8 #include <linux/signal.h>
9 #include <linux/sched/signal.h>
25  *	@sig: signal to send
28  *	not in the foreground, send a SIGTTOU.  If the signal is blocked or
39 	if (current->signal->tty != tty)  in __tty_check_change()
81 	tty = p->signal->tty;  in proc_clear_tty()
82 	p->signal->tty = NULL;  in proc_clear_tty()
112 	if (current->signal->tty) {  in __proc_set_tty()
114 			  current->signal->tty->name);  in __proc_set_tty()
115 		tty_kref_put(current->signal->tty);  in __proc_set_tty()
117 	put_pid(current->signal->tty_old_pgrp);  in __proc_set_tty()
118 	current->signal->tty = tty_kref_get(tty);  in __proc_set_tty()
119 	current->signal->tty_old_pgrp = NULL;  in __proc_set_tty()
136 	if (current->signal->leader &&  in tty_open_proc_set_tty()
137 	    !current->signal->tty &&  in tty_open_proc_set_tty()
166 	tty = tty_kref_get(current->signal->tty);  in get_current_tty()
187  *	@exit_session: if non-zero, signal all foreground group processes
190  *	Optionally, signal all processes in the foreground process group.
206 			if (p->signal->tty == tty) {  in tty_signal_session_leader()
207 				p->signal->tty = NULL;  in tty_signal_session_leader()
214 			if (!p->signal->leader) {  in tty_signal_session_leader()
220 			put_pid(p->signal->tty_old_pgrp);  /* A noop */  in tty_signal_session_leader()
224 				p->signal->tty_old_pgrp =  in tty_signal_session_leader()
261  *		  ->siglock is taken to protect ->signal/->sighand
263  *		    ->siglock is taken to protect ->signal/->sighand
269 	if (!current->signal->leader)  in disassociate_ctty()
292 		old_pgrp = current->signal->tty_old_pgrp;  in disassociate_ctty()
293 		current->signal->tty_old_pgrp = NULL;  in disassociate_ctty()
319 	 * current->signal->tty_old_pgrp in a race condition, and  in disassociate_ctty()
320 	 * cause pid memleak. Release current->signal->tty_old_pgrp  in disassociate_ctty()
324 	put_pid(current->signal->tty_old_pgrp);  in disassociate_ctty()
325 	current->signal->tty_old_pgrp = NULL;  in disassociate_ctty()
328 	/* Now clear signal->tty under the lock */  in disassociate_ctty()
363  *		Takes ->siglock() when updating signal->tty
372 	if (current->signal->leader &&  in tiocsctty()
380 	if (!current->signal->leader || current->signal->tty) {  in tiocsctty()
464  *	Locking: none. Reference to current->signal->tty is safe.
474 	if (tty == real_tty && current->signal->tty != real_tty)  in tiocgpgrp()
510 	if (!current->signal->tty ||  in tiocspgrp()
511 	    (current->signal->tty != real_tty) ||  in tiocspgrp()
552 	if (tty == real_tty && current->signal->tty != real_tty)  in tiocgsid()
579 		if (current->signal->tty != tty)  in tty_jobctrl_ioctl()