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authorAl Viro <viro@zeniv.linux.org.uk>2011-09-16 00:25:05 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2012-01-03 22:54:06 -0500
commit9be96f3fd10187f185d84cf878cf032465bcced3 (patch)
tree432a430ed9e0cbe0c18916cd3c3992f09b3feb37 /block/partitions/ldm.h
parent4752bc309b7604d507c973c7b7678ac2ce10a058 (diff)
downloadlinux-0-day-9be96f3fd10187f185d84cf878cf032465bcced3.tar.gz
move fs/partitions to block/
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'block/partitions/ldm.h')
-rw-r--r--block/partitions/ldm.h215
1 files changed, 215 insertions, 0 deletions
diff --git a/block/partitions/ldm.h b/block/partitions/ldm.h
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+++ b/block/partitions/ldm.h
@@ -0,0 +1,215 @@
+/**
+ * ldm - Part of the Linux-NTFS project.
+ *
+ * Copyright (C) 2001,2002 Richard Russon <ldm@flatcap.org>
+ * Copyright (c) 2001-2007 Anton Altaparmakov
+ * Copyright (C) 2001,2002 Jakob Kemi <jakob.kemi@telia.com>
+ *
+ * Documentation is available at http://www.linux-ntfs.org/doku.php?id=downloads
+ *
+ * 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 0x5052495648454144ULL /* PRIVHEAD */
+#define MAGIC_TOCBLOCK 0x544F43424C4F434BULL /* 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 58
+
+/* 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 LDM_PARTITION 0x42 /* Formerly SFS (Landis). */
+
+#define TOC_BITMAP1 "config" /* Names of the two defined */
+#define TOC_BITMAP2 "log" /* bitmaps in the TOCBLOCK. */
+
+/* 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 parsed_partitions *state);
+
+#endif /* _FS_PT_LDM_H_ */
+