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 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * @(#)fclose.c 8.1 (Berkeley) 6/4/93 37 * $FreeBSD: src/lib/libc/stdio/fclose.c,v 1.8 1999/11/21 22:34:57 dt Exp $ 38 * $DragonFly: src/lib/libc/stdio/fclose.c,v 1.7 2004/06/09 19:40:59 hmp Exp $ 39 */ 40 41 #include <errno.h> 42 #include <stdio.h> 43 #include <stdlib.h> 44 #include "local.h" 45 #include "libc_private.h" 46 47 int 48 fclose(FILE *fp) 49 { 50 int r; 51 52 if (fp->_flags == 0) { /* not open! */ 53 errno = EBADF; 54 return (EOF); 55 } 56 FLOCKFILE(fp); 57 r = fp->_flags & __SWR ? __sflush(fp) : 0; 58 if (fp->_close != NULL && (*fp->_close)(fp->_cookie) < 0) 59 r = EOF; 60 if (fp->_flags & __SMBF) 61 free((char *)fp->_bf._base); 62 if (HASUB(fp)) 63 FREEUB(fp); 64 if (HASLB(fp)) 65 FREELB(fp); 66 /* 67 * XXX-HITEN the FUNLOCKFILE(fp) cannot be moved below because of 68 * the way the funlockfile() implementation works; it surrounds 69 * the code with a if (fp->_file >= 0)... terrible, just terrible. 70 * 71 * This mess will be cleaned up when I rewrite the file contention 72 * locking code. 73 */ 74 FUNLOCKFILE(fp); 75 fp->_file = -1; 76 fp->_r = fp->_w = 0; /* Mess up if reaccessed. */ 77 fp->_flags = 0; /* Release this FILE for reuse. */ 78 return (r); 79 } 80