winsize            40 include/asm-xtensa/ioctls.h #define TIOCSWINSZ	_IOW('t', 103, struct winsize)
winsize            41 include/asm-xtensa/ioctls.h #define TIOCGWINSZ	_IOR('t', 104, struct winsize)
winsize           229 include/linux/tty.h 	struct winsize winsize;		/* termios mutex */
winsize           262 include/linux/tty_driver.h 				struct winsize *ws);