58 	return t->sighand->action[sig - 1].sa.sa_handler;  in sig_handler()
469 		t->sighand->action[i].sa.sa_handler = SIG_IGN;  in ignore_signals()
484 		if (force_default || ka->sa.sa_handler != SIG_IGN)  in flush_signal_handlers()
485 			ka->sa.sa_handler = SIG_DFL;  in flush_signal_handlers()
497 	void __user *handler = tsk->sighand->action[sig-1].sa.sa_handler;  in unhandled_signal()
1168 	ignored = action->sa.sa_handler == SIG_IGN;  in force_sig_info()
1171 		action->sa.sa_handler = SIG_DFL;  in force_sig_info()
1177 	if (action->sa.sa_handler == SIG_DFL)  in force_sig_info()
1452 		p->sighand->action[sig - 1].sa.sa_handler = SIG_DFL;  in force_sigsegv()
1633 	    (psig->action[SIGCHLD-1].sa.sa_handler == SIG_IGN ||  in do_notify_parent()
1651 		if (psig->action[SIGCHLD-1].sa.sa_handler == SIG_IGN)  in do_notify_parent()
1722 	if (sighand->action[SIGCHLD-1].sa.sa_handler != SIG_IGN &&  in do_notify_parent_cldstop()
2216 		if (ka->sa.sa_handler == SIG_IGN) /* Do nothing.  */  in get_signal()
2218 		if (ka->sa.sa_handler != SIG_DFL) {  in get_signal()
2223 				ka->sa.sa_handler = SIG_DFL;  in get_signal()
3032 	current->sighand->action[sig - 1].sa.sa_handler = action;  in kernel_sigaction()
3343 		ret = get_user(handler, &act->sa_handler);  in COMPAT_SYSCALL_DEFINE4()
3344 		new_ka.sa.sa_handler = compat_ptr(handler);  in COMPAT_SYSCALL_DEFINE4()
3359 		ret = put_user(ptr_to_compat(old_ka.sa.sa_handler),   in COMPAT_SYSCALL_DEFINE4()
3360 			       &oact->sa_handler);  in COMPAT_SYSCALL_DEFINE4()
3384 		    __get_user(new_ka.sa.sa_handler, &act->sa_handler) ||  in SYSCALL_DEFINE3()
3399 		    __put_user(old_ka.sa.sa_handler, &oact->sa_handler) ||  in SYSCALL_DEFINE3()
3421 		    __get_user(handler, &act->sa_handler) ||  in COMPAT_SYSCALL_DEFINE3()
3430 		new_ka.sa.sa_handler = compat_ptr(handler);  in COMPAT_SYSCALL_DEFINE3()
3439 		    __put_user(ptr_to_compat(old_ka.sa.sa_handler),  in COMPAT_SYSCALL_DEFINE3()
3440 			       &oact->sa_handler) ||  in COMPAT_SYSCALL_DEFINE3()
3483 	new_sa.sa.sa_handler = handler;  in SYSCALL_DEFINE2()
3489 	return ret ? ret : (unsigned long)old_sa.sa.sa_handler;  in SYSCALL_DEFINE2()