1 /* $FreeBSD: src/lib/libstand/close.c,v 1.1.1.1.6.1 2000/09/10 01:32:06 ps Exp $ */ 2 /* $DragonFly: src/lib/libstand/close.c,v 1.2 2003/06/17 04:26:51 dillon Exp $ */ 3 /* $NetBSD: close.c,v 1.7 1997/01/22 00:38:09 cgd Exp $ */ 4 5 /*- 6 * Copyright (c) 1993 7 * The Regents of the University of California. All rights reserved. 8 * 9 * This code is derived from software contributed to Berkeley by 10 * The Mach Operating System project at Carnegie-Mellon University. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. 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 * @(#)close.c 8.1 (Berkeley) 6/11/93 37 * 38 * 39 * Copyright (c) 1989, 1990, 1991 Carnegie Mellon University 40 * All Rights Reserved. 41 * 42 * Author: Alessandro Forin 43 * 44 * Permission to use, copy, modify and distribute this software and its 45 * documentation is hereby granted, provided that both the copyright 46 * notice and this permission notice appear in all copies of the 47 * software, derivative works or modified versions, and any portions 48 * thereof, and that both notices appear in supporting documentation. 49 * 50 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 51 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR 52 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 53 * 54 * Carnegie Mellon requests users of this software to return to 55 * 56 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 57 * School of Computer Science 58 * Carnegie Mellon University 59 * Pittsburgh PA 15213-3890 60 * 61 * any improvements or extensions that they make and grant Carnegie the 62 * rights to redistribute these changes. 63 */ 64 65 #include "stand.h" 66 67 int 68 close(int fd) 69 { 70 struct open_file *f = &files[fd]; 71 int err1 = 0, err2 = 0; 72 73 if ((unsigned)fd >= SOPEN_MAX || f->f_flags == 0) { 74 errno = EBADF; 75 return (-1); 76 } 77 if (f->f_rabuf != NULL) { 78 free(f->f_rabuf); 79 f->f_rabuf = NULL; 80 } 81 if (!(f->f_flags & F_RAW) && f->f_ops) 82 err1 = (f->f_ops->fo_close)(f); 83 if (f->f_dev) 84 err2 = (f->f_dev->dv_close)(f); 85 if (f->f_devdata != NULL) 86 devclose(f); 87 f->f_flags = 0; 88 if (err1) { 89 errno = err1; 90 return (-1); 91 } 92 if (err2) { 93 errno = err2; 94 return (-1); 95 } 96 return (0); 97 } 98