more

11 files changed, 404 insertions, 14 deletions

diff --git a/pkg/btrfs/btrfsitem/item_dir.go b/pkg/btrfs/btrfsitem/item_dir.go
new file mode 100644
index 0000000..2e0529e
--- /dev/null
+++ b/pkg/btrfs/btrfsitem/item_dir.go
@@ -0,0 +1,104 @@
+package btrfsitem
+
+import (
+	"fmt"
+
+	"lukeshu.com/btrfs-tools/pkg/binstruct"
+	"lukeshu.com/btrfs-tools/pkg/btrfs/internal"
+)
+
+type DirList []Dir // DIR_ITEM=84, DIR_INDEX=96, XATTR_ITEM=24
+
+func (o *DirList) UnmarshalBinary(dat []byte) (int, error) {
+	n := 0
+	for n < len(dat) {
+		var ref Dir
+		_n, err := binstruct.Unmarshal(dat, &ref)
+		n += _n
+		if err != nil {
+			return n, err
+		}
+		*o = append(*o, ref)
+	}
+	return n, nil
+}
+
+func (o DirList) MarshalBinary() ([]byte, error) {
+	var ret []byte
+	for _, ref := range o {
+		bs, err := binstruct.Marshal(ref)
+		ret = append(ret, bs...)
+		if err != nil {
+			return ret, err
+		}
+	}
+	return ret, nil
+}
+
+type Dir struct {
+	Location      internal.Key `bin:"off=0x0, siz=0x11"`
+	TransID       int64        `bin:"off=0x11, siz=8"`
+	DataLen       uint16       `bin:"off=0x19, siz=2"`
+	NameLen       uint16       `bin:"off=0x1b, siz=2"`
+	Type          FileType     `bin:"off=0x1d, siz=1"`
+	binstruct.End `bin:"off=0x1e"`
+	Data          []byte `bin:"-"`
+	Name          []byte `bin:"-"`
+}
+
+func (o *Dir) UnmarshalBinary(dat []byte) (int, error) {
+	n, err := binstruct.UnmarshalWithoutInterface(dat, o)
+	if err != nil {
+		return n, err
+	}
+	o.Data = dat[n : n+int(o.DataLen)]
+	n += int(o.DataLen)
+	o.Name = dat[n : n+int(o.NameLen)]
+	n += int(o.NameLen)
+	return n, nil
+}
+
+func (o Dir) MarshalBinary() ([]byte, error) {
+	o.DataLen = uint16(len(o.Data))
+	o.NameLen = uint16(len(o.Name))
+	dat, err := binstruct.MarshalWithoutInterface(o)
+	if err != nil {
+		return dat, err
+	}
+	dat = append(dat, o.Data...)
+	dat = append(dat, o.Name...)
+	return dat, nil
+}
+
+type FileType uint8
+
+const (
+	BTRFS_FT_UNKNOWN  = FileType(0)
+	BTRFS_FT_REG_FILE = FileType(1)
+	BTRFS_FT_DIR      = FileType(2)
+	BTRFS_FT_CHRDEV   = FileType(3)
+	BTRFS_FT_BLKDEV   = FileType(4)
+	BTRFS_FT_FIFO     = FileType(5)
+	BTRFS_FT_SOCK     = FileType(6)
+	BTRFS_FT_SYMLINK  = FileType(7)
+	BTRFS_FT_XATTR    = FileType(8)
+	BTRFS_FT_MAX      = FileType(9)
+)
+
+func (ft FileType) String() string {
+	names := map[FileType]string{
+		BTRFS_FT_UNKNOWN:  "UNKNOWN",
+		BTRFS_FT_REG_FILE: "REG_FILE",
+		BTRFS_FT_DIR:      "DIR",
+		BTRFS_FT_CHRDEV:   "CHRDEV",
+		BTRFS_FT_BLKDEV:   "BLKDEV",
+		BTRFS_FT_FIFO:     "FIFO",
+		BTRFS_FT_SOCK:     "SOCK",
+		BTRFS_FT_SYMLINK:  "SYMLINK",
+		BTRFS_FT_XATTR:    "XATTR",
+	}
+	if name, ok := names[ft]; ok {
+		return name
+	}
+	return fmt.Sprintf("DIR_ITEM.%d", uint8(ft))
+}
diff --git a/pkg/btrfs/btrfsitem/item_empty.go b/pkg/btrfs/btrfsitem/item_empty.go
index fe7ae90..5a26104 100644
--- a/pkg/btrfs/btrfsitem/item_empty.go
+++ b/pkg/btrfs/btrfsitem/item_empty.go
@@ -4,6 +4,6 @@ import (
 	"lukeshu.com/btrfs-tools/pkg/binstruct"
 )
 
-type Empty struct { // UNTYPED=0, QGROUP_RELATION=246
+type Empty struct { // UNTYPED=0, TREE_BLOCK_REF=176, SHARED_BLOCK_REF=182, QGROUP_RELATION=246
 	binstruct.End `bin:"off=0"`
 }
diff --git a/pkg/btrfs/btrfsitem/item_extent.go b/pkg/btrfs/btrfsitem/item_extent.go
new file mode 100644
index 0000000..7d3eb05
--- /dev/null
+++ b/pkg/btrfs/btrfsitem/item_extent.go
@@ -0,0 +1,132 @@
+package btrfsitem
+
+import (
+	"fmt"
+
+	"lukeshu.com/btrfs-tools/pkg/binstruct"
+	"lukeshu.com/btrfs-tools/pkg/btrfs/internal"
+	"lukeshu.com/btrfs-tools/pkg/util"
+)
+
+type Extent struct { // EXTENT_ITEM=168
+	Head ExtentHeader
+	Info TreeBlockInfo // only if .Head.Flags.Has(BTRFS_EXTENT_FLAG_TREE_BLOCK)
+	Refs []ExtentInlineRef
+}
+
+func (o *Extent) UnmarshalBinary(dat []byte) (int, error) {
+	n, err := binstruct.Unmarshal(dat, &o.Head)
+	if err != nil {
+		return n, err
+	}
+	if o.Head.Flags.Has(BTRFS_EXTENT_FLAG_TREE_BLOCK) {
+		_n, err := binstruct.Unmarshal(dat[n:], &o.Info)
+		n += _n
+		if err != nil {
+			return n, err
+		}
+	}
+	o.Refs = nil
+	for n < len(dat) {
+		var ref ExtentInlineRef
+		_n, err := binstruct.Unmarshal(dat[n:], &ref)
+		n += _n
+		o.Refs = append(o.Refs, ref)
+		if err != nil {
+			return n, err
+		}
+	}
+	return n, nil
+}
+
+func (o Extent) MarshalBinary() ([]byte, error) {
+	dat, err := binstruct.Marshal(o.Head)
+	if err != nil {
+		return dat, err
+	}
+	if o.Head.Flags.Has(BTRFS_EXTENT_FLAG_TREE_BLOCK) {
+		bs, err := binstruct.Marshal(o.Info)
+		dat = append(dat, bs...)
+		if err != nil {
+			return dat, err
+		}
+	}
+	for _, ref := range o.Refs {
+		bs, err := binstruct.Marshal(ref)
+		dat = append(dat, bs...)
+		if err != nil {
+			return dat, err
+		}
+	}
+	return dat, nil
+}
+
+type ExtentHeader struct {
+	Refs          int64       `bin:"off=0, siz=8"`
+	Generation    int64       `bin:"off=8, siz=8"`
+	Flags         ExtentFlags `bin:"off=16, siz=8"`
+	binstruct.End `bin:"off=24"`
+}
+
+type TreeBlockInfo struct {
+	Key           internal.Key `bin:"off=0, siz=0x11"`
+	Level         uint8        `bin:"off=0x11, siz=0x8"`
+	binstruct.End `bin:"off=0x19"`
+}
+
+type ExtentFlags uint64
+
+const (
+	BTRFS_EXTENT_FLAG_DATA = ExtentFlags(1 << iota)
+	BTRFS_EXTENT_FLAG_TREE_BLOCK
+)
+
+var extentFlagNames = []string{
+	"DATA",
+	"TREE_BLOCK",
+}
+
+func (f ExtentFlags) Has(req ExtentFlags) bool { return f&req == req }
+func (f ExtentFlags) String() string           { return util.BitfieldString(f, extentFlagNames) }
+
+type ExtentInlineRef struct {
+	Type          Type   `bin:"off=0, siz=1"`
+	Offset        uint64 `bin:"off=1, siz=8"`
+	binstruct.End `bin:"off=9"`
+	Body          Item `bin:"-"`
+}
+
+func (o *ExtentInlineRef) UnmarshalBinary(dat []byte) (int, error) {
+	n, err := binstruct.UnmarshalWithoutInterface(dat, o)
+	if err != nil {
+		return n, err
+	}
+	switch o.Type {
+	case TREE_BLOCK_REF_KEY, SHARED_BLOCK_REF_KEY:
+		o.Body = Empty{}
+	case EXTENT_DATA_REF_KEY:
+		return n, fmt.Errorf("the C code to do this doesn't make any sense")
+	case SHARED_DATA_REF_KEY:
+		var sref SharedDataRef
+		_n, err := binstruct.Unmarshal(dat[n:], &sref)
+		n += _n
+		o.Body = sref
+		if err != nil {
+			return n, err
+		}
+	}
+	return n, nil
+}
+
+func (o ExtentInlineRef) MarshalBinary() ([]byte, error) {
+	dat, err := binstruct.MarshalWithoutInterface(o)
+	if err != nil {
+		return dat, err
+	}
+	bs, err := binstruct.Marshal(o.Body)
+	dat = append(dat, bs...)
+	if err != nil {
+		return dat, err
+	}
+	return dat, nil
+}
diff --git a/pkg/btrfs/btrfsitem/item_extentdataref.go b/pkg/btrfs/btrfsitem/item_extentdataref.go
new file mode 100644
index 0000000..c898b72
--- /dev/null
+++ b/pkg/btrfs/btrfsitem/item_extentdataref.go
@@ -0,0 +1,14 @@
+package btrfsitem
+
+import (
+	"lukeshu.com/btrfs-tools/pkg/binstruct"
+	"lukeshu.com/btrfs-tools/pkg/btrfs/internal"
+)
+
+type ExtentDataRef struct { // EXTENT_DATA_REF=178
+	Root          int64          `bin:"off=0, siz=8"`
+	ObjectID      internal.ObjID `bin:"off=8, siz=8"`
+	Offset        int64          `bin:"off=16, siz=8"`
+	Count         int32          `bin:"off=24, siz=4"`
+	binstruct.End `bin:"off=28"`
+}
diff --git a/pkg/btrfs/btrfsitem/item_inode.go b/pkg/btrfs/btrfsitem/item_inode.go
index 4d38380..175b900 100644
--- a/pkg/btrfs/btrfsitem/item_inode.go
+++ b/pkg/btrfs/btrfsitem/item_inode.go
@@ -3,6 +3,7 @@ package btrfsitem
 import (
 	"lukeshu.com/btrfs-tools/pkg/binstruct"
 	"lukeshu.com/btrfs-tools/pkg/btrfs/internal"
+	"lukeshu.com/btrfs-tools/pkg/util"
 )
 
 type Inode struct { // INODE_ITEM=1
@@ -16,7 +17,7 @@ type Inode struct { // INODE_ITEM=1
 	GID           int32         `bin:"off=0x30, siz=0x4"`
 	Mode          int32         `bin:"off=0x34, siz=0x4"`
 	RDev          int64         `bin:"off=0x38, siz=0x8"`
-	Flags         uint64        `bin:"off=0x40, siz=0x8"`
+	Flags         InodeFlags    `bin:"off=0x40, siz=0x8"`
 	Sequence      int64         `bin:"off=0x48, siz=0x8"`
 	Reserved      [4]int64      `bin:"off=0x50, siz=0x20"`
 	ATime         internal.Time `bin:"off=0x70, siz=0xc"`
@@ -25,3 +26,38 @@ type Inode struct { // INODE_ITEM=1
 	OTime         internal.Time `bin:"off=0x94, siz=0xc"`
 	binstruct.End `bin:"off=0xa0"`
 }
+
+type InodeFlags uint64
+
+const (
+	BTRFS_INODE_NODATASUM = InodeFlags(1 << iota)
+	BTRFS_INODE_NODATACOW
+	BTRFS_INODE_READONLY
+	BTRFS_INODE_NOCOMPRESS
+	BTRFS_INODE_PREALLOC
+	BTRFS_INODE_SYNC
+	BTRFS_INODE_IMMUTABLE
+	BTRFS_INODE_APPEND
+	BTRFS_INODE_NODUMP
+	BTRFS_INODE_NOATIME
+	BTRFS_INODE_DIRSYNC
+	BTRFS_INODE_COMPRESS
+)
+
+var inodeFlagNames = []string{
+	"NODATASUM",
+	"NODATACOW",
+	"READONLY",
+	"NOCOMPRESS",
+	"PREALLOC",
+	"SYNC",
+	"IMMUTABLE",
+	"APPEND",
+	"NODUMP",
+	"NOATIME",
+	"DIRSYNC",
+	"COMPRESS",
+}
+
+func (f InodeFlags) Has(req InodeFlags) bool { return f&req == req }
+func (f InodeFlags) String() string          { return util.BitfieldString(f, inodeFlagNames) }
diff --git a/pkg/btrfs/btrfsitem/item_metadata.go b/pkg/btrfs/btrfsitem/item_metadata.go
new file mode 100644
index 0000000..7bfe677
--- /dev/null
+++ b/pkg/btrfs/btrfsitem/item_metadata.go
@@ -0,0 +1,44 @@
+package btrfsitem
+
+import (
+	"lukeshu.com/btrfs-tools/pkg/binstruct"
+)
+
+// Metadata is like Extent, but doesn't have .Info.
+type Metadata struct { // METADATA_ITEM=169
+	Head ExtentHeader
+	Refs []ExtentInlineRef
+}
+
+func (o *Metadata) UnmarshalBinary(dat []byte) (int, error) {
+	n, err := binstruct.Unmarshal(dat, &o.Head)
+	if err != nil {
+		return n, err
+	}
+	o.Refs = nil
+	for n < len(dat) {
+		var ref ExtentInlineRef
+		_n, err := binstruct.Unmarshal(dat[n:], &ref)
+		n += _n
+		o.Refs = append(o.Refs, ref)
+		if err != nil {
+			return n, err
+		}
+	}
+	return n, nil
+}
+
+func (o Metadata) MarshalBinary() ([]byte, error) {
+	dat, err := binstruct.Marshal(o.Head)
+	if err != nil {
+		return dat, err
+	}
+	for _, ref := range o.Refs {
+		bs, err := binstruct.Marshal(ref)
+		dat = append(dat, bs...)
+		if err != nil {
+			return dat, err
+		}
+	}
+	return dat, nil
+}
diff --git a/pkg/btrfs/btrfsitem/item_root.go b/pkg/btrfs/btrfsitem/item_root.go
index a7867e8..9dd43f8 100644
--- a/pkg/btrfs/btrfsitem/item_root.go
+++ b/pkg/btrfs/btrfsitem/item_root.go
@@ -42,9 +42,9 @@ const (
 	BTRFS_ROOT_SUBVOL_RDONLY = RootFlags(1 << iota)
 )
 
-var rootItemFlagNames = []string{
+var rootFlagNames = []string{
 	"SUBVOL_RDONLY",
 }
 
 func (f RootFlags) Has(req RootFlags) bool { return f&req == req }
-func (f RootFlags) String() string         { return util.BitfieldString(f, rootItemFlagNames) }
+func (f RootFlags) String() string         { return util.BitfieldString(f, rootFlagNames) }
diff --git a/pkg/btrfs/btrfsitem/item_shareddataref.go b/pkg/btrfs/btrfsitem/item_shareddataref.go
new file mode 100644
index 0000000..0d73231
--- /dev/null
+++ b/pkg/btrfs/btrfsitem/item_shareddataref.go
@@ -0,0 +1,10 @@
+package btrfsitem
+
+import (
+	"lukeshu.com/btrfs-tools/pkg/binstruct"
+)
+
+type SharedDataRef struct { // SHARED_DATA_REF=184
+	Count         int32 `bin:"off=0, siz=4"`
+	binstruct.End `bin:"off=4"`
+}
diff --git a/pkg/btrfs/btrfsitem/items.txt b/pkg/btrfs/btrfsitem/items.txt
index f38af3f..0cca6df 100644
--- a/pkg/btrfs/btrfsitem/items.txt
+++ b/pkg/btrfs/btrfsitem/items.txt
@@ -1,12 +1,21 @@
 CHUNK_ITEM=228 Chunk
 DEV_ITEM=216 Dev
 DEV_EXTENT=204 DevExtent
+DIR_ITEM=84, DirList
+DIR_INDEX=96, DirList
+XATTR_ITEM=24 DirList
 UNTYPED=0, Empty
+TREE_BLOCK_REF=176, Empty
+SHARED_BLOCK_REF=182, Empty
 QGROUP_RELATION=246 Empty
+EXTENT_ITEM=168 Extent
+EXTENT_DATA_REF=178 ExtentDataRef
 INODE_ITEM=1 Inode
 INODE_REF=12 InodeRefList
+METADATA_ITEM=169 Metadata
 ORPHAN_ITEM=48 Orphan
 PERSISTENT_ITEM=249 DevStats
 ROOT_ITEM=132 Root
+SHARED_DATA_REF=184 SharedDataRef
 UUID_SUBVOL=251 UUIDMap
 UUID_RECEIVED_SUBVOL=252 UUIDMap
diff --git a/pkg/btrfs/btrfsitem/items_gen.go b/pkg/btrfs/btrfsitem/items_gen.go
index 63a5ac1..03faf8a 100644
--- a/pkg/btrfs/btrfsitem/items_gen.go
+++ b/pkg/btrfs/btrfsitem/items_gen.go
@@ -10,13 +10,22 @@ const (
 	CHUNK_ITEM_KEY           = internal.CHUNK_ITEM_KEY
 	DEV_ITEM_KEY             = internal.DEV_ITEM_KEY
 	DEV_EXTENT_KEY           = internal.DEV_EXTENT_KEY
+	DIR_ITEM_KEY             = internal.DIR_ITEM_KEY
+	DIR_INDEX_KEY            = internal.DIR_INDEX_KEY
+	XATTR_ITEM_KEY           = internal.XATTR_ITEM_KEY
 	UNTYPED_KEY              = internal.UNTYPED_KEY
+	TREE_BLOCK_REF_KEY       = internal.TREE_BLOCK_REF_KEY
+	SHARED_BLOCK_REF_KEY     = internal.SHARED_BLOCK_REF_KEY
 	QGROUP_RELATION_KEY      = internal.QGROUP_RELATION_KEY
+	EXTENT_ITEM_KEY          = internal.EXTENT_ITEM_KEY
+	EXTENT_DATA_REF_KEY      = internal.EXTENT_DATA_REF_KEY
 	INODE_ITEM_KEY           = internal.INODE_ITEM_KEY
 	INODE_REF_KEY            = internal.INODE_REF_KEY
+	METADATA_ITEM_KEY        = internal.METADATA_ITEM_KEY
 	ORPHAN_ITEM_KEY          = internal.ORPHAN_ITEM_KEY
 	PERSISTENT_ITEM_KEY      = internal.PERSISTENT_ITEM_KEY
 	ROOT_ITEM_KEY            = internal.ROOT_ITEM_KEY
+	SHARED_DATA_REF_KEY      = internal.SHARED_DATA_REF_KEY
 	UUID_SUBVOL_KEY          = internal.UUID_SUBVOL_KEY
 	UUID_RECEIVED_SUBVOL_KEY = internal.UUID_RECEIVED_SUBVOL_KEY
 )
@@ -25,24 +34,38 @@ var keytype2gotype = map[Type]reflect.Type{
 	CHUNK_ITEM_KEY:           reflect.TypeOf(Chunk{}),
 	DEV_ITEM_KEY:             reflect.TypeOf(Dev{}),
 	DEV_EXTENT_KEY:           reflect.TypeOf(DevExtent{}),
+	DIR_ITEM_KEY:             reflect.TypeOf(DirList{}),
+	DIR_INDEX_KEY:            reflect.TypeOf(DirList{}),
+	XATTR_ITEM_KEY:           reflect.TypeOf(DirList{}),
 	UNTYPED_KEY:              reflect.TypeOf(Empty{}),
+	TREE_BLOCK_REF_KEY:       reflect.TypeOf(Empty{}),
+	SHARED_BLOCK_REF_KEY:     reflect.TypeOf(Empty{}),
 	QGROUP_RELATION_KEY:      reflect.TypeOf(Empty{}),
+	EXTENT_ITEM_KEY:          reflect.TypeOf(Extent{}),
+	EXTENT_DATA_REF_KEY:      reflect.TypeOf(ExtentDataRef{}),
 	INODE_ITEM_KEY:           reflect.TypeOf(Inode{}),
 	INODE_REF_KEY:            reflect.TypeOf(InodeRefList{}),
+	METADATA_ITEM_KEY:        reflect.TypeOf(Metadata{}),
 	ORPHAN_ITEM_KEY:          reflect.TypeOf(Orphan{}),
 	PERSISTENT_ITEM_KEY:      reflect.TypeOf(DevStats{}),
 	ROOT_ITEM_KEY:            reflect.TypeOf(Root{}),
+	SHARED_DATA_REF_KEY:      reflect.TypeOf(SharedDataRef{}),
 	UUID_SUBVOL_KEY:          reflect.TypeOf(UUIDMap{}),
 	UUID_RECEIVED_SUBVOL_KEY: reflect.TypeOf(UUIDMap{}),
 }
 
-func (Chunk) isItem()        {}
-func (Dev) isItem()          {}
-func (DevExtent) isItem()    {}
-func (DevStats) isItem()     {}
-func (Empty) isItem()        {}
-func (Inode) isItem()        {}
-func (InodeRefList) isItem() {}
-func (Orphan) isItem()       {}
-func (Root) isItem()         {}
-func (UUIDMap) isItem()      {}
+func (Chunk) isItem()         {}
+func (Dev) isItem()           {}
+func (DevExtent) isItem()     {}
+func (DevStats) isItem()      {}
+func (DirList) isItem()       {}
+func (Empty) isItem()         {}
+func (Extent) isItem()        {}
+func (ExtentDataRef) isItem() {}
+func (Inode) isItem()         {}
+func (InodeRefList) isItem()  {}
+func (Metadata) isItem()      {}
+func (Orphan) isItem()        {}
+func (Root) isItem()          {}
+func (SharedDataRef) isItem() {}
+func (UUIDMap) isItem()       {}
diff --git a/pkg/btrfs/internal/itemtype.go b/pkg/btrfs/internal/itemtype.go
index d780b60..90fb2a7 100644
--- a/pkg/btrfs/internal/itemtype.go
+++ b/pkg/btrfs/internal/itemtype.go
@@ -8,13 +8,22 @@ const (
 	CHUNK_ITEM_KEY           = ItemType(228)
 	DEV_ITEM_KEY             = ItemType(216)
 	DEV_EXTENT_KEY           = ItemType(204)
+	DIR_ITEM_KEY             = ItemType(84)
+	DIR_INDEX_KEY            = ItemType(96)
+	XATTR_ITEM_KEY           = ItemType(24)
 	UNTYPED_KEY              = ItemType(0)
+	TREE_BLOCK_REF_KEY       = ItemType(176)
+	SHARED_BLOCK_REF_KEY     = ItemType(182)
 	QGROUP_RELATION_KEY      = ItemType(246)
+	EXTENT_ITEM_KEY          = ItemType(168)
+	EXTENT_DATA_REF_KEY      = ItemType(178)
 	INODE_ITEM_KEY           = ItemType(1)
 	INODE_REF_KEY            = ItemType(12)
+	METADATA_ITEM_KEY        = ItemType(169)
 	ORPHAN_ITEM_KEY          = ItemType(48)
 	PERSISTENT_ITEM_KEY      = ItemType(249)
 	ROOT_ITEM_KEY            = ItemType(132)
+	SHARED_DATA_REF_KEY      = ItemType(184)
 	UUID_SUBVOL_KEY          = ItemType(251)
 	UUID_RECEIVED_SUBVOL_KEY = ItemType(252)
 )
@@ -24,13 +33,22 @@ func (t ItemType) String() string {
 		CHUNK_ITEM_KEY:           "CHUNK_ITEM",
 		DEV_ITEM_KEY:             "DEV_ITEM",
 		DEV_EXTENT_KEY:           "DEV_EXTENT",
+		DIR_ITEM_KEY:             "DIR_ITEM",
+		DIR_INDEX_KEY:            "DIR_INDEX",
+		XATTR_ITEM_KEY:           "XATTR_ITEM",
 		UNTYPED_KEY:              "UNTYPED",
+		TREE_BLOCK_REF_KEY:       "TREE_BLOCK_REF",
+		SHARED_BLOCK_REF_KEY:     "SHARED_BLOCK_REF",
 		QGROUP_RELATION_KEY:      "QGROUP_RELATION",
+		EXTENT_ITEM_KEY:          "EXTENT_ITEM",
+		EXTENT_DATA_REF_KEY:      "EXTENT_DATA_REF",
 		INODE_ITEM_KEY:           "INODE_ITEM",
 		INODE_REF_KEY:            "INODE_REF",
+		METADATA_ITEM_KEY:        "METADATA_ITEM",
 		ORPHAN_ITEM_KEY:          "ORPHAN_ITEM",
 		PERSISTENT_ITEM_KEY:      "PERSISTENT_ITEM",
 		ROOT_ITEM_KEY:            "ROOT_ITEM",
+		SHARED_DATA_REF_KEY:      "SHARED_DATA_REF",
 		UUID_SUBVOL_KEY:          "UUID_SUBVOL",
 		UUID_RECEIVED_SUBVOL_KEY: "UUID_RECEIVED_SUBVOL",
 	}