1/*	$NetBSD: fclose.c,v 1.17 2010/01/11 20:39:29 joerg 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[] = "@(#)fclose.c	8.1 (Berkeley) 6/4/93";
39#endif
40__RCSID("$NetBSD: fclose.c,v 1.17 2010/01/11 20:39:29 joerg Exp $");
41#endif /* LIBC_SCCS and not lint */
42
43#include <assert.h>
44#include <errno.h>
45#include <stdio.h>
46#include <stdlib.h>
47#include <wchar.h>
48#include "reentrant.h"
49#include "local.h"
50
51int
52fclose(FILE *fp)
53{
54	int r;
55
56	_DIAGASSERT(fp != NULL);
57
58	if (fp->_flags == 0) {	/* not open! */
59		errno = EBADF;
60		return EOF;
61	}
62	FLOCKFILE(fp);
63	WCIO_FREE(fp);
64	r = fp->_flags & __SWR ? __sflush(fp) : 0;
65	if (fp->_close != NULL && (*fp->_close)(fp->_cookie) < 0)
66		r = EOF;
67	if (fp->_flags & __SMBF)
68		free((char *)fp->_bf._base);
69	if (HASUB(fp))
70		FREEUB(fp);
71	FREELB(fp);
72	FUNLOCKFILE(fp);
73	fp->_file = -1;
74	fp->_flags = 0;		/* Release this FILE for reuse. */
75	fp->_r = fp->_w = 0;	/* Mess up if reaccessed. */
76	return r;
77}
78