443 static int tiocgpgrp(struct tty_struct *tty, struct tty_struct *real_tty, pid_t __user *p)  in tiocgpgrp()  argument
451 	if (tty == real_tty && current->signal->tty != real_tty)  in tiocgpgrp()
453 	pid = tty_get_pgrp(real_tty);  in tiocgpgrp()
470 static int tiocspgrp(struct tty_struct *tty, struct tty_struct *real_tty, pid_t __user *p)  in tiocspgrp()  argument
474 	int retval = tty_check_change(real_tty);  in tiocspgrp()
481 	    (current->signal->tty != real_tty) ||  in tiocspgrp()
482 	    (real_tty->session != task_session(current)))  in tiocspgrp()
498 	put_pid(real_tty->pgrp);  in tiocspgrp()
499 	real_tty->pgrp = get_pid(pgrp);  in tiocspgrp()
517 static int tiocgsid(struct tty_struct *tty, struct tty_struct *real_tty, pid_t __user *p)  in tiocgsid()  argument
523 	if (tty == real_tty && current->signal->tty != real_tty)  in tiocgsid()
525 	if (!real_tty->session)  in tiocgsid()
527 	return put_user(pid_vnr(real_tty->session), p);  in tiocgsid()
534 long tty_jobctrl_ioctl(struct tty_struct *tty, struct tty_struct *real_tty,  in tty_jobctrl_ioctl()  argument
546 		return tiocsctty(real_tty, file, arg);  in tty_jobctrl_ioctl()
548 		return tiocgpgrp(tty, real_tty, p);  in tty_jobctrl_ioctl()
550 		return tiocspgrp(tty, real_tty, p);  in tty_jobctrl_ioctl()
552 		return tiocgsid(tty, real_tty, p);  in tty_jobctrl_ioctl()