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