Annotation of sys/dev/vndioctl.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: vndioctl.h,v 1.6 2004/06/20 18:03:03 pedro 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 90
46:
47: /*
48: * Ioctl definitions for file (vnode) disk pseudo-device.
49: */
50: struct vnd_ioctl {
51: char *vnd_file; /* pathname of file to mount */
52: off_t vnd_size; /* (returned) size of disk */
53: u_char *vnd_key;
54: int vnd_keylen;
55: };
56:
57: /*
58: * A simple structure used by userland to query about a specific vnd.
59: */
60: struct vnd_user {
61: char vnu_file[VNDNLEN]; /* vnd file */
62: int vnu_unit; /* vnd unit */
63: dev_t vnu_dev; /* vnd device */
64: ino_t vnu_ino; /* vnd inode */
65: };
66:
67: /*
68: * Before you can use a unit, it must be configured with VNDIOCSET.
69: * The configuration persists across opens and closes of the device;
70: * an VNDIOCCLR must be used to reset a configuration. An attempt to
71: * VNDIOCSET an already active unit will return EBUSY.
72: */
73: #define VNDIOCSET _IOWR('F', 0, struct vnd_ioctl) /* enable disk */
74: #define VNDIOCCLR _IOW('F', 1, struct vnd_ioctl) /* disable disk */
75: #define VNDIOCGET _IOWR('F', 2, struct vnd_user) /* get disk info */
76:
77: #endif /* !_SYS_VNDIOCTL_H_ */
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