34 int get_compat_msghdr(struct msghdr *kmsg,  in get_compat_msghdr()  argument
45 	    __get_user(kmsg->msg_namelen, &umsg->msg_namelen) ||  in get_compat_msghdr()
49 	    __get_user(kmsg->msg_controllen, &umsg->msg_controllen) ||  in get_compat_msghdr()
50 	    __get_user(kmsg->msg_flags, &umsg->msg_flags))  in get_compat_msghdr()
54 		kmsg->msg_namelen = 0;  in get_compat_msghdr()
56 	if (kmsg->msg_namelen < 0)  in get_compat_msghdr()
59 	if (kmsg->msg_namelen > sizeof(struct sockaddr_storage))  in get_compat_msghdr()
60 		kmsg->msg_namelen = sizeof(struct sockaddr_storage);  in get_compat_msghdr()
61 	kmsg->msg_control = compat_ptr(tmp3);  in get_compat_msghdr()
66 	if (uaddr && kmsg->msg_namelen) {  in get_compat_msghdr()
69 						  kmsg->msg_namelen,  in get_compat_msghdr()
70 						  kmsg->msg_name);  in get_compat_msghdr()
75 		kmsg->msg_name = NULL;  in get_compat_msghdr()
76 		kmsg->msg_namelen = 0;  in get_compat_msghdr()
82 	kmsg->msg_iocb = NULL;  in get_compat_msghdr()
86 				   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
135 	ucmsg = CMSG_COMPAT_FIRSTHDR(kmsg);  in cmsghdr_from_user_compat_to_kern()
141 		if (!CMSG_COMPAT_OK(ucmlen, ucmsg, kmsg))  in cmsghdr_from_user_compat_to_kern()
148 		ucmsg = cmsg_compat_nxthdr(kmsg, ucmsg, ucmlen);  in cmsghdr_from_user_compat_to_kern()
165 	ucmsg = CMSG_COMPAT_FIRSTHDR(kmsg);  in cmsghdr_from_user_compat_to_kern()
169 		if (!CMSG_COMPAT_OK(ucmlen, ucmsg, kmsg))  in cmsghdr_from_user_compat_to_kern()
186 		ucmsg = cmsg_compat_nxthdr(kmsg, ucmsg, ucmlen);  in cmsghdr_from_user_compat_to_kern()
190 	kmsg->msg_control = kcmsg_base;  in cmsghdr_from_user_compat_to_kern()
191 	kmsg->msg_controllen = kcmlen;  in cmsghdr_from_user_compat_to_kern()
202 int put_cmsg_compat(struct msghdr *kmsg, int level, int type, int len, void *data)  in put_cmsg_compat()  argument
204 	struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control;  in put_cmsg_compat()
210 	if (cm == NULL || kmsg->msg_controllen < sizeof(*cm)) {  in put_cmsg_compat()
211 		kmsg->msg_flags |= MSG_CTRUNC;  in put_cmsg_compat()
238 	if (kmsg->msg_controllen < cmlen) {  in put_cmsg_compat()
239 		kmsg->msg_flags |= MSG_CTRUNC;  in put_cmsg_compat()
240 		cmlen = kmsg->msg_controllen;  in put_cmsg_compat()
251 	if (kmsg->msg_controllen < cmlen)  in put_cmsg_compat()
252 		cmlen = kmsg->msg_controllen;  in put_cmsg_compat()
253 	kmsg->msg_control += cmlen;  in put_cmsg_compat()
254 	kmsg->msg_controllen -= cmlen;  in put_cmsg_compat()
258 void scm_detach_fds_compat(struct msghdr *kmsg, struct scm_cookie *scm)  in scm_detach_fds_compat()  argument
260 	struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control;  in scm_detach_fds_compat()
261 	int fdmax = (kmsg->msg_controllen - sizeof(struct compat_cmsghdr)) / sizeof(int);  in scm_detach_fds_compat()
275 		err = get_unused_fd_flags(MSG_CMSG_CLOEXEC & kmsg->msg_flags  in scm_detach_fds_compat()
298 			kmsg->msg_control += cmlen;  in scm_detach_fds_compat()
299 			kmsg->msg_controllen -= cmlen;  in scm_detach_fds_compat()
303 		kmsg->msg_flags |= MSG_CTRUNC;  in scm_detach_fds_compat()