--- apache_1.3.12/src/main/buff.c~	Sun Feb 27 07:16:27 2000
+++ apache_1.3.12/src/main/buff.c	Sun Feb 27 07:39:15 2000
@@ -1133,6 +1133,102 @@
 }
 #endif
 
+/* The SGI Performance patch replaces writev_it_all by ap_bwritev
+ * We don't want this, as it breaks mod_ssl ... the code is commented
+ * out for now.
+ * 
+ * static int writev_it_all(BUFF *fb, struct iovec *vec, int nvec)
+ * {
+ *   return (ap_bwritev(fb, vec, nvec) >= 0) ? 0 : -1;
+ * }
+ *
+ */
+  
+/*
+ * Write data using writev() if available, write() otherwise.
+ * Returns number of bytes written or -1 on error.
+ * Note that it may modify iov;
+ */
+API_EXPORT(int)
+ap_bwritev(BUFF *fb, struct iovec *iov, int iovcnt)
+{
+    int rval;
+
+    if ((fb->flags & (B_EOUT | B_WRERR | B_WR)) == B_WR) {
+#ifndef NO_WRITEV
+	int i, len;
+
+	rval = 0;
+
+	len = 0;
+	for (i = 0; i < iovcnt; i++)
+	    len += iov[i].iov_len;
+
+	while (len > 0) {
+	    int w;
+
+	    w = (iovcnt > 1) ? (int) writev(fb->fd, iov, iovcnt) :
+		(int) write(fb->fd, iov->iov_base, iov->iov_len);
+	    if (w >= 0) {
+		rval += w;
+		fb->bytes_sent += w;
+
+		len -= w;
+		if (len == 0)
+		    break;	/* shortcut the common case */
+
+		while (w > iov[0].iov_len) {
+		    w -= iov[0].iov_len;
+		    iov++;
+		    iovcnt--;
+		}
+		iov[0].iov_base = (char *) iov[0].iov_base + w;
+		iov[0].iov_len -= w;
+	    } else if (errno != EINTR && errno != EAGAIN) {
+  		doerror(fb, B_WR);
+		rval = -1;
+		break;
+  	    }
+
+	    if (fb->flags & B_EOUT) {	/* set asynchronously */
+		rval = -1;
+		break;
+  	    }
+	}
+#else
+	int i;
+
+	rval = 0;
+	for (i = 0; i < iovcnt; i++) {
+	    while (iov[i].iov_len > 0) {
+		int w;
+
+		w = write(fb->fd, iov[i].iov_base, iov[i].iov_len);
+		if (w >= 0) {
+		    rval += w;
+		    fb->bytes_sent += w;
+		    iov[i].iov_base = (char *) iov[i].iov_base + w;
+		    iov[i].iov_len -= w;
+		} else if (errno != EINTR && errno != EAGAIN) {
+		    doerror(fb, B_WR);
+		    rval = -1;
+		    break;
+		}
+
+		if (fb->flags & B_EOUT)	{	/* set asynchronously */
+		    rval = -1;
+		    break;
+		}
+ 	    }
+  	}
+#endif
+    } else
+	rval = -1;
+
+    return rval;
+}
+
+
 /* A wrapper for buff_write which deals with error conditions and
  * bytes_sent.  Also handles non-blocking writes.
  */