1/*	$OpenBSD: fclose.c,v 1.9 2009/11/09 00:18:27 kurt Exp $ */
2/*-
3 * Copyright (c) 1990, 1993
4 *	The Regents of the University of California.  All rights reserved.
5 *
6 * This code is derived from software contributed to Berkeley by
7 * Chris Torek.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#include <errno.h>
35#include <stdio.h>
36#include <stdlib.h>
37#include "local.h"
38
39int
40fclose(FILE *fp)
41{
42	int r;
43
44	if (fp->_flags == 0) {	/* not open! */
45		errno = EBADF;
46		return (EOF);
47	}
48	FLOCKFILE(fp);
49	WCIO_FREE(fp);
50	r = fp->_flags & __SWR ? __sflush(fp) : 0;
51	if (fp->_close != NULL && (*fp->_close)(fp->_cookie) < 0)
52		r = EOF;
53	if (fp->_flags & __SMBF)
54		free((char *)fp->_bf._base);
55	if (HASUB(fp))
56		FREEUB(fp);
57	if (HASLB(fp))
58		FREELB(fp);
59	fp->_r = fp->_w = 0;	/* Mess up if reaccessed. */
60	fp->_flags = 0;		/* Release this FILE for reuse. */
61	FUNLOCKFILE(fp);
62	return (r);
63}
64