gboolean tape_rewind(int fd);
gboolean tape_fsf(int fd, guint count);
gboolean tape_bsf(int fd, guint count);
gboolean tape_fsr(int fd, guint count);
gboolean tape_bsr(int fd, guint count);
gboolean tape_rewind(int fd);
gboolean tape_fsf(int fd, guint count);
gboolean tape_bsf(int fd, guint count);
gboolean tape_fsr(int fd, guint count);
gboolean tape_bsr(int fd, guint count);