1/*-
2 * Copyright (c) 1990, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Chris Torek.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 4. Neither the name of the University nor the names of its contributors
17 *    may be used to endorse or promote products derived from this software
18 *    without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33#if defined(LIBC_SCCS) && !defined(lint)
34static char sccsid[] = "@(#)fclose.c	8.1 (Berkeley) 6/4/93";
35#endif /* LIBC_SCCS and not lint */
36#include <sys/cdefs.h>
37__FBSDID("$FreeBSD: src/lib/libc/stdio/fclose.c,v 1.12 2007/01/09 00:28:06 imp Exp $");
38
39#include "namespace.h"
40#include <errno.h>
41#include <stdio.h>
42#include <stdlib.h>
43#include "un-namespace.h"
44#include "libc_private.h"
45#include "local.h"
46
47int
48fclose(FILE *fp)
49{
50	int r;
51
52	pthread_once(&__sdidinit, __sinit);
53
54	if (fp == NULL) {
55		errno = EFAULT;
56		return (EOF);
57	}
58	if (fp->_flags == 0) {	/* not open! */
59		errno = EBADF;
60		return (EOF);
61	}
62	FLOCKFILE(fp);
63	r = fp->_flags & __SWR ? __sflush(fp) : 0;
64	if (fp->_close != NULL && (*fp->_close)(fp->_cookie) < 0)
65		r = EOF;
66	if (fp->_flags & __SMBF)
67		free((char *)fp->_bf._base);
68	if (HASUB(fp))
69		FREEUB(fp);
70	if (HASLB(fp))
71		FREELB(fp);
72	fp->_file = -1;
73	fp->_r = fp->_w = 0;	/* Mess up if reaccessed. */
74	FUNLOCKFILE(fp);
75	__sfprelease(fp);	/* Release this FILE for reuse. */
76	return (r);
77}
78