1/*	$NetBSD: fsetpos.c,v 1.10 2003/08/07 16:43:25 agc Exp $	*/
2
3/*-
4 * Copyright (c) 1990, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Chris Torek.
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 * 3. Neither the name of the University nor the names of its contributors
19 *    may be used to endorse or promote products derived from this software
20 *    without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35#include <sys/cdefs.h>
36#if defined(LIBC_SCCS) && !defined(lint)
37#if 0
38static char sccsid[] = "@(#)fsetpos.c	8.1 (Berkeley) 6/4/93";
39#else
40__RCSID("$NetBSD: fsetpos.c,v 1.10 2003/08/07 16:43:25 agc Exp $");
41#endif
42#endif /* LIBC_SCCS and not lint */
43
44#include "namespace.h"
45#include <assert.h>
46#include <errno.h>
47#include <stdio.h>
48#include "reentrant.h"
49#include "local.h"
50
51/*
52 * fsetpos: like fseek.
53 */
54int
55fsetpos(FILE * __restrict fp, const fpos_t * __restrict pos)
56{
57	struct wchar_io_data *wcio;
58
59	_DIAGASSERT(fp != NULL);
60	_DIAGASSERT(pos != NULL);
61
62	wcio = WCIO_GET(fp);
63	if (wcio != NULL && wcio->wcio_mode > 0) {
64		if (fp->_write)
65			wcio->wcio_mbstate_in  = pos->_mbstate_in;
66		if (fp->_read)
67			wcio->wcio_mbstate_out = pos->_mbstate_out;
68	}
69	return fseeko(fp, pos->_pos, SEEK_SET) == (off_t)-1;
70}
71