Annotation of sys/lib/libsa/nullfs.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: nullfs.c,v 1.7 2003/08/11 06:23:09 deraadt Exp $ */
2: /* $NetBSD: open.c,v 1.9 1995/09/19 09:16:52 thorpej Exp $ */
3:
4: /*-
5: * Copyright (c) 1993
6: * The Regents of the University of California. All rights reserved.
7: *
8: * This code is derived from software contributed to Berkeley by
9: * The Mach Operating System project at Carnegie-Mellon University.
10: *
11: * Redistribution and use in source and binary forms, with or without
12: * modification, are permitted provided that the following conditions
13: * are met:
14: * 1. Redistributions of source code must retain the above copyright
15: * notice, this list of conditions and the following disclaimer.
16: * 2. Redistributions in binary form must reproduce the above copyright
17: * notice, this list of conditions and the following disclaimer in the
18: * documentation and/or other materials provided with the distribution.
19: * 3. Neither the name of the University nor the names of its contributors
20: * may be used to endorse or promote products derived from this software
21: * without specific prior written permission.
22: *
23: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33: * SUCH DAMAGE.
34: *
35: * @(#)open.c 8.1 (Berkeley) 6/11/93
36: *
37: *
38: * Copyright (c) 1989, 1990, 1991 Carnegie Mellon University
39: * All Rights Reserved.
40: *
41: * Author: Alessandro Forin
42: *
43: * Permission to use, copy, modify and distribute this software and its
44: * documentation is hereby granted, provided that both the copyright
45: * notice and this permission notice appear in all copies of the
46: * software, derivative works or modified versions, and any portions
47: * thereof, and that both notices appear in supporting documentation.
48: *
49: * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
50: * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
51: * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
52: *
53: * Carnegie Mellon requests users of this software to return to
54: *
55: * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
56: * School of Computer Science
57: * Carnegie Mellon University
58: * Pittsburgh PA 15213-3890
59: *
60: * any improvements or extensions that they make and grant Carnegie the
61: * rights to redistribute these changes.
62: */
63:
64: #include "stand.h"
65:
66: /*
67: * Null filesystem
68: */
69: int
70: null_open(char *path, struct open_file *f)
71: {
72: return EIO;
73: }
74:
75: int
76: null_close(struct open_file *f)
77: {
78: return 0;
79: }
80:
81: ssize_t
82: null_read(struct open_file *f, void *buf, size_t size, size_t *resid)
83: {
84: return EIO;
85: }
86:
87: ssize_t
88: null_write(struct open_file *f, void *buf, size_t size, size_t *resid)
89: {
90: return EIO;
91: }
92:
93: off_t
94: null_seek(struct open_file *f, off_t offset, int where)
95: {
96: errno = EIO;
97: return -1;
98: }
99:
100: int
101: null_stat(struct open_file *f, struct stat *sb)
102: {
103: return EIO;
104: }
105:
106: #ifndef NO_READDIR
107: int
108: null_readdir(struct open_file *f, char *name)
109: {
110: return EIO;
111: }
112: #endif
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