| 1 | /* |
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| 2 | * Copyright (c) 1992-1998 Michael A. Cooper. |
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| 3 | * This software may be freely used and distributed provided it is not |
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| 4 | * sold for profit or used in part or in whole for commercial gain |
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| 5 | * without prior written agreement, and the author is credited |
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| 6 | * appropriately. |
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| 7 | */ |
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| 8 | |
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| 9 | /* |
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| 10 | * $Revision: 1.1.1.1 $ |
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| 11 | */ |
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| 12 | |
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| 13 | #ifndef __dospart_h__ |
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| 14 | #define __dospart_h__ |
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| 15 | |
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| 16 | /* |
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| 17 | * This stuff is from <sys/disklabel.h> in FreeBSD 2.2.6 |
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| 18 | */ |
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| 19 | #ifdef PC98 |
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| 20 | #define DOS_BB_SECTOR 0 /* DOS Boot Block relative sector */ |
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| 21 | #define DOS_LABEL_SECTOR 1 /* 0: 256b/s, 1: 512b/s */ |
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| 22 | #define DOS_PART_OFF 0 /* Partition offset */ |
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| 23 | #define DOS_NPARTS 16 /* # of DOS Partitions */ |
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| 24 | |
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| 25 | typedef struct { |
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| 26 | u_char dp_mid; |
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| 27 | /*#define DOSMID_386BSD (0x14|0x80) /* 386bsd|bootable */ |
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| 28 | u_char dp_sid; |
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| 29 | /*#define DOSSID_386BSD (0x44|0x80) /* 386bsd|active */ |
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| 30 | u_char dp_dum1; |
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| 31 | u_char dp_dum2; |
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| 32 | u_char dp_ipl_sct; |
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| 33 | u_char dp_ipl_head; |
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| 34 | u_short dp_ipl_cyl; |
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| 35 | u_char dp_ssect; /* starting sector */ |
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| 36 | u_char dp_shd; /* starting head */ |
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| 37 | u_short dp_scyl; /* starting cylinder */ |
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| 38 | u_char dp_esect; /* end sector */ |
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| 39 | u_char dp_ehd; /* end head */ |
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| 40 | u_short dp_ecyl; /* end cylinder */ |
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| 41 | u_char dp_name[16]; |
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| 42 | } DosPart_t; |
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| 43 | |
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| 44 | #else /* IBMPC */ |
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| 45 | #define DOS_BB_SECTOR 0 /* DOS boot block relative sector */ |
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| 46 | #define DOS_PART_SIZE 446 |
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| 47 | #define DOS_NPARTS 4 |
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| 48 | |
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| 49 | typedef struct { |
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| 50 | u_char dp_flags; /* bootstrap flags */ |
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| 51 | u_char dp_shd; /* starting head */ |
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| 52 | u_char dp_ssect; /* starting sector */ |
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| 53 | u_char dp_scyl; /* starting cylinder */ |
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| 54 | u_char dp_type; /* partititon type */ |
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| 55 | u_char dp_ehd; /* end head */ |
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| 56 | u_char dp_esect; /* end sector */ |
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| 57 | u_char dp_ecyl; /* end cylinder */ |
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| 58 | u_long dp_start; /* absolute starting sector number */ |
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| 59 | u_long dp_size; /* partition size in sectors */ |
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| 60 | } DosPart_t; |
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| 61 | #endif |
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| 62 | |
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| 63 | /* |
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| 64 | * Partition Types |
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| 65 | */ |
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| 66 | typedef struct { |
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| 67 | u_char Type; /* Value == dp_typ */ |
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| 68 | char *Desc; /* Description */ |
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| 69 | } DosPartType_t; |
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| 70 | |
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| 71 | #define DOS_ACTIVE 0x80 /* Is Active */ |
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| 72 | #define DOS_BOOT_MAGIC 0xAA55 /* Boot Magic signature */ |
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| 73 | |
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| 74 | #define MIN_SEC_SIZE 512 |
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| 75 | #define MAX_SEC_SIZE 2048 |
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| 76 | |
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| 77 | /* |
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| 78 | * Master Boot Record |
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| 79 | */ |
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| 80 | typedef struct { |
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| 81 | u_char Padding[2]; |
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| 82 | u_char BootInst[DOS_PART_SIZE]; |
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| 83 | DosPart_t Parts[DOS_NPARTS]; |
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| 84 | u_short Signature; |
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| 85 | /* Overflow allows us to read in large MBR's */ |
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| 86 | u_char Overflow[MAX_SEC_SIZE-MIN_SEC_SIZE]; |
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| 87 | } MBR_t; |
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| 88 | |
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| 89 | #endif /* __dospart_h__ */ |
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