71 lines
1.7 KiB
C
71 lines
1.7 KiB
C
/* btrfs.c - B-tree file system. */
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2010,2011,2012,2013 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef GRUB_BTRFS_H
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#define GRUB_BTRFS_H 1
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enum
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{
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GRUB_BTRFS_ITEM_TYPE_INODE_ITEM = 0x01,
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GRUB_BTRFS_ITEM_TYPE_INODE_REF = 0x0c,
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GRUB_BTRFS_ITEM_TYPE_DIR_ITEM = 0x54,
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GRUB_BTRFS_ITEM_TYPE_EXTENT_ITEM = 0x6c,
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GRUB_BTRFS_ITEM_TYPE_ROOT_ITEM = 0x84,
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GRUB_BTRFS_ITEM_TYPE_ROOT_BACKREF = 0x90,
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GRUB_BTRFS_ITEM_TYPE_DEVICE = 0xd8,
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GRUB_BTRFS_ITEM_TYPE_CHUNK = 0xe4
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};
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enum
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{
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GRUB_BTRFS_ROOT_VOL_OBJECTID = 5,
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GRUB_BTRFS_TREE_ROOT_OBJECTID = 0x100,
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};
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struct grub_btrfs_root_item
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{
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grub_uint8_t dummy[0xb0];
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grub_uint64_t tree;
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grub_uint64_t inode;
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};
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struct grub_btrfs_key
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{
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grub_uint64_t object_id;
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grub_uint8_t type;
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grub_uint64_t offset;
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} __attribute__ ((packed));
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struct grub_btrfs_root_backref
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{
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grub_uint64_t inode_id;
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grub_uint64_t seqnr;
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grub_uint16_t n;
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char name[0];
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};
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struct grub_btrfs_inode_ref
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{
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grub_uint64_t idxid;
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grub_uint16_t n;
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char name[0];
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};
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#endif
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