NetBSD/tools/compat/dprintf.c

78 lines
2.2 KiB
C

/* $NetBSD: dprintf.c,v 1.2 2013/03/05 16:29:09 christos Exp $ */
/*-
* Copyright (c) 2013 NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Christos Zoulas.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_NBTOOL_CONFIG_H
#include "nbtool_config.h"
#endif
#if !HAVE_DPRINTF
#include <stdlib.h>
#ifndef HAVE_NBTOOL_CONFIG_H
/* These headers are required, but included from nbtool_config.h */
#include <stdio.h>
#include <stdarg.h>
#include <unistd.h>
#endif
int
dprintf(int fd, const char *fmt, ...)
{
FILE *fp;
int e;
va_list ap;
if ((e = dup(fd)) == -1)
return -1;
if ((fp = fdopen(e, "r+")) == NULL) {
(void)close(e);
return -1;
}
va_start(ap, fmt);
e = vfprintf(fp, fmt, ap);
va_end(ap);
(void)fclose(fp);
return e;
}
#endif /* HAVE_DPRINTF */
#ifdef TEST
int
main(int argc, char *argv[])
{
dprintf(1, "Hello %s\n", "world");
return 0;
}
#endif