1 /* $OpenBSD: asprintf.c,v 1.4 1998/06/21 22:13:46 millert Exp $ */
4 * Copyright (c) 1997 Todd C. Miller <Todd.Miller@courtesan.com>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
18 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
19 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
20 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
21 * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
22 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
23 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
24 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
25 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
26 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
27 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 * $FreeBSD: src/lib/libc/stdio/asprintf.c,v 1.6 1999/08/28 00:00:55 peter Exp $
30 * $DragonFly: src/lib/libc/stdio/asprintf.c,v 1.8 2006/03/02 18:05:30 joerg Exp $
39 #include "priv_stdio.h"
42 asprintf(char **str, char const *fmt, ...)
49 f.pub._flags = __SWR | __SSTR | __SALC;
50 f._bf._base = f.pub._p = (unsigned char *)malloc(128);
51 if (f._bf._base == NULL) {
56 f._bf._size = f.pub._w = 127; /* Leave room for the NUL */
58 f.fl_mutex = PTHREAD_MUTEX_INITIALIZER;
61 memset(WCIO_GET(&f), 0, sizeof(struct wchar_io_data));
63 ret = __vfprintf(&f, fmt, ap); /* Use unlocked __vfprintf */
72 *str = (char *)f._bf._base;