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1/*
2 * Copyright (c) 2004-2005 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_LICENSE_OSREFERENCE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the
10 * License may not be used to create, or enable the creation or
11 * redistribution of, unlawful or unlicensed copies of an Apple operating
12 * system, or to circumvent, violate, or enable the circumvention or
13 * violation of, any terms of an Apple operating system software license
14 * agreement.
15 *
16 * Please obtain a copy of the License at
17 * http://www.opensource.apple.com/apsl/ and read it before using this
18 * file.
19 *
20 * The Original Code and all software distributed under the License are
21 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
22 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
23 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
24 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
25 * Please see the License for the specific language governing rights and
26 * limitations under the License.
27 *
28 * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
29 */
30/*
31 * Copyright (c) 1988 University of Utah.
32 * Copyright (c) 1990, 1993
33 * The Regents of the University of California. All rights reserved.
34 *
35 * This code is derived from software contributed to Berkeley by
36 * the Systems Programming Group of the University of Utah Computer
37 * Science Department.
38 *
39 * Redistribution and use in source and binary forms, with or without
40 * modification, are permitted provided that the following conditions
41 * are met:
42 * 1. Redistributions of source code must retain the above copyright
43 * notice, this list of conditions and the following disclaimer.
44 * 2. Redistributions in binary form must reproduce the above copyright
45 * notice, this list of conditions and the following disclaimer in the
46 * documentation and/or other materials provided with the distribution.
47 * 3. All advertising materials mentioning features or use of this software
48 * must display the following acknowledgement:
49 * This product includes software developed by the University of
50 * California, Berkeley and its contributors.
51 * 4. Neither the name of the University nor the names of its contributors
52 * may be used to endorse or promote products derived from this software
53 * without specific prior written permission.
54 *
55 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
56 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
57 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
58 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
59 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
60 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
61 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
62 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
63 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
64 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
65 * SUCH DAMAGE.
66 *
67 * from: Utah $Hdr: fdioctl.h 1.1 90/07/09$
68 *
69 * @(#)vnioctl.h 8.1 (Berkeley) 6/10/93
70 *
71 * $FreeBSD: src/sys/sys/vnioctl.h,v 1.4 1999/09/17 05:33:58 dillon Exp $
72 */
73
74#ifndef _SYS_VNIOCTL_H_
75#define _SYS_VNIOCTL_H_
76
77#include <sys/appleapiopts.h>
78#include <sys/cdefs.h>
79
80
81/*
82 * Ioctl definitions for file (vnode) disk pseudo-device.
83 */
84
85#define _PATH_VNTAB "/etc/vntab" /* default config file */
86
87typedef enum {
88 vncontrol_readwrite_io_e = 0
89} vncontrol_t;
90
91struct vn_ioctl {
92 char * vn_file; /* pathname of file to mount */
93 int vn_size; /* (returned) size of disk */
94 vncontrol_t vn_control;
95};
96
97#ifdef KERNEL_PRIVATE
98
99struct user_vn_ioctl {
100 u_int64_t vn_file; /* pathname of file to mount */
101 int vn_size; /* (returned) size of disk */
102 vncontrol_t vn_control;
103};
104
105#endif /* KERNEL_PRIVATE */
106
107/*
108 * Before you can use a unit, it must be configured with VNIOCSET.
109 * The configuration persists across opens and closes of the device;
110 * an VNIOCCLR must be used to reset a configuration. An attempt to
111 * VNIOCSET an already active unit will return EBUSY.
112 */
113#define VNIOCATTACH _IOWR('F', 0, struct vn_ioctl) /* attach file */
114#define VNIOCDETACH _IOWR('F', 1, struct vn_ioctl) /* detach disk */
115#define VNIOCGSET _IOWR('F', 2, u_int32_t ) /* set global option */
116#define VNIOCGCLEAR _IOWR('F', 3, u_int32_t ) /* reset --//-- */
117#define VNIOCUSET _IOWR('F', 4, u_int32_t ) /* set unit option */
118#define VNIOCUCLEAR _IOWR('F', 5, u_int32_t ) /* reset --//-- */
119#define VNIOCSHADOW _IOWR('F', 6, struct vn_ioctl) /* attach shadow */
120#ifdef KERNEL_PRIVATE
121#define VNIOCATTACH64 _IOWR('F', 0, struct user_vn_ioctl) /* attach file - LP64 */
122#define VNIOCDETACH64 _IOWR('F', 1, struct user_vn_ioctl) /* detach disk - LP64 */
123#define VNIOCSHADOW64 _IOWR('F', 6, struct user_vn_ioctl) /* attach shadow - LP64 */
124#endif /* KERNEL_PRIVATE */
125
126#define VN_LABELS 0x1 /* Use disk(/slice) labels */
127#define VN_FOLLOW 0x2 /* Debug flow in vn driver */
128#define VN_DEBUG 0x4 /* Debug data in vn driver */
129#define VN_IO 0x8 /* Debug I/O in vn driver */
130#define VN_DONTCLUSTER 0x10 /* Don't cluster */
131#define VN_RESERVE 0x20 /* Pre-reserve swap */
132
133
134#endif /* _SYS_VNIOCTL_H_*/