xref: /original-bsd/lib/libc/stdio/tmpnam.c (revision c3e32dec)
1 /*-
2  * Copyright (c) 1990, 1993
3  *	The Regents of the University of California.  All rights reserved.
4  *
5  * This code is derived from software contributed to Berkeley by
6  * Chris Torek.
7  *
8  * %sccs.include.redist.c%
9  */
10 
11 #if defined(LIBC_SCCS) && !defined(lint)
12 static char sccsid[] = "@(#)tmpnam.c	8.1 (Berkeley) 06/04/93";
13 #endif /* LIBC_SCCS and not lint */
14 
15 #include <unistd.h>
16 #include <stdio.h>
17 
18 char *
19 tmpnam(s)
20 	char *s;
21 {
22 	static char buf[L_tmpnam];
23 
24 	if (s == NULL)
25 		s = buf;
26 	(void)snprintf(s, L_tmpnam, "%stmp.XXXXXX", P_tmpdir);
27 	return(mktemp(s));
28 }
29