2 * Copyright (c) 1988 University of Utah.
3 * Copyright (c) 1990, 1993
4 * The Regents of the University of California. All rights reserved.
6 * This code is derived from software contributed to Berkeley by
7 * the Systems Programming Group of the University of Utah Computer
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the University of
21 * California, Berkeley and its contributors.
22 * 4. Neither the name of the University nor the names of its contributors
23 * may be used to endorse or promote products derived from this software
24 * without specific prior written permission.
26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 * from: Utah $Hdr: fdioctl.h 1.1 90/07/09$
40 * @(#)vnioctl.h 8.1 (Berkeley) 6/10/93
42 * From: src/sys/sys/vnioctl.h,v 1.4
47 #ifndef _SYS_MDIOCTL_H_
48 #define _SYS_MDIOCTL_H_
50 enum md_types {MD_MALLOC, MD_PRELOAD, MD_VNODE, MD_SWAP};
53 * Ioctl definitions for memory disk pseudo-device.
57 unsigned md_version; /* Structure layout version */
58 unsigned md_unit; /* unit number */
59 enum md_types md_type ; /* type of disk */
60 char *md_file; /* pathname of file to mount */
61 unsigned md_size; /* size of disk in DEV_BSIZE units */
62 unsigned md_options; /* options */
63 u_int64_t md_base; /* base address */
64 int pad[100]; /* padding for future ideas */
68 #define MDCTL_NAME "mdctl"
72 * Before you can use a unit, it must be configured with MDIOCSET.
73 * The configuration persists across opens and closes of the device;
74 * an MDIOCCLR must be used to reset a configuration. An attempt to
75 * MDIOCSET an already active unit will return EBUSY.
78 #define MDIOCATTACH _IOWR('m', 0, struct md_ioctl) /* attach disk */
79 #define MDIOCDETACH _IOWR('m', 1, struct md_ioctl) /* detach disk */
80 #define MDIOCQUERY _IOWR('m', 2, struct md_ioctl) /* query status */
82 #define MD_CLUSTER 0x01 /* Don't cluster */
83 #define MD_RESERVE 0x02 /* Pre-reserve swap */
84 #define MD_AUTOUNIT 0x04 /* Assign next free unit */
85 #define MD_READONLY 0x08 /* Readonly mode */
86 #define MD_COMPRESS 0x10 /* Compression mode */
87 #define MD_FORCE 0x20 /* Don't try to prevent foot-shooting */
89 #endif /* _SYS_MDIOCTL_H_*/