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1/* $OpenBSD: vndioctl.h,v 1.12 2023/05/14 18:34:02 krw Exp $ */
2/* $NetBSD: vndioctl.h,v 1.5 1995/01/25 04:46:30 cgd Exp $ */
3
4/*
5 * Copyright (c) 1988 University of Utah.
6 * Copyright (c) 1990, 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 Systems Programming Group of the University of Utah Computer
11 * Science Department.
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its contributors
22 * may be used to endorse or promote products derived from this software
23 * without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * SUCH DAMAGE.
36 *
37 * from: Utah $Hdr: fdioctl.h 1.1 90/07/09$
38 *
39 * @(#)vnioctl.h 8.1 (Berkeley) 6/10/93
40 */
41
42#ifndef _SYS_VNDIOCTL_H_
43#define _SYS_VNDIOCTL_H_
44
45#define VNDNLEN 1024 /* PATH_MAX */
46
47/*
48 * Ioctl definitions for file (vnode) disk pseudo-device.
49 */
50struct vnd_ioctl {
51 char *vnd_file; /* pathname of file to mount */
52 size_t vnd_secsize; /* sector size in bytes */
53 size_t vnd_nsectors; /* number of sectors in a track */
54 size_t vnd_ntracks; /* number of tracks per cylinder */
55 off_t vnd_size; /* (returned) size of disk */
56 u_char *vnd_key;
57 int vnd_keylen;
58 uint16_t vnd_type; /* DTYPE being emulated */
59};
60
61/*
62 * A simple structure used by userland to query about a specific vnd.
63 */
64struct vnd_user {
65 char vnu_file[VNDNLEN]; /* vnd file */
66 int vnu_unit; /* vnd unit */
67 dev_t vnu_dev; /* vnd device */
68 ino_t vnu_ino; /* vnd inode */
69};
70
71/*
72 * Before you can use a unit, it must be configured with VNDIOCSET.
73 * The configuration persists across opens and closes of the device;
74 * an VNDIOCCLR must be used to reset a configuration. An attempt to
75 * VNDIOCSET an already active unit will return EBUSY.
76 */
77#define VNDIOCSET _IOWR('F', 0, struct vnd_ioctl) /* enable disk */
78#define VNDIOCCLR _IOW('F', 1, struct vnd_ioctl) /* disable disk */
79#define VNDIOCGET _IOWR('F', 3, struct vnd_user) /* get disk info */
80
81#endif /* !_SYS_VNDIOCTL_H_ */