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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.
*/
/*
Copyright 1988, 1989 by Intel Corporation, Santa Clara, California.
All Rights Reserved
Permission to use, copy, modify, and distribute this software and
its documentation for any purpose and without fee is hereby
granted, provided that the above copyright notice appears in all
copies and that both the copyright notice and this permission notice
appear in supporting documentation, and that the name of Intel
not be used in advertising or publicity pertaining to distribution
of the software without specific, written prior permission.
INTEL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
IN NO EVENT SHALL INTEL BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*
* disk.h
*/
#ifndef _DISK_H_
#define _DISK_H_
/* Grab the public part. */
#include <mach/machine/disk.h>
#define MAX_ALTENTS 253 /* Maximum # of slots for alts */
/* allowed for in the table. */
#define ALT_SANITY 0xdeadbeef /* magic # to validate alt table */
struct alt_table {
u_short alt_used; /* # of alternates already assigned */
u_short alt_reserved; /* # of alternates reserved on disk */
long alt_base; /* 1st sector (abs) of the alt area */
long alt_bad[MAX_ALTENTS]; /* list of bad sectors/tracks */
};
struct alt_info { /* table length should be multiple of 512 */
long alt_sanity; /* to validate correctness */
u_short alt_version; /* to corroborate vintage */
u_short alt_pad; /* padding for alignment */
struct alt_table alt_trk; /* bad track table */
struct alt_table alt_sec; /* bad sector table */
};
typedef struct alt_info altinfo_t;
#define V_NUMPAR 16 /* maximum number of partitions */
#define VTOC_SANE 0x600DDEEE /* Indicates a sane VTOC */
#define PDLOCATION 29 /* location of VTOC */
#define BAD_BLK 0x80 /* needed for V_VERIFY */
/* BAD_BLK moved from old hdreg.h */
#define HDPDLOC 29 /* location of pdinfo/vtoc */
#define LBLLOC 1 /* label block for xxxbsd */
/* Partition permission flags */
#define V_OPEN 0x100 /* Partition open (for driver use) */
#define V_VALID 0x200 /* Partition is valid to use */
/* Sanity word for the physical description area */
#define VALID_PD 0xCA5E600D
struct localpartition {
u_int p_flag; /*permision flags*/
long p_start; /*physical start sector no of partition*/
long p_size; /*# of physical sectors in partition*/
};
typedef struct localpartition localpartition_t;
struct evtoc {
u_int fill0[6];
u_int cyls; /*number of cylinders per drive*/
u_int tracks; /*number tracks per cylinder*/
u_int sectors; /*number sectors per track*/
u_int fill1[13];
u_int version; /*layout version*/
u_int alt_ptr; /*byte offset of alternates table*/
u_short alt_len; /*byte length of alternates table*/
u_int sanity; /*to verify vtoc sanity*/
u_int xcyls; /*number of cylinders per drive*/
u_int xtracks; /*number tracks per cylinder*/
u_int xsectors; /*number sectors per track*/
u_short nparts; /*number of partitions*/
u_short fill2; /*pad for 286 compiler*/
char label[40];
struct localpartition part[V_NUMPAR];/*partition headers*/
char fill[512-352];
};
union io_arg {
struct {
u_short ncyl; /* number of cylinders on drive */
u_char nhead; /* number of heads/cyl */
u_char nsec; /* number of sectors/track */
u_short secsiz; /* number of bytes/sector */
} ia_cd; /* used for Configure Drive cmd */
struct {
u_short flags; /* flags (see below) */
long bad_sector; /* absolute sector number */
long new_sector; /* RETURNED alternate sect assigned */
} ia_abs; /* used for Add Bad Sector cmd */
struct {
u_short start_trk; /* first track # */
u_short num_trks; /* number of tracks to format */
u_short intlv; /* interleave factor */
} ia_fmt; /* used for Format Tracks cmd */
struct {
u_short start_trk; /* first track */
char *intlv_tbl; /* interleave table */
} ia_xfmt; /* used for the V_XFORMAT ioctl */
};
#define BOOTSZ 446 /* size of boot code in master boot block */
#define FD_NUMPART 4 /* number of 'partitions' in fdisk table */
#define ACTIVE 128 /* indicator of active partition */
#define BOOT_MAGIC 0xAA55 /* signature of the boot record */
#define UNIXOS 99 /* UNIX partition */
#define BSDOS 165
#define LINUXSWAP 130
#define LINUXOS 131
extern int OS; /* what partition we came from */
/*
* structure to hold the fdisk partition table
*/
struct ipart {
u_char bootid; /* bootable or not */
u_char beghead; /* beginning head, sector, cylinder */
u_char begsect; /* begcyl is a 10-bit number. High 2 bits */
u_char begcyl; /* are in begsect. */
u_char systid; /* OS type */
u_char endhead; /* ending head, sector, cylinder */
u_char endsect; /* endcyl is a 10-bit number. High 2 bits */
u_char endcyl; /* are in endsect. */
long relsect; /* first sector relative to start of disk */
long numsect; /* number of sectors in 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.
*/
struct mboot { /* master boot block */
char bootinst[BOOTSZ];
char parts[FD_NUMPART * sizeof(struct ipart)];
u_short signature;
};
#endif /* _DISK_H_ */
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