Rename the module, mv pkg lib

1 files changed, 32 insertions, 0 deletions

diff --git a/lib/btrfs/btrfsitem/item_devextent.go b/lib/btrfs/btrfsitem/item_devextent.go
new file mode 100644
index 0000000..c346d85
--- /dev/null
+++ b/lib/btrfs/btrfsitem/item_devextent.go
@@ -0,0 +1,32 @@
+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"
+)
+
+// key.objectid = device_id
+// key.offset = physical_addr
+type DevExtent struct { // DEV_EXTENT=204
+	ChunkTree     int64                `bin:"off=0, siz=8"`
+	ChunkObjectID internal.ObjID       `bin:"off=8, siz=8"`
+	ChunkOffset   btrfsvol.LogicalAddr `bin:"off=16, siz=8"`
+	Length        btrfsvol.AddrDelta   `bin:"off=24, siz=8"`
+	ChunkTreeUUID util.UUID            `bin:"off=32, siz=16"`
+	binstruct.End `bin:"off=48"`
+}
+
+func (devext DevExtent) Mapping(key internal.Key) btrfsvol.Mapping {
+	return btrfsvol.Mapping{
+		LAddr: devext.ChunkOffset,
+		PAddr: btrfsvol.QualifiedPhysicalAddr{
+			Dev:  btrfsvol.DeviceID(key.ObjectID),
+			Addr: btrfsvol.PhysicalAddr(key.Offset),
+		},
+		Size:       devext.Length,
+		SizeLocked: true,
+		Flags:      nil,
+	}
+}