2184 static int copy_msghdr_from_user(struct msghdr *kmsg,  in copy_msghdr_from_user()  argument
2195 	kmsg->msg_control = (void __force *)msg.msg_control;  in copy_msghdr_from_user()
2196 	kmsg->msg_controllen = msg.msg_controllen;  in copy_msghdr_from_user()
2197 	kmsg->msg_flags = msg.msg_flags;  in copy_msghdr_from_user()
2199 	kmsg->msg_namelen = msg.msg_namelen;  in copy_msghdr_from_user()
2201 		kmsg->msg_namelen = 0;  in copy_msghdr_from_user()
2203 	if (kmsg->msg_namelen < 0)  in copy_msghdr_from_user()
2206 	if (kmsg->msg_namelen > sizeof(struct sockaddr_storage))  in copy_msghdr_from_user()
2207 		kmsg->msg_namelen = sizeof(struct sockaddr_storage);  in copy_msghdr_from_user()
2212 	if (msg.msg_name && kmsg->msg_namelen) {  in copy_msghdr_from_user()
2215 						  kmsg->msg_namelen,  in copy_msghdr_from_user()
2216 						  kmsg->msg_name);  in copy_msghdr_from_user()
2221 		kmsg->msg_name = NULL;  in copy_msghdr_from_user()
2222 		kmsg->msg_namelen = 0;  in copy_msghdr_from_user()
2228 	kmsg->msg_iocb = NULL;  in copy_msghdr_from_user()
2232 			    UIO_FASTIOV, iov, &kmsg->msg_iter);  in copy_msghdr_from_user()