long ibioctl(struct file *filep, unsigned int cmd, unsigned long arg)
{
unsigned int minor = iminor(filep->f_dentry->d_inode);
unsigned int minor = iminor(filep->f_path.dentry);
gpib_board_t *board;
gpib_file_private_t *file_priv = filep->private_data;
long retval = -ENOTTY;
