close.c revision 1.3.2.2
1 1.3.2.2 brezak /*- 2 1.3.2.2 brezak * Copyright (c) 1993 3 1.3.2.2 brezak * The Regents of the University of California. All rights reserved. 4 1.3.2.2 brezak * 5 1.3.2.2 brezak * This code is derived from software contributed to Berkeley by 6 1.3.2.2 brezak * The Mach Operating System project at Carnegie-Mellon University. 7 1.3.2.2 brezak * 8 1.3.2.2 brezak * Redistribution and use in source and binary forms, with or without 9 1.3.2.2 brezak * modification, are permitted provided that the following conditions 10 1.3.2.2 brezak * are met: 11 1.3.2.2 brezak * 1. Redistributions of source code must retain the above copyright 12 1.3.2.2 brezak * notice, this list of conditions and the following disclaimer. 13 1.3.2.2 brezak * 2. Redistributions in binary form must reproduce the above copyright 14 1.3.2.2 brezak * notice, this list of conditions and the following disclaimer in the 15 1.3.2.2 brezak * documentation and/or other materials provided with the distribution. 16 1.3.2.2 brezak * 3. All advertising materials mentioning features or use of this software 17 1.3.2.2 brezak * must display the following acknowledgement: 18 1.3.2.2 brezak * This product includes software developed by the University of 19 1.3.2.2 brezak * California, Berkeley and its contributors. 20 1.3.2.2 brezak * 4. Neither the name of the University nor the names of its contributors 21 1.3.2.2 brezak * may be used to endorse or promote products derived from this software 22 1.3.2.2 brezak * without specific prior written permission. 23 1.3.2.2 brezak * 24 1.3.2.2 brezak * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 1.3.2.2 brezak * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 1.3.2.2 brezak * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 1.3.2.2 brezak * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 1.3.2.2 brezak * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 1.3.2.2 brezak * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 1.3.2.2 brezak * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 1.3.2.2 brezak * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 1.3.2.2 brezak * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 1.3.2.2 brezak * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 1.3.2.2 brezak * SUCH DAMAGE. 35 1.3.2.2 brezak * 36 1.3.2.2 brezak * from: @(#)close.c 8.1 (Berkeley) 6/11/93 37 1.3.2.2 brezak * 38 1.3.2.2 brezak * 39 1.3.2.2 brezak * Copyright (c) 1989, 1990, 1991 Carnegie Mellon University 40 1.3.2.2 brezak * All Rights Reserved. 41 1.3.2.2 brezak * 42 1.3.2.2 brezak * Author: Alessandro Forin 43 1.3.2.2 brezak * 44 1.3.2.2 brezak * Permission to use, copy, modify and distribute this software and its 45 1.3.2.2 brezak * documentation is hereby granted, provided that both the copyright 46 1.3.2.2 brezak * notice and this permission notice appear in all copies of the 47 1.3.2.2 brezak * software, derivative works or modified versions, and any portions 48 1.3.2.2 brezak * thereof, and that both notices appear in supporting documentation. 49 1.3.2.2 brezak * 50 1.3.2.2 brezak * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 51 1.3.2.2 brezak * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR 52 1.3.2.2 brezak * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 53 1.3.2.2 brezak * 54 1.3.2.2 brezak * Carnegie Mellon requests users of this software to return to 55 1.3.2.2 brezak * 56 1.3.2.2 brezak * Software Distribution Coordinator or Software.Distribution (at) CS.CMU.EDU 57 1.3.2.2 brezak * School of Computer Science 58 1.3.2.2 brezak * Carnegie Mellon University 59 1.3.2.2 brezak * Pittsburgh PA 15213-3890 60 1.3.2.2 brezak * 61 1.3.2.2 brezak * any improvements or extensions that they make and grant Carnegie the 62 1.3.2.2 brezak * rights to redistribute these changes. 63 1.3.2.2 brezak * 64 1.3.2.2 brezak * $Id: close.c,v 1.3.2.2 1994/08/22 21:56:00 brezak Exp $ 65 1.3.2.2 brezak */ 66 1.3.2.2 brezak 67 1.3.2.2 brezak #include "stand.h" 68 1.3.2.2 brezak 69 1.3.2.2 brezak int 70 1.3.2.2 brezak close(fd) 71 1.3.2.2 brezak int fd; 72 1.3.2.2 brezak { 73 1.3.2.2 brezak register struct open_file *f = &files[fd]; 74 1.3.2.2 brezak int err1 = 0, err2 = 0; 75 1.3.2.2 brezak 76 1.3.2.2 brezak if ((unsigned)fd >= SOPEN_MAX || f->f_flags == 0) { 77 1.3.2.2 brezak errno = EBADF; 78 1.3.2.2 brezak return (-1); 79 1.3.2.2 brezak } 80 1.3.2.2 brezak if (!(f->f_flags & F_RAW)) 81 1.3.2.2 brezak err1 = (f->f_ops->close)(f); 82 1.3.2.2 brezak if (!(f->f_flags & F_NODEV)) 83 1.3.2.2 brezak err2 = (f->f_dev->dv_close)(f); 84 1.3.2.2 brezak f->f_flags = 0; 85 1.3.2.2 brezak if (err1) { 86 1.3.2.2 brezak errno = err1; 87 1.3.2.2 brezak return (-1); 88 1.3.2.2 brezak } 89 1.3.2.2 brezak if (err2) { 90 1.3.2.2 brezak errno = err2; 91 1.3.2.2 brezak return (-1); 92 1.3.2.2 brezak } 93 1.3.2.2 brezak return (0); 94 1.3.2.2 brezak } 95 1.3.2.2 brezak 96 1.3.2.2 brezak 97 1.3.2.2 brezak void 98 1.3.2.2 brezak closeall() 99 1.3.2.2 brezak { 100 1.3.2.2 brezak int i; 101 1.3.2.2 brezak 102 1.3.2.2 brezak for (i = 0; i < SOPEN_MAX; i++) 103 1.3.2.2 brezak if (files[i].f_flags != 0) 104 1.3.2.2 brezak (void)close(i); 105 1.3.2.2 brezak } 106
Indexes created Thu Oct 02 14:10:14 GMT 2025