73 	return t->sighand->action[sig - 1].sa.sa_handler;  in sig_handler()
533 		t->sighand->action[i].sa.sa_handler = SIG_IGN;  in ignore_signals()
546 	struct k_sigaction *ka = &t->sighand->action[0];  in flush_signal_handlers()
561 	void __user *handler = tsk->sighand->action[sig-1].sa.sa_handler;  in unhandled_signal()
1340 	struct k_sigaction *action;  in force_sig_info_to_task()  local
1344 	action = &t->sighand->action[sig-1];  in force_sig_info_to_task()
1345 	ignored = action->sa.sa_handler == SIG_IGN;  in force_sig_info_to_task()
1348 		action->sa.sa_handler = SIG_DFL;  in force_sig_info_to_task()
1350 			action->sa.sa_flags |= SA_IMMUTABLE;  in force_sig_info_to_task()
1360 	if (action->sa.sa_handler == SIG_DFL &&  in force_sig_info_to_task()
2112 	    (psig->action[SIGCHLD-1].sa.sa_handler == SIG_IGN ||  in do_notify_parent()
2113 	     (psig->action[SIGCHLD-1].sa.sa_flags & SA_NOCLDWAIT))) {  in do_notify_parent()
2130 		if (psig->action[SIGCHLD-1].sa.sa_handler == SIG_IGN)  in do_notify_parent()
2206 	if (sighand->action[SIGCHLD-1].sa.sa_handler != SIG_IGN &&  in do_notify_parent_cldstop()
2207 	    !(sighand->action[SIGCHLD-1].sa.sa_flags & SA_NOCLDSTOP))  in do_notify_parent_cldstop()
2721 				&sighand->action[SIGKILL - 1]);  in get_signal()
2767 		    !(sighand->action[signr -1].sa.sa_flags & SA_IMMUTABLE)) {  in get_signal()
2773 		ka = &sighand->action[signr-1];  in get_signal()
4086 void kernel_sigaction(int sig, __sighandler_t action)  in kernel_sigaction()  argument
4089 	current->sighand->action[sig - 1].sa.sa_handler = action;  in kernel_sigaction()
4090 	if (action == SIG_IGN) {  in kernel_sigaction()
4118 	k = &p->sighand->action[sig-1];  in do_sigaction()