2231 int __copy_msghdr_from_user(struct msghdr *kmsg,  in __copy_msghdr_from_user()  argument
2242 	kmsg->msg_control_is_user = true;  in __copy_msghdr_from_user()
2243 	kmsg->msg_control_user = msg.msg_control;  in __copy_msghdr_from_user()
2244 	kmsg->msg_controllen = msg.msg_controllen;  in __copy_msghdr_from_user()
2245 	kmsg->msg_flags = msg.msg_flags;  in __copy_msghdr_from_user()
2247 	kmsg->msg_namelen = msg.msg_namelen;  in __copy_msghdr_from_user()
2249 		kmsg->msg_namelen = 0;  in __copy_msghdr_from_user()
2251 	if (kmsg->msg_namelen < 0)  in __copy_msghdr_from_user()
2254 	if (kmsg->msg_namelen > sizeof(struct sockaddr_storage))  in __copy_msghdr_from_user()
2255 		kmsg->msg_namelen = sizeof(struct sockaddr_storage);  in __copy_msghdr_from_user()
2260 	if (msg.msg_name && kmsg->msg_namelen) {  in __copy_msghdr_from_user()
2263 						  kmsg->msg_namelen,  in __copy_msghdr_from_user()
2264 						  kmsg->msg_name);  in __copy_msghdr_from_user()
2269 		kmsg->msg_name = NULL;  in __copy_msghdr_from_user()
2270 		kmsg->msg_namelen = 0;  in __copy_msghdr_from_user()
2276 	kmsg->msg_iocb = NULL;  in __copy_msghdr_from_user()
2282 static int copy_msghdr_from_user(struct msghdr *kmsg,  in copy_msghdr_from_user()  argument
2290 	err = __copy_msghdr_from_user(kmsg, umsg, save_addr, &msg.msg_iov,  in copy_msghdr_from_user()
2297 			    UIO_FASTIOV, iov, &kmsg->msg_iter);  in copy_msghdr_from_user()