From 464dc5433641566abeeabd07f46ab569c986a3b0 Mon Sep 17 00:00:00 2001
From: Andrew Tridgell <tridge@samba.org>
Date: Mon, 27 Oct 1997 13:38:07 +0000
Subject: also disable read prediction in 1.9.18 (This used to be commit
 0f15558efb26b7215540a588dfe8733e9346d407)

---
 source3/include/local.h | 5 +++++
 source3/smbd/predict.c  | 6 +++++-
 source3/smbd/reply.c    | 2 ++
 source3/smbd/server.c   | 9 ++++++++-
 4 files changed, 20 insertions(+), 2 deletions(-)

(limited to 'source3')

diff --git a/source3/include/local.h b/source3/include/local.h
index a218dd8fc6..c1f1de2132 100644
--- a/source3/include/local.h
+++ b/source3/include/local.h
@@ -160,4 +160,9 @@
 
 #define OPLOCK_BREAK_TIMEOUT 30
 
+
+/* the read preciction code has been disabled until some problems with
+   it are worked out */
+#define USE_READ_PREDICTION 0
+
 #endif
diff --git a/source3/smbd/predict.c b/source3/smbd/predict.c
index 7d6b2498f5..f5f0a2102e 100644
--- a/source3/smbd/predict.c
+++ b/source3/smbd/predict.c
@@ -23,6 +23,7 @@
 
 extern int DEBUGLEVEL;
 
+#if USE_READ_PREDICTION
 
 /* variables used by the read prediction module */
 static int rp_fd = -1;
@@ -36,7 +37,7 @@ static int rp_timeout = 5;
 static time_t rp_time = 0;
 static char *rp_buffer = NULL;
 static BOOL predict_skip=False;
-time_t smb_last_time=(time_t)0;
+extern time_t smb_last_time;
 
 /****************************************************************************
 handle read prediction on a file
@@ -156,3 +157,6 @@ void invalidate_read_prediction(int fd)
    rp_predict_fd = -1;
 }
 
+#else
+ void read_prediction_dummy(void) ;
+#endif
diff --git a/source3/smbd/reply.c b/source3/smbd/reply.c
index f437ea564d..9e261a1bd5 100644
--- a/source3/smbd/reply.c
+++ b/source3/smbd/reply.c
@@ -1722,8 +1722,10 @@ int reply_readbraw(char *inbuf, char *outbuf)
     int predict=0;
     _smb_setlen(header,nread);
 
+#if USE_READ_PREDICTION
     if (!Files[fnum].can_write)
       predict = read_predict(fd,startpos,header+4,NULL,nread);
+#endif
 
     if ((nread-predict) > 0)
       seek_file(fnum,startpos + predict);
diff --git a/source3/smbd/server.c b/source3/smbd/server.c
index 9b428df44c..88f7497ee5 100644
--- a/source3/smbd/server.c
+++ b/source3/smbd/server.c
@@ -48,7 +48,7 @@ extern BOOL case_preserve;
 extern BOOL use_mangled_map;
 extern BOOL short_case_preserve;
 extern BOOL case_mangle;
-extern time_t smb_last_time;
+time_t smb_last_time=(time_t)0;
 
 extern int smb_read_error;
 
@@ -1434,7 +1434,10 @@ void close_file(int fnum, BOOL normal_close)
   uint32 inode = fs_p->fd_ptr->inode;
   int token;
 
+#if USE_READ_PREDICTION
   invalidate_read_prediction(fs_p->fd_ptr->fd);
+#endif
+
   fs_p->open = False;
   Connections[cnum].num_files_open--;
   if(fs_p->wbmpx_ptr) 
@@ -1972,6 +1975,7 @@ int read_file(int fnum,char *data,uint32 pos,int n)
 {
   int ret=0,readret;
 
+#if USE_READ_PREDICTION
   if (!Files[fnum].can_write)
     {
       ret = read_predict(Files[fnum].fd_ptr->fd,pos,data,NULL,n);
@@ -1980,6 +1984,7 @@ int read_file(int fnum,char *data,uint32 pos,int n)
       n -= ret;
       pos += ret;
     }
+#endif
 
 #if USE_MMAP
   if (Files[fnum].mmap_ptr)
@@ -4782,8 +4787,10 @@ static void process(void)
     if (deadtime <= 0)
       deadtime = DEFAULT_SMBD_TIMEOUT;
 
+#if USE_READ_PREDICTION
     if (lp_readprediction())
       do_read_prediction();
+#endif
 
     errno = 0;      
 
-- 
cgit