1831 static int copy_msghdr_from_user(struct msghdr *kmsg,  in copy_msghdr_from_user()  argument
1843 	    __get_user(kmsg->msg_namelen, &umsg->msg_namelen) ||  in copy_msghdr_from_user()
1846 	    __get_user(kmsg->msg_control, &umsg->msg_control) ||  in copy_msghdr_from_user()
1847 	    __get_user(kmsg->msg_controllen, &umsg->msg_controllen) ||  in copy_msghdr_from_user()
1848 	    __get_user(kmsg->msg_flags, &umsg->msg_flags))  in copy_msghdr_from_user()
1852 		kmsg->msg_namelen = 0;  in copy_msghdr_from_user()
1854 	if (kmsg->msg_namelen < 0)  in copy_msghdr_from_user()
1857 	if (kmsg->msg_namelen > sizeof(struct sockaddr_storage))  in copy_msghdr_from_user()
1858 		kmsg->msg_namelen = sizeof(struct sockaddr_storage);  in copy_msghdr_from_user()
1863 	if (uaddr && kmsg->msg_namelen) {  in copy_msghdr_from_user()
1865 			err = move_addr_to_kernel(uaddr, kmsg->msg_namelen,  in copy_msghdr_from_user()
1866 						  kmsg->msg_name);  in copy_msghdr_from_user()
1871 		kmsg->msg_name = NULL;  in copy_msghdr_from_user()
1872 		kmsg->msg_namelen = 0;  in copy_msghdr_from_user()
1878 	kmsg->msg_iocb = NULL;  in copy_msghdr_from_user()
1881 			    UIO_FASTIOV, iov, &kmsg->msg_iter);  in copy_msghdr_from_user()