1*e34cb67cStb /* $OpenBSD: tmpnam.c,v 1.12 2017/11/28 06:55:49 tb Exp $ */
2df930be7Sderaadt /*-
3df930be7Sderaadt * Copyright (c) 1990, 1993, 1994
4df930be7Sderaadt * The Regents of the University of California. All rights reserved.
5df930be7Sderaadt *
6df930be7Sderaadt * This code is derived from software contributed to Berkeley by
7df930be7Sderaadt * Chris Torek.
8df930be7Sderaadt *
9df930be7Sderaadt * Redistribution and use in source and binary forms, with or without
10df930be7Sderaadt * modification, are permitted provided that the following conditions
11df930be7Sderaadt * are met:
12df930be7Sderaadt * 1. Redistributions of source code must retain the above copyright
13df930be7Sderaadt * notice, this list of conditions and the following disclaimer.
14df930be7Sderaadt * 2. Redistributions in binary form must reproduce the above copyright
15df930be7Sderaadt * notice, this list of conditions and the following disclaimer in the
16df930be7Sderaadt * documentation and/or other materials provided with the distribution.
176580fee3Smillert * 3. Neither the name of the University nor the names of its contributors
18df930be7Sderaadt * may be used to endorse or promote products derived from this software
19df930be7Sderaadt * without specific prior written permission.
20df930be7Sderaadt *
21df930be7Sderaadt * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22df930be7Sderaadt * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23df930be7Sderaadt * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24df930be7Sderaadt * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25df930be7Sderaadt * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26df930be7Sderaadt * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27df930be7Sderaadt * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28df930be7Sderaadt * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29df930be7Sderaadt * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30df930be7Sderaadt * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31df930be7Sderaadt * SUCH DAMAGE.
32df930be7Sderaadt */
33df930be7Sderaadt
34df930be7Sderaadt #include <sys/types.h>
35df930be7Sderaadt
36df930be7Sderaadt #include <stdio.h>
37df930be7Sderaadt #include <unistd.h>
38df930be7Sderaadt
395cf55735Sderaadt __warn_references(tmpnam,
40*e34cb67cStb "tmpnam() possibly used unsafely; consider using mkstemp()");
415cf55735Sderaadt
42df930be7Sderaadt char *
tmpnam(char * s)434e503363Sotto tmpnam(char *s)
44df930be7Sderaadt {
45df930be7Sderaadt static u_long tmpcount;
46df930be7Sderaadt static char buf[L_tmpnam];
47df930be7Sderaadt
48df930be7Sderaadt if (s == NULL)
49df930be7Sderaadt s = buf;
50763196a6Smillert (void)snprintf(s, L_tmpnam, "%stmp.%lu.XXXXXXXXX", P_tmpdir, tmpcount);
51df930be7Sderaadt ++tmpcount;
525cf55735Sderaadt return (_mktemp(s));
53df930be7Sderaadt }
54