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 25 static 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: vfprintf.c,v 1.2 2010/12/05 05:11:31 christos Exp $"); 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 */ 49 vfprintf(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