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Diffstat (limited to 'sys/contrib/openzfs/lib/libspl/include/sys/dktp/fdisk.h')
| -rw-r--r-- | sys/contrib/openzfs/lib/libspl/include/sys/dktp/fdisk.h | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/sys/contrib/openzfs/lib/libspl/include/sys/dktp/fdisk.h b/sys/contrib/openzfs/lib/libspl/include/sys/dktp/fdisk.h new file mode 100644 index 000000000000..e90135f362e6 --- /dev/null +++ b/sys/contrib/openzfs/lib/libspl/include/sys/dktp/fdisk.h @@ -0,0 +1,173 @@ +/* + * CDDL HEADER START + * + * The contents of this file are subject to the terms of the + * Common Development and Distribution License (the "License"). + * You may not use this file except in compliance with the License. + * + * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE + * or http://www.opensolaris.org/os/licensing. + * See the License for the specific language governing permissions + * and limitations under the License. + * + * When distributing Covered Code, include this CDDL HEADER in each + * file and include the License file at usr/src/OPENSOLARIS.LICENSE. + * If applicable, add the following below this CDDL HEADER, with the + * fields enclosed by brackets "[]" replaced with your own identifying + * information: Portions Copyright [yyyy] [name of copyright owner] + * + * CDDL HEADER END + */ + +/* + * Copyright 2009 Sun Microsystems, Inc. All rights reserved. + * Use is subject to license terms. + */ +/* Copyright (c) 1984, 1986, 1987, 1988 AT&T */ +/* All Rights Reserved */ + + +#ifndef _SYS_DKTP_FDISK_H +#define _SYS_DKTP_FDISK_H + +#ifdef __cplusplus +extern "C" { +#endif + +/* + * fdisk.h + * This file defines the structure of physical disk sector 0 for use on + * AT386 systems. The format of this sector is constrained by the ROM + * BIOS and MS-DOS conventions. + * Note that this block does not define the partitions used by the unix + * driver. The unix partitions are obtained from the VTOC. + */ + +/* + * the MAX values are the maximum usable values for BIOS chs values + * The MAX_CYL value of 1022 is the maximum usable value + * the value of 1023 is a fence value, + * indicating no CHS geometry exists for the corresponding LBA value. + * HEAD range [ 0 .. MAX_HEAD ], so number of heads is (MAX_HEAD + 1) + * SECT range [ 1 .. MAX_SECT ], so number of sectors is (MAX_SECT) + */ +#define MAX_SECT (63) +#define MAX_CYL (1022) +#define MAX_HEAD (254) + +/* + * BOOTSZ was reduced from 446 to 440 bytes to NOT overwrite the Windows + * Vista DISKID. Otherwise Vista won't boot from Solaris GRUB in a dual-boot + * setup. + * The actual size of mboot code is 425 bytes while that of GRUB stage1 is + * 423 bytes. So this changes does not harm them. + */ +#define BOOTSZ 440 /* size of boot code in master boot block */ +#define FD_NUMPART 4 /* number of 'partitions' in fdisk table */ +#define MBB_MAGIC 0xAA55 /* magic number for mboot.signature */ +#define DEFAULT_INTLV 4 /* default interleave for testing tracks */ +#define MINPSIZE 4 /* minimum number of cylinders in a partition */ +#define TSTPAT 0xE5 /* test pattern for verifying disk */ + +/* + * structure to hold the fdisk partition table + */ +struct ipart { + unsigned char bootid; /* bootable or not */ + unsigned char beghead; /* beginning head, sector, cylinder */ + unsigned char begsect; /* begcyl is a 10-bit number. High 2 bits */ + unsigned char begcyl; /* are in begsect. */ + unsigned char systid; /* OS type */ + unsigned char endhead; /* ending head, sector, cylinder */ + unsigned char endsect; /* endcyl is a 10-bit number. High 2 bits */ + unsigned char endcyl; /* are in endsect. */ + uint32_t relsect; /* first sector relative to start of disk */ + uint32_t numsect; /* number of sectors in partition */ +}; +/* + * Values for bootid. + */ +#define NOTACTIVE 0 +#define ACTIVE 128 +/* + * Values for systid. + */ +#define UNUSED 0 /* Empty Partition */ +#define DOSOS12 1 /* DOS partition, 12-bit FAT */ +#define PCIXOS 2 /* PC/IX partition */ +#define DOSOS16 4 /* DOS partition, 16-bit FAT */ +#define EXTDOS 5 /* EXT-DOS partition */ +#define DOSHUGE 6 /* Huge DOS partition > 32MB */ +#define FDISK_IFS 7 /* Installable File System (IFS): HPFS & NTFS */ +#define FDISK_AIXBOOT 8 /* AIX Boot */ +#define FDISK_AIXDATA 9 /* AIX Data */ +#define FDISK_OS2BOOT 10 /* OS/2 Boot Manager */ +#define FDISK_WINDOWS 11 /* Windows 95 FAT32 (up to 2047GB) */ +#define FDISK_EXT_WIN 12 /* Windows 95 FAT32 (extended-INT13) */ +#define FDISK_FAT95 14 /* DOS 16-bit FAT, LBA-mapped */ +#define FDISK_EXTLBA 15 /* Extended partition, LBA-mapped */ +#define DIAGPART 18 /* Diagnostic boot partition (OS independent) */ +#define FDISK_LINUX 65 /* Linux */ +#define FDISK_LINUXDSWAP 66 /* Linux swap (sharing disk w/ DRDOS) */ +#define FDISK_LINUXDNAT 67 /* Linux native (sharing disk with DRDOS) */ +#define FDISK_CPM 82 /* CP/M */ +#define DOSDATA 86 /* DOS data partition */ +#define OTHEROS 98 /* part. type for appl. (DB?) needs */ + /* raw partition. ID was 0 but conflicted */ + /* with DOS 3.3 fdisk */ +#define UNIXOS 99 /* UNIX V.x partition */ +#define FDISK_NOVELL2 100 /* Novell Netware 286 */ +#define FDISK_NOVELL3 101 /* Novell Netware 3.x and later */ +#define FDISK_QNX4 119 /* QNX 4.x */ +#define FDISK_QNX42 120 /* QNX 4.x 2nd part */ +#define FDISK_QNX43 121 /* QNX 4.x 3rd part */ +#define SUNIXOS 130 /* Solaris UNIX partition */ +#define FDISK_LINUXNAT 131 /* Linux native */ +#define FDISK_NTFSVOL1 134 /* NTFS volume set 1 */ +#define FDISK_NTFSVOL2 135 /* NTFS volume set 2 */ +#define FDISK_BSD 165 /* BSD/386, 386BSD, NetBSD, FreeBSD, OpenBSD */ +#define FDISK_NEXTSTEP 167 /* NeXTSTEP */ +#define FDISK_BSDIFS 183 /* BSDI file system */ +#define FDISK_BSDISWAP 184 /* BSDI swap */ +#define X86BOOT 190 /* x86 Solaris boot partition */ +#define SUNIXOS2 191 /* Solaris UNIX partition */ +#define EFI_PMBR 238 /* EFI PMBR */ +#define EFI_FS 239 /* EFI File System (System Partition) */ +#define MAXDOS 65535L /* max size (sectors) for DOS partition */ + +/* + * structure to hold master boot block in physical sector 0 of the disk. + * Note that partitions stuff can't be directly included in the structure + * because of lameo '386 compiler alignment design. + * Alignment issues also force us to have 2 16bit entities for a single + * 32bit win_volserno. It is not used anywhere anyway. + */ + +struct mboot { /* master boot block */ + char bootinst[BOOTSZ]; + uint16_t win_volserno_lo; + uint16_t win_volserno_hi; + uint16_t reserved; + char parts[FD_NUMPART * sizeof (struct ipart)]; + ushort_t signature; +}; + +#if defined(__i386) || defined(__amd64) + +/* Byte offset of the start of the partition table within the sector */ +#define FDISK_PART_TABLE_START 446 + +/* Maximum number of valid partitions assumed as 32 */ +#define MAX_EXT_PARTS 32 + +#else + +#define MAX_EXT_PARTS 0 + +#endif /* if defined(__i386) || defined(__amd64) */ + +#ifdef __cplusplus +} +#endif + +#endif /* _SYS_DKTP_FDISK_H */ |