ldm.h
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- /**
- * ldm - Part of the Linux-NTFS project.
- *
- * Copyright (C) 2001,2002 Richard Russon <ldm@flatcap.org>
- * Copyright (C) 2001 Anton Altaparmakov <aia21@cantab.net>
- * Copyright (C) 2001,2002 Jakob Kemi <jakob.kemi@telia.com>
- *
- * 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
- */
- #ifndef _FS_PT_LDM_H_
- #define _FS_PT_LDM_H_
- #include <linux/types.h>
- #include <linux/list.h>
- #include <linux/genhd.h>
- #include <linux/fs.h>
- #include <asm/unaligned.h>
- #include <asm/byteorder.h>
- struct parsed_partitions;
- /* 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_VOL5 0x51 /* Volume, version 5 */
- #define VBLK_CMP3 0x32 /* Component, version 3 */
- #define VBLK_PRT3 0x33 /* Partition, version 3 */
- #define VBLK_DSK3 0x34 /* Disk, version 3 */
- #define VBLK_DSK4 0x44 /* Disk, version 4 */
- #define VBLK_DGR3 0x35 /* Disk Group, version 3 */
- #define VBLK_DGR4 0x45 /* Disk Group, version 4 */
- /* vblk flags indicating extra information will be present */
- #define VBLK_FLAG_COMP_STRIPE 0x10
- #define VBLK_FLAG_PART_INDEX 0x08
- #define VBLK_FLAG_DGR3_IDS 0x08
- #define VBLK_FLAG_DGR4_IDS 0x08
- #define VBLK_FLAG_VOLU_ID1 0x08
- #define VBLK_FLAG_VOLU_ID2 0x20
- #define VBLK_FLAG_VOLU_SIZE 0x80
- #define VBLK_FLAG_VOLU_DRIVE 0x02
- /* size of a vblk's static parts */
- #define VBLK_SIZE_HEAD 16
- #define VBLK_SIZE_CMP3 22 /* Name and version */
- #define VBLK_SIZE_DGR3 12
- #define VBLK_SIZE_DGR4 44
- #define VBLK_SIZE_DSK3 12
- #define VBLK_SIZE_DSK4 45
- #define VBLK_SIZE_PRT3 28
- #define VBLK_SIZE_VOL5 59
- /* component types */
- #define COMP_STRIPE 0x01 /* Stripe-set */
- #define COMP_BASIC 0x02 /* Basic disk */
- #define COMP_RAID 0x03 /* Raid-set */
- /* Other constants. */
- #define LDM_DB_SIZE 2048 /* Size in sectors (= 1MiB). */
- #define OFF_PRIV1 6 /* Offset of the first privhead
- relative to the start of the
- device in sectors */
- /* Offsets to structures within the LDM Database in sectors. */
- #define OFF_PRIV2 1856 /* Backup private headers. */
- #define OFF_PRIV3 2047
- #define OFF_TOCB1 1 /* Tables of contents. */
- #define OFF_TOCB2 2
- #define OFF_TOCB3 2045
- #define OFF_TOCB4 2046
- #define OFF_VMDB 17 /* List of partitions. */
- #define WIN2K_DYNAMIC_PARTITION 0x42 /* Formerly SFS (Landis). */
- #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))
- struct frag { /* VBLK Fragment handling */
- struct list_head list;
- u32 group;
- u8 num; /* Total number of records */
- u8 rec; /* This is record number n */
- u8 map; /* Which portions are in use */
- u8 data[0];
- };
- /* In memory LDM database structures. */
- #define GUID_SIZE 16
- 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[GUID_SIZE];
- };
- struct tocblock { /* We have exactly two bitmaps. */
- u8 bitmap1_name[16];
- u64 bitmap1_start;
- u64 bitmap1_size;
- u8 bitmap2_name[16];
- u64 bitmap2_start;
- u64 bitmap2_size;
- };
- struct vmdb { /* VMDB: The database header */
- u16 ver_major;
- u16 ver_minor;
- u32 vblk_size;
- u32 vblk_offset;
- u32 last_vblk_seq;
- };
- struct vblk_comp { /* VBLK Component */
- u8 state[16];
- u64 parent_id;
- u8 type;
- u8 children;
- u16 chunksize;
- };
- struct vblk_dgrp { /* VBLK Disk Group */
- u8 disk_id[64];
- };
- struct vblk_disk { /* VBLK Disk */
- u8 disk_id[GUID_SIZE];
- u8 alt_name[128];
- };
- struct vblk_part { /* VBLK Partition */
- u64 start;
- u64 size; /* start, size and vol_off in sectors */
- u64 volume_offset;
- u64 parent_id;
- u64 disk_id;
- u8 partnum;
- };
- struct vblk_volu { /* VBLK Volume */
- u8 volume_type[16];
- u8 volume_state[16];
- u8 guid[16];
- u8 drive_hint[4];
- u64 size;
- u8 partition_type;
- };
- struct vblk_head { /* VBLK standard header */
- u32 group;
- u16 rec;
- u16 nrec;
- };
- struct vblk { /* Generalised VBLK */
- u8 name[64];
- u64 obj_id;
- u32 sequence;
- u8 flags;
- u8 type;
- union {
- struct vblk_comp comp;
- struct vblk_dgrp dgrp;
- struct vblk_disk disk;
- struct vblk_part part;
- struct vblk_volu volu;
- } vblk;
- struct list_head list;
- };
- struct ldmdb { /* Cache of the database */
- struct privhead ph;
- struct tocblock toc;
- struct vmdb vm;
- struct list_head v_dgrp;
- struct list_head v_disk;
- struct list_head v_volu;
- struct list_head v_comp;
- struct list_head v_part;
- };
- int ldm_partition (struct gendisk *hd, struct block_device *bdev,
- unsigned long first_sector, int first_minor);
- #endif /* _FS_PT_LDM_H_ */