diff --git a/DBConfig b/DBConfig
new file mode 100644
index 0000000..6183742
--- /dev/null
+++ b/DBConfig
@@ -0,0 +1 @@
+leaf/leaf_cache_pq2@192.168.83.108
diff --git a/client.py b/client.py
index 7582b7d..8323d27 100644
--- a/client.py
+++ b/client.py
@@ -13,6 +13,8 @@ from concurrent.futures import ThreadPoolExecutor
 import tornado.iostream
 from tornado.escape import utf8
 from tornado.log import gen_log
+from ctypes import *
+import os
 #import time,datat
 
 readchunky = False
@@ -190,7 +192,12 @@ def writer(host,filepath,targetdir,uid,gid,pos,size):
    print("total bytes downloaded was", total_downloaded)
    if total_downloaded==FILESIZE:
        tornado.ioloop.IOLoop.instance().stop()
-  
+   lib=cdll.LoadLibrary('./libpycall.so')
+   print("start")
+   func=lib.update_bitmap
+   func.argtypes=(c_int,c_int,c_char_p)
+   func=lib.update_bitmap(int(pos),int(size),filepath.encode("utf-8"))
+   print("finish")
 
 @gen.coroutine
 def upload(host,filepath,targetpath,pos,size):
diff --git a/libpycall.so b/libpycall.so
new file mode 100755
index 0000000..07f245e
Binary files /dev/null and b/libpycall.so differ
diff --git a/pycall.c b/pycall.c
new file mode 100644
index 0000000..3af7915
--- /dev/null
+++ b/pycall.c
@@ -0,0 +1,112 @@
+#include<stdio.h>
+#include<stdlib.h>
+#include<string.h>
+#include</usr/include/mysql/mysql.h>
+
+int splitname(char *path, char *basename){
+        char *p;
+        if (*path == 0 || *path != '/')  {
+                return (-1);
+        }
+        /* silently remove trailing slashes */
+        p = path + strlen (path) - 1;
+        while (*p == '/' && p != path)
+                *p = '\0';
+        if ((p = strrchr (path, '/')) == NULL)
+                p = path - 1;
+        strcpy (basename, (*(p + 1)) ? p + 1 : "/");
+        if (p <= path)  /* path in the form abc or /abc */
+                p++;
+        *p = '\0';
+        return (0);
+}
+
+int update_bitmap(int ini_bit, int size, char *filename)
+{
+	int pro_bit=ini_bit/10;	
+	int size_bit=size/10;
+	int i;
+	printf("Data block start at %dMB, size is %dMB (Block unit is 10MB)\n",ini_bit,size);
+	if(size%10!=0){
+		size_bit++;
+	}	
+	char *bitmap=(char *)malloc(pro_bit+size_bit+1);
+	if(bitmap==NULL){
+		exit(1);
+	}
+	memset(bitmap,'0',sizeof(char)*(pro_bit+size_bit));
+	for(i=pro_bit;i<pro_bit+size_bit;i++){
+		bitmap[i]='1';
+	}
+	printf("bitmap: %s\n",bitmap);
+	int pathlen=strlen(filename);
+	char *name=(char *)malloc(pathlen+1);
+	splitname(filename,name);
+	FILE *cf=fopen("DBConfig","r");
+	char *p_u, *p_p, *p_s;
+	if(cf==NULL){
+		printf("No DBConfig file\n");
+		exit(0);
+	}
+	fseek(cf,0,SEEK_END);
+        int len=ftell(cf);
+	fseek(cf,0,SEEK_SET);
+	char *buf=(char *)malloc(len*sizeof(char)+1);
+        fgets(buf,len+1,cf);
+	if(strlen(buf)>=5&&(p_u=strtok(buf,"/\n"))&&(p_p=strtok(NULL,"@\n"))&&(p_s=strtok(NULL,"\n"))){
+      		printf("%s  %s  %s\n",p_s, p_u, p_p);
+		fclose(cf);
+		MYSQL *t_mysql;
+		MYSQL_ROW row; 
+		MYSQL_RES *result;
+		unsigned long *length;
+		char *check="select bitmap from Cns_file_transform_metadata where path='%s' and name='%s'";
+	       	char *bitmap_update="update Cns_file_transform_metadata set bitmap='%s' where path='%s' and name='%s'";
+     		char sql_check[1024];
+		char sql_update[1024];
+		sprintf(sql_check,check,filename,name);
+		printf("sql_check is %s\n",sql_check);
+		t_mysql=mysql_init(NULL);
+        	if(t_mysql==NULL){
+                	printf("mysql connection inition failed\n");
+                	exit(1);
+        	}
+      		if(NULL==mysql_real_connect(t_mysql,p_s,p_u,p_p,"cns_db",0,NULL,0)){
+               		printf("mysql connection failed\n");
+                	exit(1);
+        	}else
+               	        printf("mysql connect successfully\n");	
+		mysql_real_query(t_mysql,sql_check,strlen(sql_check));
+		result=mysql_store_result(t_mysql);
+	        row=mysql_fetch_row(result);
+		length=mysql_fetch_lengths(result);
+		if(length[0]!=0){
+			int max=strlen(bitmap)>length[0]?strlen(bitmap):length[0];
+			int temp;
+			char *bitmap_new=(char *)malloc(max+1);
+			for(temp=0;temp<max;temp++){
+				if(bitmap[temp]=='1'||row[0][temp]=='1'){
+					bitmap_new[temp]='1';
+				}else
+					bitmap_new[temp]='0';
+			}
+			bitmap_new[max]='\0';	
+			sprintf(sql_update,bitmap_update,bitmap_new,filename,name);
+		}else{
+			sprintf(sql_update,bitmap_update,bitmap,filename,name);
+		}
+		printf("update_sql is %s\n",sql_update);
+        	int a;
+        	if(a=mysql_real_query(t_mysql,sql_update,strlen(sql_update))!=0){
+                	printf("bitmap_update failed\n");
+			mysql_close(t_mysql);
+                	return 1;
+        	}else
+                	printf("bitmap_update successfully\n");
+			mysql_close(t_mysql);
+			return 0;
+	}else{
+		printf("ERROR in DBCONFIG\n");
+		return 1;
+	}
+}
diff --git a/pycall.py b/pycall.py
new file mode 100644
index 0000000..a690ab8
--- /dev/null
+++ b/pycall.py
@@ -0,0 +1,16 @@
+from ctypes import *
+import os
+
+
+#ll=ctypes.cdll.LoadLibrary
+#lib=ll('./libpycall.so')
+#p=lib.foo(1,3)
+#lib.update_bitmap(52,111,ctypes.c_char_p("/root/leaf/night.mkv"))
+#print "result=%d"%p
+#print("finish")
+lib=cdll.LoadLibrary('./libpycall1.so')
+print("start")
+func=lib.update_bitmap
+func.argtypes=(c_int,c_int,c_char_p)
+func=lib.update_bitmap(52,111,"/root/leaf/pytoc/upload/night.mkv".encode("utf-8"))
+print("finish")