sys/arch/i386/include/disklabel.h

   1 /*      $NetBSD: disklabel.h,v 1.16 2011/08/30 12:39:55 bouyer Exp $    */
   2
   3 /*
   4  * Copyright (c) 1994 Christopher G. Demetriou
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *      This product includes software developed by Christopher G. Demetriou.
  18  * 4. The name of the author may not be used to endorse or promote products
  19  *    derived from this software without specific prior written permission
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 #ifndef _I386_DISKLABEL_H_
  34 #define _I386_DISKLABEL_H_
  35
  36 #define LABELUSESMBR            1       /* use MBR partitionning */
  37 #define LABELSECTOR             1       /* sector containing label */
  38 #define LABELOFFSET             0       /* offset of label in sector */
  39 #define MAXPARTITIONS           16      /* number of partitions */
  40 #define OLDMAXPARTITIONS        8       /* number of partitions before 1.6 */
  41 #define RAW_PART                3       /* raw partition: XX?d (XXX) */
  42
  43 /*
  44  * We use the highest bit of the minor number for the partition number.
  45  * This maintains backward compatibility with device nodes created before
  46  * MAXPARTITIONS was increased.
  47  */
  48 #define __I386_MAXDISKS ((1 << 20) / MAXPARTITIONS)
  49 #define DISKUNIT(dev)   ((minor(dev) / OLDMAXPARTITIONS) % __I386_MAXDISKS)
  50 #define DISKPART(dev)   ((minor(dev) % OLDMAXPARTITIONS) + \
  51     ((minor(dev) / (__I386_MAXDISKS * OLDMAXPARTITIONS)) * OLDMAXPARTITIONS))
  52 #define DISKMINOR(unit, part) \
  53     (((unit) * OLDMAXPARTITIONS) + ((part) % OLDMAXPARTITIONS) + \
  54      ((part) / OLDMAXPARTITIONS) * (__I386_MAXDISKS * OLDMAXPARTITIONS))
  55
  56 /* Pull in MBR partition definitions. */
  57 #if HAVE_NBTOOL_CONFIG_H
  58 #include <nbinclude/sys/bootblock.h>
  59 #else
  60 #include <sys/bootblock.h>
  61 #endif /* HAVE_NBTOOL_CONFIG_H */
  62
  63 #ifndef __ASSEMBLER__
  64 #if HAVE_NBTOOL_CONFIG_H
  65 #include <nbinclude/sys/dkbad.h>
  66 #else
  67 #include <sys/dkbad.h>
  68 #endif /* HAVE_NBTOOL_CONFIG_H */
  69 struct cpu_disklabel {
  70 #define __HAVE_DISKLABEL_DKBAD
  71         struct dkbad bad;
  72 };
  73 #endif
  74
  75 #endif /* _I386_DISKLABEL_H_ */