root / lab4 / .minix-src / include / i386 / disklabel.h @ 13
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1 | 13 | up20180614 | /* $NetBSD: disklabel.h,v 1.16 2011/08/30 12:39:55 bouyer Exp $ */
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3 | /*
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4 | * Copyright (c) 1994 Christopher G. Demetriou
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5 | * All rights reserved.
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6 | *
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7 | * Redistribution and use in source and binary forms, with or without
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8 | * modification, are permitted provided that the following conditions
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9 | * are met:
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10 | * 1. Redistributions of source code must retain the above copyright
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11 | * notice, this list of conditions and the following disclaimer.
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12 | * 2. Redistributions in binary form must reproduce the above copyright
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13 | * notice, this list of conditions and the following disclaimer in the
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14 | * documentation and/or other materials provided with the distribution.
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15 | * 3. All advertising materials mentioning features or use of this software
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16 | * must display the following acknowledgement:
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17 | * This product includes software developed by Christopher G. Demetriou.
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18 | * 4. The name of the author may not be used to endorse or promote products
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19 | * derived from this software without specific prior written permission
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20 | *
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21 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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22 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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23 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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24 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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25 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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26 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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27 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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28 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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29 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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30 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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31 | */
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32 | |||
33 | #ifndef _I386_DISKLABEL_H_
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34 | #define _I386_DISKLABEL_H_
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35 | |||
36 | #define LABELUSESMBR 1 /* use MBR partitionning */ |
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37 | #define LABELSECTOR 1 /* sector containing label */ |
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38 | #define LABELOFFSET 0 /* offset of label in sector */ |
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39 | #define MAXPARTITIONS 16 /* number of partitions */ |
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40 | #define OLDMAXPARTITIONS 8 /* number of partitions before 1.6 */ |
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41 | #define RAW_PART 3 /* raw partition: XX?d (XXX) */ |
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42 | |||
43 | /*
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44 | * We use the highest bit of the minor number for the partition number.
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45 | * This maintains backward compatibility with device nodes created before
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46 | * MAXPARTITIONS was increased.
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47 | */
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48 | #define __I386_MAXDISKS ((1 << 20) / MAXPARTITIONS) |
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49 | #define DISKUNIT(dev) ((minor(dev) / OLDMAXPARTITIONS) % __I386_MAXDISKS)
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50 | #define DISKPART(dev) ((minor(dev) % OLDMAXPARTITIONS) + \
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51 | ((minor(dev) / (__I386_MAXDISKS * OLDMAXPARTITIONS)) * OLDMAXPARTITIONS)) |
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52 | #define DISKMINOR(unit, part) \
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53 | (((unit) * OLDMAXPARTITIONS) + ((part) % OLDMAXPARTITIONS) + \ |
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54 | ((part) / OLDMAXPARTITIONS) * (__I386_MAXDISKS * OLDMAXPARTITIONS)) |
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55 | |||
56 | /* Pull in MBR partition definitions. */
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57 | #if HAVE_NBTOOL_CONFIG_H
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58 | #include <nbinclude/sys/bootblock.h> |
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59 | #else
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60 | #include <sys/bootblock.h> |
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61 | #endif /* HAVE_NBTOOL_CONFIG_H */ |
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62 | |||
63 | #ifndef __ASSEMBLER__
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64 | #if HAVE_NBTOOL_CONFIG_H
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65 | #include <nbinclude/sys/dkbad.h> |
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66 | #else
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67 | #include <sys/dkbad.h> |
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68 | #endif /* HAVE_NBTOOL_CONFIG_H */ |
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69 | struct cpu_disklabel {
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70 | #define __HAVE_DISKLABEL_DKBAD
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71 | struct dkbad bad;
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72 | }; |
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73 | #endif
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74 | |||
75 | #endif /* _I386_DISKLABEL_H_ */ |