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#include <limits.h>
24#include <string.h>
25
26
27/**	Generate a unique temporary filename using up to five characters of PFX
28 *	if it is not NULL.  The directory to put this file in is searched for
29 *	as follows: First the environment variable "TMPDIR" is checked.
30 *	If it contains the name of a writable directory, that directory is used.
31 *	If not and if DIR is not NULL, that value is checked.  If that fails,
32 *	P_tmpdir is tried and finally "/tmp".  The storage for the filename
33 *	is allocated by `malloc'.
34 */
35
36char *
37tempnam(const char *dir, const char *prefix)
38{
39	char buffer[NAME_MAX];
40
41	if (__path_search(buffer, NAME_MAX, dir, prefix, 1))
42		return NULL;
43
44	if (__gen_tempname(buffer, __GT_NOCREATE))
45		return NULL;
46
47	return strdup(buffer);
48}
49
50//link_warning(tempnam, "the use of `tempnam' is dangerous, better use `mkstemp'")
51