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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (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 (c) 1996, 1998, 1999 by Sun Microsystems, Inc.
* All rights reserved.
*/
#ifndef _MKFS_PCFS_H
#define _MKFS_PCFS_H
#pragma ident "%Z%%M% %I% %E% SMI"
#ifdef __cplusplus
extern "C" {
#endif
#define BPSEC 512 /* Assumed # of bytes per sector */
#define OPCODE1 0xE9
#define OPCODE2 0xEB
#define BOOTSECSIG 0xAA55
/*
* Offset (in bytes) from address of boot sector to where we put
* the backup copy of that sector. (FAT32 only)
*/
#define BKUP_BOOTSECT_OFFSET 0xC00
#define uppercase(c) ((c) >= 'a' && (c) <= 'z' ? (c) - 'a' + 'A' : (c))
#define FAT12_TYPE_STRING "FAT12 "
#define FAT16_TYPE_STRING "FAT16 "
#define FAT32_TYPE_STRING "FAT32 "
#define FAT12_ENTSPERSECT 341
#define FAT16_ENTSPERSECT 256
#define FAT32_ENTSPERSECT 128
#ifndef SUNIXOSBOOT
#define SUNIXOSBOOT 190 /* Solaris UNIX boot partition */
#endif
/*
* A macro implementing a ceiling function for integer divides.
*/
#define idivceil(dvend, dvsor) \
((dvend)/(dvsor) + (((dvend)%(dvsor) == 0) ? 0 : 1))
/*
* Return values for the seek_XXX functions
*/
#define PART_NOT_FOUND 0
#define PART_FOUND 1
/*
* MS-DOS Disk layout:
*
* ---------------------
* | Boot sector |
* |-------------------|
* | Reserved area |
* |-------------------|
* | FAT #1 |
* |-------------------|
* | FAT #2 |
* |-------------------|
* | Root directory |
* |-------------------|
* | |
* | File area |
* |___________________|
*/
#ifdef i386
#pragma pack(1)
#endif
struct _orig_bios_param_blk {
uint16_t bytes_sector;
uchar_t sectors_per_cluster;
uint16_t resv_sectors;
uchar_t num_fats;
uint16_t num_root_entries;
uint16_t sectors_in_volume;
uchar_t media;
uint16_t sectors_per_fat;
uint16_t sectors_per_track;
uint16_t heads;
uint32_t hidden_sectors;
uint32_t sectors_in_logical_volume;
};
#ifdef i386
#pragma pack()
#endif
#ifdef i386
#pragma pack(1)
#endif
struct _bpb32_extensions {
uint32_t big_sectors_per_fat;
uint16_t ext_flags;
uchar_t fs_vers_lo;
uchar_t fs_vers_hi;
uint32_t root_dir_clust;
uint16_t fsinfosec;
uint16_t backupboot;
uint16_t reserved[6];
};
#ifdef i386
#pragma pack()
#endif
#ifdef i386
#pragma pack(1)
#endif
struct _bpb_extensions {
uchar_t phys_drive_num;
uchar_t reserved;
uchar_t ext_signature;
uint32_t volume_id;
uchar_t volume_label[11];
uchar_t type[8];
};
#ifdef i386
#pragma pack()
#endif
#ifdef i386
#pragma pack(1)
#endif
struct _sun_bpb_extensions {
uint16_t bs_offset_high;
uint16_t bs_offset_low;
};
#ifdef i386
#pragma pack()
#endif
/*
* bpb_t is a conglomeration of all the fields a bpb can have. Every
* bpb will have the orig_bios struct, but only FAT32's will have bpb32,
* and only Solaris boot diskettes will have the sunbpb structure.
*/
typedef struct _bios_param_blk {
struct _orig_bios_param_blk bpb;
struct _bpb32_extensions bpb32;
struct _bpb_extensions ebpb;
struct _sun_bpb_extensions sunbpb;
} bpb_t;
#ifdef i386
#pragma pack(1)
struct _bpb_head {
uchar_t bs_jump_code[3];
uchar_t bs_oem_name[8];
struct _orig_bios_param_blk bs_bpb;
};
#pragma pack()
#pragma pack(1)
struct _boot_sector {
struct _bpb_head bs_front;
struct _bpb_extensions bs_ebpb;
struct _sun_bpb_extensions bs_sebpb;
uchar_t bs_bootstrap[444];
uchar_t bs_signature[2];
};
#pragma pack()
#pragma pack(1)
struct _boot_sector32 {
struct _bpb_head bs_front;
struct _bpb32_extensions bs_bpb32;
struct _bpb_extensions bs_ebpb;
uchar_t bs_bootstrap[420];
uchar_t bs_signature[2];
};
#pragma pack()
#else
#define ORIG_BPB_START_INDEX 8 /* index into filler field */
#define EXT_BPB_START_INDEX 33 /* index into filler field */
#define BPB_32_START_INDEX 33 /* index into filler field */
#define EXT_BPB_32_START_INDEX 61 /* index into filler field */
struct _boot_sector {
uchar_t bs_jump_code[3];
uchar_t bs_filler[59];
uchar_t bs_sun_bpb[4];
uchar_t bs_bootstrap[444];
uchar_t bs_signature[2];
};
struct _boot_sector32 {
uchar_t bs_jump_code[3];
uchar_t bs_filler[87];
uchar_t bs_bootstrap[420];
uchar_t bs_signature[2];
};
#endif
typedef union _ubso {
struct _boot_sector bs;
struct _boot_sector32 bs32;
struct mboot mb;
uchar_t buf[BPSEC];
} boot_sector_t;
#ifdef __cplusplus
}
#endif
#endif /* _MKFS_PCFS_H */
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