_LINUX_IOR
#define LINUX_TCGETS _LINUX_IOR('t', 19, struct linux_termios)
#define LINUX_TCGETA _LINUX_IOR('t', 23, struct linux_termio)
#define LINUX_TIOCGPGRP _LINUX_IOR('t', 119, int)
#define LINUX_TIOCOUTQ _LINUX_IOR('t', 115, int)
#define LINUX_FIONREAD _LINUX_IOR('f', 127, int)
#define LINUX_TIOCGPTN _LINUX_IOR('T',0x30, unsigned int)
#define LINUX_TIOCGPTN _LINUX_IOR('T', 48, unsigned int)
#define LINUX_TIOCGPTN _LINUX_IOR('T', 48, unsigned int)
#define LINUX_TIOCGPGRP _LINUX_IOR('t', 119, int)
#define LINUX_TIOCGWINSZ _LINUX_IOR('t', 104, struct linux_winsize)
#define LINUX_TCGETS _LINUX_IOR('t', 19, struct linux_termios)
#define LINUX_TCGETA _LINUX_IOR('t', 23, struct linux_termio)
#define LINUX_TIOCGPGRP _LINUX_IOR('t', 119, int)
#define LINUX_TIOCOUTQ _LINUX_IOR('t', 115, int)
#define LINUX_TIOCGWINSZ _LINUX_IOR('t', 104, struct linux_winsize)
#define LINUX_FIONREAD _LINUX_IOR('f', 127, int)
#define LINUX_FDGETPRM _LINUX_IOR(2, 0x04, struct linux_floppy_struct)
_LINUX_IOR(2, 0x0e, struct linux_floppy_max_errors)
#define LINUX_FDGETDRVTYP _LINUX_IOR(2, 0x0f, linux_floppy_drive_name)
_LINUX_IOR(2, 0x11, struct linux_floppy_drive_params)
_LINUX_IOR(2, 0x12, struct linux_floppy_drive_struct)
_LINUX_IOR(2, 0x13, struct linux_floppy_drive_struct)
_LINUX_IOR(2, 0x15, struct linux_floppy_fdc_state)
_LINUX_IOR(2, 0x17, struct linux_floppy_write_errors)
#define LINUX_MTIOCGET _LINUX_IOR('m', 2, struct linux_mtget)
#define LINUX_MTIOCPOS _LINUX_IOR('m', 3, struct linux_mtpos)