no_sigio           76 arch/um/drivers/chan_user.c 	sigset_t old, no_sigio;
no_sigio           81 arch/um/drivers/chan_user.c 		sigemptyset(&no_sigio);
no_sigio           82 arch/um/drivers/chan_user.c 		sigaddset(&no_sigio, SIGIO);
no_sigio           83 arch/um/drivers/chan_user.c 		if (sigprocmask(SIG_BLOCK, &no_sigio, &old))