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/* btrfs.c - B-tree file system. */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2010,2011,2012,2013 Free Software Foundation, Inc.
*
* GRUB 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 3 of the License, or
* (at your option) any later version.
*
* GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef GRUB_BTRFS_H
#define GRUB_BTRFS_H 1
enum
{
GRUB_BTRFS_ITEM_TYPE_INODE_ITEM = 0x01,
GRUB_BTRFS_ITEM_TYPE_INODE_REF = 0x0c,
GRUB_BTRFS_ITEM_TYPE_DIR_ITEM = 0x54,
GRUB_BTRFS_ITEM_TYPE_EXTENT_ITEM = 0x6c,
GRUB_BTRFS_ITEM_TYPE_ROOT_ITEM = 0x84,
GRUB_BTRFS_ITEM_TYPE_ROOT_BACKREF = 0x90,
GRUB_BTRFS_ITEM_TYPE_DEVICE = 0xd8,
GRUB_BTRFS_ITEM_TYPE_CHUNK = 0xe4
};
enum
{
GRUB_BTRFS_ROOT_VOL_OBJECTID = 5,
GRUB_BTRFS_TREE_ROOT_OBJECTID = 0x100,
};
struct grub_btrfs_root_item
{
grub_uint8_t dummy[0xb0];
grub_uint64_t tree;
grub_uint64_t inode;
};
struct grub_btrfs_key
{
grub_uint64_t object_id;
grub_uint8_t type;
grub_uint64_t offset;
} GRUB_PACKED;
struct grub_btrfs_root_backref
{
grub_uint64_t inode_id;
grub_uint64_t seqnr;
grub_uint16_t n;
char name[0];
};
struct grub_btrfs_inode_ref
{
grub_uint64_t idxid;
grub_uint16_t n;
char name[0];
};
#endif
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