r15030: On a performace hunt... Remove as many extraneous

memset's as possible.
Jeremy.
(This used to be commit 1217ed392b75aa8bfefa9c3f1ec5fa3bba841ee0)

6 files changed, 29 insertions, 33 deletions

diff --git a/source3/lib/util.c b/source3/lib/util.c
index 87f15b8759d..bbc9ceddcaf 100644
--- a/source3/lib/util.c
+++ b/source3/lib/util.c
@@ -529,8 +529,9 @@ void smb_setlen(char *buf,int len)
 
 int set_message(char *buf,int num_words,int num_bytes,BOOL zero)
 {
-	if (zero)
+	if (zero && (num_words || num_bytes)) {
 		memset(buf + smb_size,'\0',num_words*2 + num_bytes);
+	}
 	SCVAL(buf,smb_wct,num_words);
 	SSVAL(buf,smb_vwv + num_words*SIZEOFWORD,num_bytes);  
 	smb_setlen(buf,smb_size + num_words*2 + num_bytes - 4);
diff --git a/source3/lib/util_sock.c b/source3/lib/util_sock.c
index 91c3305996e..12fc2ead95c 100644
--- a/source3/lib/util_sock.c
+++ b/source3/lib/util_sock.c
@@ -662,8 +662,6 @@ BOOL receive_smb_raw(int fd, char *buffer, unsigned int timeout)
 
 	smb_read_error = 0;
 
-	memset(buffer,'\0',smb_size + 100);
-
 	len = read_smb_length_return_keepalive(fd,buffer,timeout);
 	if (len < 0) {
 		DEBUG(10,("receive_smb_raw: length < 0!\n"));
@@ -708,8 +706,9 @@ BOOL receive_smb_raw(int fd, char *buffer, unsigned int timeout)
 		}
 
 		if (ret != len) {
-			if (smb_read_error == 0)
+			if (smb_read_error == 0) {
 				smb_read_error = READ_ERROR;
+			}
 			return False;
 		}
 		
diff --git a/source3/smbd/nttrans.c b/source3/smbd/nttrans.c
index 24d64ecfc76..839eb7bb279 100644
--- a/source3/smbd/nttrans.c
+++ b/source3/smbd/nttrans.c
@@ -1805,7 +1805,7 @@ int reply_ntrename(connection_struct *conn,
 	 * update after a rename..
 	 */	
 	process_pending_change_notify_queue((time_t)0);
-	outsize = set_message(outbuf,0,0,True);
+	outsize = set_message(outbuf,0,0,False);
   
 	END_PROFILE(SMBntrename);
 	return(outsize);
@@ -2956,7 +2956,7 @@ int reply_nttrans(connection_struct *conn,
 
 	/* We need to send an interim response then receive the rest
 	   of the parameter/data bytes */
-	outsize = set_message(outbuf,0,0,True);
+	outsize = set_message(outbuf,0,0,False);
 	show_msg(outbuf);
 	END_PROFILE(SMBnttrans);
 	return outsize;
diff --git a/source3/smbd/process.c b/source3/smbd/process.c
index b2634e26531..c0a43e99dd3 100644
--- a/source3/smbd/process.c
+++ b/source3/smbd/process.c
@@ -1160,20 +1160,16 @@ void remove_from_common_flags2(uint32 v)
 
 void construct_reply_common(char *inbuf,char *outbuf)
 {
-	memset(outbuf,'\0',smb_size);
-
-	set_message(outbuf,0,0,True);
-	SCVAL(outbuf,smb_com,CVAL(inbuf,smb_com));
+	set_message(outbuf,0,0,False);
 	
-	memcpy(outbuf+4,inbuf+4,4);
-	SCVAL(outbuf,smb_rcls,SMB_SUCCESS);
-	SCVAL(outbuf,smb_reh,0);
+	SCVAL(outbuf,smb_com,CVAL(inbuf,smb_com));
+	SIVAL(outbuf,smb_rcls,0);
 	SCVAL(outbuf,smb_flg, FLAG_REPLY | (CVAL(inbuf,smb_flg) & FLAG_CASELESS_PATHNAMES)); 
 	SSVAL(outbuf,smb_flg2,
 		(SVAL(inbuf,smb_flg2) & FLAGS2_UNICODE_STRINGS) |
 		common_flags2);
+	memset(outbuf+smb_pidhigh,'\0',(smb_tid-smb_pidhigh));
 
-	SSVAL(outbuf,smb_err,SMB_SUCCESS);
 	SSVAL(outbuf,smb_tid,SVAL(inbuf,smb_tid));
 	SSVAL(outbuf,smb_pid,SVAL(inbuf,smb_pid));
 	SSVAL(outbuf,smb_uid,SVAL(inbuf,smb_uid));
diff --git a/source3/smbd/reply.c b/source3/smbd/reply.c
index 3bad4829b96..0a3fc27be63 100644
--- a/source3/smbd/reply.c
+++ b/source3/smbd/reply.c
@@ -848,7 +848,7 @@ int reply_chkpth(connection_struct *conn, char *inbuf,char *outbuf, int dum_size
 		return(UNIXERROR(ERRDOS,ERRbadpath));
 	}
 
-	outsize = set_message(outbuf,0,0,True);
+	outsize = set_message(outbuf,0,0,False);
 	DEBUG(3,("chkpth %s mode=%d\n", name, (int)SVAL(inbuf,smb_vwv0)));
 
 	END_PROFILE(SMBchkpth);
@@ -994,7 +994,7 @@ int reply_setatr(connection_struct *conn, char *inbuf,char *outbuf, int dum_size
 		return set_bad_path_error(errno, bad_path, outbuf, ERRDOS, ERRnoaccess);
 	}
  
-	outsize = set_message(outbuf,0,0,True);
+	outsize = set_message(outbuf,0,0,False);
   
 	DEBUG( 3, ( "setatr name=%s mode=%d\n", fname, mode ) );
   
@@ -2113,7 +2113,7 @@ int reply_unlink(connection_struct *conn, char *inbuf,char *outbuf, int dum_size
 	 */
 	process_pending_change_notify_queue((time_t)0);
 	
-	outsize = set_message(outbuf,0,0,True);
+	outsize = set_message(outbuf,0,0,False);
   
 	END_PROFILE(SMBunlink);
 	return outsize;
@@ -3214,7 +3214,7 @@ int reply_lseek(connection_struct *conn, char *inbuf,char *outbuf, int size, int
 
 int reply_flush(connection_struct *conn, char *inbuf,char *outbuf, int size, int dum_buffsize)
 {
-	int outsize = set_message(outbuf,0,0,True);
+	int outsize = set_message(outbuf,0,0,False);
 	uint16 fnum = SVAL(inbuf,smb_vwv0);
 	files_struct *fsp = file_fsp(inbuf,smb_vwv0);
 	START_PROFILE(SMBflush);
@@ -3245,7 +3245,7 @@ int reply_exit(connection_struct *conn,
 
 	file_close_pid(SVAL(inbuf,smb_pid),SVAL(inbuf,smb_uid));
 
-	outsize = set_message(outbuf,0,0,True);
+	outsize = set_message(outbuf,0,0,False);
 
 	DEBUG(3,("exit\n"));
 
@@ -3266,7 +3266,7 @@ int reply_close(connection_struct *conn, char *inbuf,char *outbuf, int size,
 	files_struct *fsp = NULL;
 	START_PROFILE(SMBclose);
 
-	outsize = set_message(outbuf,0,0,True);
+	outsize = set_message(outbuf,0,0,False);
 
 	/* If it's an IPC, pass off to the pipe handler. */
 	if (IS_IPC(conn)) {
@@ -3414,7 +3414,7 @@ int reply_writeclose(connection_struct *conn,
 int reply_lock(connection_struct *conn,
 	       char *inbuf,char *outbuf, int length, int dum_buffsize)
 {
-	int outsize = set_message(outbuf,0,0,True);
+	int outsize = set_message(outbuf,0,0,False);
 	SMB_BIG_UINT count,offset;
 	NTSTATUS status;
 	files_struct *fsp = file_fsp(inbuf,smb_vwv0);
@@ -3476,7 +3476,7 @@ int reply_lock(connection_struct *conn,
 int reply_unlock(connection_struct *conn, char *inbuf,char *outbuf, int size, 
 		 int dum_buffsize)
 {
-	int outsize = set_message(outbuf,0,0,True);
+	int outsize = set_message(outbuf,0,0,False);
 	SMB_BIG_UINT count,offset;
 	NTSTATUS status;
 	files_struct *fsp = file_fsp(inbuf,smb_vwv0);
@@ -3515,7 +3515,7 @@ int reply_unlock(connection_struct *conn, char *inbuf,char *outbuf, int size,
 int reply_tdis(connection_struct *conn, 
 	       char *inbuf,char *outbuf, int dum_size, int dum_buffsize)
 {
-	int outsize = set_message(outbuf,0,0,True);
+	int outsize = set_message(outbuf,0,0,False);
 	uint16 vuid;
 	START_PROFILE(SMBtdis);
 
@@ -3622,7 +3622,7 @@ int reply_printopen(connection_struct *conn,
 int reply_printclose(connection_struct *conn,
 		     char *inbuf,char *outbuf, int dum_size, int dum_buffsize)
 {
-	int outsize = set_message(outbuf,0,0,True);
+	int outsize = set_message(outbuf,0,0,False);
 	files_struct *fsp = file_fsp(inbuf,smb_vwv0);
 	int close_err = 0;
 	START_PROFILE(SMBsplclose);
@@ -3727,7 +3727,7 @@ int reply_printqueue(connection_struct *conn,
 int reply_printwrite(connection_struct *conn, char *inbuf,char *outbuf, int dum_size, int dum_buffsize)
 {
 	int numtowrite;
-	int outsize = set_message(outbuf,0,0,True);
+	int outsize = set_message(outbuf,0,0,False);
 	char *data;
 	files_struct *fsp = file_fsp(inbuf,smb_vwv0);
 
@@ -3852,7 +3852,7 @@ int reply_mkdir(connection_struct *conn, char *inbuf,char *outbuf, int dum_size,
 		change_owner_to_parent(conn, NULL, directory, &sbuf);
 	}
 
-	outsize = set_message(outbuf,0,0,True);
+	outsize = set_message(outbuf,0,0,False);
 
 	DEBUG( 3, ( "mkdir %s ret=%d\n", directory, outsize ) );
 
@@ -4040,7 +4040,7 @@ int reply_rmdir(connection_struct *conn, char *inbuf,char *outbuf, int dum_size,
 		return set_bad_path_error(errno, bad_path, outbuf, ERRDOS, ERRbadpath);
 	}
  
-	outsize = set_message(outbuf,0,0,True);
+	outsize = set_message(outbuf,0,0,False);
   
 	DEBUG( 3, ( "rmdir %s\n", directory ) );
   
@@ -4712,7 +4712,7 @@ int reply_mv(connection_struct *conn, char *inbuf,char *outbuf, int dum_size,
 	 * update after a rename..
 	 */	
 	process_pending_change_notify_queue((time_t)0);
-	outsize = set_message(outbuf,0,0,True);
+	outsize = set_message(outbuf,0,0,False);
   
 	END_PROFILE(SMBmv);
 	return(outsize);
@@ -5043,7 +5043,7 @@ int reply_setdir(connection_struct *conn, char *inbuf,char *outbuf, int dum_size
 		return ERROR_DOS(ERRDOS,ERRbadpath);
 	}
   
-	outsize = set_message(outbuf,0,0,True);
+	outsize = set_message(outbuf,0,0,False);
 	SCVAL(outbuf,smb_reh,CVAL(inbuf,smb_reh));
   
 	DEBUG(3,("setdir %s\n", newdir));
@@ -5542,7 +5542,7 @@ int reply_setattrE(connection_struct *conn, char *inbuf,char *outbuf, int size,
 	files_struct *fsp = file_fsp(inbuf,smb_vwv0);
 	START_PROFILE(SMBsetattrE);
 
-	outsize = set_message(outbuf,0,0,True);
+	outsize = set_message(outbuf,0,0,False);
 
 	if(!fsp || (fsp->conn != conn)) {
 		END_PROFILE(SMBsetattrE);
diff --git a/source3/smbd/trans2.c b/source3/smbd/trans2.c
index 19463403aca..31e3d9e3297 100644
--- a/source3/smbd/trans2.c
+++ b/source3/smbd/trans2.c
@@ -4960,7 +4960,7 @@ int reply_findclose(connection_struct *conn,
 
 	dptr_close(&dptr_num);
 
-	outsize = set_message(outbuf,0,0,True);
+	outsize = set_message(outbuf,0,0,False);
 
 	DEBUG(3,("SMBfindclose dptr_num = %d\n", dptr_num));
 
@@ -4987,7 +4987,7 @@ int reply_findnclose(connection_struct *conn,
 	   findnotifyfirst - so any dptr_num is ok here. 
 	   Just ignore it. */
 
-	outsize = set_message(outbuf,0,0,True);
+	outsize = set_message(outbuf,0,0,False);
 
 	DEBUG(3,("SMB_findnclose dptr_num = %d\n", dptr_num));
 
@@ -5274,7 +5274,7 @@ int reply_trans2(connection_struct *conn, char *inbuf,char *outbuf,
 
 	/* We need to send an interim response then receive the rest
 	   of the parameter/data bytes */
-	outsize = set_message(outbuf,0,0,True);
+	outsize = set_message(outbuf,0,0,False);
 	show_msg(outbuf);
 	END_PROFILE(SMBtrans2);
 	return outsize;