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#include <string.h>
23
24
25/**	Generate a unique temporary filename using up to five characters of PFX
26 *	if it is not NULL.  The directory to put this file in is searched for
27 *	as follows: First the environment variable "TMPDIR" is checked.
28 *	If it contains the name of a writable directory, that directory is used.
29 *	If not and if DIR is not NULL, that value is checked.  If that fails,
30 *	P_tmpdir is tried and finally "/tmp".  The storage for the filename
31 *	is allocated by `malloc'.
32 */
33
34char *
35tempnam(const char *dir, const char *prefix)
36{
37	char buffer[NAME_MAX];
38
39	if (__path_search(buffer, NAME_MAX, dir, prefix, 1))
40		return NULL;
41
42	if (__gen_tempname(buffer, __GT_NOCREATE))
43		return NULL;
44
45	return strdup(buffer);
46}
47
48//link_warning(tempnam, "the use of `tempnam' is dangerous, better use `mkstemp'")
49