3101 int do_sigaction(int sig, struct k_sigaction *act, struct k_sigaction *oact)  in do_sigaction()  argument
3107 	if (!valid_signal(sig) || sig < 1 || (act && sig_kernel_only(sig)))  in do_sigaction()
3116 	if (act) {  in do_sigaction()
3117 		sigdelsetmask(&act->sa.sa_mask,  in do_sigaction()
3119 		*k = *act;  in do_sigaction()
3353 		const struct sigaction __user *, act,  in SYSCALL_DEFINE4()
3364 	if (act) {  in SYSCALL_DEFINE4()
3365 		if (copy_from_user(&new_sa.sa, act, sizeof(new_sa.sa)))  in SYSCALL_DEFINE4()
3369 	ret = do_sigaction(sig, act ? &new_sa : NULL, oact ? &old_sa : NULL);  in SYSCALL_DEFINE4()
3380 		const struct compat_sigaction __user *, act,  in COMPAT_SYSCALL_DEFINE4()
3395 	if (act) {  in COMPAT_SYSCALL_DEFINE4()
3397 		ret = get_user(handler, &act->sa_handler);  in COMPAT_SYSCALL_DEFINE4()
3400 		ret |= get_user(restorer, &act->sa_restorer);  in COMPAT_SYSCALL_DEFINE4()
3403 		ret |= copy_from_user(&mask, &act->sa_mask, sizeof(mask));  in COMPAT_SYSCALL_DEFINE4()
3404 		ret |= get_user(new_ka.sa.sa_flags, &act->sa_flags);  in COMPAT_SYSCALL_DEFINE4()
3410 	ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);  in COMPAT_SYSCALL_DEFINE4()
3429 		const struct old_sigaction __user *, act,  in SYSCALL_DEFINE3()
3435 	if (act) {  in SYSCALL_DEFINE3()
3437 		if (!access_ok(VERIFY_READ, act, sizeof(*act)) ||  in SYSCALL_DEFINE3()
3438 		    __get_user(new_ka.sa.sa_handler, &act->sa_handler) ||  in SYSCALL_DEFINE3()
3439 		    __get_user(new_ka.sa.sa_restorer, &act->sa_restorer) ||  in SYSCALL_DEFINE3()
3440 		    __get_user(new_ka.sa.sa_flags, &act->sa_flags) ||  in SYSCALL_DEFINE3()
3441 		    __get_user(mask, &act->sa_mask))  in SYSCALL_DEFINE3()
3449 	ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);  in SYSCALL_DEFINE3()
3465 		const struct compat_old_sigaction __user *, act,  in COMPAT_SYSCALL_DEFINE3()
3473 	if (act) {  in COMPAT_SYSCALL_DEFINE3()
3474 		if (!access_ok(VERIFY_READ, act, sizeof(*act)) ||  in COMPAT_SYSCALL_DEFINE3()
3475 		    __get_user(handler, &act->sa_handler) ||  in COMPAT_SYSCALL_DEFINE3()
3476 		    __get_user(restorer, &act->sa_restorer) ||  in COMPAT_SYSCALL_DEFINE3()
3477 		    __get_user(new_ka.sa.sa_flags, &act->sa_flags) ||  in COMPAT_SYSCALL_DEFINE3()
3478 		    __get_user(mask, &act->sa_mask))  in COMPAT_SYSCALL_DEFINE3()
3489 	ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);  in COMPAT_SYSCALL_DEFINE3()