Re: Linux 2.4.21-rc3, writing to /dev/console returns ESPIPE

[viro@parcelfarce.linux.theplanet.co.uk]

On Sun, May 25, 2003 at 12:39:12PM +0100, viro@parcelfarce.linux.theplanet.co.uk wrote:
> On Sun, May 25, 2003 at 12:22:14PM +0100, Mitch@0Bits.COM wrote:
> > The checkin on linux-2.4.21-rc3/drivers/char/tty_io.c
> > 
> > +       /* Can't seek (pwrite) on ttys.  */
> > +       if (ppos != &file->f_pos)
> > +               return -ESPIPE;
> > 
> > should not be there in my opinion.
> 
> s/not be/be not/

Grrr....  Correct patch follows:

--- drivers/char/tty_io.c	Sat May 17 11:14:02 2003
+++ /tmp/tty_io.c	Sun May 25 07:49:08 2003
@@ -751,6 +751,10 @@
 	struct tty_struct * tty;
 	struct inode *inode = file->f_dentry->d_inode;
 
+	/* Can't seek (pwrite) on ttys.  */
+	if (ppos != &file->f_pos)
+		return -ESPIPE;
+
 	/*
 	 *      For now, we redirect writes from /dev/console as
 	 *      well as /dev/tty0.
@@ -770,15 +774,11 @@
 		spin_unlock(&redirect_lock);
 
 		if (p) {
-			ssize_t res = p->f_op->write(p, buf, count, ppos);
+			ssize_t res = p->f_op->write(p, buf, count, &p->f_pos);
 			fput(p);
 			return res;
 		}
 	}
-
-	/* Can't seek (pwrite) on ttys.  */
-	if (ppos != &file->f_pos)
-		return -ESPIPE;
 
 	tty = (struct tty_struct *)file->private_data;
 	if (tty_paranoia_check(tty, inode->i_rdev, "tty_write"))