Merge pull request #4155 from crosbymichael/remove-reflink

Remove unused reflink files

reflink_copy_linux.go

@@ -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
-}

reflink_copy_unsupported.go

@@ -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
-}