#ifndef _FS_PT_LDM_H_#define _FS_PT_LDM_H_/* * ldm - Part of the Linux-NTFS project. * * Copyright (C) 2001 Richard Russon <ldm@flatcap.org> * Copyright (C) 2001 Anton Altaparmakov <antona@users.sf.net> * * Documentation is available at http://linux-ntfs.sf.net/ldm * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the Free * Software Foundation; either version 2 of the License, or (at your option) * any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program (in the main directory of the Linux-NTFS source * in the file COPYING); if not, write to the Free Software Foundation, * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */#include <linux/types.h>#include <asm/unaligned.h>#include <asm/byteorder.h>#include <linux/genhd.h>/* Borrowed from kernel.h. */#define LDM_PREFIX	"LDM: "	   /* Prefix our error messages with this. */#define LDM_CRIT	KERN_CRIT	LDM_PREFIX /* critical conditions */#define LDM_ERR		KERN_ERR	LDM_PREFIX /* error conditions */#define LDM_DEBUG	KERN_DEBUG	LDM_PREFIX /* debug-level messages *//* Magic numbers in CPU format. */#define MAGIC_VMDB	0x564D4442		/* VMDB */#define MAGIC_VBLK	0x56424C4B		/* VBLK */#define MAGIC_PRIVHEAD	0x5052495648454144	/* PRIVHEAD */#define MAGIC_TOCBLOCK	0x544F43424C4F434B	/* TOCBLOCK *//* The defined vblk types. */#define VBLK_COMP		0x32		/* Component */#define VBLK_PART		0x33		/* Partition */#define VBLK_DSK1		0x34		/* Disk */#define VBLK_DSK2		0x44		/* Disk */#define VBLK_DGR1		0x35		/* Disk Group */#define VBLK_DGR2		0x45		/* Disk Group */#define VBLK_VOLU		0x51		/* Volume *//* Other constants. */#define LDM_BLOCKSIZE		1024		/* Size of block in bytes. */#define LDM_DB_SIZE		2048		/* Size in sectors (= 1MiB). */#define LDM_FIRST_PART_OFFSET	4		/* Add this to first_part_minor						   to get to the first data						   partition device minor. */#define OFF_PRIVHEAD1		3		/* Offset of the first privhead						   relative to the start of the						   device in units of						   LDM_BLOCKSIZE. *//* Offsets to structures within the LDM Database in units of LDM_BLOCKSIZE. */#define OFF_PRIVHEAD2		928		/* Backup private headers. */#define OFF_PRIVHEAD3		1023#define OFF_TOCBLOCK1		0		/* Tables of contents. */#define OFF_TOCBLOCK2		1#define OFF_TOCBLOCK3		1022#define OFF_TOCBLOCK4		1023#define OFF_VMDB		8		/* List of partitions. */#define OFF_VBLK		9#define WIN2K_DYNAMIC_PARTITION		0x42	/* Formerly SFS (Landis). */#define WIN2K_EXTENDED_PARTITION	0x05	/* A standard extended						   partition. */#define TOC_BITMAP1		"config"	/* Names of the two defined */#define TOC_BITMAP2		"log"		/* bitmaps in the TOCBLOCK. *//* Most numbers we deal with are big-endian and won't be aligned. */#define BE16(x)			((u16)be16_to_cpu(get_unaligned((u16*)(x))))#define BE32(x)			((u32)be32_to_cpu(get_unaligned((u32*)(x))))#define BE64(x)			((u64)be64_to_cpu(get_unaligned((u64*)(x))))/* Borrowed from msdos.c. */#define SYS_IND(p)		(get_unaligned(&(p)->sys_ind))#define NR_SECTS(p)		({ __typeof__((p)->nr_sects) __a =	\					get_unaligned(&(p)->nr_sects);	\					le32_to_cpu(__a);		\				})#define START_SECT(p)		({ __typeof__((p)->start_sect) __a =	\					get_unaligned(&(p)->start_sect);\					le32_to_cpu(__a);		\				})/* In memory LDM database structures. */#define DISK_ID_SIZE		64	/* Size in bytes. */struct ldmdisk {	u64	obj_id;	u8	disk_id[DISK_ID_SIZE];};struct privhead	{			/* Offsets and sizes are in sectors. */	u16	ver_major;	u16	ver_minor;	u64	logical_disk_start;	u64	logical_disk_size;	u64	config_start;	u64	config_size;	u8	disk_id[DISK_ID_SIZE];};struct tocblock {			/* We have exactly two bitmaps. */	u8	bitmap1_name[16];	u64	bitmap1_start;	u64	bitmap1_size;	/*u64	bitmap1_flags;*/	u8	bitmap2_name[16];	u64	bitmap2_start;	u64	bitmap2_size;	/*u64	bitmap2_flags;*/};struct vmdb {	u16	ver_major;	u16	ver_minor;	u32	vblk_size;	u32	vblk_offset;	u32	last_vblk_seq;};struct vblk {	u8	name[64];	u8	vblk_type;	u64	obj_id;	u64	disk_id;	u64	start_sector;	u64	num_sectors;};struct ldm_part {	struct list_head part_list;	unsigned long start;	unsigned long size;};int ldm_partition(struct gendisk *hd, struct block_device *bdev,		unsigned long first_sector, int first_part_minor);#endif /* _FS_PT_LDM_H_ */