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[/] [or1k/] [tags/] [LINUX_2_4_26_OR32/] [linux/] [linux-2.4/] [fs/] [partitions/] [ldm.h] - Rev 1765
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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_ */