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tty: TIOCGSOFTCAR/SSOFTCAR on pty is wron

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The termios settings ioctls on a pty should affect the bound tty side not
the pty. The SOFTCAR ioctls use the wrong device file.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alan Cox 2008-08-26 19:52:47 +01:00 committed by Linus Torvalds
parent 325a9a3d39
commit f753f3272b
1 changed files with 4 additions and 2 deletions
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6
drivers/char/tty_ioctl.c
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@ -937,12 +937,14 @@ int tty_mode_ioctl(struct tty_struct *tty, struct file *file,
return 0;
#endif
case TIOCGSOFTCAR:
return put_user(C_CLOCAL(tty) ? 1 : 0,
/* FIXME: for correctness we may need to take the termios
lock here - review */
return put_user(C_CLOCAL(real_tty) ? 1 : 0,
(int __user *)arg);
case TIOCSSOFTCAR:
if (get_user(arg, (unsigned int __user *) arg))
return -EFAULT;
return tty_change_softcar(tty, arg);
return tty_change_softcar(real_tty, arg);
default:
return -ENOIOCTLCMD;
}