1 /* $NetBSD: dprintf.c,v 1.2 2013/03/05 16:29:09 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 2013 NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Christos Zoulas. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #ifdef HAVE_NBTOOL_CONFIG_H 33 #include "nbtool_config.h" 34 #endif 35 36 #if !HAVE_DPRINTF 37 #include <stdlib.h> 38 #ifndef HAVE_NBTOOL_CONFIG_H 39 /* These headers are required, but included from nbtool_config.h */ 40 #include <stdio.h> 41 #include <stdarg.h> 42 #include <unistd.h> 43 #endif 44 45 int 46 dprintf(int fd, const char *fmt, ...) 47 { 48 FILE *fp; 49 int e; 50 va_list ap; 51 52 if ((e = dup(fd)) == -1) 53 return -1; 54 55 if ((fp = fdopen(e, "r+")) == NULL) { 56 (void)close(e); 57 return -1; 58 } 59 60 va_start(ap, fmt); 61 e = vfprintf(fp, fmt, ap); 62 va_end(ap); 63 64 (void)fclose(fp); 65 return e; 66 } 67 68 #endif /* HAVE_DPRINTF */ 69 70 #ifdef TEST 71 int 72 main(int argc, char *argv[]) 73 { 74 dprintf(1, "Hello %s\n", "world"); 75 return 0; 76 } 77 #endif 78