Commit d730b301 authored by Léo Grange's avatar Léo Grange
Browse files

add some termios flags and ioctls to get/set termios struct

parent 8ee82f35

interface/fixos/tty.h

+68 −0
Original line number Diff line number Diff line
@@ -64,9 +64,77 @@ struct termios { 
#define ECHOCTL		(1<<9)





/**

 * Flags for input mode (c_iflag field)

 */

#define BRKINT		(1<<0)

#define ICRNL		(1<<1)

#define IGNBRK		(1<<2)

#define IGNCR		(1<<3)

#define IGNPAR		(1<<4)

#define INLCR		(1<<5)

#define INPCK		(1<<6)

#define ISTRIP		(1<<7)

#define IXANY		(1<<8)

#define IXOFF		(1<<9)

#define IXON		(1<<10)

#define PARMRK		(1<<11)





/**

 * Baud rate (internaly set in c_cflag lower byte)

 */

#define BAUD_MASK	(0xFF<<0)

#define B0			0x00

#define B50			0x01

#define B75			0x02

#define B110		0x03

#define B134		0x04

#define B150		0x05

#define B200		0x06

#define B300		0x07

#define B600		0x08

#define B1200		0x09

#define B1800		0x0A

#define B2400		0x0B

#define B4800		0x0C

#define B9600		0x0D

#define B19200		0x0E

#define B38400		0x0F

// TODO non-POSIX, faster baud rates





/**

 * Flags for control modes (c_cflag field)

 */

#define CLOCAL		(1<<8)

#define CSIZE		(3<<9)

#define CS5			(0<<9)

#define CS6			(1<<9)

#define CS7			(2<<9)

#define CS8			(3<<9)

#define CSTOPB		(1<<11)

#define HUPCL		(1<<12)

#define PARENB		(1<<13)

#define PARODD		(1<<14)





/**

 * Flags for output mode (c_oflag field)

 * Everything is defined as XSI extension by POSIX, and not implemented.

 */

#define OPOST		(1<<0)





// IOCTL namespace

#define TTYCTL			IOCTL_NAMESPACE('T', 'T')



/**

 * Get/set the termios struct of a TTY (same as Linux ioctls)

 */

#define TCGETS			IOCTL_R( TTYCTL, 0x0008, const struct termios *)

#define TCSETS			IOCTL_W( TTYCTL, 0x0009, struct termios *)



/**

 * Get/set the window size if available.

 */

sys/tty.c

+7 −9
Original line number Diff line number Diff line
@@ -16,9 +16,9 @@ static const struct termios _tty_default_termios = { 
		0,		// VTIME

	},



	.c_iflag = 0,

	.c_iflag = ICRNL | IGNBRK | IGNPAR,

	.c_oflag = 0,

	.c_cflag = 0,

	.c_cflag = CLOCAL | CS8 | B9600,

	.c_lflag = ICANON | ECHO | ECHOE | ECHOK | ECHONL | ISIG | ECHOCTL

};
@@ -27,25 +27,23 @@ int tty_ioctl(struct tty *tty, int cmd, void *data) { 
	switch(cmd) {

		case TIOCGWINSZ:

			return tty_getwinsize(tty, data);

			break;

		case TIOCSWINSZ:

			return tty_setwinsize(tty, data);

			break;

		case TIOCSCTTY:

			return tty_setctty(tty, (int)data);

			break;

		case TIOCNOTTY:

			return tty_noctty(tty);

			break;

		case TIOCGPGRP:

			return tty_getpgrp(tty, data);

			break;

		case TIOCSPGRP:

			return tty_setpgrp(tty, data);

			break;

		case TIOCGSID:

			return tty_getsid(tty, data);

			break;

		case TCGETS:

			*(struct termios*)data = tty->termios;

			return 0;

		case TCSETS:

			return tty_set_termios(tty, data);

		default:

			return -EFAULT;

	}

sys/tty.h

+18 −0
Original line number Diff line number Diff line
@@ -62,6 +62,14 @@ struct tty_ops { 
	int (*ioctl_setwinsize)(struct tty *tty, const struct winsize *size);

	int (*ioctl_getwinsize)(struct tty *tty, struct winsize *size);



	/**

	 * Called when termios value should be changed.

	 * If non-null, this callback should check and *set* the accepted value

	 * in tty->termios before returning.

	 * Partially accepted change behavior is implementation defined.

	 */

	int (*set_termios)(struct tty *tty, const struct termios *queried);



	// last chance to flush output from a TTY (e.g. after a oops)

	int (*force_flush)(struct tty *tty);

};
@@ -154,6 +162,16 @@ extern inline int tty_getsid(struct tty *tty, pid_t *sid) { 
}





extern inline int tty_set_termios(struct tty *tty, const struct termios *ios)

{

	if(tty->ops->set_termios != NULL) {

		return tty->ops->set_termios(tty, ios);

	}

	tty->termios = *ios;

	return 0;

}





/**

 * Used to dispatch tty-level ioctls using tty->ops and tty data.

 * return special value -EFAULT if ioctl is not tty-level command