36 int __get_compat_msghdr(struct msghdr *kmsg,  in __get_compat_msghdr()  argument
42 	kmsg->msg_flags = msg->msg_flags;  in __get_compat_msghdr()
43 	kmsg->msg_namelen = msg->msg_namelen;  in __get_compat_msghdr()
46 		kmsg->msg_namelen = 0;  in __get_compat_msghdr()
48 	if (kmsg->msg_namelen < 0)  in __get_compat_msghdr()
51 	if (kmsg->msg_namelen > sizeof(struct sockaddr_storage))  in __get_compat_msghdr()
52 		kmsg->msg_namelen = sizeof(struct sockaddr_storage);  in __get_compat_msghdr()
54 	kmsg->msg_control_is_user = true;  in __get_compat_msghdr()
55 	kmsg->msg_get_inq = 0;  in __get_compat_msghdr()
56 	kmsg->msg_control_user = compat_ptr(msg->msg_control);  in __get_compat_msghdr()
57 	kmsg->msg_controllen = msg->msg_controllen;  in __get_compat_msghdr()
62 	if (msg->msg_name && kmsg->msg_namelen) {  in __get_compat_msghdr()
65 						  kmsg->msg_namelen,  in __get_compat_msghdr()
66 						  kmsg->msg_name);  in __get_compat_msghdr()
71 		kmsg->msg_name = NULL;  in __get_compat_msghdr()
72 		kmsg->msg_namelen = 0;  in __get_compat_msghdr()
78 	kmsg->msg_iocb = NULL;  in __get_compat_msghdr()
79 	kmsg->msg_ubuf = NULL;  in __get_compat_msghdr()
83 int get_compat_msghdr(struct msghdr *kmsg,  in get_compat_msghdr()  argument
94 	err = __get_compat_msghdr(kmsg, &msg, save_addr);  in get_compat_msghdr()
100 			   UIO_FASTIOV, iov, &kmsg->msg_iter);  in get_compat_msghdr()
139 int cmsghdr_from_user_compat_to_kern(struct msghdr *kmsg, struct sock *sk,  in cmsghdr_from_user_compat_to_kern()  argument
153 	ucmsg = CMSG_COMPAT_FIRSTHDR(kmsg);  in cmsghdr_from_user_compat_to_kern()
159 		if (!CMSG_COMPAT_OK(ucmlen, ucmsg, kmsg))  in cmsghdr_from_user_compat_to_kern()
165 		ucmsg = cmsg_compat_nxthdr(kmsg, ucmsg, ucmlen);  in cmsghdr_from_user_compat_to_kern()
171 	 * It may not be modified as we do not stick it into the kmsg  in cmsghdr_from_user_compat_to_kern()
182 	ucmsg = CMSG_COMPAT_FIRSTHDR(kmsg);  in cmsghdr_from_user_compat_to_kern()
187 		if (!CMSG_COMPAT_OK(cmsg.cmsg_len, ucmsg, kmsg))  in cmsghdr_from_user_compat_to_kern()
203 		ucmsg = cmsg_compat_nxthdr(kmsg, ucmsg, cmsg.cmsg_len);  in cmsghdr_from_user_compat_to_kern()
214 	kmsg->msg_control_is_user = false;  in cmsghdr_from_user_compat_to_kern()
215 	kmsg->msg_control = kcmsg_base;  in cmsghdr_from_user_compat_to_kern()
216 	kmsg->msg_controllen = kcmlen;  in cmsghdr_from_user_compat_to_kern()
227 int put_cmsg_compat(struct msghdr *kmsg, int level, int type, int len, void *data)  in put_cmsg_compat()  argument
229 	struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control_user;  in put_cmsg_compat()
235 	if (cm == NULL || kmsg->msg_controllen < sizeof(*cm)) {  in put_cmsg_compat()
236 		kmsg->msg_flags |= MSG_CTRUNC;  in put_cmsg_compat()
263 	if (kmsg->msg_controllen < cmlen) {  in put_cmsg_compat()
264 		kmsg->msg_flags |= MSG_CTRUNC;  in put_cmsg_compat()
265 		cmlen = kmsg->msg_controllen;  in put_cmsg_compat()
276 	if (kmsg->msg_controllen < cmlen)  in put_cmsg_compat()
277 		cmlen = kmsg->msg_controllen;  in put_cmsg_compat()
278 	kmsg->msg_control_user += cmlen;  in put_cmsg_compat()
279 	kmsg->msg_controllen -= cmlen;  in put_cmsg_compat()