lib/libspl/include/sys/dktp/fdisk.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or https://opensource.org/licenses/CDDL-1.0.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26 /*      Copyright (c) 1984, 1986, 1987, 1988 AT&T       */
  27 /*        All Rights Reserved   */
  28
  29
  30 #ifndef _SYS_DKTP_FDISK_H
  31 #define _SYS_DKTP_FDISK_H
  32
  33 #ifdef  __cplusplus
  34 extern "C" {
  35 #endif
  36
  37 /*
  38  * fdisk.h
  39  * This file defines the structure of physical disk sector 0 for use on
  40  * AT386 systems.  The format of this sector is constrained by the ROM
  41  * BIOS and MS-DOS conventions.
  42  * Note that this block does not define the partitions used by the unix
  43  * driver.  The unix partitions are obtained from the VTOC.
  44  */
  45
  46 /*
  47  * the MAX values are the maximum usable values for BIOS chs values
  48  * The MAX_CYL value of 1022 is the maximum usable value
  49  *   the value of 1023 is a fence value,
  50  *   indicating no CHS geometry exists for the corresponding LBA value.
  51  * HEAD range [ 0 .. MAX_HEAD ], so number of heads is (MAX_HEAD + 1)
  52  * SECT range [ 1 .. MAX_SECT ], so number of sectors is (MAX_SECT)
  53  */
  54 #define MAX_SECT        (63)
  55 #define MAX_CYL         (1022)
  56 #define MAX_HEAD        (254)
  57
  58 /*
  59  * BOOTSZ was reduced from 446 to 440 bytes to NOT overwrite the Windows
  60  * Vista DISKID. Otherwise Vista won't boot from Solaris GRUB in a dual-boot
  61  * setup.
  62  * The actual size of mboot code is 425 bytes while that of GRUB stage1 is
  63  * 423 bytes. So this changes does not harm them.
  64  */
  65 #define BOOTSZ          440     /* size of boot code in master boot block */
  66 #define FD_NUMPART      4       /* number of 'partitions' in fdisk table */
  67 #define MBB_MAGIC       0xAA55  /* magic number for mboot.signature */
  68 #define DEFAULT_INTLV   4       /* default interleave for testing tracks */
  69 #define MINPSIZE        4       /* minimum number of cylinders in a partition */
  70 #define TSTPAT          0xE5    /* test pattern for verifying disk */
  71
  72 /*
  73  * structure to hold the fdisk partition table
  74  */
  75 struct ipart {
  76         unsigned char bootid;   /* bootable or not */
  77         unsigned char beghead;  /* beginning head, sector, cylinder */
  78         unsigned char begsect;  /* begcyl is a 10-bit number. High 2 bits */
  79         unsigned char begcyl;   /*      are in begsect. */
  80         unsigned char systid;   /* OS type */
  81         unsigned char endhead;  /* ending head, sector, cylinder */
  82         unsigned char endsect;  /* endcyl is a 10-bit number.  High 2 bits */
  83         unsigned char endcyl;   /*      are in endsect. */
  84         uint32_t relsect;       /* first sector relative to start of disk */
  85         uint32_t numsect;       /* number of sectors in partition */
  86 };
  87 /*
  88  * Values for bootid.
  89  */
  90 #define NOTACTIVE       0
  91 #define ACTIVE          128
  92 /*
  93  * Values for systid.
  94  */
  95 #define UNUSED          0       /* Empty Partition */
  96 #define DOSOS12         1       /* DOS partition, 12-bit FAT */
  97 #define PCIXOS          2       /* PC/IX partition */
  98 #define DOSOS16         4       /* DOS partition, 16-bit FAT */
  99 #define EXTDOS          5       /* EXT-DOS partition */
 100 #define DOSHUGE         6       /* Huge DOS partition  > 32MB */
 101 #define FDISK_IFS       7       /* Installable File System (IFS): HPFS & NTFS */
 102 #define FDISK_AIXBOOT   8       /* AIX Boot */
 103 #define FDISK_AIXDATA   9       /* AIX Data */
 104 #define FDISK_OS2BOOT   10      /* OS/2 Boot Manager */
 105 #define FDISK_WINDOWS   11      /* Windows 95 FAT32 (up to 2047GB) */
 106 #define FDISK_EXT_WIN   12      /* Windows 95 FAT32 (extended-INT13) */
 107 #define FDISK_FAT95     14      /* DOS 16-bit FAT, LBA-mapped */
 108 #define FDISK_EXTLBA    15      /* Extended partition, LBA-mapped */
 109 #define DIAGPART        18      /* Diagnostic boot partition (OS independent) */
 110 #define FDISK_LINUX     65      /* Linux */
 111 #define FDISK_LINUXDSWAP        66      /* Linux swap (sharing disk w/ DRDOS) */
 112 #define FDISK_LINUXDNAT 67      /* Linux native (sharing disk with DRDOS) */
 113 #define FDISK_CPM       82      /* CP/M */
 114 #define DOSDATA         86      /* DOS data partition */
 115 #define OTHEROS         98      /* part. type for appl. (DB?) needs */
 116                                 /* raw partition.  ID was 0 but conflicted */
 117                                 /* with DOS 3.3 fdisk    */
 118 #define UNIXOS          99      /* UNIX V.x partition */
 119 #define FDISK_NOVELL2   100     /* Novell Netware 286 */
 120 #define FDISK_NOVELL3   101     /* Novell Netware 3.x and later */
 121 #define FDISK_QNX4      119     /* QNX 4.x */
 122 #define FDISK_QNX42     120     /* QNX 4.x 2nd part */
 123 #define FDISK_QNX43     121     /* QNX 4.x 3rd part */
 124 #define SUNIXOS         130     /* Solaris UNIX partition */
 125 #define FDISK_LINUXNAT  131     /* Linux native */
 126 #define FDISK_NTFSVOL1  134     /* NTFS volume set 1 */
 127 #define FDISK_NTFSVOL2  135     /* NTFS volume set 2 */
 128 #define FDISK_BSD       165     /* BSD/386, 386BSD, NetBSD, FreeBSD, OpenBSD */
 129 #define FDISK_NEXTSTEP  167     /* NeXTSTEP */
 130 #define FDISK_BSDIFS    183     /* BSDI file system */
 131 #define FDISK_BSDISWAP  184     /* BSDI swap */
 132 #define X86BOOT         190     /* x86 Solaris boot partition */
 133 #define SUNIXOS2        191     /* Solaris UNIX partition */
 134 #define EFI_PMBR        238     /* EFI PMBR */
 135 #define EFI_FS          239     /* EFI File System (System Partition) */
 136 #define MAXDOS          65535L  /* max size (sectors) for DOS partition */
 137
 138 /*
 139  * structure to hold master boot block in physical sector 0 of the disk.
 140  * Note that partitions stuff can't be directly included in the structure
 141  * because of lameo '386 compiler alignment design.
 142  * Alignment issues also force us to have 2 16bit entities for a single
 143  * 32bit win_volserno. It is not used anywhere anyway.
 144  */
 145
 146 struct mboot {  /* master boot block */
 147         char    bootinst[BOOTSZ];
 148         uint16_t win_volserno_lo;
 149         uint16_t win_volserno_hi;
 150         uint16_t reserved;
 151         char    parts[FD_NUMPART * sizeof (struct ipart)];
 152         ushort_t signature;
 153 };
 154
 155 #if defined(__i386) || defined(__amd64)
 156
 157 /* Byte offset of the start of the partition table within the sector */
 158 #define FDISK_PART_TABLE_START  446
 159
 160 /* Maximum number of valid partitions assumed as 32 */
 161 #define MAX_EXT_PARTS   32
 162
 163 #else
 164
 165 #define MAX_EXT_PARTS   0
 166
 167 #endif  /* if defined(__i386) || defined(__amd64) */
 168
 169 #ifdef  __cplusplus
 170 }
 171 #endif
 172
 173 #endif  /* _SYS_DKTP_FDISK_H */