INFINITY;
  45   else
  46     rlim64.rlim_max = rlim->rlim_max;
  47
  48   return INLINE_SYSCALL_CALL (prlimit64, 0, resource, &rlim64, NULL);
  49 }
  50
  51 libc_hidden_def (__setrlimit)
  52 # if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_2)
  53 strong_alias (__setrlimit, __setrlimit_1)
  54 compat_symbol (libc, __setrlimit, setrlimit, GLIBC_2_0);
  55 versioned_symbol (libc, __setrlimit_1, setrlimit, GLIBC_2_2);
  56 # else
  57 weak_alias (__setrlimit, setrlimit)
  58 # endif
  59
  60 #endif /* __RLIM_T_MATCHES_RLIM64_T  */