1*4a5d661aSToomas Soome /* $NetBSD: close.c,v 1.7 1997/01/22 00:38:09 cgd Exp $ */
2*4a5d661aSToomas Soome
3*4a5d661aSToomas Soome /*-
4*4a5d661aSToomas Soome * Copyright (c) 1993
5*4a5d661aSToomas Soome * The Regents of the University of California. All rights reserved.
6*4a5d661aSToomas Soome *
7*4a5d661aSToomas Soome * This code is derived from software contributed to Berkeley by
8*4a5d661aSToomas Soome * The Mach Operating System project at Carnegie-Mellon University.
9*4a5d661aSToomas Soome *
10*4a5d661aSToomas Soome * Redistribution and use in source and binary forms, with or without
11*4a5d661aSToomas Soome * modification, are permitted provided that the following conditions
12*4a5d661aSToomas Soome * are met:
13*4a5d661aSToomas Soome * 1. Redistributions of source code must retain the above copyright
14*4a5d661aSToomas Soome * notice, this list of conditions and the following disclaimer.
15*4a5d661aSToomas Soome * 2. Redistributions in binary form must reproduce the above copyright
16*4a5d661aSToomas Soome * notice, this list of conditions and the following disclaimer in the
17*4a5d661aSToomas Soome * documentation and/or other materials provided with the distribution.
18*4a5d661aSToomas Soome * 4. Neither the name of the University nor the names of its contributors
19*4a5d661aSToomas Soome * may be used to endorse or promote products derived from this software
20*4a5d661aSToomas Soome * without specific prior written permission.
21*4a5d661aSToomas Soome *
22*4a5d661aSToomas Soome * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23*4a5d661aSToomas Soome * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24*4a5d661aSToomas Soome * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25*4a5d661aSToomas Soome * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26*4a5d661aSToomas Soome * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27*4a5d661aSToomas Soome * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28*4a5d661aSToomas Soome * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29*4a5d661aSToomas Soome * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30*4a5d661aSToomas Soome * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31*4a5d661aSToomas Soome * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32*4a5d661aSToomas Soome * SUCH DAMAGE.
33*4a5d661aSToomas Soome *
34*4a5d661aSToomas Soome * @(#)close.c 8.1 (Berkeley) 6/11/93
35*4a5d661aSToomas Soome *
36*4a5d661aSToomas Soome *
37*4a5d661aSToomas Soome * Copyright (c) 1989, 1990, 1991 Carnegie Mellon University
38*4a5d661aSToomas Soome * All Rights Reserved.
39*4a5d661aSToomas Soome *
40*4a5d661aSToomas Soome * Author: Alessandro Forin
41*4a5d661aSToomas Soome *
42*4a5d661aSToomas Soome * Permission to use, copy, modify and distribute this software and its
43*4a5d661aSToomas Soome * documentation is hereby granted, provided that both the copyright
44*4a5d661aSToomas Soome * notice and this permission notice appear in all copies of the
45*4a5d661aSToomas Soome * software, derivative works or modified versions, and any portions
46*4a5d661aSToomas Soome * thereof, and that both notices appear in supporting documentation.
47*4a5d661aSToomas Soome *
48*4a5d661aSToomas Soome * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
49*4a5d661aSToomas Soome * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
50*4a5d661aSToomas Soome * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
51*4a5d661aSToomas Soome *
52*4a5d661aSToomas Soome * Carnegie Mellon requests users of this software to return to
53*4a5d661aSToomas Soome *
54*4a5d661aSToomas Soome * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
55*4a5d661aSToomas Soome * School of Computer Science
56*4a5d661aSToomas Soome * Carnegie Mellon University
57*4a5d661aSToomas Soome * Pittsburgh PA 15213-3890
58*4a5d661aSToomas Soome *
59*4a5d661aSToomas Soome * any improvements or extensions that they make and grant Carnegie the
60*4a5d661aSToomas Soome * rights to redistribute these changes.
61*4a5d661aSToomas Soome */
62*4a5d661aSToomas Soome
63*4a5d661aSToomas Soome #include <sys/cdefs.h>
64*4a5d661aSToomas Soome __FBSDID("$FreeBSD$");
65*4a5d661aSToomas Soome
66*4a5d661aSToomas Soome #include "stand.h"
67*4a5d661aSToomas Soome
68*4a5d661aSToomas Soome int
close(int fd)69*4a5d661aSToomas Soome close(int fd)
70*4a5d661aSToomas Soome {
71*4a5d661aSToomas Soome struct open_file *f = &files[fd];
72*4a5d661aSToomas Soome int err1 = 0, err2 = 0;
73*4a5d661aSToomas Soome
74*4a5d661aSToomas Soome if ((unsigned)fd >= SOPEN_MAX || f->f_flags == 0) {
75*4a5d661aSToomas Soome errno = EBADF;
76*4a5d661aSToomas Soome return (-1);
77*4a5d661aSToomas Soome }
78*4a5d661aSToomas Soome if (f->f_rabuf != NULL) {
79*4a5d661aSToomas Soome free(f->f_rabuf);
80*4a5d661aSToomas Soome f->f_rabuf = NULL;
81*4a5d661aSToomas Soome }
82*4a5d661aSToomas Soome if (!(f->f_flags & F_RAW) && f->f_ops)
83*4a5d661aSToomas Soome err1 = (f->f_ops->fo_close)(f);
84*4a5d661aSToomas Soome if (!(f->f_flags & F_NODEV) && f->f_dev)
85*4a5d661aSToomas Soome err2 = (f->f_dev->dv_close)(f);
86*4a5d661aSToomas Soome if (f->f_devdata != NULL)
87*4a5d661aSToomas Soome devclose(f);
88*4a5d661aSToomas Soome f->f_flags = 0;
89*4a5d661aSToomas Soome if (err1) {
90*4a5d661aSToomas Soome errno = err1;
91*4a5d661aSToomas Soome return (-1);
92*4a5d661aSToomas Soome }
93*4a5d661aSToomas Soome if (err2) {
94*4a5d661aSToomas Soome errno = err2;
95*4a5d661aSToomas Soome return (-1);
96*4a5d661aSToomas Soome }
97*4a5d661aSToomas Soome return (0);
98*4a5d661aSToomas Soome }
99