132 lines
4.4 KiB
C
132 lines
4.4 KiB
C
/* $NetBSD: mbr.h,v 1.21 2004/07/17 19:36:59 dsl Exp $ */
|
|
|
|
/*
|
|
* Copyright 1997, 1988 Piermont Information Systems Inc.
|
|
* All rights reserved.
|
|
*
|
|
* Written by Philip A. Nelson for Piermont Information Systems Inc.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed for the NetBSD Project by
|
|
* Piermont Information Systems Inc.
|
|
* 4. The name of Piermont Information Systems Inc. may not be used to endorse
|
|
* or promote products derived from this software without specific prior
|
|
* written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY PIERMONT INFORMATION SYSTEMS INC. ``AS IS''
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL PIERMONT INFORMATION SYSTEMS INC. BE
|
|
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
|
|
* THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
*/
|
|
|
|
#ifndef _MBR_H
|
|
#define _MBR_H
|
|
|
|
/*
|
|
* mbr.h -- definitions for reading, writing and editing DOS MBRs.
|
|
* Use by including from md.h on ports which use MBRs (i386, powerpc, arc)
|
|
* naming convention: dlxxxx => NetBSD disklabel, bxxxx => bios
|
|
*/
|
|
|
|
/* constants and defines */
|
|
|
|
#include <sys/bootblock.h>
|
|
|
|
/*
|
|
* XXX I (dsl) haven't the foggiest idea what the MBR extended chain
|
|
* looks like if the sector size isn't 512.
|
|
*/
|
|
#define MBR_SECSIZE 512
|
|
|
|
#define MBR_PUT_LSCYL(c) ((c) & 0xff)
|
|
#define MBR_PUT_MSCYLANDSEC(c,s) (((s) & 0x3f) | (((c) >> 2) & 0xc0))
|
|
|
|
typedef struct mbr_info_t mbr_info_t;
|
|
struct mbr_info_t {
|
|
struct mbr_sector mbr;
|
|
#ifdef BOOTSEL
|
|
struct mbr_bootsel mbrb; /* writeable for any mbr code */
|
|
uint oflags;
|
|
#endif
|
|
uint sector; /* where we read this from */
|
|
mbr_info_t *extended; /* next in extended partition list */
|
|
mbr_info_t *prev_ext; /* and back ptr */
|
|
const char *last_mounted[MBR_PART_COUNT];
|
|
/* only in first item... */
|
|
int opt; /* entry being edited */
|
|
uint install; /* start sector of install partition */
|
|
#ifdef BOOTSEL
|
|
uint bootsec; /* start sector of bootmenu default */
|
|
#endif
|
|
};
|
|
|
|
/* incore fdisk (mbr, bios) geometry */
|
|
int bcyl, bhead, bsec;
|
|
|
|
mbr_info_t mbr;
|
|
|
|
#ifdef BOOTSEL
|
|
struct mbr_bootsel *mbs;
|
|
|
|
/* sync with src/sbin/fdisk/fdisk.c */
|
|
#define DEFAULT_BOOTDIR "/usr/mdec"
|
|
#define DEFAULT_BOOTCODE "mbr"
|
|
#define DEFAULT_BOOTSELCODE "mbr_bootsel"
|
|
#define DEFAULT_BOOTEXTCODE "mbr_ext"
|
|
|
|
/* Scan values for the various keys we use, as returned by the BIOS */
|
|
#define SCAN_ENTER 0x1c
|
|
#define SCAN_F1 0x3b
|
|
#define SCAN_1 0x2
|
|
|
|
#endif /* BOOTSEL */
|
|
|
|
/* from mbr.c */
|
|
void set_fdisk_geom(void); /* edit incore BIOS geometry */
|
|
void disp_cur_geom(void);
|
|
int check_geom(void); /* primitive geometry sanity-check */
|
|
|
|
void disp_cur_part(struct mbr_partition *, int, int);
|
|
int edit_mbr(mbr_info_t *);
|
|
int partsoverlap(struct mbr_partition *, int, int);
|
|
|
|
/* from mbr.c */
|
|
|
|
int read_mbr(const char *, mbr_info_t *);
|
|
int write_mbr(const char *, mbr_info_t *, int);
|
|
int valid_mbr(struct mbr_sector *);
|
|
int guess_biosgeom_from_mbr(mbr_info_t *, int *, int *, int *);
|
|
int md_bios_info(char *);
|
|
void set_bios_geom(int, int, int);
|
|
int otherpart(int);
|
|
int ourpart(int);
|
|
const char *get_partname(int);
|
|
void edit_ptn_bounds(void);
|
|
#ifdef BOOTSEL
|
|
void disp_bootsel(void);
|
|
void edit_bootsel_entry(int);
|
|
void edit_bootsel_timeout(void);
|
|
void edit_bootsel_default_ptn(int);
|
|
void edit_bootsel_default_disk(int);
|
|
void configure_bootsel(void);
|
|
#endif
|
|
|
|
#endif
|