2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1988 University of Utah.
5 * Copyright (c) 1990, 1993
6 * The Regents of the University of California. All rights reserved.
8 * This code is derived from software contributed to Berkeley by
9 * the Systems Programming Group of the University of Utah Computer
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * from: Utah $Hdr: fdioctl.h 1.1 90/07/09$
38 * @(#)vnioctl.h 8.1 (Berkeley) 6/10/93
40 * From: src/sys/sys/vnioctl.h,v 1.4
45 #ifndef _SYS_MDIOCTL_H_
46 #define _SYS_MDIOCTL_H_
48 enum md_types {MD_MALLOC, MD_PRELOAD, MD_VNODE, MD_SWAP, MD_NULL};
51 * Ioctl definitions for memory disk pseudo-device.
56 unsigned md_version; /* Structure layout version */
57 unsigned md_unit; /* unit number */
58 enum md_types md_type ; /* type of disk */
59 char *md_file; /* pathname of file to mount */
60 off_t md_mediasize; /* size of disk in bytes */
61 unsigned md_sectorsize; /* sectorsize */
62 unsigned md_options; /* options */
63 u_int64_t md_base; /* base address */
64 int md_fwheads; /* firmware heads */
65 int md_fwsectors; /* firmware sectors */
66 char *md_label; /* label of the device */
67 int md_pad[MDNPAD]; /* padding */
71 #define MDCTL_NAME "mdctl"
75 * Before you can use a unit, it must be configured with MDIOCSET.
76 * The configuration persists across opens and closes of the device;
77 * an MDIOCCLR must be used to reset a configuration. An attempt to
78 * MDIOCSET an already active unit will return EBUSY.
81 #define MDIOCATTACH _IOWR('m', 0, struct md_ioctl) /* attach disk */
82 #define MDIOCDETACH _IOWR('m', 1, struct md_ioctl) /* detach disk */
83 #define MDIOCQUERY _IOWR('m', 2, struct md_ioctl) /* query status */
84 #define MDIOCRESIZE _IOWR('m', 4, struct md_ioctl) /* resize disk */
86 #define MD_CLUSTER 0x01 /* Don't cluster */
87 #define MD_RESERVE 0x02 /* Pre-reserve swap */
88 #define MD_AUTOUNIT 0x04 /* Assign next free unit */
89 #define MD_READONLY 0x08 /* Readonly mode */
90 #define MD_COMPRESS 0x10 /* Compression mode */
91 #define MD_FORCE 0x20 /* Don't try to prevent foot-shooting */
92 #define MD_ASYNC 0x40 /* Asynchronous mode */
93 #define MD_VERIFY 0x80 /* Open file with O_VERIFY (vnode only) */
94 #define MD_CACHE 0x100 /* Cache vnode data */
96 #endif /* _SYS_MDIOCTL_H_*/