/* 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 <stdio.h>

/* Generate a unique filename in P_tmpdir.  If S is NULL return NULL.

   This makes this function thread safe.  */

char *

tmpnam_r (char *s)

{

  if (s == NULL)

    return NULL;

  if (__path_search (s, L_tmpnam, NULL, NULL, 0))

    return NULL;

  if (__gen_tempname (s, 0, 0, __GT_NOCREATE))

    return NULL;

  return s;

}

link_warning (tmpnam_r,

	      "the use of `tmpnam_r' is dangerous, better use `mkstemp'")