Fix ext2 buffer overflow in r2_sbu_grub_memmove
grub_ext2_read_symlink (grub_fshelp_node_t node)
{
  char *symlink;
  struct grub_fshelp_node *diro = node;

  if (! diro->inode_read)
    {
      grub_ext2_read_inode (diro->data, diro->ino, &diro->inode);
      if (grub_errno)
	return 0;
    }

  symlink = grub_malloc (grub_le_to_cpu32 (diro->inode.size) + 1);
  if (! symlink)
    return 0;

  /* If the filesize of the symlink is bigger than
     60 the symlink is stored in a separate block,
     otherwise it is stored in the inode.  */
  if (grub_le_to_cpu32 (diro->inode.size) <= 60)
    grub_strncpy (symlink,
		  diro->inode.symlink,
		  grub_le_to_cpu32 (diro->inode.size));
  else
    {
      grub_ext2_read_file (diro, 0, 0, 0, 0,
			   grub_le_to_cpu32 (diro->inode.size),
			   symlink);
      if (grub_errno)
	{
	  grub_free (symlink);
	  return 0;
	}
    }

  symlink[grub_le_to_cpu32 (diro->inode.size)] = '\0';
  return symlink;
}

grub_ext2_read_symlink (grub_fshelp_node_t node)
{
  char *symlink;
  struct grub_fshelp_node *diro = node;

  if (! diro->inode_read)
    {
      grub_ext2_read_inode (diro->data, diro->ino, &diro->inode);
      if (grub_errno)
	return 0;
    }

  symlink = grub_malloc (grub_le_to_cpu32 (diro->inode.size) + 1);
  if (! symlink)
    return 0;

  /* If the filesize of the symlink is bigger than
     60 the symlink is stored in a separate block,
     otherwise it is stored in the inode.  */
  if (grub_le_to_cpu32 (diro->inode.size) <= 60)
    grub_strncpy (symlink,
		  diro->inode.symlink,
		  grub_le_to_cpu32 (diro->inode.size));
  else
    {
      grub_ext2_read_file (diro, 0, 0, 0, 0,
			   grub_le_to_cpu32 (diro->inode.size),
			   symlink);
      if (grub_errno)
	{
	  grub_free (symlink);
	  return 0;
	}
    }

  symlink[grub_le_to_cpu32 (diro->inode.size)] = '\0';
  return symlink;
}
