1/*
2 * Copyright (c) 1995
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that: (1) source code distributions
7 * retain the above copyright notice and this paragraph in its entirety, (2)
8 * distributions including binary code include the above copyright notice and
9 * this paragraph in its entirety in the documentation or other materials
10 * provided with the distribution, and (3) all advertising materials mentioning
11 * features or use of this software display the following acknowledgement:
12 * ``This product includes software developed by the University of California,
13 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
14 * the University nor the names of its contributors may be used to endorse
15 * or promote products derived from this software without specific prior
16 * written permission.
17 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
20 */
21
22#include <sys/cdefs.h>
23#ifndef lint
24#if 0
25static const char rcsid[] _U_ =
26    "@(#) Header: /tcpdump/master/tcpdump/vfprintf.c,v 1.6 2003-11-16 09:36:45 guy Exp (LBL)";
27#else
28__RCSID("$NetBSD$");
29#endif
30#endif
31
32#ifdef HAVE_CONFIG_H
33#include "config.h"
34#endif
35
36#include <sys/types.h>
37
38#include <stdio.h>
39#include <stdarg.h>
40#include <stdlib.h>
41#include <unistd.h>
42
43#include "interface.h"
44
45/*
46 * Stock 4.3 doesn't have vfprintf.
47 * This routine is due to Chris Torek.
48 */
49vfprintf(f, fmt, args)
50	FILE *f;
51	char *fmt;
52	va_list args;
53{
54	int ret;
55
56	if ((f->_flag & _IOWRT) == 0) {
57		if (f->_flag & _IORW)
58			f->_flag |= _IOWRT;
59		else
60			return EOF;
61	}
62	ret = _doprnt(fmt, args, f);
63	return ferror(f) ? EOF : ret;
64}
65