diff -u -u -r1.195 includes.h 
--- source/include/includes.h 2000/12/06 00:05:14 1.195 
+++ source/include/includes.h 2001/01/26 05:38:51 
@@ -871,7 +871,8 @@ 
  
 /* default socket options. Dave Miller thinks we should default to TCP_NODELAY 
    given the socket IO pattern that Samba uses */ 
-#ifdef TCP_NODELAY 
+ 
+#if 0 
 #define DEFAULT_SOCKET_OPTIONS "TCP_NODELAY" 
 #else 
 #define DEFAULT_SOCKET_OPTIONS "" 
diff -u -u -r1.257 reply.c 
--- source/smbd/reply.c 2001/01/24 19:34:53 1.257 
+++ source/smbd/reply.c 2001/01/26 05:38:53 
@@ -2383,6 +2391,51 @@ 
     END_PROFILE(SMBreadX); 
     return(ERROR(ERRDOS,ERRlock)); 
   } 
+ 
+#if 1 
+ /* We can use sendfile if it is not chained */ 
+ if (CVAL(inbuf,smb_vwv0) == 0xFF) { 
+ off_t tmpoffset; 
+ struct stat buf; 
+ int flags = 0; 
+ 
+ nread = smb_maxcnt; 
+ 
+ fstat(fsp->fd, &buf); 
+ if (startpos > buf.st_size) 
+ return(UNIXERROR(ERRDOS,ERRnoaccess)); 
+ if (nread > (buf.st_size - startpos)) 
+ nread = (buf.st_size - startpos); 
+ 
+ SSVAL(outbuf,smb_vwv5,nread); 
+ SSVAL(outbuf,smb_vwv6,smb_offset(data,outbuf)); 
+ SSVAL(smb_buf(outbuf),-2,nread); 
+ CVAL(outbuf,smb_vwv0) = 0xFF; 
+ set_message(outbuf,12,nread,False); 
+ 
+#define MSG_MORE 0x8000 
+ if (nread > 0) 
+ flags = MSG_MORE; 
+ if (send(smbd_server_fd(), outbuf, data - outbuf, flags) == -1) 
+ DEBUG(0,("reply_read_and_X: send ERROR!\n")); 
+ 
+ tmpoffset = startpos; 
+ while(nread) { 
+ int nwritten; 
+ nwritten = sendfile(smbd_server_fd(), fsp->fd, &tmpoffset, nread); 
+ if (nwritten == -1) 
+ DEBUG(0,("reply_read_and_X: sendfile ERROR!\n")); 
+ 
+ if (!nwritten) 
+ break; 
+ 
+ nread -= nwritten; 
+ } 
+ 
+ return -1; 
+ } 
+#endif 
+ 
   nread = read_file(fsp,data,startpos,smb_maxcnt); 
    
   if (nread < 0) { 
-