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

interface/fixos/tty.h

@@ -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

@@ -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

@@ -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