107 	 * Blocked signals are never ignored, since the  in sig_ignored()
111 	if (sigismember(&t->blocked, sig) || sigismember(&t->real_blocked, sig))  in sig_ignored()
127  * signals, globally pending signals, and blocked signals.
129 static inline bool has_pending_signals(sigset_t *signal, sigset_t *blocked)  in has_pending_signals()  argument
137 			ready |= signal->sig[i] &~ blocked->sig[i];  in has_pending_signals()
140 	case 4: ready  = signal->sig[3] &~ blocked->sig[3];  in has_pending_signals()
141 		ready |= signal->sig[2] &~ blocked->sig[2];  in has_pending_signals()
142 		ready |= signal->sig[1] &~ blocked->sig[1];  in has_pending_signals()
143 		ready |= signal->sig[0] &~ blocked->sig[0];  in has_pending_signals()
146 	case 2: ready  = signal->sig[1] &~ blocked->sig[1];  in has_pending_signals()
147 		ready |= signal->sig[0] &~ blocked->sig[0];  in has_pending_signals()
150 	case 1: ready  = signal->sig[0] &~ blocked->sig[0];  in has_pending_signals()
160 	    PENDING(&t->pending, &t->blocked) ||  in recalc_sigpending_tsk()
161 	    PENDING(&t->signal->shared_pending, &t->blocked) ||  in recalc_sigpending_tsk()
715 	if (!((pending->signal.sig[0] & ~tsk->blocked.sig[0]) & SYNCHRONOUS_MASK))  in dequeue_synchronous_signal()
757  * goes through ->blocked
979 	if (sigismember(&p->blocked, sig))  in wants_signal()
1318  * since we do not want to have a signal handler that was blocked
1319  * be invoked when user space had explicitly blocked it.
1329 	int ret, blocked, ignored;  in force_sig_info_to_task()  local
1336 	blocked = sigismember(&t->blocked, sig);  in force_sig_info_to_task()
1337 	if (blocked || ignored || (handler != HANDLER_CURRENT)) {  in force_sig_info_to_task()
1341 		if (blocked)  in force_sig_info_to_task()
1342 			sigdelset(&t->blocked, sig);  in force_sig_info_to_task()
1352 	/* This can happen if the signal was already pending and blocked */  in force_sig_info_to_task()
1822 	 * process if SIGTRAP is blocked, however, delivering the signal  in send_sig_perf()
1827 	info.si_perf_flags = sigismember(&current->blocked, info.si_signo) ?  in send_sig_perf()
2128 		 * blocked sys_wait4 might now return -ECHILD.  in do_notify_parent()
2651 	/* If the (new) signal is now blocked, requeue it.  */  in ptrace_signal()
2652 	if (sigismember(&current->blocked, signr) ||  in ptrace_signal()
2798 			signr = dequeue_signal(&current->blocked, &ksig->info, &type);  in get_signal()
2932  * signal_delivered - called after signal delivery to update blocked signals
2937  * delivered. It updates the blocked signals accordingly (@ksig->ka.sa.sa_mask
2938  * is always blocked), and the signal itself is blocked unless %SA_NODEFER
2943 	sigset_t blocked;  in signal_delivered()  local
2951 	sigorsets(&blocked, &current->blocked, &ksig->ka.sa.sa_mask);  in signal_delivered()
2953 		sigaddset(&blocked, ksig->sig);  in signal_delivered()
2954 	set_current_blocked(&blocked);  in signal_delivered()
2987 		if (!has_pending_signals(&retarget, &t->blocked))  in retarget_shared_pending()
2990 		sigandsets(&retarget, &retarget, &t->blocked);  in retarget_shared_pending()
3031 	unblocked = tsk->blocked;  in exit_signals()
3074 		/* A set of now blocked but previously unblocked signals. */  in __set_task_blocked()
3075 		sigandnsets(&newblocked, newset, &current->blocked);  in __set_task_blocked()
3078 	tsk->blocked = *newset;  in __set_task_blocked()
3083  * set_current_blocked - change current->blocked mask
3086  * It is wrong to change ->blocked directly, this helper should be used
3101 	 * to do. The current->blocked shouldn't be modified by other task.  in __set_current_blocked()
3103 	if (sigequalsets(&tsk->blocked, newset))  in __set_current_blocked()
3124 	/* Lockless, only current can change ->blocked, never from irq */  in sigprocmask()
3126 		*oldset = tsk->blocked;  in sigprocmask()
3130 		sigorsets(&newset, &tsk->blocked, set);  in sigprocmask()
3133 		sigandnsets(&newset, &tsk->blocked, set);  in sigprocmask()
3168 	current->saved_sigmask = current->blocked;  in set_user_sigmask()
3188 	current->saved_sigmask = current->blocked;  in set_compat_user_sigmask()
3196  *  sys_rt_sigprocmask - change the list of currently blocked signals
3212 	old_set = current->blocked;  in SYSCALL_DEFINE4()
3236 	sigset_t old_set = current->blocked;  in COMPAT_SYSCALL_DEFINE4()
3265 	sigandsets(set, &current->blocked, set);  in do_sigpending()
3270  *			while blocked
3660 		tsk->real_blocked = tsk->blocked;  in do_sigtimedwait()
3661 		sigandsets(&tsk->blocked, &tsk->blocked, &mask);  in do_sigtimedwait()
4215 		 *   whether or not it is blocked."  in do_sigaction()
4220 		 *   be discarded, whether or not it is blocked"  in do_sigaction()
4436  *  sys_sigprocmask - examine and change blocked signals
4451 	old_set = current->blocked.sig[0];  in SYSCALL_DEFINE3()
4457 		new_blocked = current->blocked;  in SYSCALL_DEFINE3()
4650 	return current->blocked.sig[0];  in SYSCALL_DEFINE0()
4655 	int old = current->blocked.sig[0];  in SYSCALL_DEFINE1()
4699 	current->saved_sigmask = current->blocked;  in sigsuspend()
4747 	sigset_t blocked;  in SYSCALL_DEFINE1()  local
4748 	siginitset(&blocked, mask);  in SYSCALL_DEFINE1()
4749 	return sigsuspend(&blocked);  in SYSCALL_DEFINE1()
4755 	sigset_t blocked;  in SYSCALL_DEFINE3()  local
4756 	siginitset(&blocked, mask);  in SYSCALL_DEFINE3()
4757 	return sigsuspend(&blocked);  in SYSCALL_DEFINE3()