1 /*-
2 * Copyright (c) 2009 David Schultz <das@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Copyright (c) 2011 The FreeBSD Foundation
6 * All rights reserved.
7 * Portions of this software were developed by David Chisnall
8 * under sponsorship from the FreeBSD Foundation.
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 AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 * $FreeBSD: head/lib/libc/stdio/vdprintf.c 227753 2011-11-20 14:45:42Z theraven $
32 */
33
34 #include "namespace.h"
35 #include <errno.h>
36 #include <limits.h>
37 #include <pthread.h> /* for FAKE_FILE PTHREAD_MUTEX_INITIALIZER */
38 #include <stdarg.h>
39 #include <stdio.h>
40 #include "un-namespace.h"
41
42 #include "local.h"
43 #include "xlocale_private.h"
44
45 int
vdprintf(int fd,const char * __restrict fmt,va_list ap)46 vdprintf(int fd, const char * __restrict fmt, va_list ap)
47 {
48 FILE f = FAKE_FILE;
49 unsigned char buf[BUFSIZ];
50 int ret;
51
52 if (fd > SHRT_MAX) {
53 errno = EMFILE;
54 return (EOF);
55 }
56
57 f.pub._p = buf;
58 f.pub._w = sizeof(buf);
59 f.pub._flags = __SWR;
60 f.pub._fileno = fd;
61 f._cookie = &f;
62 f._write = __swrite;
63 f._bf._base = buf;
64 f._bf._size = sizeof(buf);
65
66 if ((ret = __vfprintf(&f, __get_locale(), fmt, ap)) < 0)
67 return (ret);
68
69 return (__fflush(&f) ? EOF : ret);
70 }
71