1/* Copyright (C) 1991,1993,1996-1999,2000 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, write to the Free
16   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
17   02111-1307 USA.
18*/
19
20
21#include <stdio_private.h>
22
23
24/** Generate a unique filename in P_tmpdir.  If S is NULL return NULL.
25 *	This makes this function thread safe.
26 */
27
28char *
29tmpnam_r(char *s)
30{
31	if (s == NULL)
32		return NULL;
33
34	if (__path_search(s, L_tmpnam, NULL, NULL, 0))
35		return NULL;
36	if (__gen_tempname(s, __GT_NOCREATE))
37		return NULL;
38
39	return s;
40}
41
42//link_warning (tmpnam_r, "the use of `tmpnam_r' is dangerous, better use `mkstemp'")
43