1 /* $NetBSD: fclose.c,v 1.14 2001/12/07 11:47:41 yamt 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. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 #if defined(LIBC_SCCS) && !defined(lint) 41 #if 0 42 static char sccsid[] = "@(#)fclose.c 8.1 (Berkeley) 6/4/93"; 43 #endif 44 __RCSID("$NetBSD: fclose.c,v 1.14 2001/12/07 11:47:41 yamt Exp $"); 45 #endif /* LIBC_SCCS and not lint */ 46 47 #include <assert.h> 48 #include <errno.h> 49 #include <stdio.h> 50 #include <stdlib.h> 51 #include <wchar.h> 52 #include "local.h" 53 #include "reentrant.h" 54 55 int 56 fclose(fp) 57 FILE *fp; 58 { 59 int r; 60 61 _DIAGASSERT(fp != NULL); 62 63 if (fp->_flags == 0) { /* not open! */ 64 errno = EBADF; 65 return (EOF); 66 } 67 FLOCKFILE(fp); 68 WCIO_FREE(fp); 69 r = fp->_flags & __SWR ? __sflush(fp) : 0; 70 if (fp->_close != NULL && (*fp->_close)(fp->_cookie) < 0) 71 r = EOF; 72 if (fp->_flags & __SMBF) 73 free((char *)fp->_bf._base); 74 if (HASUB(fp)) 75 FREEUB(fp); 76 if (HASLB(fp)) 77 FREELB(fp); 78 FUNLOCKFILE(fp); 79 fp->_file = -1; 80 fp->_flags = 0; /* Release this FILE for reuse. */ 81 fp->_r = fp->_w = 0; /* Mess up if reaccessed. */ 82 return (r); 83 } 84