From 062a2b32e9500107841a52d3a63b9232a1cfde70 Mon Sep 17 00:00:00 2001
From: Alexander Larsson <alexl@redhat.com>
Date: Fri, 13 Sep 2013 16:36:32 +0200
Subject: [PATCH] applyLayer() use btrfs reflinks if availible

We use the new file copy helper which uses btrfs reflinks if availible.
---
 image.go | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/image.go b/image.go
index 2c16aeb6d4..7819873757 100644
--- a/image.go
+++ b/image.go
@@ -284,12 +284,16 @@ func (image *Image) applyLayer(layer, target string) error {
 				}
 				dstFile := os.NewFile(uintptr(fd), targetPath)
 				srcFile, err := os.Open(srcPath)
-				_, err = io.Copy(dstFile, srcFile)
+				if err != nil {
+					_ = dstFile.Close()
+					return err
+				}
+				err = CopyFile(dstFile, srcFile)
+				_ = dstFile.Close()
+				_ = srcFile.Close()
 				if err != nil {
 					return err
 				}
-				_ = srcFile.Close()
-				_ = dstFile.Close()
 			} else {
 				return fmt.Errorf("Unknown type for file %s", srcPath)
 			}