1822 static int copy_msghdr_from_user(struct msghdr *kmsg,  in copy_msghdr_from_user()  argument
1834 	    __get_user(kmsg->msg_namelen, &umsg->msg_namelen) ||  in copy_msghdr_from_user()
1837 	    __get_user(kmsg->msg_control, &umsg->msg_control) ||  in copy_msghdr_from_user()
1838 	    __get_user(kmsg->msg_controllen, &umsg->msg_controllen) ||  in copy_msghdr_from_user()
1839 	    __get_user(kmsg->msg_flags, &umsg->msg_flags))  in copy_msghdr_from_user()
1843 		kmsg->msg_namelen = 0;  in copy_msghdr_from_user()
1845 	if (kmsg->msg_namelen < 0)  in copy_msghdr_from_user()
1848 	if (kmsg->msg_namelen > sizeof(struct sockaddr_storage))  in copy_msghdr_from_user()
1849 		kmsg->msg_namelen = sizeof(struct sockaddr_storage);  in copy_msghdr_from_user()
1854 	if (uaddr && kmsg->msg_namelen) {  in copy_msghdr_from_user()
1856 			err = move_addr_to_kernel(uaddr, kmsg->msg_namelen,  in copy_msghdr_from_user()
1857 						  kmsg->msg_name);  in copy_msghdr_from_user()
1862 		kmsg->msg_name = NULL;  in copy_msghdr_from_user()
1863 		kmsg->msg_namelen = 0;  in copy_msghdr_from_user()
1869 	kmsg->msg_iocb = NULL;  in copy_msghdr_from_user()
1872 			    UIO_FASTIOV, iov, &kmsg->msg_iter);  in copy_msghdr_from_user()