1/*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1988 University of Utah. 5 * Copyright (c) 1990, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * the Systems Programming Group of the University of Utah Computer 10 * Science Department. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 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. 23 * 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 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * from: Utah $Hdr: fdioctl.h 1.1 90/07/09$ 37 */ 38 39#ifndef _SYS_MDIOCTL_H_ 40#define _SYS_MDIOCTL_H_ 41 42enum md_types {MD_MALLOC, MD_PRELOAD, MD_VNODE, MD_SWAP, MD_NULL}; 43 44/* 45 * Ioctl definitions for memory disk pseudo-device. 46 */ 47 48#define MDNPAD 96 49struct md_ioctl { 50 unsigned md_version; /* Structure layout version */ 51 unsigned md_unit; /* unit number */ 52 enum md_types md_type ; /* type of disk */ 53 char *md_file; /* pathname of file to mount */ 54 off_t md_mediasize; /* size of disk in bytes */ 55 unsigned md_sectorsize; /* sectorsize */ 56 unsigned md_options; /* options */ 57 u_int64_t md_base; /* base address */ 58 int md_fwheads; /* firmware heads */ 59 int md_fwsectors; /* firmware sectors */ 60 char *md_label; /* label of the device */ 61 int md_pad[MDNPAD]; /* padding */ 62}; 63 64#define MD_NAME "md" 65#define MDCTL_NAME "mdctl" 66#define MDIOVERSION 0 67 68/* 69 * Before you can use a unit, it must be configured with MDIOCSET. 70 * The configuration persists across opens and closes of the device; 71 * an MDIOCCLR must be used to reset a configuration. An attempt to 72 * MDIOCSET an already active unit will return EBUSY. 73 */ 74 75#define MDIOCATTACH _IOWR('m', 0, struct md_ioctl) /* attach disk */ 76#define MDIOCDETACH _IOWR('m', 1, struct md_ioctl) /* detach disk */ 77#define MDIOCQUERY _IOWR('m', 2, struct md_ioctl) /* query status */ 78#define MDIOCRESIZE _IOWR('m', 4, struct md_ioctl) /* resize disk */ 79 80#define MD_CLUSTER 0x01 /* Don't cluster */ 81#define MD_RESERVE 0x02 /* Pre-reserve swap */ 82#define MD_AUTOUNIT 0x04 /* Assign next free unit */ 83#define MD_READONLY 0x08 /* Readonly mode */ 84#define MD_COMPRESS 0x10 /* Compression mode */ 85#define MD_FORCE 0x20 /* Don't try to prevent foot-shooting */ 86#define MD_ASYNC 0x40 /* Asynchronous mode */ 87#define MD_VERIFY 0x80 /* Open file with O_VERIFY (vnode only) */ 88#define MD_CACHE 0x100 /* Cache vnode data */ 89#define MD_MUSTDEALLOC 0x200 /* BIO_DELETE only if dealloc is available */ 90 91#endif /* _SYS_MDIOCTL_H_*/ 92