+ if (m0 == 0)
+ return;
+ if (m = sb->sb_mb)
+ while (m->m_nextpkt)
+ m = m->m_nextpkt;
+ /*
+ * Put the first mbuf on the queue.
+ * Note this permits zero length records.
+ */
+ sballoc(sb, m0);
+ if (m)
+ m->m_nextpkt = m0;
+ else
+ sb->sb_mb = m0;
+ m = m0->m_next;
+ m0->m_next = 0;
+ if (m && (m0->m_flags & M_EOR)) {
+ m0->m_flags &= ~M_EOR;
+ m->m_flags |= M_EOR;
+ }
+ sbcompress(sb, m, m0);
+}
+
+/*
+ * As above except that OOB data
+ * is inserted at the beginning of the sockbuf,
+ * but after any other OOB data.
+ */
+sbinsertoob(sb, m0)
+ register struct sockbuf *sb;
+ register struct mbuf *m0;
+{
+ register struct mbuf *m;
+ register struct mbuf **mp;
+
+ if (m0 == 0)
+ return;
+ for (mp = &sb->sb_mb; m = *mp; mp = &((*mp)->m_nextpkt)) {
+ again:
+ switch (m->m_type) {
+
+ case MT_OOBDATA:
+ continue; /* WANT next train */
+
+ case MT_CONTROL:
+ if (m = m->m_next)
+ goto again; /* inspect THIS train further */
+ }
+ break;
+ }
+ /*
+ * Put the first mbuf on the queue.
+ * Note this permits zero length records.
+ */
+ sballoc(sb, m0);
+ m0->m_nextpkt = *mp;
+ *mp = m0;
+ m = m0->m_next;
+ m0->m_next = 0;
+ if (m && (m0->m_flags & M_EOR)) {
+ m0->m_flags &= ~M_EOR;
+ m->m_flags |= M_EOR;
+ }
+ sbcompress(sb, m, m0);
+}
+
+/*
+ * Append address and data, and optionally, rights
+ * to the receive queue of a socket. If present,
+ * m0 Return 0 if
+ * no space in sockbuf or insufficient mbufs.
+ */
+sbappendaddr(sb, asa, m0, rights0)
+ register struct sockbuf *sb;
+ struct sockaddr *asa;
+ struct mbuf *m0, *rights0;
+{
+ register struct mbuf *m, *n;
+ int space = asa->sa_len;
+
+if (m0 && (m0->m_flags & M_PKTHDR) == 0)
+panic("sbappendaddr");
+ if (m0)
+ space += m0->m_pkthdr.len;
+ if (rights0)
+ space += rights0->m_len;
+ if (space > sbspace(sb))
+ return (0);
+ MGET(m, M_DONTWAIT, MT_SONAME);