8 #include <linux/signal.h>
9 #include <linux/sched/signal.h>
26  *	not in the foreground, send a SIGTTOU.  If the signal is blocked or
37 	if (current->signal->tty != tty)  in __tty_check_change()
78 	tty = p->signal->tty;  in proc_clear_tty()
79 	p->signal->tty = NULL;  in proc_clear_tty()
108 	if (current->signal->tty) {  in __proc_set_tty()
110 			  current->signal->tty->name);  in __proc_set_tty()
111 		tty_kref_put(current->signal->tty);  in __proc_set_tty()
113 	put_pid(current->signal->tty_old_pgrp);  in __proc_set_tty()
114 	current->signal->tty = tty_kref_get(tty);  in __proc_set_tty()
115 	current->signal->tty_old_pgrp = NULL;  in __proc_set_tty()
132 	if (current->signal->leader &&  in tty_open_proc_set_tty()
133 	    !current->signal->tty &&  in tty_open_proc_set_tty()
162 	tty = tty_kref_get(current->signal->tty);  in get_current_tty()
182  *	@exit_session: if non-zero, signal all foreground group processes
185  *	Optionally, signal all processes in the foreground process group.
201 			if (p->signal->tty == tty) {  in tty_signal_session_leader()
202 				p->signal->tty = NULL;  in tty_signal_session_leader()
207 			if (!p->signal->leader) {  in tty_signal_session_leader()
213 			put_pid(p->signal->tty_old_pgrp);  /* A noop */  in tty_signal_session_leader()
217 				p->signal->tty_old_pgrp = get_pid(tty->pgrp);  in tty_signal_session_leader()
253  *		  ->siglock is taken to protect ->signal/->sighand
255  *		    ->siglock is taken to protect ->signal/->sighand
261 	if (!current->signal->leader)  in disassociate_ctty()
282 		old_pgrp = current->signal->tty_old_pgrp;  in disassociate_ctty()
283 		current->signal->tty_old_pgrp = NULL;  in disassociate_ctty()
294 	put_pid(current->signal->tty_old_pgrp);  in disassociate_ctty()
295 	current->signal->tty_old_pgrp = NULL;  in disassociate_ctty()
296 	tty = tty_kref_get(current->signal->tty);  in disassociate_ctty()
313 	/* Now clear signal->tty under the lock */  in disassociate_ctty()
344  *		Takes ->siglock() when updating signal->tty
353 	if (current->signal->leader && (task_session(current) == tty->session))  in tiocsctty()
360 	if (!current->signal->leader || current->signal->tty) {  in tiocsctty()
444  *	Locking: none. Reference to current->signal->tty is safe.
454 	if (tty == real_tty && current->signal->tty != real_tty)  in tiocgpgrp()
490 	if (!current->signal->tty ||  in tiocspgrp()
491 	    (current->signal->tty != real_tty) ||  in tiocspgrp()
532 	if (tty == real_tty && current->signal->tty != real_tty)  in tiocgsid()
559 		if (current->signal->tty != tty)  in tty_jobctrl_ioctl()