+
+hidden void __convert_scm_timestamps(struct msghdr *, socklen_t);
+
+void __convert_scm_timestamps(struct msghdr *msg, socklen_t csize)
+{
+ if (SCM_TIMESTAMP == SCM_TIMESTAMP_OLD) return;
+ if (!msg->msg_control || !msg->msg_controllen) return;
+
+ struct cmsghdr *cmsg, *last=0;
+ long tmp;
+ long long tvts[2];
+ int type = 0;
+
+ for (cmsg=CMSG_FIRSTHDR(msg); cmsg; cmsg=CMSG_NXTHDR(msg, cmsg)) {
+ if (cmsg->cmsg_level==SOL_SOCKET) switch (cmsg->cmsg_type) {
+ case SCM_TIMESTAMP_OLD:
+ if (type) break;
+ type = SCM_TIMESTAMP;
+ goto common;
+ case SCM_TIMESTAMPNS_OLD:
+ type = SCM_TIMESTAMPNS;
+ common:
+ memcpy(&tmp, CMSG_DATA(cmsg), sizeof tmp);
+ tvts[0] = tmp;
+ memcpy(&tmp, CMSG_DATA(cmsg) + sizeof tmp, sizeof tmp);
+ tvts[1] = tmp;
+ break;
+ }
+ last = cmsg;
+ }
+ if (!last || !type) return;
+ if (CMSG_SPACE(sizeof tvts) > csize-msg->msg_controllen) {
+ msg->msg_flags |= MSG_CTRUNC;
+ return;
+ }
+ msg->msg_controllen += CMSG_SPACE(sizeof tvts);
+ cmsg = CMSG_NXTHDR(msg, last);
+ cmsg->cmsg_level = SOL_SOCKET;
+ cmsg->cmsg_type = type;
+ cmsg->cmsg_len = CMSG_LEN(sizeof tvts);
+ memcpy(CMSG_DATA(cmsg), &tvts, sizeof tvts);
+}