/* Copyright (C) 1991-2018 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

   <http://www.gnu.org/licenses/>.  */

#include <limits.h>

#include <unistd.h>

#include <sys/resource.h>

/* Return the maximum number of file descriptors

   the current process could possibly have.  */

int

__getdtablesize (void)

{

  struct rlimit ru;

  /* This should even work if `getrlimit' is not implemented.  POSIX.1

     does not define this function but we will generate a stub which

     returns -1.  */

  return __getrlimit (RLIMIT_NOFILE, &ru) < 0 ? OPEN_MAX : ru.rlim_cur;

}

weak_alias (__getdtablesize, getdtablesize)