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/*
* Mach Operating System
* Copyright (c) 1991,1990,1989 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie Mellon
* the rights to redistribute these changes.
*/
/*
* File: rz_labels.h
* Author: Alessandro Forin, Carnegie Mellon University
* Date: 10/90
*
* Definitions of various vendor's disk label formats.
*/
/* modified by Kevin T. Van Maren for the unified partition code */
#ifndef _RZ_LABELS_H_
#define _RZ_LABELS_H_
/*
* This function looks for, and converts to BSD format
* a vendor's label. It is only called if we did not
* find a standard BSD label on the disk pack.
*/
extern boolean_t rz_vendor_label();
/*
* Definition of the DEC disk label,
* which is located (you guessed it)
* at the end of the 4.3 superblock.
*/
struct dec_partition_info {
unsigned int n_sectors; /* how big the partition is */
unsigned int offset; /* sector no. of start of part. */
};
typedef struct {
int magic;
# define DEC_LABEL_MAGIC 0x032957
int in_use;
struct dec_partition_info partitions[8];
} dec_label_t;
/*
* Physical location on disk.
* This is independent of the filesystem we use,
* although of course we'll be in trouble if we
* screwup the 4.3 SBLOCK..
*/
#define DEC_LABEL_BYTE_OFFSET ((2*8192)-sizeof(dec_label_t))
/*
* Definitions for the primary boot information
* This is common, cuz the prom knows it.
*/
typedef struct {
int pad[2];
unsigned int magic;
# define DEC_BOOT0_MAGIC 0x2757a
int mode;
unsigned int phys_base;
unsigned int virt_base;
unsigned int n_sectors;
unsigned int start_sector;
} dec_boot0_t;
typedef struct {
dec_boot0_t vax_boot;
/* BSD label still fits in pad */
char pad[0x1e0-sizeof(dec_boot0_t)];
unsigned long block_count;
unsigned long starting_lbn;
unsigned long flags;
unsigned long checksum; /* add cmpl-2 all but here */
} alpha_boot0_t;
/*
* Definition of the Omron disk label,
* which is located at sector 0. It
* _is_ sector 0, actually.
*/
struct omron_partition_info {
unsigned long offset;
unsigned long n_sectors;
};
typedef struct {
char packname[128]; /* in ascii */
char pad[512-(128+8*8+11*2+4)];
unsigned short badchk; /* checksum of bad track */
unsigned long maxblk; /* # of total logical blocks */
unsigned short dtype; /* disk drive type */
unsigned short ndisk; /* # of disk drives */
unsigned short ncyl; /* # of data cylinders */
unsigned short acyl; /* # of alternate cylinders */
unsigned short nhead; /* # of heads in this partition */
unsigned short nsect; /* # of 512 byte sectors per track */
unsigned short bhead; /* identifies proper label locations */
unsigned short ppart; /* physical partition # */
struct omron_partition_info
partitions[8];
unsigned short magic; /* identifies this label format */
# define OMRON_LABEL_MAGIC 0xdabe
unsigned short cksum; /* xor checksum of sector */
} omron_label_t;
/*
* Physical location on disk.
*/
#define OMRON_LABEL_BYTE_OFFSET 0
/*
* Definition of the i386AT disk label, which lives inside sector 0.
* This is the info the BIOS knows about, which we use for bootstrapping.
* It is common across all disks known to BIOS.
*/
struct bios_partition_info {
unsigned char bootid; /* bootable or not */
# define BIOS_BOOTABLE 128
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; /* filesystem type */
# define UNIXOS 99 /* GNU HURD? */
# define BSDOS 165 /* 386BSD */
# define LINUXSWAP 130
# define LINUXOS 131
# define DOS_EXTENDED 05 /* container for logical partitions */
# define HPFS 07 /* OS/2 Native */
# define OS_2_BOOT 10 /* OS/2 Boot Manager */
# define DOS_12 01 /* 12 bit FAT */
# define DOS_16_OLD 04 /* < 32MB */
# define DOS_16 06 /* >= 32MB (#4 not used anymore) */
/* these numbers can't be trusted because */
/* of newer, larger drives */
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. */
unsigned long offset;
unsigned long n_sectors;
};
typedef struct {
/* struct bios_partition_info bogus compiler alignes wrong
partitions[4];
*/
char partitions[4*sizeof(struct bios_partition_info)];
unsigned short magic;
# define BIOS_LABEL_MAGIC 0xaa55
} bios_label_t;
/*
* Physical location on disk.
*/
#define BIOS_LABEL_BYTE_OFFSET 446
/*
* Definitions for the primary boot information
* This _is_ block 0
*/
#define BIOS_BOOT0_SIZE BIOS_LABEL_BYTE_OFFSET
typedef struct {
char boot0[BIOS_BOOT0_SIZE]; /* boot code */
/* bios_label_t label; bogus compiler alignes wrong */
char label[sizeof(bios_label_t)];
} bios_boot0_t;
/* Moved from i386at/nhdreg.h */
#define PDLOCATION 29 /* VTOC sector */
/* these are the partition types that can contain sub-partitions */
/* enum types... */
#define DISKPART_NONE 0 /* smallest piece flag !?! */
#define DISKPART_DOS 1
#define DISKPART_BSD 2
#define DISKPART_VTOC 3
#define DISKPART_OMRON 4
#define DISKPART_DEC 5 /* VAX disks? */
#define DISKPART_UNKNOWN 99
/* for NEW partition code */
/* this is the basic partition structure. an array of these is
filled, with element 0 being the whole drive, element 1-n being
the n top-level partitions, followed by 0+ groups of 1+ sub-partitions. */
typedef struct diskpart {
short type; /* DISKPART_xxx (see above) */
short fsys; /* file system (if known) */
int nsubs; /* number of sub-slices */
struct diskpart *subs; /* pointer to the sub-partitions */
int start; /* relative to the start of the DRIVE */
int size; /* # sectors in this piece */
} diskpart;
int get_only_partition(void *driver_info, int (*bottom_read_fun)(),
struct diskpart *array, int array_size,
int disk_size, char *drive_name);
struct diskpart *lookup_part(struct diskpart *array, int dev_number);
#endif _RZ_LABELS_H_
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