home *** CD-ROM | disk | FTP | other *** search
- /*
- * Copyright (c) 1992, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This software was developed by the Computer Systems Engineering group
- * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
- * contributed to Berkeley.
- *
- * All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Lawrence Berkeley Laboratory.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)disk.h 8.1 (Berkeley) 6/2/93
- *
- * from: $Header: disk.h,v 1.5 92/11/19 04:33:03 torek Exp $ (LBL)
- */
-
- /*
- * Disk device structures.
- *
- * Note that this is only a preliminary outline. The final disk structures
- * may be somewhat different.
- */
- struct buf;
-
- struct dkdevice {
- struct device dk_dev; /* base device */
- struct dkdevice *dk_next; /* list of disks; not yet used */
- int dk_bps; /* xfer rate: bytes per second */
- int dk_bopenmask; /* block devices open */
- int dk_copenmask; /* character devices open */
- int dk_openmask; /* composite (bopen|copen) */
- int dk_state; /* label state ### */
- int dk_blkshift; /* shift to convert DEV_BSIZE to blks */
- int dk_byteshift; /* shift to convert bytes to blks */
- struct dkdriver *dk_driver; /* pointer to driver */
- daddr_t dk_labelsector; /* sector containing label */
- struct disklabel dk_label; /* label */
- };
-
- struct dkdriver {
- void (*d_strategy) __P((struct buf *));
- #ifdef notyet
- int (*d_open) __P((dev_t dev, int ifmt, int, struct proc *));
- int (*d_close) __P((dev_t dev, int, int ifmt, struct proc *));
- int (*d_ioctl) __P((dev_t dev, int cmd, caddr_t data, int fflag,
- struct proc *));
- int (*d_dump) __P((dev_t));
- void (*d_start) __P((struct buf *, daddr_t));
- int (*d_mklabel) __P((struct dkdevice *));
- #endif
- };
-
- /* states */
- #define DK_CLOSED 0 /* drive is closed */
- #define DK_WANTOPEN 1 /* drive being opened */
- #define DK_WANTOPENRAW 2 /* drive being opened */
- #define DK_RDLABEL 3 /* label being read */
- #define DK_OPEN 4 /* label read, drive open */
- #define DK_OPENRAW 5 /* open without label */
-
- #ifdef DISKSORT_STATS
- /*
- * Stats from disksort().
- */
- struct disksort_stats {
- long ds_newhead; /* # new queue heads created */
- long ds_newtail; /* # new queue tails created */
- long ds_midfirst; /* # insertions into sort list */
- long ds_endfirst; /* # insertions at end of sort list */
- long ds_newsecond; /* # inversions (2nd lists) created */
- long ds_midsecond; /* # insertions into 2nd list */
- long ds_endsecond; /* # insertions at end of 2nd list */
- };
- #endif
-
- #ifdef KERNEL
- void disksort __P((struct buf *, struct buf *));
- char *readdisklabel __P((struct dkdevice *, int));
- int setdisklabel __P((struct dkdevice *, struct disklabel *));
- int writedisklabel __P((struct dkdevice *, int));
- int diskerr __P((struct dkdevice *, struct buf *, char *, int, int));
- #endif
-