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tty: pty - Move TIOCPKT handling into pty.c 

Since this ioctl is for pty devices only move it to pty.c.

v2:
 - drop PTY_TYPE_MASTER test since it's master peer
   ioctl anyway (by jslaby@)

Suggested-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
CC: "H. Peter Anvin" <hpa@zytor.com>
CC: Pavel Emelyanov <xemul@parallels.com>
CC: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Cyrill Gorcunov 2012-10-24 23:43:20 +04:00 committed by Greg Kroah-Hartman
parent ab72fa5523
commit 06026d911c
2 changed files with 26 additions and 21 deletions
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26
drivers/tty/pty.c
View File

@ -171,6 +171,28 @@ static int pty_set_lock(struct tty_struct *tty, int __user *arg)
return 0; return 0;
} }
/* Set the packet mode on a pty */
static int pty_set_pktmode(struct tty_struct *tty, int __user *arg)
{
unsigned long flags;
int pktmode;
if (get_user(pktmode, arg))
return -EFAULT;
spin_lock_irqsave(&tty->ctrl_lock, flags);
if (pktmode) {
if (!tty->packet) {
tty->packet = 1;
tty->link->ctrl_status = 0;
}
} else
tty->packet = 0;
spin_unlock_irqrestore(&tty->ctrl_lock, flags);
return 0;
}
/* Send a signal to the slave */ /* Send a signal to the slave */
static int pty_signal(struct tty_struct *tty, int sig) static int pty_signal(struct tty_struct *tty, int sig)
{ {
@ -398,6 +420,8 @@ static int pty_bsd_ioctl(struct tty_struct *tty,
switch (cmd) { switch (cmd) {
case TIOCSPTLCK: /* Set PT Lock (disallow slave open) */ case TIOCSPTLCK: /* Set PT Lock (disallow slave open) */
return pty_set_lock(tty, (int __user *) arg); return pty_set_lock(tty, (int __user *) arg);
case TIOCPKT: /* Set PT packet mode */
return pty_set_pktmode(tty, (int __user *)arg);
case TIOCSIG: /* Send signal to other side of pty */ case TIOCSIG: /* Send signal to other side of pty */
return pty_signal(tty, (int) arg); return pty_signal(tty, (int) arg);
} }
@ -512,6 +536,8 @@ static int pty_unix98_ioctl(struct tty_struct *tty,
switch (cmd) { switch (cmd) {
case TIOCSPTLCK: /* Set PT Lock (disallow slave open) */ case TIOCSPTLCK: /* Set PT Lock (disallow slave open) */
return pty_set_lock(tty, (int __user *)arg); return pty_set_lock(tty, (int __user *)arg);
case TIOCPKT: /* Set PT packet mode */
return pty_set_pktmode(tty, (int __user *)arg);
case TIOCGPTN: /* Get PT Number */ case TIOCGPTN: /* Get PT Number */
return put_user(tty->index, (unsigned int __user *)arg); return put_user(tty->index, (unsigned int __user *)arg);
case TIOCSIG: /* Send signal to other side of pty */ case TIOCSIG: /* Send signal to other side of pty */

21
drivers/tty/tty_ioctl.c
View File

@ -1118,7 +1118,6 @@ EXPORT_SYMBOL_GPL(tty_perform_flush);
int n_tty_ioctl_helper(struct tty_struct *tty, struct file *file, int n_tty_ioctl_helper(struct tty_struct *tty, struct file *file,
unsigned int cmd, unsigned long arg) unsigned int cmd, unsigned long arg)
{ {
unsigned long flags;
int retval; int retval;
switch (cmd) { switch (cmd) {
@ -1153,26 +1152,6 @@ int n_tty_ioctl_helper(struct tty_struct *tty, struct file *file,
return 0; return 0;
case TCFLSH: case TCFLSH:
return tty_perform_flush(tty, arg); return tty_perform_flush(tty, arg);
case TIOCPKT:
{
int pktmode;
if (tty->driver->type != TTY_DRIVER_TYPE_PTY ||
tty->driver->subtype != PTY_TYPE_MASTER)
return -ENOTTY;
if (get_user(pktmode, (int __user *) arg))
return -EFAULT;
spin_lock_irqsave(&tty->ctrl_lock, flags);
if (pktmode) {
if (!tty->packet) {
tty->packet = 1;
tty->link->ctrl_status = 0;
}
} else
tty->packet = 0;
spin_unlock_irqrestore(&tty->ctrl_lock, flags);
return 0;
}
default: default:
/* Try the mode commands */ /* Try the mode commands */
return tty_mode_ioctl(tty, file, cmd, arg); return tty_mode_ioctl(tty, file, cmd, arg);