36 int get_compat_msghdr(struct msghdr *kmsg,  in get_compat_msghdr()  argument
47 	kmsg->msg_flags = msg.msg_flags;  in get_compat_msghdr()
48 	kmsg->msg_namelen = msg.msg_namelen;  in get_compat_msghdr()
51 		kmsg->msg_namelen = 0;  in get_compat_msghdr()
53 	if (kmsg->msg_namelen < 0)  in get_compat_msghdr()
56 	if (kmsg->msg_namelen > sizeof(struct sockaddr_storage))  in get_compat_msghdr()
57 		kmsg->msg_namelen = sizeof(struct sockaddr_storage);  in get_compat_msghdr()
59 	kmsg->msg_control = compat_ptr(msg.msg_control);  in get_compat_msghdr()
60 	kmsg->msg_controllen = msg.msg_controllen;  in get_compat_msghdr()
65 	if (msg.msg_name && kmsg->msg_namelen) {  in get_compat_msghdr()
68 						  kmsg->msg_namelen,  in get_compat_msghdr()
69 						  kmsg->msg_name);  in get_compat_msghdr()
74 		kmsg->msg_name = NULL;  in get_compat_msghdr()
75 		kmsg->msg_namelen = 0;  in get_compat_msghdr()
81 	kmsg->msg_iocb = NULL;  in get_compat_msghdr()
85 				   UIO_FASTIOV, iov, &kmsg->msg_iter);  in get_compat_msghdr()
124 int cmsghdr_from_user_compat_to_kern(struct msghdr *kmsg, struct sock *sk,  in cmsghdr_from_user_compat_to_kern()  argument
138 	ucmsg = CMSG_COMPAT_FIRSTHDR(kmsg);  in cmsghdr_from_user_compat_to_kern()
144 		if (!CMSG_COMPAT_OK(ucmlen, ucmsg, kmsg))  in cmsghdr_from_user_compat_to_kern()
150 		ucmsg = cmsg_compat_nxthdr(kmsg, ucmsg, ucmlen);  in cmsghdr_from_user_compat_to_kern()
167 	ucmsg = CMSG_COMPAT_FIRSTHDR(kmsg);  in cmsghdr_from_user_compat_to_kern()
171 		if (!CMSG_COMPAT_OK(ucmlen, ucmsg, kmsg))  in cmsghdr_from_user_compat_to_kern()
187 		ucmsg = cmsg_compat_nxthdr(kmsg, ucmsg, ucmlen);  in cmsghdr_from_user_compat_to_kern()
198 	kmsg->msg_control = kcmsg_base;  in cmsghdr_from_user_compat_to_kern()
199 	kmsg->msg_controllen = kcmlen;  in cmsghdr_from_user_compat_to_kern()
210 int put_cmsg_compat(struct msghdr *kmsg, int level, int type, int len, void *data)  in put_cmsg_compat()  argument
212 	struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control;  in put_cmsg_compat()
218 	if (cm == NULL || kmsg->msg_controllen < sizeof(*cm)) {  in put_cmsg_compat()
219 		kmsg->msg_flags |= MSG_CTRUNC;  in put_cmsg_compat()
246 	if (kmsg->msg_controllen < cmlen) {  in put_cmsg_compat()
247 		kmsg->msg_flags |= MSG_CTRUNC;  in put_cmsg_compat()
248 		cmlen = kmsg->msg_controllen;  in put_cmsg_compat()
259 	if (kmsg->msg_controllen < cmlen)  in put_cmsg_compat()
260 		cmlen = kmsg->msg_controllen;  in put_cmsg_compat()
261 	kmsg->msg_control += cmlen;  in put_cmsg_compat()
262 	kmsg->msg_controllen -= cmlen;  in put_cmsg_compat()
266 void scm_detach_fds_compat(struct msghdr *kmsg, struct scm_cookie *scm)  in scm_detach_fds_compat()  argument
268 	struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control;  in scm_detach_fds_compat()
269 	int fdmax = (kmsg->msg_controllen - sizeof(struct compat_cmsghdr)) / sizeof(int);  in scm_detach_fds_compat()
283 		err = get_unused_fd_flags(MSG_CMSG_CLOEXEC & kmsg->msg_flags  in scm_detach_fds_compat()
307 			kmsg->msg_control += cmlen;  in scm_detach_fds_compat()
308 			kmsg->msg_controllen -= cmlen;  in scm_detach_fds_compat()
312 		kmsg->msg_flags |= MSG_CTRUNC;  in scm_detach_fds_compat()