arch/all-pc/boot/grub2-aros/include/grub/btrfs.h

   1 /* btrfs.c - B-tree file system.  */
   2 /*
   3  *  GRUB  --  GRand Unified Bootloader
   4  *  Copyright (C) 2010,2011,2012,2013  Free Software Foundation, Inc.
   5  *
   6  *  GRUB is free software: you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation, either version 3 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  GRUB is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #ifndef GRUB_BTRFS_H
  21 #define GRUB_BTRFS_H    1
  22
  23 enum
  24   {
  25     GRUB_BTRFS_ITEM_TYPE_INODE_ITEM = 0x01,
  26     GRUB_BTRFS_ITEM_TYPE_INODE_REF = 0x0c,
  27     GRUB_BTRFS_ITEM_TYPE_DIR_ITEM = 0x54,
  28     GRUB_BTRFS_ITEM_TYPE_EXTENT_ITEM = 0x6c,
  29     GRUB_BTRFS_ITEM_TYPE_ROOT_ITEM = 0x84,
  30     GRUB_BTRFS_ITEM_TYPE_ROOT_BACKREF = 0x90,
  31     GRUB_BTRFS_ITEM_TYPE_DEVICE = 0xd8,
  32     GRUB_BTRFS_ITEM_TYPE_CHUNK = 0xe4
  33   };
  34
  35 enum
  36   {
  37     GRUB_BTRFS_ROOT_VOL_OBJECTID = 5,
  38     GRUB_BTRFS_TREE_ROOT_OBJECTID = 0x100,
  39   };
  40
  41 struct grub_btrfs_root_item
  42 {
  43   grub_uint8_t dummy[0xb0];
  44   grub_uint64_t tree;
  45   grub_uint64_t inode;
  46 };
  47
  48 struct grub_btrfs_key
  49 {
  50   grub_uint64_t object_id;
  51   grub_uint8_t type;
  52   grub_uint64_t offset;
  53 } GRUB_PACKED;
  54
  55
  56 struct grub_btrfs_root_backref
  57 {
  58   grub_uint64_t inode_id;
  59   grub_uint64_t seqnr;
  60   grub_uint16_t n;
  61   char name[0];
  62 };
  63
  64 struct grub_btrfs_inode_ref
  65 {
  66   grub_uint64_t idxid;
  67   grub_uint16_t n;
  68   char name[0];
  69 };
  70
  71 #endif