1 files changed, 51 insertions, 0 deletions
diff --git a/lib/btrfs/btrfsitem/item_root.go b/lib/btrfs/btrfsitem/item_root.go
new file mode 100644
index 0000000..ff9311f
--- /dev/null
+++ b/lib/btrfs/btrfsitem/item_root.go
@@ -0,0 +1,51 @@
+package btrfsitem
+
+import (
+	"git.lukeshu.com/btrfs-progs-ng/lib/binstruct"
+	"git.lukeshu.com/btrfs-progs-ng/lib/btrfs/btrfsvol"
+	"git.lukeshu.com/btrfs-progs-ng/lib/btrfs/internal"
+	"git.lukeshu.com/btrfs-progs-ng/lib/util"
+)
+
+type Root struct { // ROOT_ITEM=132
+	Inode         Inode                `bin:"off=0x000, siz=0xa0"`
+	Generation    internal.Generation  `bin:"off=0x0a0, siz=0x08"`
+	RootDirID     internal.ObjID       `bin:"off=0x0a8, siz=0x08"`
+	ByteNr        btrfsvol.LogicalAddr `bin:"off=0x0b0, siz=0x08"`
+	ByteLimit     int64                `bin:"off=0x0b8, siz=0x08"`
+	BytesUsed     int64                `bin:"off=0x0c0, siz=0x08"`
+	LastSnapshot  int64                `bin:"off=0x0c8, siz=0x08"`
+	Flags         RootFlags            `bin:"off=0x0d0, siz=0x08"`
+	Refs          int32                `bin:"off=0x0d8, siz=0x04"`
+	DropProgress  internal.Key         `bin:"off=0x0dc, siz=0x11"`
+	DropLevel     uint8                `bin:"off=0x0ed, siz=0x01"`
+	Level         uint8                `bin:"off=0x0ee, siz=0x01"`
+	GenerationV2  internal.Generation  `bin:"off=0x0ef, siz=0x08"`
+	UUID          util.UUID            `bin:"off=0x0f7, siz=0x10"`
+	ParentUUID    util.UUID            `bin:"off=0x107, siz=0x10"`
+	ReceivedUUID  util.UUID            `bin:"off=0x117, siz=0x10"`
+	CTransID      int64                `bin:"off=0x127, siz=0x08"`
+	OTransID      int64                `bin:"off=0x12f, siz=0x08"`
+	STransID      int64                `bin:"off=0x137, siz=0x08"`
+	RTransID      int64                `bin:"off=0x13f, siz=0x08"`
+	CTime         internal.Time        `bin:"off=0x147, siz=0x0c"`
+	OTime         internal.Time        `bin:"off=0x153, siz=0x0c"`
+	STime         internal.Time        `bin:"off=0x15f, siz=0x0c"`
+	RTime         internal.Time        `bin:"off=0x16b, siz=0x0c"`
+	GlobalTreeID  internal.ObjID       `bin:"off=0x177, siz=0x08"`
+	Reserved      [7]int64             `bin:"off=0x17f, siz=0x38"`
+	binstruct.End `bin:"off=0x1b7"`
+}
+
+type RootFlags uint64
+
+const (
+	ROOT_SUBVOL_RDONLY = RootFlags(1 << iota)
+)
+
+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, rootFlagNames, util.HexLower) }