svn commit: r202553 - in stable/8/sys: kern sys

Ed Schouten ed at FreeBSD.org
Mon Jan 18 09:04:54 UTC 2010


Author: ed
Date: Mon Jan 18 09:04:53 2010
New Revision: 202553
URL: http://svn.freebsd.org/changeset/base/202553

Log:
  MFC r201532:
  
    Make TIOCSTI work again.
  
    It looks like I didn't implement this when I imported MPSAFE TTY.
    Applications like mail(1) still use this. I think it's conceptually bad.
  
    Tested by:    Pete French <petefrench ticketswitch com>

Modified:
  stable/8/sys/kern/tty.c
  stable/8/sys/kern/tty_compat.c
  stable/8/sys/kern/tty_pts.c
  stable/8/sys/sys/tty.h
Directory Properties:
  stable/8/sys/   (props changed)
  stable/8/sys/amd64/include/xen/   (props changed)
  stable/8/sys/cddl/contrib/opensolaris/   (props changed)
  stable/8/sys/contrib/dev/acpica/   (props changed)
  stable/8/sys/contrib/pf/   (props changed)
  stable/8/sys/dev/xen/xenpci/   (props changed)

Modified: stable/8/sys/kern/tty.c
==============================================================================
--- stable/8/sys/kern/tty.c	Mon Jan 18 06:48:24 2010	(r202552)
+++ stable/8/sys/kern/tty.c	Mon Jan 18 09:04:53 2010	(r202553)
@@ -504,12 +504,12 @@ ttydev_ioctl(struct cdev *dev, u_long cm
 	case TIOCSPGRP:
 	case TIOCSTART:
 	case TIOCSTAT:
+	case TIOCSTI:
 	case TIOCSTOP:
 	case TIOCSWINSZ:
 #if 0
 	case TIOCSDRAINWAIT:
 	case TIOCSETD:
-	case TIOCSTI:
 #endif
 #ifdef COMPAT_43TTY
 	case  TIOCLBIC:
@@ -558,7 +558,7 @@ ttydev_ioctl(struct cdev *dev, u_long cm
 			new->c_ospeed = old->c_ospeed;
 	}
 
-	error = tty_ioctl(tp, cmd, data, td);
+	error = tty_ioctl(tp, cmd, data, fflag, td);
 done:	tty_unlock(tp);
 
 	return (error);
@@ -1330,7 +1330,8 @@ tty_flush(struct tty *tp, int flags)
 }
 
 static int
-tty_generic_ioctl(struct tty *tp, u_long cmd, void *data, struct thread *td)
+tty_generic_ioctl(struct tty *tp, u_long cmd, void *data, int fflag,
+    struct thread *td)
 {
 	int error;
 
@@ -1657,17 +1658,26 @@ tty_generic_ioctl(struct tty *tp, u_long
 	case TIOCSTAT:
 		tty_info(tp);
 		return (0);
+	case TIOCSTI:
+		if ((fflag & FREAD) == 0 && priv_check(td, PRIV_TTY_STI))
+			return (EPERM);
+		if (!tty_is_ctty(tp, td->td_proc) &&
+		    priv_check(td, PRIV_TTY_STI))
+			return (EACCES);
+		ttydisc_rint(tp, *(char *)data, 0);
+		ttydisc_rint_done(tp);
+		return (0);
 	}
 
 #ifdef COMPAT_43TTY
-	return tty_ioctl_compat(tp, cmd, data, td);
+	return tty_ioctl_compat(tp, cmd, data, fflag, td);
 #else /* !COMPAT_43TTY */
 	return (ENOIOCTL);
 #endif /* COMPAT_43TTY */
 }
 
 int
-tty_ioctl(struct tty *tp, u_long cmd, void *data, struct thread *td)
+tty_ioctl(struct tty *tp, u_long cmd, void *data, int fflag, struct thread *td)
 {
 	int error;
 
@@ -1678,7 +1688,7 @@ tty_ioctl(struct tty *tp, u_long cmd, vo
 	
 	error = ttydevsw_ioctl(tp, cmd, data, td);
 	if (error == ENOIOCTL)
-		error = tty_generic_ioctl(tp, cmd, data, td);
+		error = tty_generic_ioctl(tp, cmd, data, fflag, td);
 
 	return (error);
 }

Modified: stable/8/sys/kern/tty_compat.c
==============================================================================
--- stable/8/sys/kern/tty_compat.c	Mon Jan 18 06:48:24 2010	(r202552)
+++ stable/8/sys/kern/tty_compat.c	Mon Jan 18 09:04:53 2010	(r202553)
@@ -180,7 +180,8 @@ ttsetcompat(struct tty *tp, u_long *com,
 
 /*ARGSUSED*/
 int
-tty_ioctl_compat(struct tty *tp, u_long com, caddr_t data, struct thread *td)
+tty_ioctl_compat(struct tty *tp, u_long com, caddr_t data, int fflag,
+    struct thread *td)
 {
 	switch (com) {
 	case TIOCSETP:
@@ -196,7 +197,7 @@ tty_ioctl_compat(struct tty *tp, u_long 
 		term = tp->t_termios;
 		if ((error = ttsetcompat(tp, &com, data, &term)) != 0)
 			return error;
-		return tty_ioctl(tp, com, &term, td);
+		return tty_ioctl(tp, com, &term, fflag, td);
 	}
 	case TIOCGETP: {
 		struct sgttyb *sg = (struct sgttyb *)data;
@@ -255,12 +256,13 @@ tty_ioctl_compat(struct tty *tp, u_long 
 		int ldisczero = 0;
 
 		return (tty_ioctl(tp, TIOCSETD,
-			*(int *)data == 2 ? (caddr_t)&ldisczero : data, td));
+			*(int *)data == 2 ? (caddr_t)&ldisczero : data,
+			fflag, td));
 	    }
 
 	case OTIOCCONS:
 		*(int *)data = 1;
-		return (tty_ioctl(tp, TIOCCONS, data, td));
+		return (tty_ioctl(tp, TIOCCONS, data, fflag, td));
 
 	default:
 		return (ENOIOCTL);

Modified: stable/8/sys/kern/tty_pts.c
==============================================================================
--- stable/8/sys/kern/tty_pts.c	Mon Jan 18 06:48:24 2010	(r202552)
+++ stable/8/sys/kern/tty_pts.c	Mon Jan 18 09:04:53 2010	(r202553)
@@ -396,7 +396,7 @@ ptsdev_ioctl(struct file *fp, u_long cmd
 
 	/* Just redirect this ioctl to the slave device. */
 	tty_lock(tp);
-	error = tty_ioctl(tp, cmd, data, td);
+	error = tty_ioctl(tp, cmd, data, fp->f_flag, td);
 	tty_unlock(tp);
 	if (error == ENOIOCTL)
 		error = ENOTTY;

Modified: stable/8/sys/sys/tty.h
==============================================================================
--- stable/8/sys/sys/tty.h	Mon Jan 18 06:48:24 2010	(r202552)
+++ stable/8/sys/sys/tty.h	Mon Jan 18 09:04:53 2010	(r202553)
@@ -182,9 +182,10 @@ void	tty_wakeup(struct tty *tp, int flag
 int	tty_checkoutq(struct tty *tp);
 int	tty_putchar(struct tty *tp, char c);
 
-int	tty_ioctl(struct tty *tp, u_long cmd, void *data, struct thread *td);
-int	tty_ioctl_compat(struct tty *tp, u_long cmd, caddr_t data,
+int	tty_ioctl(struct tty *tp, u_long cmd, void *data, int fflag,
     struct thread *td);
+int	tty_ioctl_compat(struct tty *tp, u_long cmd, caddr_t data,
+    int fflag, struct thread *td);
 void	tty_init_console(struct tty *tp, speed_t speed);
 void	tty_flush(struct tty *tp, int flags);
 void	tty_hiwat_in_block(struct tty *tp);


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