From 48bceec5a64412ac1b38acab904046808822b9aa Mon Sep 17 00:00:00 2001
From: Michael Crosby <michael@crosbymichael.com>
Date: Fri, 14 Feb 2014 15:32:39 -0800
Subject: [PATCH] Remove unused reflink files Docker-DCO-1.1-Signed-off-by:
 Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 Upstream-commit: 055bfb699bb232c7e490c38d3a71c81870781c74 Component: engine

---
 components/engine/reflink_copy_linux.go       | 55 -------------------
 components/engine/reflink_copy_unsupported.go | 16 ------
 2 files changed, 71 deletions(-)
 delete mode 100644 components/engine/reflink_copy_linux.go
 delete mode 100644 components/engine/reflink_copy_unsupported.go

diff --git a/components/engine/reflink_copy_linux.go b/components/engine/reflink_copy_linux.go
deleted file mode 100644
index 74a0cb98f7..0000000000
--- a/components/engine/reflink_copy_linux.go
+++ /dev/null
@@ -1,55 +0,0 @@
-// +build amd64
-
-package docker
-
-// FIXME: This could be easily rewritten in pure Go
-
-/*
-#include <sys/ioctl.h>
-#include <linux/fs.h>
-#include <errno.h>
-
-// See linux.git/fs/btrfs/ioctl.h
-#define BTRFS_IOCTL_MAGIC 0x94
-#define BTRFS_IOC_CLONE _IOW(BTRFS_IOCTL_MAGIC, 9, int)
-
-int
-btrfs_reflink(int fd_out, int fd_in)
-{
-  int res;
-  res = ioctl(fd_out, BTRFS_IOC_CLONE, fd_in);
-  if (res < 0)
-    return errno;
-  return 0;
-}
-
-*/
-import "C"
-
-import (
-	"io"
-	"os"
-	"syscall"
-)
-
-// FIXME: Move this to btrfs package?
-
-func BtrfsReflink(fd_out, fd_in uintptr) error {
-	res := C.btrfs_reflink(C.int(fd_out), C.int(fd_in))
-	if res != 0 {
-		return syscall.Errno(res)
-	}
-	return nil
-}
-
-func CopyFile(dstFile, srcFile *os.File) error {
-	err := BtrfsReflink(dstFile.Fd(), srcFile.Fd())
-	if err == nil {
-		return nil
-	}
-
-	// Fall back to normal copy
-	// FIXME: Check the return of Copy and compare with dstFile.Stat().Size
-	_, err = io.Copy(dstFile, srcFile)
-	return err
-}
diff --git a/components/engine/reflink_copy_unsupported.go b/components/engine/reflink_copy_unsupported.go
deleted file mode 100644
index 271ed0178f..0000000000
--- a/components/engine/reflink_copy_unsupported.go
+++ /dev/null
@@ -1,16 +0,0 @@
-// +build !linux !amd64
-
-package docker
-
-import (
-	"io"
-	"os"
-)
-
-func CopyFile(dstFile, srcFile *os.File) error {
-	// No BTRFS reflink suppport, Fall back to normal copy
-
-	// FIXME: Check the return of Copy and compare with dstFile.Stat().Size
-	_, err := io.Copy(dstFile, srcFile)
-	return err
-}