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BTRFS: Add some missing constants

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Chunk tree objectID is 3,
256 is the objectID of first created subvolume in fs tree,
    and also of first chunk tree (item in chunk tree).

Signed-off-by: Adrien Destugues <pulkomandy@pulkomandy.tk>
This commit is contained in:
hyche 2017-06-16 22:52:17 +07:00 committed by Adrien Destugues
parent 1481c49cd1
commit bd2dab1c73
2 changed files with 26 additions and 24 deletions
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4
src/add-ons/kernel/file_systems/btrfs/Volume.cpp
View File

@ -389,7 +389,7 @@ Volume::Mount(const char* deviceName, uint32 flags)
return B_NO_MEMORY;
// ready
status = get_vnode(fFSVolume, BTRFS_OBJECT_ID_CHUNK_TREE,
status = get_vnode(fFSVolume, BTRFS_FIRST_SUBVOLUME,
(void**)&fRootNode);
if (status != B_OK) {
ERROR("could not create root node: get_vnode() failed!\n");
@ -492,7 +492,7 @@ Volume::FindBlock(off_t logical, off_t& physical)
btrfs_key search_key;
search_key.SetOffset(logical);
search_key.SetType(BTRFS_KEY_TYPE_CHUNK_ITEM);
search_key.SetObjectID(BTRFS_OBJECT_ID_CHUNK_TREE);
search_key.SetObjectID(BTRFS_OBJECT_ID_FIRST_CHUNK_TREE);
btrfs_chunk* chunk;
size_t chunk_length;
status_t status = fChunkTree->FindPrevious(search_key, (void**)&chunk,

46
src/add-ons/kernel/file_systems/btrfs/btrfs.h
View File

@ -303,32 +303,34 @@ struct btrfs_extent_data {
} _PACKED;
#define BTRFS_SUPER_BLOCK_MAGIC "_BHRfS_M"
#define BTRFS_SUPER_BLOCK_MAGIC "_BHRfS_M"
#define BTRFS_FIRST_SUBVOLUME 256
#define BTRFS_OBJECT_ID_ROOT_TREE 1
#define BTRFS_OBJECT_ID_EXTENT_TREE 2
#define BTRFS_OBJECT_ID_DEV_TREE 4
#define BTRFS_OBJECT_ID_FS_TREE 5
#define BTRFS_OBJECT_ID_ROOT_TREE_DIR 6
#define BTRFS_OBJECT_ID_CHECKSUM_TREE 7
#define BTRFS_OBJECT_ID_CHUNK_TREE 256
#define BTRFS_OBJECT_ID_ROOT_TREE 1
#define BTRFS_OBJECT_ID_EXTENT_TREE 2
#define BTRFS_OBJECT_ID_CHUNK_TREE 3
#define BTRFS_OBJECT_ID_DEV_TREE 4
#define BTRFS_OBJECT_ID_FS_TREE 5
#define BTRFS_OBJECT_ID_ROOT_TREE_DIR 6
#define BTRFS_OBJECT_ID_CHECKSUM_TREE 7
#define BTRFS_OBJECT_ID_FIRST_CHUNK_TREE 256
#define BTRFS_KEY_TYPE_CHUNK_ITEM 228
#define BTRFS_KEY_TYPE_DIR_ITEM 84
#define BTRFS_KEY_TYPE_DIR_INDEX 96
#define BTRFS_KEY_TYPE_EXTENT_DATA 108
#define BTRFS_KEY_TYPE_INODE_ITEM 1
#define BTRFS_KEY_TYPE_INODE_REF 12
#define BTRFS_KEY_TYPE_ROOT_ITEM 132
#define BTRFS_KEY_TYPE_XATTR_ITEM 24
#define BTRFS_KEY_TYPE_CHUNK_ITEM 228
#define BTRFS_KEY_TYPE_DIR_ITEM 84
#define BTRFS_KEY_TYPE_DIR_INDEX 96
#define BTRFS_KEY_TYPE_EXTENT_DATA 108
#define BTRFS_KEY_TYPE_INODE_ITEM 1
#define BTRFS_KEY_TYPE_INODE_REF 12
#define BTRFS_KEY_TYPE_ROOT_ITEM 132
#define BTRFS_KEY_TYPE_XATTR_ITEM 24
#define BTRFS_EXTENT_COMPRESS_NONE 0
#define BTRFS_EXTENT_COMPRESS_ZLIB 1
#define BTRFS_EXTENT_COMPRESS_LZO 2
#define BTRFS_EXTENT_COMPRESS_NONE 0
#define BTRFS_EXTENT_COMPRESS_ZLIB 1
#define BTRFS_EXTENT_COMPRESS_LZO 2
#define BTRFS_EXTENT_DATA_INLINE 0
#define BTRFS_EXTENT_DATA_REGULAR 1
#define BTRFS_EXTENT_DATA_PRE 2
#define BTRFS_EXTENT_DATA_INLINE 0
#define BTRFS_EXTENT_DATA_REGULAR 1
#define BTRFS_EXTENT_DATA_PRE 2
struct file_cookie {