tmpnam.c revision 92986 
10Sduke/*-
22963Ssogoel * Copyright (c) 1990, 1993, 1994
30Sduke *	The Regents of the University of California.  All rights reserved.
40Sduke *
50Sduke * This code is derived from software contributed to Berkeley by
60Sduke * Chris Torek.
72963Ssogoel *
80Sduke * Redistribution and use in source and binary forms, with or without
90Sduke * modification, are permitted provided that the following conditions
100Sduke * are met:
110Sduke * 1. Redistributions of source code must retain the above copyright
120Sduke *    notice, this list of conditions and the following disclaimer.
130Sduke * 2. Redistributions in binary form must reproduce the above copyright
140Sduke *    notice, this list of conditions and the following disclaimer in the
150Sduke *    documentation and/or other materials provided with the distribution.
160Sduke * 3. All advertising materials mentioning features or use of this software
170Sduke *    must display the following acknowledgement:
180Sduke *	This product includes software developed by the University of
190Sduke *	California, Berkeley and its contributors.
200Sduke * 4. Neither the name of the University nor the names of its contributors
210Sduke *    may be used to endorse or promote products derived from this software
220Sduke *    without specific prior written permission.
230Sduke *
240Sduke * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
250Sduke * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
260Sduke * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
270Sduke * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
280Sduke * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
290Sduke * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
300Sduke * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
310Sduke * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
320Sduke * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
330Sduke * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
340Sduke * SUCH DAMAGE.
350Sduke */
360Sduke
370Sduke#if defined(LIBC_SCCS) && !defined(lint)
380Sdukestatic char sccsid[] = "@(#)tmpnam.c	8.3 (Berkeley) 3/28/94";
390Sduke#endif /* LIBC_SCCS and not lint */
400Sduke#include <sys/cdefs.h>
410Sduke__FBSDID("$FreeBSD: head/lib/libc/stdio/tmpnam.c 92986 2002-03-22 21:53:29Z obrien $");
42
43#include <sys/types.h>
44
45#include <stdio.h>
46#include <unistd.h>
47
48__warn_references(tmpnam,
49    "warning: tmpnam() possibly used unsafely; consider using mkstemp()");
50
51extern char *_mktemp(char *);
52
53char *
54tmpnam(s)
55	char *s;
56{
57	static u_long tmpcount;
58	static char buf[L_tmpnam];
59
60	if (s == NULL)
61		s = buf;
62	(void)snprintf(s, L_tmpnam, "%stmp.%lu.XXXXXX", P_tmpdir, tmpcount);
63	++tmpcount;
64	return (_mktemp(s));
65}
66